Entity

Time filter

Source Type

Moscow, Russia

The Moscow State Pedagogical University, previously known as the Moscow University for Women, the Second Moscow State University, the Moscow State Pedagogical Institute and the Moscow State V. I. Lenin Pedagogical Institute, and with origins dating back to 1872, is a major educational and scientific institution in Moscow, Russia, with eighteen faculties and seven branches in other Russian cities. Wikipedia.


Torgunakova O.A.,Russian Academy of Sciences | Egorova T.A.,Moscow State Pedagogical University | Semenova S.K.,Russian Academy of Sciences
Russian Journal of Genetics | Year: 2012

For the first time, we studied the polymorphism of three mitochondrial genes of the cytochrome oxidase complex (cox1, cox2, and cox3) in natural populations of wild carp living in the Volga, Amur, and Don River Basins, as well as in European Hungarian carp and two pedigree lines of Ropsha carp of domestic breeding. The highest level of nucleotide and haplotype diversity in the studied samples was detected for the cox1 gene (π = 0. 61, h = 100%). Two lines of the Ropsha carp (π = 0. 61, h = 100%) and the Far East population of Amur wild carp from Shershikh strait (Am: π = 0. 20, h = 70%) were the most polymorphic for three genes. The second sample of Amur wild carp from the Amur River (Ac), as well as the samples of Volga and Don wild carp and Hungarian carp had lower values of variability. The presence of two main genealogical lines of the wild carp and carp was demonstrated based on the total sequence of three genes, as well as the corresponding amino acid sequences in the studied area. One of these lines (line I) is typical of the sample of Amur wild carp (Am) and three members of the Ropsha carp. Line II is developed by sequences of Volga, Don, and Amur wild carp (Ac), as well as European Hungarian carp and seven other members of the Ropsha carp. Three to four sublines, which differ in nucleotide and amino acid substitutions, were found within the lines. Possible reasons for the origin of genomic variability in wild carp, as well as in European and Russian breeds of carp, are discussed. © 2012 Pleiades Publishing, Ltd. Source


Dudko R.Yu.,Russian Academy of Sciences | Matalin A.V.,Moscow State Pedagogical University | Fedorenko D.N.,RAS A.N. Severtsov Institute of Ecology and Evolution
Zoologicheskii Zhurnal | Year: 2010

Long-term investigations of the South-Eastern Altai (SEA) have resulted in 33 genera and 185 carabid species listed; 3 and 15 species are reported from Russia and SEA, respectively, for the first time. The following genera are the richest in species: Bembidion (47), Amara and Harpalus (21 each), Pterostichus (14), and Nebria (13); the genus Trechus fails to occur in the region. Subarid (35%) and boreal (32%) species prevail, while subboreal faunistic elements are less numerous than in the adjacent parts of the Altai-Sayan Mountains, with mountain endemics contributing 13% to the fauna. As a result, the carabid fauna of SEA differs in composition significantly from that of the Western and Central Altai. Its two components are heterogeneous and sharply contrast with each other: the boreal mountain component comprises chiefly tundra species, these having circum-boreal or circum-arctic ranges, while subarid (typical Mongolian and ancient Mediterranean species) combined define more than one-half of the species diversity of the faunas in the mountain depressions (the Chuya and Sayliughem mountain ridges). The species diversity increases from the nival mountain belt (15 species, predominantly Altai-Sayan endemics) to moss-lichen tundras (40, mostly boreal, species). Riparian communities become more species-rich towards the lower altitudes. Fairly rich species diversity was observed in intrazonal valley communities; their great habitat variety and constant hydrothermic regimes invite many species to occur there, these being not only tundra or meadow and steppe (characteristic of the region), but also some forest species. Many steppe ground beetles under soil moisture deficit are also concentrated in floodplains. Source


Maksakovsky V.P.,Moscow State Pedagogical University
Izvestiya Akademii Nauk, Seriya Geograficheskaya | Year: 2011

To political and economical organizations and clubs such as Eurocouncil, NAFTA, ASEAN, MERCO-SUR, ATES, EuroAsEs, SHOS, "Big Eight", "Big Twenty" during last time four BRIC countries has been added. This abbreviation can be often met in Mass Media. According to the words of the RF President D.A. Medvedev "BRIC form becomes full of value mechanism not only in coordination of the efforts, but also in admitting concrete decisions. Article by V.P. Maksakovsky somehow meet a lack, in which important geographical aspects of this problems has been affected. Source


Liu L.,Xiamen University | Wei P.,Moscow State Pedagogical University | Wang Y.,Xiamen University | Li M.,Xiamen University
Wuhan Daxue Xuebao (Xinxi Kexue Ban)/ Geomatics and Information Science of Wuhan University | Year: 2010

For the quantitative assignment of the grid behaviors trust model based on trusted computing, it gives an algorithm of calculating the direct trust values and the history trust values from interactive experience and interactive time using fluctuation energy conversion, makes a function correlation algorithm using hausdorff function, and in turn gives a method of calculating the self-confidence value, makes an update function using a normal distribution function with the threshold as average value and self-confidence value as deviation, gives the inter-domain evaluation process, finally shows the reasonableness and effectiveness of the assessment method by running the update process and analysising the result of the data of a regional grid with 2000 entities. Source


Burmistrova A.V.,Moscow State Pedagogical University | Devyatov I.A.,Moscow State University
EPL | Year: 2014

We present a microscopic theory for the dc Josephson current, based on the construction of a coherent temperature Greens function in the tight-binding approximation, in junctions with multiband superconductors. This theory is applied to junctions with a multiband Fe-based superconductor (FeBS) described by s±-wave and s++-wave order parameter symmetries, which is probably realized in FeBS. For the first time, phase dependences of the Josephson current have been calculated for different directions of an interface with respect to crystallographic axes of FeBS. The present approach is also suitable for a consistent description of the Josephson transport in structures with topological superconductors. Copyright © EPLA, 2014. Source


Andreev S.P.,National Research Nuclear University MEPhI | Gurvich Yu.A.,Moscow State Pedagogical University | Nebogatov V.A.,National Research Nuclear University MEPhI | Pavlova T.V.,RAS A.M. Prokhorov General Physics Institute
Physica B: Condensed Matter | Year: 2011

A broadening of the absorption line of the classical cyclotron resonance (CR) in two- and three-dimensional semiconductors with neutral impurities of arbitrary depth is investigated. A dependence of the half-width of the classical CR line on the impurity characteristics (depth and range of the potential) is obtained in the wide range of the parameters. The broadening is studied within the Born approximation, and also at resonant and non-resonant scattering. Fundamental differences between the line broadening by neutral impurities in two- and three-dimensional semiconductors are revealed. An alternative explanation of classical experiments on electron scattering by neutral impurities (donors) is proposed. © 2011 Published by Elsevier B.V. Source


Narikbaeva L.M.,Kazakh National Pedagogical University | Savenkov A.I.,Moscow State Pedagogical University
International Journal of Environmental and Science Education | Year: 2016

The purpose of this study was to examine science teachers’ level of using computers in teaching and the impact of a teacher professional development program (TPDP) on their views regarding utilizing computers in science education. Forty-three in-service science teachers from different regions of Turkey attended a 5 day TPDP. The TPDP was structured in modules designed using inquiry-based interactive computer simulations (IBICS). The participants created modules on different science subjects during the TPDP. Their progression was evaluated by micro-teaching sessions. Mixed methods research was used. The data were gathered by a survey and semi-structured interviews. Findings indicate that most of the science teachers initially lacked the necessary skills and knowledge for using computers in teaching. However, after the TPDP majority of them developed positive views on using computers in teaching and learning. Also, for teachers the TPDP provided ways and methods of successful integration of ICTs in teaching. © 2016 Fedorenko and Bykova. Open Access terms of the Creative Commons Attribution 4.0 International License. Source


Horak J.,Silva Tarouca Research Institute for Landscape and Ornamental Gardening | Horak J.,Czech University of Life Sciences | Zaitsev A.A.,Moscow State Pedagogical University | Vavrova E.,Silva Tarouca Research Institute for Landscape and Ornamental Gardening
Insect Conservation and Diversity | Year: 2011

Cucujus haematodes is a rare obligate saproxylic beetle with Eurasian distribution range. The species has suffered a sharp decline in the European part of its distribution range, which can be attributed to the loss of forest habitats with a continuous supply of dead wood. We found that this species is largely distributed in the Primorskiy Region (far eastern Russia), where it can reach strong populations in late stages of pioneer forest succession. Contrary to the observations in Europe, C. haematodes occurred predominantly in lower altitudes and it preferred broadleaved trees. Our guild analysis showed springtails (Collembola), mites (Acarina), ants (Formicidae) and subcortical histerids (Histeridae) and carabids (Carabidae) to be the most associated species at the microhabitat level. Cucujus haematodes can be considered as a species of high conservation value because it shares the habitat with some other threatened saproxylic beetles, such as Boros schneideri (Boridae), Pytho kolwensis (Pythidae), Cardiophorus nigerrimus (Elateridae) and Dendrophagus crenatus (Silvanidae). © 2010 The Authors. Insect Conservation and Diversity © 2010 The Royal Entomological Society. Source


Bonkalo T.I.,Russian State Social University | Polyakova O.B.,Russian State Social University | Bonkalo S.V.,Russian State Social University | Kolesnik N.T.,Moscow State University | Sorokoumova E.A.,Moscow State Pedagogical University
Biosciences Biotechnology Research Asia | Year: 2015

This article is dedicated to the actual problem of preventing the spread of nationalist sentiments in a multicultural society. The modern stage of social development characterized by rapid growth of inter-ethnic contact, intense changes in the ethnic composition of the country, which explains kept in repair by dynamics of migration flows, a variety of social groups, ethnic communities. In this regard, the issue of ethnic minorities, their social status and their position in the multinational country, their successful adaptation and integration into the global multicultural region, has acquired a special urgency. Basing on the conducted empirical study, the authors make the conclusion about the development of ethnic social identity of the members of ethnic community organizations as the key condition for preventing of the spread of neo-nazism. The authors define the nature, content and types of ethnic social identity of national minorities, elaborate the author diagnostic tools to study its development, conduct the empirical research and basing on its results discover the psychological mechanisms for transformation of national identity of representatives of different ethnic groups dispersedly residing on the territory of Russian. Source


Sharikov A.V.,Moscow State Pedagogical University | Volkov S.V.,RAS Severtsov Institute of Ecology | Ivanov M.N.,Timiryazev State Biological Museum | Basova V.B.,Timiryazev State Biological Museum
Russian Journal of Ecology | Year: 2010

The structure of the long-eared owl (Asio otus L.) settlements in anthropogenic landscapes has been studied in the Zhuravlinaya Rodina protected territory in the northern Moscow region in 2001-2005. The possible factors that cause the formation of such settlements have been analyzed. The differences in the breeding success between owls nesting near and away from human settlements have been estimated. Aggregated nesting of owls is assumed to be mainly related to a lower predator pressure in the vicinity of human dwellings in the incubation period. Aggregated nesting is regarded as an expression of synanthropization of the species. © Pleiades Publishing, Ltd., 2010. Source


Vergun A.A.,Moscow State Pedagogical University | Martirosyan I.A.,Russian Academy of Sciences | Semyenova S.K.,Russian Academy of Sciences | Omelchenko A.V.,RAS Severtsov Institute of Ecology | And 5 more authors.
PLoS ONE | Year: 2014

The all-female Caucasian rock lizard species Darevskia dahli and other parthenogenetic species of this genus reproduce normally via true parthenogenesis. Previously, the genetic diversity of this species was analyzed using allozymes, mitochondrial DNA, and DNA fingerprint markers. In the present study, variation at three microsatellite loci was studied in 111 specimens of D. dahli from five populations from Armenia, and new information regarding clonal diversity and clone formation in D. dahli was obtained that suggests a multiple hybridization origin. All individuals but one were heterozygous at the loci studied. Based on specific allele combinations, 11 genotypes were identified among the individuals studied. Individuals with the same genotypes formed distinct clonal lineages: one major clone was represented by 72 individuals, an intermediate clone was represented by 21 individuals, and nine other clones were rare and represented by one or several individuals. A new approach based on the detection and comparison of genotype-specific markers formed by combinations of parental-specific markers was developed and used to identify at least three hybridization founder events that resulted in the initial formation of one major and two rare clones. All other clones, including the intermediate and seven rare clones, probably arose through postformation microsatellite mutations of the major clone. This approach can be used to identify hybridization founder events and to study clone formation in other unisexual taxa. © 2014 Vergun et al. Source


Porco D.,CNRS Biodiversity Studies Laboratory | Potapov M.,Moscow State Pedagogical University | Bedos A.,French Natural History Museum | Busmachiu G.,Moldova Academy of Sciences | And 3 more authors.
PLoS ONE | Year: 2012

Parisotoma notabilis is the most common species of Collembola in Europe and is currently designated as ubiquist. This species has been extensively used in numerous studies and is considered as well characterized on a morphological ground. Despite the homogeneity of its morphology, the sequencing of the barcoding fragment (5′ end of COI) for several populations throughout Europe and North America revealed four distinct genetic lineages. The divergence found between these lineages was similar to the genetic distance among other species of the genus Parisotoma included in the analysis. All four lineages have been confirmed by the nuclear gene 28S. This congruence between mitochondrial and nuclear signals, as well as the geographical distribution pattern of lineages observed in Europe, supports the potential specific status of these lineages. Based on specimens from the type locality (Hamburg), the species name was successfully assigned to one of these lineages. This finding raises several problems as Parisotoma notabilis has been widely used in many ecological studies. Accumulation of new data for the different lineages detected, especially ecological information and life history traits, is needed to help resolve this situation. © 2012 Porco et al. Source


Matalin A.V.,Moscow State Pedagogical University
Journal of Asia-Pacific Entomology | Year: 2012

A new tiger beetles species, Polyrhanis dabraensis sp. nov., is described from Dabra (Foja mountains region, Papua, New Guinea, Indonesia). Its elytral markings are similar to those of Polyrhanis funerata and P. barbata, but it is much smaller and its anteapical spot is more expanded on the disc and is connected with the apical lunule. The aedeagus has a thin straight hook (spur) directed perpendicularly on the dorsal side, like that of P. io, P. innocentior, P. excisilabris, P. olthofi, and P. vannideki. It is easily recognized by its distinctive elytral markings and small body size. © 2011 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Source


Moss D.,University of Manchester | Sokoloff D.,Moscow State Pedagogical University | Beck R.,MPI fur Radioastronomie
Astronomy and Astrophysics | Year: 2012

Context. The magnetic field of galaxies is believed to be produced by internal dynamo action, but can be affected by motion of the galaxy through the surrounding medium. Observations of polarized radio emission of galaxies located in galaxy clusters have revealed noticeable features of large-scale magnetic configurations, including displacements of the magnetic structures from the optical images and tails, which are possible imprints of ram pressure effects arising from motion of the galaxies through the intracluster medium. Aims. We present a quantitative dynamo model, which attempts to describe the above effects. In contrast, to the traditional problem of a wind affecting a body with a prescribed magnetic field, we investigate how a non-magnetized wind flow affects a magnetic field that is being self-excited by galactic dynamo action. Methods. To isolate the leading physical effects, we exploit a simple dynamo model that can describe relevant effects. In particular, we use what is known as the "no-z" approximation for the mean-field dynamo equations. Results. In a suitable parametric range we obtain displacements of the large-scale magnetic field, as well as magnetic tails. However, the specific details of their locations are quite counterintuitive. The direction of displacement is perpendicular to, rather than parallel to, the wind direction. The point at which the tail emerges from the galaxy depends on details of the model. The tail is eventually directed downstream. In the simplest case the magnetic tail begins in the region where the wind decreases the total gas velocity. Any wind that penetrates the galaxy modifies the intrinsic dynamo action. These features are different from those found in ram-pressure models. Conclusions. Any determination of galactic motion through the cluster medium from observational data needs to take the effects of dynamo action into account. © 2012 ESO. Source


Pipin V.V.,Russian Academy of Sciences | Sokoloff D.D.,Moscow State Pedagogical University | Usoskin I.G.,University of Oulu
Astronomy and Astrophysics | Year: 2012

Context. Solar cycles vary in their amplitude and shape. There are several empirical relations between various parameters that link the cycle's shape and amplitude, foremost these of the Waldmeier relations. Aims. The solar cycle is believed to be a result of the solar dynamo action, therefore these relations require an explanation in the framework of this theory, which we aim to present here. Methods. We related the cycle-to-cycle variability of solar activity to fluctuations of solar dynamo drivers and primarily to fluctuations in the parameter responsible for the recovery of the poloidal magnetic field from the toroidal one. To be specific, we developed a model in the framework of the mean-field dynamo based on the differential rotation and α-effect. Results. We demonstrate that the mean-field dynamo model, which is based on a realistic rotation profile and on nonlinearity that is associated with the magnetic helicity balance, reproduces both qualitatively and quantitatively the Waldmeier relations observed in sunspot data since 1750. The model also reproduces more or less successfully other relations between the parameters under discussion, in particular, the link between odd and even cycles (Gnevyshev-Ohl rule). Conclusions. We conclude that the contemporary solar dynamo theory provides a way to explain the cycle-to-cycle variability of solar activity as recorded in sunspots.We discuss the importance of the model for stellar activity cycles which, as known from the data of the Mount Wilson HK project, which measures the Ca H and K line index for other stars, demonstrate the cycle-to-cycle variability similar to solar cycles. © 2012 ESO. Source


Gao Y.,CAS Institute of Plant Physiology and Ecology | Potapov M.,Moscow State Pedagogical University
Annales de la Societe Entomologique de France | Year: 2011

Seven species of the genus Isotomiella Bagnall 1939 were collected in China, two of which from Hainan and Guangxi provinces (South China) are newly described and illustrated. Isotomiella longisensilla n. sp. has bidentate mucro and long sensilla on most tergites, a character never seen before in this genus. I. deharvengi n. sp. belongs to the minor group and is characterized by a pair of strongly curved sensilla on Abd. V. Source


Serenko O.A.,Russian Academy of Sciences | Shevchenko V.G.,Russian Academy of Sciences | Zhiltsov A.S.,Russian Academy of Sciences | Chuprakov V.E.,Moscow State Pedagogical University | And 7 more authors.
Nanotechnologies in Russia | Year: 2013

In this work the possibility of forming nanocomposite materials based on polyethylene oxide and hybrid organo-inorganic "core-shell" systems known as molecular silicasols with a modified external layer is studied. The chemical structure of a particle shell similar to the polymer matrix monomeric unit allows one to decrease the surface tension on the disperse phase-disperse medium interface. The level of compatibility of the components and its influence on the molecular weight of the polymer matrix was estimated based on interferometry and viscometry data, as well as an analysis of the concentration dependence of MFI, dielectric, and mechanical properties of the composites. © 2013 Pleiades Publishing, Ltd. Source


Semenov A.,Moscow State Pedagogical University | Soprunov S.,RAS Dorodnicyn Computing Center | Uspensky V.,Moscow State University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

The paper presents recent results and open problems on classes of definable relations (definability spaces, reducts, relational algebras) as well as sources for the research starting from the XIX century. Finiteness conditions are investigated, including quantifier alternation depth and number of arguments width. The infinite lattice of definability for integers with a successor function (a non ω-categorical structure) is described. Methods of investigation include study of automorphism groups of elementary extensions of structures under consideration, using Svenonius theorem and a generalization of it. © 2014 Springer International Publishing Switzerland. Source


Mamalyga M.L.,Bakulev Center Research of Cardiovascular Surgery | Mamalyga L.M.,Moscow State Pedagogical University
Zhurnal Nevrologii i Psihiatrii imeni S.S. Korsakova | Year: 2015

Objecteve. To study changes of cerebral haemo dynamics at the progressing kardialny dysfunction caused by chronic heart failure. Material and methods. Authors executed all researches on male Wistar rats. Used methods: echocardiography and ultrasound Doppler study of the brain vessels is performed using US-apparatus Mindray M5, using linear sensor 10 MHz (Mindray, China); magnetic resonance imaging of brain and heart of experimental animals with chronic heart failure. Applied functional tests. Results. In the early stage of cardiac decompensation does not change the blood flow in the carotid and basilar arteries, but seizure readiness (SR) of the animals increased. Preservation of reactivity to hypercapnic and compression tests, suggests that the increase in SR is not associated with circulatory disorders in the brain. Exacerbation of heart failure (HF) leads to severe decompensation, including a decrease in blood flow in the carotid and basilar arteries. Metabolic cascade of autoregulation in these animals areaktiven and myogenic greatly reduced. In this case revealed a progressive increase in the SR. Conclusion. Inefficiency of the heart at different stages of HF is not the same effect on the reserves of the autoregulation of cerebral hemodynamics, which affects the formation and aggravation of SR. Moreover, its rise in various stages of decompensation is not always caused by cerebral ischemia. © 2015, Media Sphera. All rights reserved. Source


Bisnovatyi-Kogan G.S.,Russian Academy of Sciences | Chernin A.D.,Moscow State Pedagogical University
Astrophysics and Space Science | Year: 2012

We study physics of clusters of galaxies embedded in the cosmic dark energy background. Under the assumption that dark energy is described by the cosmological constant, we show that the dynamical effects of dark energy are strong in clusters like the Virgo cluster. Specifically, the key physical parameters of the dark mater halos in clusters are determined by dark energy: (1) the halo cut-off radius is practically, if not exactly, equal to the zero-gravity radius at which the dark matter gravity is balanced by the dark energy antigravity; (2) the halo averaged density is equal to two densities of dark energy; (3) the halo edge (cut-off) density is the dark energy density with a numerical factor of the unity order slightly depending on the halo profile. The cluster gravitational potential well in which the particles of the dark halo (as well as galaxies and intracluster plasma) move is strongly affected by dark energy: the maximum of the potential is located at the zero-gravity radius of the cluster. © 2011 Springer Science+Business Media B.V. Source


Godin V.N.,Moscow State Pedagogical University
Contemporary Problems of Ecology | Year: 2014

The analysis of sexual differentiation, the spread of sexual forms, and relations between sexual polymorphism and ecological-biological peculiarities in dicotyledonous plants of the Siberian flora was performed. Seven variants of sexual differentiation in Siberia are identified: gynomonoecy, gynodioecy, dioecy, monoecy, andromonoecy, trioecy, and androdioecy. © 2014, Pleiades Publishing, Ltd. Source


Babenko A.B.,RAS Severtsov Institute of Ecology | Chimitova A.B.,Moscow State Pedagogical University | Stebaeva S.K.,Russian Academy of Sciences
ZooKeys | Year: 2011

The paper is devoted to a taxonomic revision of the genus Sensillonychiurus Pomorski et Sveenkova, 2006. Five new species of this genus, i.e. S. mirus sp. n., S. taimyrensis sp. n., S. vegae sp. n., S. vitimicus sp. n., and S. amuricus sp. n., as well as three new species of the related genus Allonychiurus Yoshii, 1995, i.e. A. subvolinensis sp. n., A. elikonius sp. n., and A. unisetosus sp. n. are being described from various regions of Eurasia. The diagnoses of both genera are amended to include described species. Two genera, Tantu- lonychiurus Pomorski, 1996 and Thibaudichiurus Weiner, 1996, are treated as junior synonyms of the genus Allonychiurus. Agraphorura eisi (Rusek, 1976) is transferred to Sensillonychiurus; Tantulonychiurus volinensis (Szeptycki, 1964) and T. asiaticus Babenko, 2007 to Allonychiurus. A review of morphological peculiarities of Sensillonychiurus is performed, comparisons with the other genera of Thalassaphorurini given, and a key to the known species provided. Source


Shangina E.L.,Moscow State Pedagogical University
Semiconductor Science and Technology | Year: 2012

We consider theoretical aspects of the intrinsic limit to low-temperature mobility μ in semiconducting structures with single heterojunctions, taking into account the scattering of the two-dimensional (2D) carriers by piezoelectric acoustic phonons. We find that the reduction of the concentration of 2D carriers to n s = 4.2 × 10 11 cm 2 in the region of small-angle scattering will result in a mobility as high as 110 × 10 6 cm 2 (V s) 1 at T = 1.6 K. Since the maximum mobility depends on the concentration of carriers as n 5/2 s, it grows up to 320 × 10 6 cm 2 (V s) 1 at n s = 8.2 × 10 11 cm 2 and approximately the same temperature T = 1.5 K. Detailed numerical results are presented as a function of 2D carrier density and temperature and serve as a guide to experimentalists who wish to achieve peak carriers mobility. © 2012 IOP Publishing Ltd. Source


A list of 67 species group taxa of longhorned beetles described by B. E. Jakovlev with data on their types and nomenclatorial history is presented. © 2011 Pleiades Publishing, Ltd. Source


Pankratov D.A.,Moscow State Pedagogical University | Korobkov V.I.,Moscow State University
Journal of Analytical Chemistry | Year: 2014

Photographic properties of one of atomic photodetectors are studied at the temperature of liquid nitrogen. The characteristic curves obtained at room and cryogenic temperatures indicate that the detector retains its physical and photographic properties, and its possibilities can be expanded to studies of deeply frozen samples. The data obtained point to an increase in the sensitivity of the photographic material frozen to cryogenic temperatures at short exposures. © 2014 Pleiades Publishing, Ltd. Source


Kiselev A.S.,Yaroslavl Pedagofical University | Krechet V.G.,Yaroslavl Pedagofical University | Frolov B.N.,Moscow State Pedagogical University
Gravitation and Cosmology | Year: 2010

In the framework of a unified five-dimensional geometric theory of gravitation and electromagnetism, a number of static, cylindrically symmetric solutions have been obtained, corresponding to the presence of an azimuthal magnetic field and a scalar field of geometric origin. It is shown that these fields can induce the appearance of a nontrivial space-time topology (in the form of wormholes and cosmic strings). © 2010 Pleiades Publishing, Ltd. Source


Andrievskii A.M.,Research Institute of Organic Semiproducts and Dyes | Grachev M.K.,Moscow State Pedagogical University | Chelysheva O.V.,Research Institute of Organic Semiproducts and Dyes
Russian Journal of Organic Chemistry | Year: 2013

The reaction of 2,4,5,7-tetranitrofluorenone with amines, thiols, and phenol in a polar aprotic solvent led to the preferable substitution of the nitro group in the position 2, and in the reaction of 2,4,7-trinitrofluorenone first the nitro group in the position 4 was replaced. The different regioselectivity is due evidently to the steric hindrances to the nucleophilic attack on the atom C4 caused by the nitro group in the position 5 of tetranitrofluorenone. © 2013 Pleiades Publishing, Ltd. Source


Syrovatko A.S.,Kolomna Archaeological Service | Zaretskaya N.E.,Russian Academy of Sciences | Troshina A.A.,Kolomna Archaeological Service | Panin A.V.,Moscow State Pedagogical University
Radiocarbon | Year: 2012

Excavation of the Schurovo archaeological site, located on a ~12-m river terrace, has revealed 3 occupation periods: 1) as a dwelling site of the Migration period (4th-5th centuries AD); 2) as local burial mounds (termed "houses of the dead" in Russian); 3) and as a ground burial period, which left a cremation layer directly on the ground and is now covered by the Little Ice Age overbank alluvium. The latter 2 periods contain few artifacts, which makes radiocarbon dating more appropriate for establishing their chronology. The burial mounds were dated to the mid-6th to mid-7th centuries AD. The accumulation of colluvium in mound ditches points to a rather long (at least a century) pause between the construction of burial mounds and the appearance of ground burials. Dates from the cremation layer (ground burials) span a wide range from the 8th to 13th centuries AD. As the younger dates do not correspond to regional historical and archaeological contexts, we believe them to be "rejuvenated" due to their long exposure before burial to the young alluvium. The ground burials are dated to the mid-8th to mid-10th centuries AD, the so-called "dark ages" in the Moscow region characterized by very few archaeological data. An isolated ancient branch of the Oka River near the archaeological site was radiocarbon dated and found to be active until the mid-10th to later-12th centuries AD, meaning that it was likely used as a local harbor on the transit river route throughout the site's occupation. © 2012 by the Arizona Board of Regents on behalf of the University of Arizona. Source


Mamalyga M.L.,Moscow State Pedagogical University
Neurochemical Journal | Year: 2012

Chronic heart failure (CHF) modulates the activity of monoaminergic systems in the central nervous system (CNS). An increased dioxyphenylacetic acid/dopamine ratio and 5-oxyindoleacetic acid/serotonin ratio in the majority of the brain structures studied during CHF indicate the high activity of the dopamine and serotonin systems and their functional stress during the development of hypoxia-compensative processes aimed at the maintenance of the normal cerebral blood flow. However, if a convulsive seizure develops during CHF, it may result in the failure of compensatory and adaptive mechanisms, thus, leading to decreased levels of dopamine, serotonin, and their metabolites in most brain regions studied. These animals are also characterized by increased seizure readiness, which is not usually found in the postictal period in rats without heart pathologies. Hence, CHF prolongs the postictal changes in the brain, limits its capacity to recovery, which, in turn, builds a basis for further seizure development. © 2012 Pleiades Publishing, Ltd. Source


Zaitsev A.A.,Moscow State Pedagogical University
Russian Entomological Journal | Year: 2016

The late-instar larva of Trachypholis variegata Sharp, 1885 from Kunashir island (Russia, South Kurils) is described and compared with other Synchitini larvae. A key to genera of Synchitini based on the known larvae is provided. © RUSSIAN ENTOMOLOGICAL JOURNAL, 2016. Source


Yarygin D.V.,Moscow State Humanitarian University | Min'kova N.O.,Moscow State Humanitarian University | Filippovich Y.B.,Moscow State Pedagogical University
Russian Journal of Developmental Biology | Year: 2012

Intracellular localization of serine, cysteine and aspartate proteases, as well as their protein inhibitors, in bombyx grain in the postdiapause period of embryogenesis has been studied. Proteolytic activity of aspartate and cysteine proteases was found in lysosomal, mitochondrial, and nuclear fractions of grains. Serine protease activity was not observed in subcellular fractions of grains of the fourth day of postdiapause development. It has been shown that activities of protein inhibitors and certain peptide hydrolases in subcellular fractions provide consistent functioning and fine regulation of the proteolytic enzyme complex. © 2012 Pleiades Publishing, Ltd. Source


Pipin V.V.,CAS National Astronomical Observatories | Pipin V.V.,Russian Academy of Sciences | Zhang H.,CAS National Astronomical Observatories | Sokoloff D.D.,CAS National Astronomical Observatories | And 4 more authors.
Monthly Notices of the Royal Astronomical Society | Year: 2013

Observations of proxies of the magnetic helicity in the Sun over the past two solar cycles revealed reversals of the helicity hemispheric sign rule (negative in the North and positive in the South hemispheres).We apply the mean-field solar dynamo model to study the reversals of the magnetic helicity sign for the dynamo operating in the bulk of the solar convection zone. The evolution of the magnetic helicity is governed by the conservation law. We found that the reversal of the sign of the small-scale magnetic helicity follows the dynamo wave propagating inside the convection zone. Therefore, the spatial patterns of the magnetic helicity reversals reflect the processes which contribute to generation and evolution of the large-scale magnetic fields. At the surface, the patterns of the helicity sign reversals are determined by the magnetic helicity boundary conditions at the top of the convection zone. We demonstrate the impact of fluctuations in the dynamo parameters and variability in dynamo cycle amplitude on the reversals of the magnetic helicity sign rule. The obtained results suggest that the magnetic helicity of the large-scale axisymmetric field can be treated as an additional observational tracer for the solar dynamo and it probably can be used for the solar activity forecast as well. © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Source


Kostina M.V.,Moscow State University | Yasinskaya O.I.,Moscow State University | Barabanshchikova N.S.,Moscow State University | Orlyuk F.A.,Moscow State Pedagogical University
Russian Journal of Biological Invasions | Year: 2016

Anthropogenic and natural disturbances, such as damage to spruce forests by the eight-dentated bark beetle, favor the invasion of Acer negundo into the strongly fragmented forests close to Moscow. A crown closure of more than 0.5 as well as dense rowan understory or A. platanoides young growth, prevents the penetration of A. negundo into forest communities. Being less shade tolerant but more fertile and fast growing than A. platanoides, A. negundo gradually invades only slightly disturbed woodlands. Its ability to form multi-layered stands faster than other wood species hampers the regeneration of local species. The progressing affection of A. negundo leaves by Phyllosticta negundinis fungus and noninfectious leaf toxicosis observed in Moscow may decrease its invasive potential. © Pleiades Publishing, Ltd., 2016. Source


Tully T.,CNRS Ecology and Environmental Sciences Institute of Paris | Tully T.,Paris-Sorbonne University | Potapov M.,Moscow State Pedagogical University
PLoS ONE | Year: 2015

We describe and compare the external morphology of eleven clonal strains and one sexual lineage of the globally distributed Folsomia candida, known as "standard" test Collembola. Of the 18 morphological characters studied, we measured 14 to have significant between-strains genetic variations, 9 of these had high heritabilities (>78%). The quantified morphological polymorphism was used to analyse the within-species relationships between strains by using both a parsimony analysis and a distance tree. These two detailed morphological phylogenies have revealed that the parthenogenetic strains grouped themselves into two major clades. However the exact position of the sexual strain remains unclear and further analysis is needed to confirm its exact relationship with the parthenogenetic ones. The two morphologically based clades were found to be the same as the ones previously described using molecular analysis. This shows that despite large within-strain variations, morphological characters can be used to differentiate some strains that have diverged within a single morphospecies. We discuss the potential evolutionary interpretations and consequences of these different levels of phenotypic variability. © 2015 Tully, Potapov. Source


Osad'ko I.S.,Russian Academy of Sciences | Fedyanin V.V.,Moscow State Pedagogical University
Physical Review A - Atomic, Molecular, and Optical Physics | Year: 2011

A single complex molecule with conformational changes (conformations 0 and 2) is considered. When such a molecule is irradiated by cw-laser light it can randomly change the intensity or polarization of its fluorescence due to jumps from one conformation to another. In fact, the molecule manifests itself either like the 0-type or the 2-type emitter. An expression for the matrix s αβ(t) called the start-stop correlator (waiting time distribution) in which α=0,2 and β=0,2 is derived. An expression for the matrix pαβ(t) called the full correlator is derived as well. It determines the density of the probability of finding an event of α type and an event of β type separated by time interval t. A relation between matrices sαβ(t) and p αβ(t) is found. A mathematical expression for the distribution wN(T) of events measured in time interval T is derived. It is expressed solely via the matrix sαβ(t). Numerical calculations of the event distribution function for various rates of intra- and interconformational jumps are carried out with the help of the formula for wN(T) and by the Monte Carlo method. Both methods of the calculation yield identical distributions. Fluctuating fluorescence intensity I(t) for a bin time of 5 ms is calculated for slow and fast interconformational jumps. A relation is found between the autocorrelation function g(2)(t) of fluorescence measurable in experiments and the matrix p αβ(t) calculated theoretically. © 2011 American Physical Society. Source


Greenslade P.,University of Ballarat | Potapov M.,Moscow State Pedagogical University
Arthropod Systematics and Phylogeny | Year: 2012

Isotopenola perterrens sp.n. is described from a 40 year old Eucalyptus plantation in Victoria, Australia, and its occurrence in an adjacent site of remnant native vegetation is reported. Fully adult males are armed with numerous strong spine-like macrochaetae on lateral parts of head and body tergites and with fields of long bristles on latero-ventral and ventral areas of abdomen. Antennae of epitokous males are of normal shape but bear thickened chaetae. This is the second and most extreme case of epitoky recorded in the genus. The occurrence of sexual dimorphism, of which epitoky is a subset, is summarised for Australian Collembola. Environmental factors that appear to facilitate successful recolonisation of native fauna onto revegetated sites in Australia are proposed. © Senckenberg Gesellschaft für Naturforschung. Source


Beck M.,University of Konstanz | Rousseau I.,University of Konstanz | Klammer M.,University of Konstanz | Leiderer P.,University of Konstanz | And 8 more authors.
Physical Review Letters | Year: 2013

Observations of radiation-enhanced superconductivity have thus far been limited to a few type-I superconductors (Al, Sn) excited at frequencies between the inelastic scattering rate and the superconducting gap frequency 2Δ/h. Utilizing intense, narrow-band, picosecond, terahertz pulses, tuned to just below and above 2Δ/h of a BCS superconductor NbN, we demonstrate that the superconducting gap can be transiently increased also in a type-II dirty-limit superconductor. The effect is particularly pronounced at higher temperatures and is attributed to radiation induced nonthermal electron distribution persisting on a 100 ps time scale. © 2013 American Physical Society. Source


Bhattacharya A.,North Bengal University | Bhattacharya A.,University of Rome La Sapienza | Isaev R.,Bashkir State University | Scalia M.,University of Rome La Sapienza | And 4 more authors.
Journal of Cosmology and Astroparticle Physics | Year: 2010

After the work of Rindler and Ishak, it is now well established that the bending of light is influenced by the cosmological constant A appearing in the Schwarzschild-de Sitter spacetime. We show that their method, when applied to the exact Mannheim-Kazanas-de Sitter solution of the Weyl conformal gravity, nicely yields the expected answer together with several other physically interesting new terms. Apart from A, the solution is parametrized by a conformal parameter γ, which is known to play a dominant role in the galactic halo gravity. The application of the method yields exactly the same γ- correction to Schwarzschild bending as obtained by standard methods. Different cases are analyzed, which include some corrections to the special cases considered in the original paper by Rindler and Ishak. © 2010 IOP Publishing Ltd and SISSA. Source


Potapov M.,Moscow State Pedagogical University | Gulgenova A.,Buryat State University | Babykina M.,Khingansky State Nature Reserve
Zootaxa | Year: 2016

Two genera are revised based on material from Buryatia (Russia, East Siberia). Vertagopus ceratus sp. nov. and V. asiaticus sp. nov. are described of which the former species is strictly alpine and is defined by pale colouration, the presence of chaetae on the anterior side of the ventral tube, and abundant sensillar chaetotaxy. V. asiaticus sp. nov. is widely distributed in Asia and is unusual due to only 9 chaetae in apical whorl on tibiotarsi. A key to species of Vertagopus Börner, recorded in the republic is given, and notes on morphology, distribution, and ecology are provided. In the genus Agrenia Börner, a form similar with A. bidenticulata was recorded in mountainous areas. Buryatian populations considerably differ from the diagnosis of the typical arctic A.bidenticulata (Tullberg) by a much longer claw. A conception of A. bidenticulata sensu lato complex is temporarily proposed basing on available materials from Palearctic, including High Arctic, sub-Arctic and South Siberian mountains. The complex consists of several local forms which are different in Claw index and associated Tibiotarsus/Claw ratio, while the dependence of the two indexes on the latitude is shown. © Copyright 2016 Magnolia Press. Source


Elvira D.,CNRS Optic of Semiconductor nanoStructures Group | Michon A.,CNRS Optic of Semiconductor nanoStructures Group | Fain B.,CNRS Optic of Semiconductor nanoStructures Group | Patriarche G.,CNRS Optic of Semiconductor nanoStructures Group | And 8 more authors.
Applied Physics Letters | Year: 2010

By using superconducting single photon detectors, we perform time-resolved characterization of a small ensemble of InAsP/InP quantum dots grown by metal organic vapor phase epitaxy, emitting at wavelengths between 1.6 and 2.2 μm. We demonstrate that alloying phosphorus with InAs allows to shift the emission wavelength toward higher wavelengths, while keeping the high optical quality of these quantum dots at room temperature, with no decrease in their radiative lifetime. © 2010 American Institute of Physics. Source


Grachev M.K.,Moscow State Pedagogical University
Russian Chemical Reviews | Year: 2013

Published data on the preparation of phosphorus-containing cyclodextrins are summarized. It is demonstrated that some significant features of their synthesis and chemical behaviour are caused by specific supramolecular interactions involving the inner chiral cavity of cyclodextrins capable of incorporating various guests, which often leads to alteration of customary routes of chemical transformations. The possibilities of practical applications of phosphorus-containing cyclodextrins are briefly analyzed. The bibliography includes 89 references. © 2013 Russian Academy of Sciences and Turpion Ltd. Source


Fedyanin V.V.,Moscow State Pedagogical University | Osad'Ko I.S.,Russian Academy of Sciences
Journal of Chemical Physics | Year: 2011

A theoretical six-level model for blinking fluorescence of single PPV-PPyV copolymer molecule excited by CW-laser light is proposed. The model has been chosen in accordance with the following facts found in the Paul Barbara group experiment: (i) alternation of two types of fluorescence with moderate and strong levels of emission, (ii) existence of dark states with no fluorescence, (iii) linear dependence of inverse on-interval duration on laser intensity, and (iv) existence of laser intensity independent off-intervals. Relations between the distribution function w″(N, T) for photons emitted by a single molecule, the distribution function w′(N, T) for photons arriving at photomultiplier tube (PMT) and photo-electric pulse distribution w(N, T) created in a PMT are discussed. The theory is able to describe pulse distribution function w(N, T) measured experimentally at signal acquisition time T = 0.1 s. Values of all rate constants of the model have been found from comparison of the theory with the experiment. Distributions w on, off(t) of on- and off-times and distribution w(N, T) of pulses have been calculated for infrequent and frequent inter-conformational jumps in single copolymer molecule. © 2011 American Institute of Physics. Source


Vitukhnovskii A.G.,RAS Lebedev Physical Institute | Pereverzev A.Y.,Moscow Institute of Physics and Technology | Fedyanin V.V.,Moscow State Pedagogical University | Ambrozevich S.A.,RAS Lebedev Physical Institute | And 2 more authors.
JETP Letters | Year: 2012

The statistics of luminescence from single CdSe/CdS core/shell semiconductor nanocrystals under CW laser excitation at room temperature is experimentally investigated by recording sequences of absolute arrival times of the emitted photons. It is shown that the correlation coefficient for consecutive intervals between the photon-arrival times differs from zero. The correlation persists for photon-arrival intervals separated by two or more photon-detection events, until the time between the two intervals becomes, on average, as long as 180 ms, which corresponds to about 10 3 detected photons. A simulation of the luminescence process supports the conclusion that this correlation is linked to the blinking character of the quantum-dot luminescence. © 2012 Pleiades Publishing, Ltd. Source


Kitchatinov L.L.,Institute of Solar Terrestrial Physics | Moss D.,University of Manchester | Sokoloff D.,Moscow State Pedagogical University
Monthly Notices of the Royal Astronomical Society: Letters | Year: 2014

M-dwarfs demonstrate two types of activity: (1) strong (kilogauss) almost axisymmetric poloidal magnetic fields; and (2) considerably weaker non-axisymmetric fields, sometimes including a substantial toroidal component. Dynamo bistability has been proposed as an explanation. However, it is not straightforward to obtain such a bistability in dynamo models. On the other hand, the solar magnetic dipole at times of magnetic field inversion becomes transverse to the rotation axis, while the magnetic field becomes weaker at times far from that of inversion. Thus, the Sun resembles a star with the second type of activity. We suggest that M-dwarfs can have magnetic cycles, and that M-dwarfs with the second type of activity can just be stars observed at times of magnetic field inversion. Then the relative number of M-dwarfs with the second type of activity can be used in the framework of this model to determine parameters of stellar convection near the surface. © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Source


Panova I.G.,Moscow State University | Zhukova E.K.,Moscow State University | Matukhina E.V.,Moscow State Pedagogical University | Topchieva I.N.,Moscow State University
Nanotechnologies in Russia | Year: 2010

A columnar modification of β-cyclodextrin (β-CDcol) has been synthesized using self-assembly and self-organization processes. It is shown that the obtained macrocycle assemblies in the solid state are highly ordered structures with through cylindrical pores with an average diameter of ~0.7 nm and a length of about 60 nm. These structures can be of interest as a new type of macroreceptors for the inclusion of molecules with diameters not exceeding 0.7 nm belonging to various chemical classes. The abilities of the common cage structure of β-CD and the β-CDcol modification to bind low-molecular-weight volatile organic compounds have been compared. The dependence of the composition, structure, and thermal stability of the inclusion complexes on the ligand nature and geometry is analyzed. The absence of any specificity in the adsorption of ligands on β-CDcol and the possibility of using this structure as a stable nanocontainter for the storage of volatile compounds is demonstrated. © 2010 Pleiades Publishing, Ltd. Source


Abramov V.I.,Russian Academy of Sciences | Stepanova A.A.,Moscow State University | Famelis S.A.,Moscow State Pedagogical University
Biophysics | Year: 2011

The spontaneous level of cytogenetic damage in three plant species (Achyrophorus maculatus (Scop.) L.; Plantago lanceolata L.; and Plantago media L.) growing on the territory of the East Ural Radioactive Trace is studied. The radiation resistance of plants from radioactive and control nonpolluted sites is determined. The effects of additional fractionated irradiation at different doses and the role of antioxidant systems in the formation of the radioprotector effect are examined. It is shown that the level of the mutation process in the plant population growing at the radiation polluted sites is increased compared to the control populations from nonpolluted territories. Additional acute γ irradiation of seeds collected from polluted and nonpolluted territories demonstrates improved radiation resistance of the plants from the polluted territory. In the control population of A. maculatus in the versions with a one-hour interval between fractions, the radiation effect follows the additivity principle; at the same time, at a one-day interval between fractions, a highly significant radioprotective effect is manifested clearly in the experimental population. For higher plants, the enhanced effectiveness of the functioning of the antioxidant systems in plants growing on territories contaminated with radiation is shown for the first time. Thus, the radioprotector mechanisms of low-dose chronic and preliminary irradiation are similar and one of these mechanisms is activation of the antioxidant systems in plants growing under conditions of chronic low-intensity irradiation for long periods of time. © 2011 Pleiades Publishing, Ltd. Source


Ozerov G.K.,RAS Semenov Institute of Chemical Physics | Golubkov M.G.,RAS Semenov Institute of Chemical Physics | Golubkov G.V.,RAS Semenov Institute of Chemical Physics | Malyshev N.S.,RAS Semenov Institute of Chemical Physics | And 2 more authors.
High Energy Chemistry | Year: 2016

The endothermic associative ionization reaction N(2 D) + O(3 P) → NO∗∗ → NO(1Σ+) +e- in slow collisions of the atoms has been considered in terms of the multichannel quantum defect theory. The dependences of the partial and total cross sections of the reaction on the energy of the colliding atoms in the range of 0-0.3 eV have been calculated. It has been shown that the cross sections have a pronounced resonance structure, which is formed as a result of the multichannel interaction of autoionization states of the intermediate Rydberg complex NO∗∗ with dissociative states. The temperature dependence of the reaction rate constant is presented. The results are compared with those of other calculations and available experimental data. © Pleiades Publishing, Ltd., 2016. Source


Sidorova M.V.,Moscow State Pedagogical University | Divochiy A.,CJSC Superconducting Nanotechnology Scontel | Vachtomin Y.B.,CJSC Superconducting Nanotechnology Scontel | Smirnov K.V.,National Research University Higher School of Economics
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

We present an ultrafast NbN Superconducting single-photon detector (SSPD) with active area of 3x3 1/4m2, which reveals better timing performances than a previously developed SSPD with active area of 10x10 1/4m2. The improved SSPD demonstrates the record timing jitter <25 ps, ultra short recovery time <2 ns, extremely low dark counts level, and high detection efficiency (DE) in a wide spectral range from visible to near-infrared. The record parameters were obtained thanks to the development of a new technique of an effective optical coupling between a detector with reduced-size active area and a standard single-mode telecommunication fiber. The advantages of a new approach are experimentally confirmed by performed electro-optical measurements of the device performances. © 2015 COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only. Source


Potapov M.,Moscow State Pedagogical University | Janion C.,Stellenbosch University | Deharveng L.,French Natural History Museum
Zootaxa | Year: 2011

Two new species, Parisotoma sexsetosa sp. nov. and P. obscurocellata sp. nov., are described from the Western Cape Province in South Africa. The former is characterized with 2+2 ocelli and 4 sensilla in the p-row on each side of three first abdominal segments, the latter with 5+5 or more ocelli and 3+3 chaetae on the postlabial area. Both species have only 6 posterior chaetae on dens. A comparison of South African and Asiatic Parisotoma species is given. Sensillar chaetotaxy of the third and fourth abdominal segments is critical in the separation of these geographically distinct groups. Copyright © 2011 Magnolia Press. Source


Matukhina E.V.,Moscow State Pedagogical University | Molodtsova Y.A.,Russian Academy of Sciences | Pozdnyakova Y.A.,Russian Academy of Sciences | Buzin M.I.,Russian Academy of Sciences | And 3 more authors.
Inorganic Chemistry | Year: 2011

The molecular order and thermotropic transitions of tris-cis-tris-trans- dodeca- [organo(dimethylorganosiloxy)]cyclododecasiloxanes {RSi(O)[OSiMe 2R′]} 12 (R = Ph, R′ = Me, CH 2Cl, Vi; R = Me, Et, Vi, R′ = Me) have been investigated using differential scanning calorimetry, thermogravimetric analysis, and X-ray scattering. The cyclododecasiloxanes with phenyl side groups (R = Ph) can form mesomorphic structures within a very wide temperature range. Compounds with R = Me and Vi are liquids and exhibit microphase separation above their glass transition temperature because of the different nature and structure of the organic R and trimethylsiloxy OSiMe 3 side groups. When the side group R = Et, a mesomorphic structure is formed in a substantially more narrow temperature region than that for cycles containing phenyl groups. Thus, the type of side group R in organocyclododecasiloxanes determines their ability for self-ordering into mesomorphic structures and the thermal stability of the mesomorphic state. © 2011 American Chemical Society. Source


Potapov M.B.,Moscow State Pedagogical University | Bu Y.,CAS Shanghai Institutes for Biological Sciences | Gao Y.,CAS Shanghai Institutes for Biological Sciences
ZooKeys | Year: 2011

Te new species Isotogastrura trichaetosa sp. n. is described from a sand beach of Hainan, South China. It difers from all its congeners by 3+3 axial setae on Abd. IV (vs. 2+2) and by the presence of a pair of tubercles on Abd.VI. Te geography of this strictly littoral genus is discussed. © M.B. Potapov et al. Source


Pipin V.V.,Russian Academy of Sciences | Moss D.,University of Manchester | Sokoloff D.,Moscow State Pedagogical University | Hoeksema J.T.,Stanford University
Astronomy and Astrophysics | Year: 2014

Context. Observations show that the photospheric solar magnetic dipole usually does not vanish during the reversal of the solar magnetic field, which occurs in each solar cycle. In contrast, mean-field solar dynamo models predict that the dipole field does become zero. In a recent paper it was suggested that this contradiction could be explained as a large-scale manifestation of small-scale magnetic fluctuations of the surface poloidal field. Aims. Our aim is to confront this interpretation with the available observational data. Methods. Here we compare this interpretation with Wilcox Solar Observatory (WSO) photospheric magnetic field data in order to determine the amplitude of magnetic fluctuations required to explain the phenomenon and to compare the results with predictions from a simple dynamo model which takes these fluctuations into account. Results. We demonstrate that the WSO data concerning the magnetic dipole reversals are very similar to the predictions from our very simple solar dynamo model, which includes both mean magnetic field and fluctuations. The ratio between the rms value of the magnetic fluctuations and the mean field is estimated to be about 2, in reasonable agreement with estimates from sunspot data. The reversal epoch, during which the fluctuating contribution to the dipole is larger than that from the mean field, is about 4 months. The memory time of the fluctuations is about 2 months. Observations demonstrate that the rms of the magnetic fluctuations is strongly modulated by the phase of the solar cycle. This gives additional support to the concept that the solar magnetic field is generated by a single dynamo mechanism rather than also by independent small-scale dynamo action. A suggestion of a weak nonaxisymmetric magnetic field of a fluctuating nature arises from the analysis, with a lifetime of about 1 year. Conclusions. The behaviour of the magnetic dipole during the reversal epoch gives valuable information about details of solar dynamo action. © 2014 ESO. Source


Ding J.,Nanjing University | Potapov M.,Moscow State Pedagogical University | Sokolova E.,Russian Academy of Sciences
Zootaxa | Year: 2011

Two new species of the genus Heteroisotoma Stach are described from Northeast China, North Korea, and Far East of Russia. They are typical members of the genus although sharing spines on the dens with the genus Semicerura Maynard. In all members of Heteroisotoma, three additional processes on the labial palp are discovered and proposed as a new diagnostic generic character. The genus Heteroisotoma is rediagnosed and a key and records of known species are given. A contribution is made to the knowledge of labial palp. Source


Mamalyga M.L.,Moscow State Pedagogical University
Bulletin of Experimental Biology and Medicine | Year: 2014

Circadian changes in heart rhythm structure were studied in rats with decompensated heart failure (experimental group) using the telemetric system for ECG recording and analysis. Analysis of many-day ECG records showed the predominance of various mechanisms of heart rhythm regulation in experimental and control rats throughout 24 h. More severe dysfunction of neuroautonomic mechanisms of regulation in experimental rats was characterized by a circadian dynamics. Many-fold increase in the number of QTc intervals longer than 220 msec and the Tpeak-Tend, most pronounced in experimental animals at night and in the morning, indicated the maximally high risk of fatal ventricular arrhythmias, leading to sudden cardiac death. © 2014 Springer Science+Business Media New York. Source


Sundukov Y.,State Nature Reserve Kurilskiy | Makarov K.V.,Moscow State Pedagogical University
Russian Entomological Journal | Year: 2016

The paper presents some results of field explorations on the ground beetles (Carabidae) carried out in 2008–2015 on Kunashir Island, the southernmost of the Great Kurile Archipelago. Our review concerns previously unpublished, scarce or dubious taxa in the island’s fauna. Of the 70 taxa listed in the paper, 4 species and 1 subspecies are recorded in Russia for the first time, 26 are new to the entire Kurile Archipelago, 1 is new to the Great Kuriles, and 8 are new to Kunashir. A new synonym (Acupalpus inouyei Habu, 1980 = A. storozhenkoi Lafer, 1989, syn.n.) and a new combination (Nebria shibanai shiretokoana Nakane, 1960, stat. rest.) are established. © RUSSIAN ENTOMOLOGICAL JOURNAL, 2016. Source


Mamalyga M.L.,Moscow State Pedagogical University
Bulletin of Experimental Biology and Medicine | Year: 2014

Monitoring of the heart status during increasing stress-induced load allowed us to evaluate heart function after treatment of absence epilepsy with anticonvulsants of various types of action. Functional load against the background of treatment with lamotrigine or convulex had different effects on the dynamics of heart rate variability, hemodynamic parameters of the heart, and risk of life-threatening arrhythmias. The decrease in hemodynamic parameters and ischemic changes in the myocardium after convulex therapy occurred at a lower functional load associated with more pronounced reduction in parasympathetic tone and heart rate variability than after lamotrigine therapy. This suggests that the heart of animals treated with convulex has lower functional capacities and, therefore, stress-induced decompensation and prenosological status developed earlier. © 2014, Springer Science+Business Media New York. Source


Iafolla V.,National institute for astrophysics | Fiorenza E.,National institute for astrophysics | Lefevre C.,National institute for astrophysics | Lucchesi D.M.,National institute for astrophysics | And 9 more authors.
2nd IEEE International Workshop on Metrology for Aerospace, MetroAeroSpace 2015 - Proceedings | Year: 2015

We present here the concept for a new experimental test of the Weak Equivalence Principle (WEP) carried out in the gravity field of the Sun. In this experiment, two test masses of different materials are the central elements of a differential accelerometer with zero baseline. The differential accelerometer is placed on a pendulum, in such a way as to make the common center of mass of the two test masses coincident with the center of mass of the pendulum. Exploiting a very precise centering, such a system should provide a high degree of attenuation of the local seismic noise; this, together with an integration time of the order of tens of days, would allow a verification of the WEP with an accuracy improved by at least an order of magnitude with respect to the state of the art. One of the strengths of this experiment is the know-how acquired from a previous study and technology development (GREAT: General Relativity Accuracy Test) that involved a test of the WEP in the gravity field of the Earth, in free fall inside a co-moving capsule released from a stratospheric balloon. © 2015 IEEE. Source


Pavlova G.V.,Russian Academy of Sciences | Vergun A.A.,Moscow State Pedagogical University | Rybalkina E.Y.,Russian Academy of Medical Sciences | Butovskaya P.R.,Russian Academy of Sciences | Ryskov A.P.,Russian Academy of Sciences
Cell Cycle | Year: 2015

Random amplified polymorphic DNA (RAPD) analysis was adapted for genomic identification of cell cultures and evaluation of DNA stability in cells of different origin at different culture passages. DNA stability was observed in cultures after no more than 5 passages. Adipose-derived stromal cells demonstrated increased DNA instability. RAPD fragments from different cell lines after different number of passages were cloned and sequenced. The chromosomal localization of these fragments was identified and single-nucleotide variations in RAPD fragments isolated from cell lines after 8-12 passages were revealed. Some of them had permanent localization, while most variations demonstrated random distribution and can be considered as de novo mutations. © GV Pavlova, AA Vergun, EY Rybalkina, PR Butovskaya, and AP Ryskov. Source


Kochervinskii V.,Karpov Institute of Physical Chemistry | Malyshkina I.,Moscow State University | Pavlov A.,Karpov Institute of Physical Chemistry | Pakuro N.,Karpov Institute of Physical Chemistry | And 5 more authors.
Journal of Applied Physics | Year: 2015

Processes of relaxation of space charges formed by impurities carriers in isotropic films of vinylidene fluoride and tetrafluoroethylene copolymers of the composition 71/29 and 94/6 were studied. Al and Au symmetric electrodes deposited by evaporation in vacuum have been used. In the case of Al electrodes at temperatures above 100°C, giant low frequency dielectric dispersion was observed, while it is absent in films with Au electrodes. Causes of this phenomenon were studied by the X-ray photoelectron spectroscopy. It was shown that at Al deposition, new functional groups, such as Al-C, Al-F, and Al2O3, which are not characteristic of the copolymer film surface, formed. They were supposed to be traps for impurity carriers and because of this the electrode became partially blocked. This led to appearance of the giant electrode polarization on the metal-polymer boundary, which did not take place in the case of Au electrodes. Parameters of the Au4f line for the copolymer with different contents of fluorine atoms in the chain were analyzed. An increase in the number of these atoms was shown to result in the line shift to higher energies. This phenomenon was associated with an increase in the shift of the electron density from Au atoms to the F ones which has a high affinity to electrons. © 2015 AIP Publishing LLC. Source


Sukhodolskaya E.M.,Russian Academy of Sciences | Vasilyev V.A.,Russian Academy of Sciences | Shibalev D.V.,Russian Academy of Sciences | Shcherbakova O.I.,Moscow State Pedagogical University | And 5 more authors.
Russian Journal of Genetics | Year: 2015

The distribution of the allele and genotype frequencies of polymorphic loci of serotonin receptor genes (HTR1A, rs6295; HTR2A, rs6311; HTR1B, rs6296) in Hadza (n = 197) and Datoga males (n = 230) living in Tanzania was determined. It was shown that the populations significantly differ by the frequencies of alleles and genotypes of the rs6295 locus of the HTR1A gene. The G-allele (0.779) and the genotype G/G (0.590), which are markers of increased risk of suicidal and impulsive behavior, respectively, are revealed in Hadza with high frequency. It was found that the frequency of homozygous G/G of the rs6296 locus of the HTR1B gene, which is a marker of increased risk of outward directed aggression, is higher in Datoga (0.563) than in Hadza (0.457). The allele and genotype frequencies of the rs6311 locus of the HTR2A gene do not differ among the Hadza and Datoga males. The data on the distribution of allele and genotype frequencies of the HTR1A, HTR2A, and HTR1B genes can be used to determine the associations of the identified markers with various forms of human aggressive behavior. © 2015, Pleiades Publishing, Inc. Source


Moss D.,University of Manchester | Sokoloff D.,Moscow State Pedagogical University | Beck R.,MPI fur Radioastronomie | Krause M.,MPI fur Radioastronomie
Astronomy and Astrophysics | Year: 2014

Context. Galactic encounters are usually marked by a substantial increase in synchrotron emission of the interacting galaxies when compared with the typical emission from similar non-interacting galaxies. This increase is believed to be associated with an increase in the star formation rate and the turbulent magnetic fields resulting from the encounter, while the regular magnetic field is usually believed to decrease as a result of the encounter. Aims. We attempt to verify these expectations. Methods. We consider a simple, however rather realistic, mean-field galactic dynamo model where the effects of small-scale generation are represented by random injections of magnetic field resulting from star forming regions. We represent an encounter by the introduction of large-scale streaming velocities and by an increase in small-scale magnetic field injections. The latter describes the effect of an increase in the star formation rate caused by the encounter. Results. We demonstrate that large-scale streaming, with associated deviations in the rotation curve, can result in an enhancement of the anisotropic turbulent (ordered) magnetic field strength, mainly along the azimuthal direction. This leads to a significant temporary increase of the total magnetic energy during the encounter; the representation of an increase in star formation rate has an additional strong effect. In contrast to expectations, the large-scale (regular) magnetic field structure is not significantly destroyed by the encounter. It may be somewhat weakened for a relatively short period, and its direction after the encounter may be reversed. Conclusions. The encounter causes enhanced total and polarized emission without increase in the regular magnetic field strength. The increase in synchrotron emission caused by the large-scale streaming can be comparable to the effect of the increase in the star formation rate, depending on the choice of parameters. The effects of the encounter on the total magnetic field energy last only slightly longer than the duration of the encounter (ca. 1 Gyr). However, a long-lasting field reversal of the regular magnetic field may result. © ESO, 2014. Source


Zubkova V.M.,Russian State Social University | Voskresenskaya O.L.,Mari State University | Gaponenko A.V.,Russian State Social University | Zubkov N.V.,Moscow State Pedagogical University | Belozubova N.Y.,Russian State Social University
International Journal of Ecology and Development | Year: 2016

The article presents the study results of field trials on accumulation and the distribution of heavy metals (HM) in the vegetative and generative parts of crop plants. The study permits to identify the localization of HM in the different parts of plants, develop reliable methods for evaluating the quality of the crop yield and find out the ways for restrict the flow of toxic substances to the human body. The purpose of the research is to identify the plants resistance to the HM soil contamination due to contamination level and intensity of metal absorption by plants. The study established the more intensive absorption of heavy metals in the initial period of plant growth and different influence on plants productivity. © 2016 by CESER PUBLICATIONS. Source


Moss D.,University of Manchester | Mikhailov E.,Moscow State Pedagogical University | Silchenko O.,Moscow State University | Sokoloff D.,Moscow University | And 2 more authors.
Astronomy and Astrophysics | Year: 2016

Context. Many galaxies contain magnetic fields supported by galactic dynamo action. The investigation of these magnetic fields can be helpful for understanding galactic evolution; however, nothing definitive is known about magnetic fields in ring galaxies. Aims. Here we investigate large-scale magnetic fields in a previously unexplored context, namely ring galaxies, and concentrate our efforts on the structures that appear most promising for galactic dynamo action, i.e. outer star-forming rings in visually unbarred galaxies. Methods. We use tested methods for modelling α-Ω galactic dynamos, taking into account the available observational information concerning ionized interstellar matter in ring galaxies. Results. Our main result is that dynamo drivers in ring galaxies are strong enough to excite large-scale magnetic fields in the ring galaxies studied. The variety of dynamo driven magnetic configurations in ring galaxies obtained in our modelling is much richer than that found in classical spiral galaxies. In particular, various long-lived transients are possible. An especially interesting case is that of NGC 4513, where the ring counter-rotates with respect to the disc. Strong shear in the region between the disc and the ring is associated with unusually strong dynamo drivers in such counter-rotators. The effect of the strong drivers is found to be unexpectedly moderate. With counter-rotation in the disc, a generic model shows that a steady mixed parity magnetic configuration that is unknown for classical spiral galaxies, may be excited, although we do not specifically model NGC 4513. Conclusions. We deduce that ring galaxies constitute a morphological class of galaxies in which identification of large-scale magnetic fields from observations of polarized radio emission, as well as dynamo modelling, may be possible. Such studies have the potential to throw additional light on the physical nature of rings, their lifetimes, and evolution. © ESO, 2016. Source


Huang Z.Q.,University of Jinan | Wang W.,Moscow State Pedagogical University | Yan T.,Shandong University
Advanced Materials Research | Year: 2013

Low carbon economy is the main direction of the future development of China. The hi-tech industry area has the features of tech-intensified, high energy consumption, high pollution, to develop hi-tech industry is good for the transfer from traditional industry to the low carbon economy mode. As a big province of China, it is imperative for Shandong Province to develop the low-carbon economy. Therefore scientific solution on carbon emissions of high-tech industrial area in Shandong province is a problem for government and academic workers to have to face and resolve. This paper analyzes the low-carbon economic situation of high-tech industry in Shandong province, and puts forward some countermeasures for low carbon economy development of high-tech industry in Shandong province. © (2013) Trans Tech Publications, Switzerland. Source


Artemov S.N.,The Graduate Center, CUNY | Yavorskaya T.,Moscow State Pedagogical University
Journal of Logic and Computation | Year: 2012

The standard first-order reading of modality does not bind individual variables, i.e. if x is free in F(x), then x remains free in □F(x). Accordingly, if □ stands for 'provable in arithmetic,' ∀x□F(x) states that F(n) is provable for any given value of n = 0,1,2,...; this corresponds to a de re reading of modality. The other, de dicto meaning of □F(x), suggesting that F(x) is derivable as a formula with a free variable x, is not directly represented by a modality, though, semantically, it could be approximated by compound constructions, e.g. □∀xF(x). We introduce the first-order logic FOS4∗ in which modalities can bind individual variables and, in particular, can directly represent both de re and de dicto modalities. FOS4∗ extends first-order S4 and is the natural forgetful projection of the first-order logic of proofs FOLP. The same method of introducing binding modalities obviously works for other modal logics as well. © The Author, 2013. Source


Osad'ko I.S.,Russian Academy of Sciences | Shchukina A.L.,Moscow State Pedagogical University
Bulletin of the Russian Academy of Sciences: Physics | Year: 2012

Fluctuations in the time instants of photon emission in donor and acceptor molecules with triplet levels are calculated by the Monte Carlo method. The statistical processing of these time instants makes its possible to obtain the distribution of photon number in both fluorescences. The presence of the triplet level makes it impossible to transfer the energy from donor to acceptor completely. © Allerton Press, Inc., 2012. Source


Shilin I.A.,Moscow Aviation Institute | Nizhnikov A.I.,Moscow State Pedagogical University
Journal of Physics: Conference Series | Year: 2012

We consider the representation of Lorentz group in the spaces of homogeneous functions on cone and hyperboloid. Using the Poisson transform, which maps a function from the first space into the corresponding function from the second space, we derive some formulas containing Legendre functions. Using the restriction of the representation in the first space on a one-parameter subgroup of hyperbolic rotations, we obtain another formula for Legendre functions. All obtained formulas are new. Source


Andrievskii A.M.,Research Institute of Organic Intermediate Products and Dyes | Linko R.V.,Peoples Friendship University of Russia | Grachev M.K.,Moscow State Pedagogical University
Russian Journal of Organic Chemistry | Year: 2013

The reaction of 2,4,7-trinitro-9,10-phenanthrenequinone with CuCl in aqueous dimethylformamide or dimethyl sulfoxide at room temperature, followed by acidification, gave a stable red complex of 2,4,7-trinitro-9,10- dihydroxyphenanthrene with a solvent molecule. On heating in a polar aprotic solvent in the presence of CuCl or other metal salt, 2,4,7-trinitro-9,10- phenanthrenequinone underwent benzilic acid rearrangement with formation of 2,4,7-trinitrofluorenone. The nitration of 9,10-sulfuryldioxyphenanthrene and subsequent decomposition of cyclic sulfates afforded previously unknown 1,3,6-trinitro- and 1,8-dinitro-9,10-phenanthrenequinones. © 2013 Pleiades Publishing, Ltd. Source


Anosov A.A.,Russian Academy of Medical Sciences | Nemchenko O.Y.,Moscow State University | Less Y.A.,Moscow State Pedagogical University | Kazanskii A.S.,RAS Institute of Radio Engineering and Electronics | Mansfel'd A.D.,RAS Institute of Applied Physics
Acoustical Physics | Year: 2015

Model acoustic thermometry experiments were conducted during heating of an aqueous liposome suspension. Heating was done to achieve the liposome phase transition temperature. At the moment of the phase transition, the thermal acoustic signal achieved a maximum and decreased, despite continued heating. During subsequent cooling of the suspension, when lipids again passed through the phase transition point, the thermal acoustic signal again increased, despite a reduction in temperature. This effect is related to an increase in ultrasound absorption by the liposome suspension at the moment of the lipid phase transition. The result shows that acoustic thermography can be used to control targeted delivery of drugs mixed in thermally sensitive liposomes, the integrity of which is violated during heating to the phase transition temperature. © 2015, Pleiades Publishing, Ltd. Source


Pankratov D.A.,Moscow State Pedagogical University
Inorganic Materials | Year: 2014

Various compositions of oxo derivatives of iron reacting with sodium peroxide have been studied by Mössbauer spectroscopy. We have examined several mathematical models of the measured spectra. The results obtained are inconsistent with hypotheses made previously that such conditions may lead to the formation of compounds of iron in oxidation states above (6+). We demonstrate that a large excess of an alkali peroxide leads, most likely, to the formation of at least two iron(V) derivatives in tetrahedral coordination. In their Mössbauer spectra, they have isomer shifts of -0.45 and -0.51 mm/s and unusually large quadrupole splittings: 1.32 and 1.94 mm/s (at room temperature). © 2014 Pleiades Publishing, Ltd. Source


Godin V.N.,Moscow State Pedagogical University
Contemporary Problems of Ecology | Year: 2012

Sexual systems and association with several ecological and life history attributes were examined for 977 native angiosperms of subclass Rosidae in Siberia. The majority of angiosperms in Siberia are hermaphrodites (87.7%, N = 867). The most widespread forms of sexual differentiations are andromonoecy, gynodioecy, and dioecy. The rarest forms of sexual differentiations are monoecy, trioecy, and androdioecy. Seven of 34 families are the richest in species with sexual differentiation: Aceraceae, Elaeagnaceae, Haloragaceae, Rhamnaceae, Dipsacaceae, Apiaceae, and Geraniaceae. © 2012 Pleiades Publishing, Ltd. Source


Bazhenov S.L.,RAS Enikolopov Institute of Synthetic Polymer Materials | Rogozinskii A.K.,RAS Semenov Institute of Chemical Physics | Mal'kov S.S.,Moscow State Pedagogical University | Berlin A.A.,RAS Semenov Institute of Chemical Physics
Polymer Science - Series A | Year: 2011

The effect of tensile strain on the acoustic elastic modulus of Rusar, Armos, and SVM aramid fibers is studied. The elastic modulus is found to decrease during stretching to a strain on the order of 0.2%; at high strains, an increase in the modulus is observed. The effect is revealed both in a complex thread consisting of hundreds of parallel fibers and in a single fiber. © Pleiades Publishing, Ltd., 2011. Source


Nifant'ev I.E.,RAS Topchiev Institute of Petrochemical Synthesis | Batashev S.A.,Tula State Pedagogical University | Toloraya S.A.,Moscow State Pedagogical University | Tavtorkin A.N.,RAS Topchiev Institute of Petrochemical Synthesis | And 4 more authors.
Kinetics and Catalysis | Year: 2012

Cyclohexene hydrocarbomethoxylation catalyzed by Pd(OAc) 2-p-Toluenesulfonic acid-diphos-phine systems has been investigated for a wide range of diphosphine structures and concentrations. The fac-Tors controlling the activity of the palladium-containing catalysts include the hydrocarbon moiety of the ligand and the mutual arrangement of the phosphine groups. A comparison between the promoting effects of monophosphine and diphosphine ligands has demonstrated that bridged trans-diphosphines are more effi-cient in kinetic and concentration terms (TOF and P/Pd ratio, respectively). In particular, the promoting activity of diphosphines is one order of magnitude higher than that of triphenylphosphine, and this effect is attained at 8-65 times lower P/Pd ratios. It is discussed how the catalytic properties of the systems depend on the chelate effect and on the geometric compatibility between the diphosphine structure and the arrange-ment of vacant s and d orbitals of the palladium center. © Pleiades Publishing, Ltd., 2012. Source


Spiridonov S.N.,Mordovian State Pedagogical Institute | Sarychev V.S.,Galichya Gora Nature Reserve | Okolelov A.Y.,Michurinsk State Pedagogical Institute | Isakov G.N.,Chuvash State Pedagogical University | Sukharev E.A.,Moscow State Pedagogical University
Biology Bulletin | Year: 2011

The rare bird fauna of industrial wetlands has been studied in the forest-steppe zone of European Russia during the nesting period. A total of 146 species have been recorded, including 40 rare species listed in the regional Red Data Books. Facts of their nesting (in many cases, exceptional in the region) have been revealed. Evidence is presented for the significance of industrial wetlands for the conservation and propagation of rare bird species. © 2011 Pleiades Publishing, Ltd. Source


Inna M.,Sergey Esenins State Budget Educational Institution | Yuri M.,Moscow State Pedagogical University
2015 IEEE 13th International Scientific Conference on Informatics, INFORMATICS 2015 - Proceedings | Year: 2015

Contemporary perspectives and trends of information society development in Russia assume the implementation in a way of people's life fundamentally new technologies. As you can see, a crucial issue is the availability of development software complex as a necessary part in the progressing information projects. Therefore, it is important to study the object-oriented programming languages with the adaptation of programmes for mobile devices as an essential part in the system of General education of computer science. © 2015 IEEE. Source


Avdeev Ya.G.,RAS Frumkin Institute of Physical Chemistry and Electrochemistry | Luchkin A.Yu.,Moscow State Pedagogical University | Kuznetsov Yu.I.,RAS Frumkin Institute of Physical Chemistry and Electrochemistry
Protection of Metals and Physical Chemistry of Surfaces | Year: 2013

Adsorption of IFKhAN-92 inhibitor on low-carbon steel from 2.0 M HCl solution was studied with the use of impedance spectroscopy. The adsorption is found to be described by the Temkin isotherm with relatively high free adsorption energy ΔG ads = 42 kJ/mol. The inhibitor is proposed to be chemisorbed on the surface. This hypothesis is supported by the satisfactory approximation of the adsorption kinetics by the Roginsky-Zeldovich equation and the strong protective aftereffect of the inhibitor adsorbed on the steel. © 2013 Pleiades Publishing, Ltd. Source


Sobolev Y.I.,Russian Academy of Sciences | Naumov A.V.,Moscow State Pedagogical University | Vainer Y.G.,Moscow Institute of Physics and Technology | Kador L.,University of Bayreuth
Journal of Chemical Physics | Year: 2014

We studied the spectral dynamics of single fluorescent dye molecules embedded in ultrathin films (5 - 100 nm) of the amorphous polymer polyisobutylene at cryogenic temperatures and its variation with film thickness. Noticeable portion of molecules in the ensemble shows a behavior which is inconsistent with the standard tunneling model: Their spectral lines are subject to irreversible spectral jumps, continuous shifting, and abrupt chaotic changes of the linewidth or jumping rate. In films thinner than 100 nm, the occurrence of "non-standard" spectral behavior increases with decreasing sample thickness at fixed excitation intensity. In addition, it also increases with laser intensity. © 2014 AIP Publishing LLC. Source


Makhov A.S.,Russian State Social University | Stepanova O.N.,Moscow State Pedagogical University | Shmeleva S.V.,Russian State Social University | Petrova E.A.,Russian State Social University | Dubrovinskaya E.I.,Russian State Social University
Biosciences Biotechnology Research Asia | Year: 2015

The following article focuses on the characteristic of the basic sports for disabled people, on the analysis of the disadvantages of the organization and carrying out sports competitions for disabled people. The list of attributes (signs) of successfully organized and qualitatively held competition for disabled people is given in the article. group problems organizing sports competitions for persons with disabilities. Source


Koblik E.A.,Moscow State University | Volkov S.V.,RAS Severtsov Institute of Ecology | Mosalov A.A.,Moscow State Pedagogical University
Zoologicheskii Zhurnal | Year: 2014

In the last two decades, the phylogeny of passeriform birds was significantly revised after the development of methods of molecular analysis. Many current solutions of the molecular phylogenetics seem logical, but some of the new ideas are contrary to those of the traditional morphological systematics and biogeography. This article critically analyzes some controversial results of molecular studies, including the composition and status of some bird groups from the superfamilies Emberizoidea, Sylvoidea, and the families Eurylaimidae, Sylviidae, Timaliidae, Fringillidae, Donacobiidae, and Thraupidae. Source


Shatalov O.A.,Moscow State Pedagogical University | Svistunov A.A.,Moscow State University | Napolov Y.K.,Moscow State University | Bukhvostov A.A.,Moscow State University | And 2 more authors.
Magnesium Research | Year: 2012

A 25Mg2+ -operated hyper-activation of ATP synthesis has been investigated in mitochondria (Mt) isolated from iron-rich and iron-poor rat tissues: spleen, liver, skeletal muscle, myocardium, kidneys, brain. Both magnetic (25Mg) and non-magnetic (24Mg) magnesium isotopes were separately administered to estimate the degree of the ATP production related to the magnetic isotope effect (MIE) of 25Mg2+ as a function of the amount of Mt-endogenous iron ions. A strong but negative (r=-0.88) correlation between the 25Mg-MIE degree and the Mt[Fe2+] values was found. The physical and biophysical mechanisms behind these phenomena, as well as the possible impact of these data on further biochemical and pharmacological studies involving 25Mg-promoted nuclear spin selectivity in mitochondrial function, are under discussion. Source


Taranets I.P.,Moscow State University | Smurov A.V.,Moscow State University | Kuznetsova N.A.,Moscow State Pedagogical University
Moscow University Biological Sciences Bulletin | Year: 2012

Spatial structure of soil-dwelling Collembola populations in samples of different sizes (100, 36, 12, and 3 cm2) in the uppermost of the soil of pine wood has been considered. The research has revealed the "effective size" of samples (12 cm2) for an appropriate assessment of number and characteristics of Collembola spatial distribution, as well as necessary quantity of samples for the accounting results to be representative. © 2012 Allerton Press, Inc. Source


Smirnov K.,National Research University Higher School of Economics | Vachtomin Y.,Moscow State Pedagogical University | Divochiy A.,CJSC Superconducting Nanotechnology Scontel | Antipov A.,CJSC Superconducting Nanotechnology Scontel | Goltsman G.,National Research University Higher School of Economics
Applied Physics Express | Year: 2015

We found that background radiation limits the dark count rates of superconducting single photon detectors coupled to standard single mode optical fibers to a minimum level when the source temperature of the photons is close to 300 K. We measured this level to be 103 cps, which was confirmed by a theoretical analysis of the background radiation influence. We also investigated the filtering-effect of cooled single mode optical fibers with different bending diameters and showed that for superconducting photon receivers with operating wavelengths below 2 μm the minimum dark count rate can be significantly decreased down to 0.1 cps. © 2015 The Japan Society of Applied Physics Source


Baoulina I.N.,Moscow State Pedagogical University
Finite Fields and their Applications | Year: 2016

Using properties of Gauss and Jacobi sums, we derive explicit formulas for the number of solutions to a diagonal equation of the form x1 2m+⋯+xn 2m=0 over a finite field of characteristic p≡±3(mod8). All of the evaluations are effected in terms of parameters occurring in quadratic partitions of some powers of p. © 2016 Elsevier Inc. All rights reserved. Source


Gorshenev V.N.,RAS Emanuel Institute of Biochemical Physics | Ershov Y.A.,Moscow State Technical University | Teleshev A.T.,Moscow State Pedagogical University | Sklyanchuk E.D.,Semashko Railroad Clinical Hospital | And 2 more authors.
Biomedical Engineering | Year: 2014

New technological approaches based on biocompatible nanocomposites with hydroxyapatite (HA) and collagen matrix are described. Optimal conditions of HA synthesis in collagen fibers and its use in bone implants are discussed. © 2014 Springer Science+Business Media New York. Source


Mitrofanov V.G.,Russian Academy of Sciences | Chekunova A.I.,Russian Academy of Sciences | Proshakov P.A.,Russian Academy of Sciences | Barsukov M.I.,Moscow State Pedagogical University
Russian Journal of Developmental Biology | Year: 2013

Ras genes were first identified in the 1960s as transforming oncogenes that caused tumors in rats infected with Harvey and Kirsten sarcoma viruses (Ha-ras and Ki-ras oncogenes, accordingly). Subsequently, transforming ras genes were found in human cancer cells. Further investigations of neuroblastoma cells resulted in the finding of the third ras gene in the human, which was called N-ras. Ras gene products play an important role in the processes of cellular proliferation and differentiation and are controlled by receptor tyrosine kinases. Using drosophila as a model object allowed us to perform a successful genetic analysis while studying the functions of ras genes. Three polytene chromosome bands were detected in D. melanogaster with the help of the v-Ha ras sampling. According to Bridges' map, all three bands (Dras1, Dras2, Dras3) were mapped to regions 85D, 64B, and 62B of chromosome 3. Among them, only Dras1 has a common origin with ras genes of mammals. Although there are numerous investigations of the role played by ras genes in the development of insects, this problem is still not fully understood. The importance of ras gene variations in the course of the evolutionary process has been insufficiently studied as well. Currently, Ras target proteins are actively identified, their signal pathways, as well as effects of influencing these pathways in the drosophila tissues, are studied in the cells of yeast and mammals. The main functions of Ras protein is in the signaling pathways controlling mutations during drosophila's morphogenesis and the connections of ras gene with phenotypic symptoms of tumors. © 2013 Pleiades Publishing, Ltd. Source


Lesin V.I.,Russian Academy of Sciences | Klepikov I.A.,Moscow State Pedagogical University
Neftyanoe khozyaystvo - Oil Industry | Year: 2015

Viscosity of petroleum dispersed systems has been investigated in the region of 'anomalous' dependence of shear stress on shear rate under shear rate increasing is accompanied by diminishing of stress. It was shown that fluid flow could be accompanied by oscillations of fluid expenditure which reduce well and tubing productivity. The ways of physical fields application to overcome those oscillations are given. Source


Nurmi P.,University of Turku | Heinamaki P.,University of Turku | Teerikorpi P.,University of Turku | Chernin A.,Moscow State Pedagogical University
AIP Conference Proceedings | Year: 2010

Dark energy is one of the fundamental features of the modern cosmology. We use dark matter cosmological simulations to search for local group type systems and study the motions of halos. In simulations we see signinificant variations of motions for the infalling galaxies, but beyond some distance the galaxies follow the Hubble flow. © 2010 American Institute of Physics. Source


Beck M.,University of Konstanz | Klammer M.,University of Konstanz | Lang S.,University of Konstanz | Leiderer P.,University of Konstanz | And 5 more authors.
Physical Review Letters | Year: 2011

Using time-domain terahertz spectroscopy we performed direct studies of the photoinduced suppression and recovery of the superconducting gap in a conventional BCS superconductor NbN. Both processes are found to be strongly temperature and excitation density dependent. The analysis of the data with the established phenomenological Rothwarf-Taylor model enabled us to determine the bare quasiparticle recombination rate, the Cooper pair-breaking rate and the electron-phonon coupling constant, λ=1.1±0.1, which is in excellent agreement with theoretical estimates. © 2011 American Physical Society. Source


Pernice W.H.P.,Yale University | Pernice W.H.P.,Karlsruhe Institute of Technology | Schuck C.,Yale University | Minaeva O.,Boston University | And 5 more authors.
Nature Communications | Year: 2012

Ultrafast, high-efficiency single-photon detectors are among the most sought-after elements in modern quantum optics and quantum communication. However, imperfect modal matching and finite photon absorption rates have usually limited their maximum attainable detection efficiency. Here we demonstrate superconducting nanowire detectors atop nanophotonic waveguides, which enable a drastic increase of the absorption length for incoming photons. This allows us to achieve high on-chip single-photon detection efficiency up to 91% at telecom wavelengths, repeatable across several fabricated chips. We also observe remarkably low dark count rates without significant compromise of the on-chip detection efficiency. The detectors are fully embedded in scalable silicon photonic circuits and provide ultrashort timing jitter of 18 ps. Exploiting this high temporal resolution, we demonstrate ballistic photon transport in silicon ring resonators. Our direct implementation of a high-performance single-photon detector on chip overcomes a major barrier in integrated quantum photonics. © 2012 Macmillan Publishers Limited. Source


Teerikorpi P.,University of Turku | Chernin A.D.,University of Turku | Chernin A.D.,Moscow State Pedagogical University
Astronomy and Astrophysics | Year: 2010

Aims. Here we continue to discuss the principle of the local measurement of dark energy using the normalized Hubble diagram describing the environment of a system of galaxies. Methods. We calculate the present locus of test particles injected a fixed time ago (~the age of the universe), in the standard Λ cosmology and for different values of the system parameters (the model includes a central point mass M and a local dark energy density ρloc) and discuss the position of the zero-gravity distance Rv in the Hubble diagram. Results. Our main conclusion are: 1) when the local DE density ρloc is equal to the global DE density ρv, the outflow reaches the global Hubble rate at the distance R2 = (1+z v)Rv, where zv is the global zero-acceleration redshift (â‰̂ 0.7 for the standard model). This is also the radius of the ideal Einstein-Straus vacuole, 2) for a wide range of the local-to-global dark energy ratio ρloc/ρv, the local flow reaches the known global rate (the Hubble constant) at a distance R2 ga1.5 × Rv. Hence, Rv will be between R2/2 and R2, giving upper and lower limits to ρloc/M. For the Local Group, this supports the view that the local density is near the global one. © 2010 ESO. Source


Rasulova G.K.,RAS Lebedev Physical Institute | Pentin I.V.,Moscow State Pedagogical University | Brunkov P.N.,RAS Ioffe Physical - Technical Institute | Egorov A.Y.,National Research University of Information Technologies
Journal of Applied Physics | Year: 2016

Damped oscillations of the current were observed in the transient current pulse characteristics of a 30-period weakly coupled GaAs/AlGaAs superlattice (SL). The switching time of the current is exponentially decreased as the voltage is verged towards the current discontinuity region indicating that the space charge necessary for the domain boundary formation is gradually accumulated in a certain SL period in a timescale of several hundreds ns. The spectral features in the electroluminescence spectra of two connected in parallel SL mesas correspond to the energy of the intersubband transitions and the resonance detuning of subbands caused by charge trapping in the quantum wells (QWs) residing in a region of the expanded domain boundary. The obtained results support our understanding of the origin of self-oscillations as a cyclic dynamics of the subband structure in the QWs forming the expanded domain boundary. © 2016 Author(s). Source


Zyk N.V.,Moscow State University | Gavrilova A.Y.,Moscow State University | Bondarenko O.B.,Moscow State University | Mukhina O.A.,Moscow State University | Tikhanushkina V.N.,Moscow State Pedagogical University
Russian Journal of Organic Chemistry | Year: 2011

Reactions of potassium dihaloiodates with arylcyclopropanes and polycyclic compounds containing a cyclopropane fragment characterized by different degrees of strain lead to formation of mixed 1,3-halogenation products. If iodohalogenation should give rise to products having a iodine atom in the benzylic position, 1,3-dichloro or 1,3-dibromo derivatives are formed. Iodohalogenation of exo-tricyclo[3.2.1.0 2,4]octane is stereoselective and is accompanied by Wagner-Meerwein rearrangement. © 2011 Pleiades Publishing, Ltd. Source


Burmistrova A.V.,Moscow State Pedagogical University | Devyatov I.A.,Moscow Institute of Physics and Technology | Batov I.E.,Moscow Institute of Physics and Technology
EPL | Year: 2016

We present a microscopic theory of the superconducting proximity effect in a semiconducting thin film with a spin-orbit interaction (NSO) in an external magnetic field. We demonstrate that an effective 1D Hamiltonian which describes induced superconductivity in NSO in contact with a usual s-wave superconductor possesses not only a spin-singlet induced superconducting order parameter term, as commonly adopted, but also a spin triplet order parameter term.Using this new effective Hamiltonian we confirm previous results for a normal current across contacts of NSO with a normal metal and for a Josephson current with the same NSO with induced superconductivity, obtained previously in the framework of the phenomenological Hamiltonian without spin-triplet terms. However, a calculated current-phase relation across the transparent contact between NSO with induced superconductivity in magnetic field and a usual s-wave superconductor differs significantly from previous results. We suggest the experiment which can confirm our theoretical predictions. © EPLA, 2016. Source


Vanyavina L.V.,Moscow State Pedagogical University
Entomological Review | Year: 2013

Data on the species composition, structure, and seasonal changes in the dynamic density of surfaceactive Collembola communities in meadows and forests of Moscow Province are provided. A total of 27 epigeic species were recorded from May to October in four biotopes (18-24 in each biotope) using pitfall traps. All of the communities studied consist of 1-2 dominant species, several subdominants, and 11-19 rare species, with the prevalence of Entomobryomorpha and Symphypleona. The springtail communities in the studied forest and meadow biotopes are very similar in species composition but differ in the relative abundance of individual species. The total dynamic density of epigeic species was shown to vary during the season, being significantly dependent on the type of biotope and the time of survey. The maximum density was recorded at the beginning of the active season (May-June); the minimum density was observed in August. © 2013 Pleiades Publishing, Ltd. Source


Vanyavina L.V.,Moscow State Pedagogical University
Entomological Review | Year: 2013

The phenology and size structure of populations of three species of Dicyrtomidae (Dicyrtomina minuta, Dicyrtoma fusca, and Ptenothrix setosa) were studied by the pitfall trap method in a forbs meadow of Moscow Province in 2009-2011. The temperature and humidity were normal in 2009, whereas the spring and summer of 2010 were abnormally hot and dry. The life cycles of three species of Dicyrtomidae were shown to be similar. These species hibernate as eggs which hatch from May to the end of summer. In autumn, the populations consist only of mature adults. In Moscow Province, populations of surface-dwelling Dicyrtomidae may be restored quickly after summer drought. © 2013 Pleiades Publishing, Ltd. Source


Orlova E.M.,Moscow State Pedagogical University
Life Science Journal | Year: 2014

Vladimir Mikhailovich Bekhterev (1857-1927) - an outstanding Russian scientist, physician and psychologist. After graduating from high school in Vyatka in 1873 VM Bekhterev enters the Medico-Surgical Academy in St. Petersburg and graduated from it in 1878. Upon completion of the Academy of V.M. Bekhterev won the competition and was sent on a scientific mission to Europe. Abroad scientist worked in the laboratories and clinics of leading European scientists (K. Westphal, P. Flechsig, K. Ludwig, J. Charcot, W. Wundt). Upon returning from a scientific V.M. Bekhterev was appointed professor and chair of psychiatry at Kazan University. He also opened in Russia first experimental psychophysiological laboratory at the University of Kazan' in 1885. V.M. Bekhterev saw a serious need to develop an objective method for the study of personality and development of a comprehensive doctrine of man. Source


Murav'eva O.V.,Moscow State Pedagogical University
Journal of Computer and Systems Sciences International | Year: 2010

A linear discrete system x(k +1) = A x(k) with a given set of attainability (c, x(N)) ≥ c0 is considered. The influence of small variations of problem parameters on the attainability of a required set is investigated. For the control system x (k+1) = Ax(k)+ Bu(k), the choice of a controller as a feedback in state u(k) = Kx(k) is studied. © Pleiades Publishing, Ltd., 2010. Source


Cheverikina E.A.,The Institute of Pedagogic and Psychology of Professional Education of Russian Academy of Education | Leifa A.V.,Moscow State Pedagogical University | Kora N.A.,Amur State University | Badalyan J.V.,Amur State University | And 2 more authors.
Life Science Journal | Year: 2014

To identify character accentuation students who are prone to addiction will allow to adjust their socialization process during the training period in order to increase its effectiveness, as well as it will contribute to the creation of effective psycho- educational programs aimed at reducing the level of their addiction to drugs. Objective: to identify the influence of experimental character accentuation susceptibility to drug addiction among students. Methods: The study is based on concept of accented personalities by K. Leonhard and typology of accented personalities by A.E. Lichko. Psychological testing was as an empirical research method. Data processing was performed using the Statistical Package for Social Sciences (SPSS) v.17. Results: It was found out that the students of higher education compared to students of secondary vocational education had susceptibility to drug addiction associated with less accentuation of character. This can be explained by the fact that those who are going to the universities to study are more socially adapted, they have a higher level of self-control and self-discipline, able by virtue of age and education to control outbursts of emotions and behavior. The findings of the study data will allow to adjust psycho-educational programs aimed at reducing the propensity to addiction among students based on character accentuation detected among students of higher and vocational education. Source


Pankratov D.A.,Moscow State Pedagogical University | Yurev A.I.,Moscow State University
Bulletin of the Russian Academy of Sciences: Physics | Year: 2013

Mössbauer spectroscopy and X-ray powder diffractometry (XRD) phase analysis are used to study mixed vanadates with the composition Al x Fe3 - x V3O12, where x is 0, 0.3, 1.0, 1.5, 2.0, 2.7, and 3.0. Mössbauer spectroscopy is used to study the distribution of trivalent cations over different crystallographic positions. It is shown that the distribution of aluminum atoms differs from those expected from statistic and thermodynamic models. © 2013 Allerton Press, Inc. Source


Frolov K.V.,RAS Shubnikov Institute of Crystallography | Zagorskii D.L.,Gubkin Russian State University of Oil and Gas | Lyubutin I.S.,RAS Shubnikov Institute of Crystallography | Korotkov V.V.,Mendeleev University of Chemical Technology | And 4 more authors.
JETP Letters | Year: 2014

Arrays of iron nanowires prepared by the method of galvanic filling of polymer track-etched membrane pores (matrix synthesis) under different electrolysis modes and electrolyte temperatures have been studied. The conditions of the synthesis have been analyzed. The optimal composition and electrolyte temperature have been found. The phase composition and magnetic properties of nanowires have been studied using the methods of electron microscopy, X-ray diffraction, elemental energy-dispersive microanalysis, and Mössbauer spectroscopy. The average nanowire diameter is 100-200 nm. The length varies from 6 to 10 μm. The surface density is ~108 cm-2 at the average distance to each other of about 1 μm. It has been established that the basis of nanowires is formed by the metal iron nanocomposite that manifests the magnetic properties of bulk α-Fe. It has been found that the preferred orientation of the magnetization inside the iron nanowires arises for an array prepared at a potential of -750 mV. © 2014 Pleiades Publishing, Inc. Source


Slitikov P.V.,Moscow State Technical University | Rasadkina E.N.,Moscow State Pedagogical University
Macroheterocycles | Year: 2015

Phosphorylation of 2,2’-dihydroxy-1,1’-dinaphthylmethane with diamidophosphites with different substituents at phosphorus atom was investigated. It was demonstrated that leaving of either two amide groups or phenyl group occurs upon formation of 1,3,2-dioxaphosphacine. Phosphamacrocyclic systems containing fragments of 2,2’-dihydroxy-1,1’-dinaphthylmethane and aromatic diolsresorcinol and 1,3-dihydroxynaphthalenwere synthesized, their low stability in solution is specified. Oxidation reactions of the synthesized compounds were studied. © ISUCT Publishing. Source


Minyaev M.E.,RAS Topchiev Institute of Petrochemical Synthesis | Nifant'ev I.E.,RAS Topchiev Institute of Petrochemical Synthesis | Tavtorkin A.N.,RAS Topchiev Institute of Petrochemical Synthesis | Korchagina S.A.,RAS Topchiev Institute of Petrochemical Synthesis | And 2 more authors.
Acta Crystallographica Section E: Structure Reports Online | Year: 2015

Crystals of the title compound, [Li{OOP(O-2,6-iPr2C6H3)2}(CH3OH)3]·CH3OH or [Li(C24H34O4P)(CH3OH)3]·CH3OH, have been formed in the reaction between HOOP(O-2,6-iPr2C6H3)2 and LiOH in methanol. The title compound is of interest as it represents the first reported crystal structure of the family of lithium phosphate diesters. The {Li(CH3OH)3[O2P(O-iPr2C6H3)2]} unit displays the Li atom in a slightly distorted tetrahedral coordination environment and exhibits one intramolecular O - H⋯O hydrogen bond between a coordinating methanol molecule and the terminal non-coordinating O atom of the phosphate group. The unit is connected with two non-coordinating methanol molecules through two intermolecular O - H⋯O hydrogen bonds, and with a neighbouring unit through two other O - H⋯O interactions. These intermolecular hydrogen bonds lead to the formation of infinite chains along [100]. There are no significant interactions between the chains. Source


Kolpakov R.,Moscow State Pedagogical University | Kucherov G.,French Institute for Research in Computer Science and Automation | Kucherov G.,J V Poncelet Laboratory | Ochem P.,LRI | Ochem P.,J V Poncelet Laboratory
Information Processing Letters | Year: 2010

The first two authors have shown [1,2] (Kolpakov and Kucherov, 1999, 2000) that the sum of the exponents (and thus the number) of maximal repetitions of exponent at least 2 in a word (also called runs) is linear with respect to the length of the word. The exponent 2 in the definition of a run may seem arbitrary. In this paper, we consider maximal repetitions of exponent strictly greater than 1. © 2010 Elsevier B.V. All rights reserved. Source


Kozyreva V.S.,Moscow State Pedagogical University | Kusakin A.V.,National Space Agency | Menke J.,Starlight Farm Observatory
Information Bulletin on Variable Stars | Year: 2012

The eclipsing variable star GSC 4487-0347 is a recently discovered binary system. We carried out observations of the eclipsing binary using a CCD-array in 2009, 2011 at the Tien Shan Observatory. The B, V, R magnitudes were measured and the spectral range of components were estimated. The photometric elements were derived from the light curve. We found the apsidal period is U=160+-6 years. Source


Zagorskiy D.L.,Gubkin Russian State University of Oil and Gas | Korotkov V.V.,Russian Academy of Sciences | Frolov K.V.,Russian Academy of Sciences | Sulyanov S.N.,Russian Academy of Sciences | And 3 more authors.
Physics Procedia | Year: 2015

Specially prepared polymer track membranes were used as matrixes for the fabrication of nanosize metal wires. Nanowires of magnetic metals (Co, Ni and Fe) were prepared by electrodeposition into the pores. The nanowires properties and their dependence on electrodeposition conditions were investigated by XRD and Mossbauer spectroscopy. The specific features of electrodeposition process into nanosize pores are also shown. © 2015 The Authors. Source


Osad'ko I.S.,Russian Academy of Sciences | Eremchev I.Yu.,Russian Academy of Sciences | Naumov A.V.,Moscow State Pedagogical University
Journal of Physical Chemistry C | Year: 2015

The temporal evolution of fluorescence intensity of a single blinking CdSe/ZnS nanocrystal (quantum dot, QD) has been measured with continuous wave (CW) laser excitation at room temperature. Tracks exhibit ON-/OFF-fluctuations with large amplitude and intensity fluctuations with small amplitude in the ON-interval. The QD photon distribution function was obtained by statistical analysis of this fluorescence track. The experimental QD photon distribution function was compared with an analogous function calculated with the Monte Carlo technique on the basis of two mechanisms for intermittency which take into account both ionization/neutralization processes in the QD core, as well as diffusive fluctuations of atoms on the core-shell interface. We show that a combined model based on these two mechanisms sufficiently describes the shape of the measured photon distribution function. © 2015 American Chemical Society. Source


Pipin V.V.,CAS National Astronomical Observatories | Pipin V.V.,Russian Academy of Sciences | Sokoloff D.D.,CAS National Astronomical Observatories | Sokoloff D.D.,Moscow State Pedagogical University | And 3 more authors.
Astrophysical Journal | Year: 2013

It is believed that magnetic helicity conservation is an important constraint on large-scale astrophysical dynamos. In this paper, we study a mean-field solar dynamo model that employs two different formulations of the magnetic helicity conservation. In the first approach, the evolution of the averaged small-scale magnetic helicity is largely determined by the local induction effects due to the large-scale magnetic field, turbulent motions, and the turbulent diffusive loss of helicity. In this case, the dynamo model shows that the typical strength of the large-scale magnetic field generated by the dynamo is much smaller than the equipartition value for the magnetic Reynolds number 106. This is the so-called catastrophic quenching (CQ) phenomenon. In the literature, this is considered to be typical for various kinds of solar dynamo models, including the distributed-type and the Babcock-Leighton-type dynamos. The problem can be resolved by the second formulation, which is derived from the integral conservation of the total magnetic helicity. In this case, the dynamo model shows that magnetic helicity propagates with the dynamo wave from the bottom of the convection zone to the surface. This prevents CQ because of the local balance between the large-scale and small-scale magnetic helicities. Thus, the solar dynamo can operate in a wide range of magnetic Reynolds numbers up to 106. © 2013. The American Astronomical Society. All rights reserved.. Source


Bu Y.,CAS Shanghai Institutes for Biological Sciences | Potapov M.B.,Moscow State Pedagogical University | Yin W.Y.,CAS Shanghai Institutes for Biological Sciences
ZooKeys | Year: 2014

Proturan collections from Magadan Oblast, Khabarovsk Krai, Primorsky Krai, and Sakhalin Oblast are reported here. Twenty-five species are found of which 13 species are new records for Russian Far East which enrich the knowledge of Protura known for this area. Three new species Baculentulus krabbensis sp. n., Fjellbergella lazovskiensis sp. n. and Yichunentulus alpatovi sp. n. are illustrated and described. The new materials of Imadateiella sharovi (Martynova, 1977) are studied and described in details. Two new combinations, Yichunentulus borealis (Nakamura, 2004), comb. n. and Fjellbergella jilinensis (Wu & Yin, 2007), comb. n. are proposed as a result of morphological examination. Keys to species of the genera Fjellbergella and Yichunentulus are given. An annotated list of all species of Protura from Russian Far East is provided and discussed. Widely distributed species were not recorded in this area. This may be because of the high sensitivity of Protura to anthropogenic impact and low dispersal ability of the group. © Yun Bu et al. Source


Borshchevski V.G.,Skryabin State Academy of Veterinary Science | Kostin A.B.,Moscow State Pedagogical University
Zoologicheskii Zhurnal | Year: 2014

Death of the black grouse, Lyrurus tetrix, was studied based on the remains of perished individuals recorded in western Russia during counts of 1981-2013. The mean annual death rate of black grouses older than 1.5-2.0 months was 2.0-2.5 bird/km2. The highest losses occurred in spring or in winter-spring periods; the minimal ones took place in summer. Predation was the main factor of death, while all other causes together (extreme weather, hunting, and unknown circumstances) are responsible only for 1/4 of the total losses. The main damage to the black grouse population in the northern areas was caused by raptors. Some differences between the numbers of perished cocks and hens were absent, but the seasonal dynamics of their death was not similar and factors also affected differently their losses. The losses of hens due to the activity of all the predators are distributed almost evenly by seasons, whereas the losses of cocks were higher in spring than in the other seasons. The dynamics of the male and female deaths caused only by raptors was similar: the maximum in spring, some decrease in summer, and the minimum, in autumn and winter. The seasonal death of birds of different sexes caused by the activity of mammalian predators was different: the death of cocks was higher in transitional seasons than in summer and winter; losses of hens were the highest in winter and minimal ones in spring-summer periods. Source


Tong C.-Y.E.,Harvard - Smithsonian Center for Astrophysics | Trifonov A.,Harvard - Smithsonian Center for Astrophysics | Shurakov A.,Moscow State Pedagogical University | Blundell R.,Harvard - Smithsonian Center for Astrophysics | Gol'tsman G.,National Research University Higher School of Economics
IEEE Transactions on Applied Superconductivity | Year: 2015

A new class of microwave-operated THz power detectors based on the NbN hot-electron-bolometer (HEB) mixer is proposed. The injected microwave signal (~1 GHz) serves the dual purpose of pumping the HEB element and enabling the read-out of the internal state of the device. A cryogenic amplifier amplifies the reflected microwave signal from the device and a homodyne scheme recovers the effects of the incident THz radiation. Two modes of operation have been identified, depending on the level of incident radiation. For weak signals, we use a chopper to chop the incident radiation against a black body reference and a lock-in amplifier to perform synchronous detection of the homodyne readout. The voltage measured is proportional to the incident power, and we estimate an optical noise equivalent power of ~5pW/√Hz at 0.83 THz. At higher signal levels, the homodyne circuit recovers the stream of steady relaxation oscillation pulses from the HEB device. The frequency of these pulses is in the MHz frequency range and bears a linear relationship with the incident THz radiation over an input power range of ~15 dB. A digital frequency counter is used to measure THz power. The applicable power range is between 1 nW and 1 μW. © 2014 IEEE. Source


Makarova O.L.,RAS Severtsov Institute of Ecology | Makarov K.V.,Moscow State Pedagogical University | Berman D.I.,Russian Academy of Sciences
Entomological Review | Year: 2014

The ground beetle fauna was studied in 12 biotopes of the tundra belt on Ola Plateau, 130 km NW of Magadan. In all, 16 species were found above timber line (900-1220 m), which is comparable with the diversity in the mountain tundras of the upper reaches of the Kolyma (Berman et al., 1984; Bukhkalo, 1997), but the faunistic similarity of these regions is low (Jaccard's coefficient 22-29%). Besides the widespread species, a group of ground beetles with limited ranges is present; it includes Carabus kolymensis Lafer, 1989 occurring in the East Siberian mountain tundras, the Siberian-Nearctic, mainly arctic Pterostichus agonus G. Horn, 1880, and the East Siberian Pterostichus eximius A. Mor., 1862. The use of the term "arctic species" in arealogical and ecological studies is discussed. © 2014 Pleiades Publishing, Inc. Source


Iafolla V.A.,National institute for astrophysics | Fiorenza E.,National institute for astrophysics | Lefevre C.,National institute for astrophysics | Lucchesi D.M.,National institute for astrophysics | And 9 more authors.
Advances in Space Research | Year: 2016

We present here the concept for a new experimental test of the Weak Equivalence Principle (WEP) carried out in the gravity field of the Sun. The WEP, stating the independence of the gravitational acceleration a body is subject to from its mass and composition, is at the basis of general relativity theory and more in general of metric theories of gravitation. It is therefore very important to test it to the precision allowable by current technology. The experiment here proposed aims at measuring the relative acceleration of two test masses in free fall, searching for a possible violation of the WEP, which would show up as a non-zero acceleration signal. The core of the experiment is constituted by a differential accelerometer with zero baseline, whose central elements are two test masses of different materials. This differential accelerometer is placed on a pendulum, in such a way as to make the common center of mass coincident with the center of mass of the pendulum itself. Ensuring a very precise centering, such a system should provide a high degree of attenuation of the local seismic noise, which - together with an integration time of the order of tens of days - would allow a test of the WEP with an accuracy improved by at least an order of magnitude with respect to the best measurements achieved so far. One of the strengths of this proposal is the know-how acquired from a previous study and technology development (GReAT: General Relativity Accuracy Test) that involved a test of the WEP in the gravity field of the Earth, in free fall inside a co-moving capsule released from a stratospheric balloon. The concept of the experiment is introduced, with particular attention to the differential accelerometer and its accommodation on the pendulum. A preliminary estimate of the attainable precision is given, along with a critical analysis of the associated challenges. © 2015 COSPAR. Published by Elsevier Ltd. All rights reserved. Source


Cheverikina E.A.,Institute of Pedagogic and Psychology of Professional Education of Russian Academy of Education | Leifa A.V.,Moscow State Pedagogical University | Kora N.A.,Amur State University | Badalyan J.V.,Amur State University | And 2 more authors.
American Journal of Pharmacology and Toxicology | Year: 2014

To identify character accentuation students who are prone to addiction will allow to adjust their socialization process during the training period in order to increase its effectiveness, as well as it will contribute to the creation of effective psycho-educational programs aimed at reducing the level of their addiction to drugs. Objective: To identify the influence of experimental character accentuation susceptibility to drug addiction among students. The study is based on concept of accented personalities by K. Leonhard and typology of accented personalities by A.E. Lichko. Psychological testing was as an empirical research method. Data processing was performed using the Statistical Package for Social Sciences (SPSS) v.17. It was found out that the students of higher education compared to students of secondary vocational education had susceptibility to drug addiction associated with less accentuation of character. This can be explained by the fact that those who are going to the universities to study are more socially adapted, they have a higher level of self-control and self-discipline, able by virtue of age and education to control outbursts of emotions and behavior. The findings of the study data will allow to adjust psycho-educational programs aimed at reducing the propensity to addiction among students based on character accentuation detected among students of higher and vocational education. © 2014 Science Publication. Source


Pomel'nikova A.S.,Moscow State Technical University | Shipko M.N.,Ivanovo State Power University | Stepovich M.A.,Moscow State Pedagogical University
Journal of Surface Investigation | Year: 2011

A mechanism of the transformation of crystal lattices of borides under liquid boronizing of steels has been investigated. It has been shown that nonstoichiometric borides with an FeB or Fe2B structure were the structure-formation element of phases in the hardened layer. The origin of the high rate of the formation of borides at the initial stage of chemical-thermal treatment at 800-1100°C has been elucidated. It has been established that the transformation of the Fe2B-FeB lattices was due to the enrichment of the FeB lattice by the boron vacancies. © 2011 Pleiades Publishing, Ltd. Source


Gnitetskaya T.N.,Far Eastern Federal University | Purysheva N.S.,Moscow State Pedagogical University | Ivanova E.B.,Far Eastern Federal University
Advanced Materials Research | Year: 2014

The present article shows the results of comparing the connectedness between the high school courses of Physics and Chemistry. The calculation of connectedness has been conducted within a graph model of inter-subject links developed by Gnitetskaya Tatyana N. The inter-subject space of the Physics and Chemistry courses is based on this model. The quantitative characteristics of this model are used to establish the hierarchy of physical terms used in Chemistry, and chemical terms used in Physics for all combinations of the Physics and Chemistry courses under review. Quantitative values of the connectedness between the courses of Physics and Chemistry have been calculated; they are used as foundation for selecting the courses of Physics and Chemistry based on the position of connectedness. © (2014) Trans Tech Publications, Switzerland. Source


Kotrc P.,Czech Republic Astronomical Institute | Barta M.,Czech Republic Astronomical Institute | Schwartz P.,Czech Republic Astronomical Institute | Schwartz P.,Slovak Academy of Sciences | And 4 more authors.
Solar Physics | Year: 2013

We present spectra and slit-jaw images of limb and on-disk eruptive events observed with a high temporal resolution by the Ondřejov Observatory optical spectrograph. Analysis of the time series of full width at half-maximum (FWHM) in Hα, Hβ, and radio and soft X-ray (SXR) fluxes indicates two phenomenologically distinct types of observations which differ significantly in the timing of FWHM and SXR/radio fluxes. We investigated one such unusual case of a limb eruptive event in more detail. Synthesis of all observed data supports the interpretation of the Hα broadening in the sense of regular macroscopic plasma motions, contrary to the traditional view (emission from warm dense plasma). The timing and observed characteristics indicate that we may have actually observed the initiation of a prominence eruption. We test this scenario via modeling of the initial phase of the flux rope eruption in a magnetohydrodynamic (MHD) simulation, calculating subsequently-under some simplifying assumptions-the modeled Hα emission and spectrum. The modeled and observed data correspond well. Nevertheless, the following question arises: To what extent is the resulting emission sensitive to the underlying model of plasma dynamics? To address this issue, we have computed a grid of kinematic models with various arbitrary plasma flow patterns and then calculated their resulting emission. Finally, we suggest a diagnostics based on the model and demonstrate that it can be used to estimate the Alfvén velocity and plasma beta in the prominence, which are otherwise hard to obtain. © 2012 Springer Science+Business Media Dordrecht. Source


Tolstenkov O.O.,RAS Severtsov Institute of Ecology | Prokofiev V.V.,Moscow State Pedagogical University | Terenina N.B.,RAS Severtsov Institute of Ecology | Gustafsson M.K.S.,Abo Akademi University
Parasitology Research | Year: 2011

The neuro-muscular system (NMS) of cercariae with different swimming patterns was studied with immunocytochemical methods and confocal scanning laser microscopy. Specimens of the continuously swimming Cercaria parvicaudata, Maritrema subdolum and Himasthla elongata were compared with specimens of the intermittently swimming Cryptocotyle lingua and the attached Podocotyle atomon. The patterns of F-actin in the musculature, 5-HT immunoreactive (-IR), FMRFamide-IR neuronal elements, α-tubulin-IR elements in the nervous and sensory systems and DAPI-stained nuclei were investigated. The general plan of the NMS was similar in all cercariae studied. No major structural differences in the patterns of muscle fibres were observed. However, in the tail of C. lingua, transverse muscle fibres connecting the bands of longitudinal muscles were found. No major structural differences in the 5-HT- or FMRFamide-IR nervous systems were observed. The number of 5-HT-IR neurones in the cercarial bodies varied between 12 and 14. The number and distribution of the α-tubulin-IR processes on the cercarial bodies and tails differed from each other. The relation between the number and structure of the α-tubulin-IR processes and the host finding strategy of the cercariae is discussed. A detailed schematic picture of the NMS in the tails of C. lingua and M. subdolum is presented. © 2010 Springer-Verlag. Source


Meschersky I.G.,RAS Severtsov Institute of Ecology | Chichkina A.N.,Moscow State Pedagogical University | Shpak O.V.,RAS Severtsov Institute of Ecology | Rozhnov V.V.,RAS Severtsov Institute of Ecology
Russian Journal of Genetics | Year: 2014

The results of molecular genetic analysis (full-length sequences of the mtDNA cytochrome b gene and control region and the allelic composition of 14 microsatellite loci) of 65 tissue samples from the endangered bowhead whale (Balaena mysticetus) population of the Sea of Okhotsk are presented. The data obtained enable the suggestion that at present, the state of the Sea of Okhotsk bowhead whale population is relatively stable. © 2014 Pleiades Publishing, Inc. Source


Murav'Eva O.V.,Moscow State Pedagogical University
Automation and Remote Control | Year: 2011

We consider problems with correction/perturbation of all parameters for the following objects and properties: systems of linear algebraic equations and feasibility properties, systems of linear algebraic inequalities and feasibility properties, a linear stationary control system and the superstability property, a function defined point by point and the linearity property, and two finite sets of points and the linear separability property. © 2011 Pleiades Publishing, Ltd. Source


Sundukov Y.N.,State Nature Reserve Kurilskiy | Makarov K.V.,Moscow State Pedagogical University
Far Eastern Entomologist | Year: 2015

One species of ground-beetles, Bembidion bulgani Jedlička, 1968, is firstly recorded from the Russian Far East. Source


Matalin A.V.,Moscow State Pedagogical University
Journal of Asia-Pacific Entomology | Year: 2015

A new tiger beetles species, Cylindera (Ifasina) ilonae sp. nov. is described from northern Vietnam (Tuyên Quang province: Na Hang district). This new species is readily distinguished from the closely related species Cylindera (Ifasina) lesnei Babault, 1923, C. (I.) decolorata (W. Horn, 1907) and C. (I.) psilica (Bates, 1866) by the larger size, shape and colour of the labrum and pronotum, elytral coloration and maculations, as well as size and shape of the aedeagus. The identification key to the species of subgenus Ifasina of Vietnam is given. © 2015 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Source


Zaitzev A.I.,Moscow State Pedagogical University
Russian Entomological Journal | Year: 2015

Two new species of fungus gnats—Acnemia sundukovi and Boletina sublagena spp.n. described from Kunashir Island (South Kuril Isles). New data on distribution of Acnemia kurilensis Zaitzev, 2001 given and illustrations of male terminalia provided. © RUSSIAN ENTOMOLOGICAL JOURNAL, 2015. Source


Efremov A.N.,Omsk State Pedagogical University | Filonenko A.V.,Moscow State Pedagogical University | Sviridenko B.F.,Surgut State University
Inland Water Biology | Year: 2015

The results of studies on the structure of reproductive organs of Stratiotes aloides L., the only existing species of genus Stratiotes L., are presented. Organographical analysis has been made; detailed morphological and anatomical descriptions of perianth, androecium, gynoecium, and fruit during different stages of morphogenesis have been reported; and correlation relationships in the morphogenesis of flower and inflorescence have been examined with a special focus on the issues of sexual dimorphism. In the structure of the reproductive organs, the main histological topographical complexes and their proportions, as well as their histochemical features, were identified. It was found that S. aloides androecium diversified in two alternative ways: the secretion of nectar (pistillate flower) and the production of fertile pollen (staminate flower) with the preservation of intermediate structural and functional forms. Gynoecium should be defined as the inferior hexamerous hemiparacarpous. The fruit of S. aloides is a hexamerous inferior hemiparacarpous follicle. © 2015, Pleiades Publishing, Ltd. Source


Sukhodol'skaya E.M.,Russian Academy of Sciences | Vasil'ev V.A.,Russian Academy of Sciences | Shibalev D.V.,Russian Academy of Sciences | Shcherbakova O.I.,Moscow State Pedagogical University | And 5 more authors.
Molecular Biology | Year: 2014

A study of VNTR polymorphism and molecular structure of 3′-UTR of the dopamine transporter gene (DAT1/SLC6A3) was performed in the Hadza and Datoga males. It was shown that Hadza and Datoga differed in allele and genotype frequencies. Allele with 9 repeats in 3′-UTR, as well as the DAT1 homozygous genotype 9/9, is more common in the Hadza. The allele with ten repeats, as well as the homozygous phenotype 10/10, is more common in the Datoga. Molecular structure of DAT1 alleles with 3, 8, and 12 repeats was determined for the first time. In addition, it was found that the DAT1 allele with 11 repeats in the Datoga significantly differed in the type and arrangement of repeats from those previously described in other populations. We suggest that variations in the repeats number and type in the 3′-UTR of allelic variants may affect the dopamine transporter gene function. © 2014 Pleiades Publishing, Inc. Source


Mamalyga M.L.,Moscow State Pedagogical University
Neurochemical Journal | Year: 2014

Changes in monoaminergic (MAergic) brain mechanisms, which are induced by ischemic stroke (IS), are associated with different seizure readiness (SR) at different periods after a stroke. An increase in SR was found 5 days after IS and, in some of the animals, at 35 days. In both cases, we observed a decrease in the activity of MAergic mechanisms. It seems that in the first case the changes are caused by decompensation and reflect disruption of compensatory mechanisms that are activated within a day after an IS. In the second case, the decrease in the MA-synthesizing capacities of the brain that we found 35 days after IS reflects a secondary post-insult complication, which includes a prolonged increase in SR that is maintained 60 days after an insult. Thus, the state of MAergic mechanisms of the brain during the post-insult period may not only limit but also promote the formation of SR. © 2014 Pleiades Publishing, Ltd. Source


Frick P.,RAS Institute of Continuous Media Mechanics | Sokoloff D.,Moscow State Pedagogical University | Stepanov R.,RAS Institute of Continuous Media Mechanics | Beck R.,Max Planck Institute for Radio Astronomy
Monthly Notices of the Royal Astronomical Society | Year: 2011

Rotation measure (RM) Synthesis was recently developed as a new tool for the interpretation of polarized emission data in order to separate the contributions of different sources lying on the same line of sight. Until now, the method was mainly applied to discrete sources in Faraday space (Faraday screens). Here we consider how to apply RM Synthesis to reconstruct the Faraday dispersion function, aiming at the further extraction of information concerning the magnetic fields of extended sources, for example galaxies. We pay attention mainly to two related novelties in the method, i.e. the symmetry argument in Faraday space and the wavelet technique. We give a relation between our method and the previous applications of RM Synthesis to point-like sources. We demonstrate that the traditional RM Synthesis for a point-like source indirectly implies a symmetry argument and, in this sense, can be considered as a particular case of the method presented here. Investigating the applications of RM Synthesis to polarization details associated with small-scale magnetic fields, we isolate an option which was not covered by the ideas of the Burn theory, i.e. using quantities averaged over small-scale fluctuations of the magnetic field and electron density. We describe the contribution of small-scale fields in terms of Faraday dispersion and beam depolarization. We consider the complex polarization for RM Synthesis without any averaging over small-scale fluctuations of the magnetic field and electron density and demonstrate that it allows us to isolate the contribution from a small-scale field. A general conclusion concerning the applicability of RM Synthesis to the interpretation of the radio polarization data for extended sources, such as galaxies, is that quite severe requirements (in particular to the wavelength range covered by observations) are needed to recognize at least the principal structure of the Faraday dispersion function. If the wavelength range of observations is not adequate, we describe which features of this function can be reconstructed. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS. Source


Nifant'Ev I.E.,RAS Topchiev Institute of Petrochemical Synthesis | Sevostyanova N.T.,Tula State Pedagogical University | Averyanov V.A.,Tula State Pedagogical University | Batashev S.A.,Tula State Pedagogical University | And 4 more authors.
Applied Catalysis A: General | Year: 2012

The reactants and components of a catalytic system were studied for their effects on the rate of Pd-catalysed cyclohexene hydrocarbomethoxylation. First-order reaction rate dependences were established for cyclohexene and Pd(OAc)2, while non-monotonic rate dependences were determined for the diphosphine and p-toluenesulphonic acid concentrations and the SO pressure. The reaction was shown to follow first-order kinetics when the methanol concentration was below 0.4 mol/L; however, the reaction rate slowed upon a further increase in the methanol concentration. The obtained results were interpreted by considering a hydride mechanism supplemented with ligand exchange reactions, which decreased the activity of the catalyst, and with hydride complex annihilations by p-toluenesulphonic acid, resulting in complete loss of catalytic activity. Treatment of the proposed mechanism using the quasi-equilibrium concentration method gave a kinetic equation for the reaction that was consistent with the experimental data. © 2012 Elsevier B.V. Source


Novikov A.S.,University of Lisbon | Novikov A.S.,Moscow State Pedagogical University | Kuznetsov M.L.,University of Lisbon | Kuznetsov M.L.,Saint Petersburg State University | And 3 more authors.
ACS Catalysis | Year: 2013

The mechanism of the rate-limiting stage of alkanes oxidation with hydrogen peroxide, that is, formation of the hydroxyl radicals, catalyzed by aqua complexes, [M(H2O)n]3+ (1), of the group III metals exhibiting a unique stable non-zero oxidation state (M = Ga, In, Sc, Y, or La) was theoretically studied in detail at the DFT level. The mechanism involves the substitution of a H2O ligand for H2O 2, protolysis of the coordinated H2O2, substitution of another H2O ligand for H2O2, generation of the hydroxyl radical upon the homolytic O-O bond cleavage in the key complex [M(H2O)(n-2)(H2O 2)(OOH)]2+, and closure of the catalytic cycle. The substitution steps proceed via the dissociative mechanism D (M = Ga and Y) or the associative mechanisms A [M = Sc, La, or In (second substitution)] or I a [M = In (first substitution)]. The general catalytic activity of 1 is determined by three main factors, that is, (i) lability of the complexes, (ii) acidity of the metal-bound ligands, and (iii) the H2O 2 activation toward the homolytic O-O bond cleavage. The H 2O2 activation, in turn, depends on the strength of the M-O2H2 bond, delocalization of the spin density within a coligand (OOH-), and ability of the coligand to be easily oxidized. The calculations predict that the catalytic activity of 1 increases along the row of the metals Al ≈ La < Y ≈ In < Sc < Ga. © 2013 American Chemical Society. Source


Potapov M.,Moscow State Pedagogical University | Gao Y.,CAS Shanghai Institutes for Biological Sciences | Deharveng L.,French Natural History Museum
ZooKeys | Year: 2013

In this paper, we describe the new genus Pauropygus gen. n. which includes three minute species, blind and unpigmented, living in interstitial littoral habitats in tropical or subtropical countries. Two of these species are new to science (type species P. projectus sp. n. from New Caledonia and P. pacifcus sp. n. from China); the third one, originally described in the genus Cryptopygus (C. caussaneli Tibaud, 1996), has a larger pantropical distribution. We synonymize here Cryptopygus riebi Barra, 1997 from South Africa with Pauropygus caussaneli. Tw o paratypes of the Mexican species Cryptopygus axayacatl Palacios & Tibaud, 2001 turned also to be P. caussaneli, while the holotype and remaining paratypes of this species support its placement in Proisotomodes. Among the Cryptopygus complex, Pauropygus gen. n. is easily recognized by characters of mouthparts (presence of two large projections on pleural fold, basolateral feld with 6 chaetae, modifed mouthparts) and reduced sensillar chaetotaxy (tergal sensilla 2-3,0-1/0-1,0-1,1-2,1-2,1-3, microsensilla reduced in number: 00/0-100, with sensilla situated in p-row on the abdomen). Small size, absence of eyes and pigment are also shared by all its species. The three species belonging to the genus difer by sensillar chaetotaxy. © Mikhail Potapov et al. Source


Petrova E.B.,Moscow State Pedagogical University | Sabirova F.M.,Kazan Federal University
International Journal of Environmental and Science Education | Year: 2016

The article substantiates the necessity of studying the peculiarities of color vision of human in the course "Biophysics" that have been integrated into many types of higher education institutions. It describes the experience of teaching this discipline in a pedagogical higher education institution. The article presents a brief review of the most compelling existing color vision hypotheses, according to the authors mind: G. Allen, P. Lucas and N. Domini, which are mainly associated with the appearance of color perception with dietary habits of human ancestors, and a fundamentally different assumptions of M. Changizi, whereby the color perception was necessary for a human for a good communication with their own kind for the evaluation of skin tones. In this article is observed the system of the educational experiment research of the functioning of the color perception system of the human eye, as a natural addition to the proposed hypotheses. An experimental study model of a fragment of the retina is proposed, and a laboratory work on the study of a system of a colour human perception, the study of a photobiological paradox of vision by the example of a study model of the opaque lens (cataract). The subject results of its use in a pedagogical university are debated. All this allows us to focus on a caring attitude for human biotic sensory systems in aggressive abiotic influences. It is especially important in teachers training, aimed at training and raising a healthy younger generation. The authors also consider it necessary to acquaint future teachers with the authors of the various theories of color vision and the curricula vitae of the authors of the various discoveries, because this allows enhancing an interest in the study course. © 2016 Imer et al. Source


Meschersky I.G.,RAS Severtsov Institute of Ecology | Abramov A.V.,Russian Academy of Sciences | Lebedev V.S.,Moscow State University | Chichkina A.N.,Moscow State Pedagogical University | Rozhnov V.V.,RAS A.N. Severtsov Institute of Ecology and Evolution
Biochemical Systematics and Ecology | Year: 2016

The paper presents the first phylogeography of the Indomalayan pencil-tailed tree mouse, Chiropodomys gliroides, an arboreal rodent widely distributed in SE Asia. Fifty four specimens of C. gliroides, sampled throughout eastern Indochina (Vietnam and Laos), have been sequenced for the mitochondrial (cytb and control region) and nuclear (IRBP) genes. The results have revealed the existence of two highly divergent allopatric lineages showing a genetic divergence of 12% cytb and occurring in different regions of Vietnam. The northern lineage occurs in northern and central Vietnam, central Laos and the highlands of southern Vietnam, and the southern lineage occurs in lowlands of southern Vietnam. In the south, representatives of both lineages were collected at the distance of less than 130 km from each other. The occurrence of both genetic lineages in southern Vietnam seems to testify for an important role of Dalat Plateau as a possible refuge for small mammals. Yet, our results do not support the assignment of Chiropodomys neither to the Micromys division of Murinae, nor to a close phylogenetic link between Chiropodomys and Hapalomys. © 2016 Elsevier Ltd. Source


Shchegolikhina O.I.,RAS Nesmeyanov Institute of Organoelement Compounds | Matukhina E.V.,Moscow State Pedagogical University | Anisimov A.A.,RAS Nesmeyanov Institute of Organoelement Compounds | Molodtsova Y.A.,RAS Nesmeyanov Institute of Organoelement Compounds | And 3 more authors.
Macroheterocycles | Year: 2016

The samples of tris-cis-tris-trans-dodecaphenylcyclododecasiloxanedodecaol (dodecaol) with different crystalline structure have been investigated by means of TGA and X-ray methods. The samples obtained have exhibited mesomor phic properties, the thermal behavior and the type of mesomorphic ordering being directly associated with the type of the main H-bonded unit forming the initial crystalline structure. In turn, the type of an ordering in the mesophase has determined the structure of the final products of polycondensation. It was shown that the multifunctional tris-cis-tristrans- dodecaphenylcyclododecasiloxanedodecaol can be used as possible monomer precursor for the covalent-bonded “double-chain sheet polymer”. © ISUCT Publishing. Source


Margesin R.,University of Innsbruck | Zhang D.-C.,CAS Qingdao Institute of Oceanology | Frasson D.,ZHAW Zurich University of Applied Sciences | Brouchkov A.,Moscow State Pedagogical University
International Journal of Systematic and Evolutionary Microbiology | Year: 2016

The bacterial strain N1-38T was isolated from ancient Siberian permafrost sediment. The strain was Gram-reaction-negative, motile by gliding, rod-shaped and psychrophilic, and showed good growth over a temperature range of –5 to 25 °C. Phylogenetic analysis of 16S rRNA gene sequences revealed that strain N1-38T was most closely related to members of the genus Glaciimonas and shared the highest 16S rRNA gene sequence similarities with the type strains of Glaciimonas alpina (99.3 %), Glaciimonas immobilis (98.9 %) and Glaciimonas singularis (96.5 %). The predominant cellular fatty acids of strain N1-38T were summed feature 3 (C16: 1ω7c and/or iso-C15: 0 2-OH), C16: 0 and C18: 1ω7c. The major respiratory quinone was ubiquinone 8 and the major polar lipids were phosphatidylethanolamine and diphosphatidylglycerol. The genomic DNA G + C content was 53.0 mol%. Combined data of phenotypic, phylogenetic and DNA-DNA relatedness studies demonstrated that strain N1-38T represents a novel species of the genus Glaciimonas, for which the name Glaciimonas frigoris sp. nov. is proposed. The type strain is N1-38T (=LMG 28868T=CCOS 838T). An emended description of the genus Glaciimonas is also provided. © 2015 IUMS Printed in Great Britain. Source


Devyatov I.A.,Moscow State University | Romashka M.Yu.,Moscow State University | Semenov A.V.,Moscow State Pedagogical University | Krutitskii P.A.,RAS Keldysh Institute of Applied Mathematics | Kupriyanov M.Yu.,Moscow State University
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

Investigations of the electronic thermal properties of the interfaces between a normal metal and high-temperature superconductors are important for correct design of modern low-temperature electronic refrigerators and bolometers. Multiband superconductivity, recently discovered in ferropnictides and in magnesium diboride, is the suitable choice due to isotropic order parameter in it, in contrast with strongly anisotropic d-wave superconductivity in high-Tc cuprates, which is destructive for electronic refrigeration and bolometric applications. Moreover, recent calculations of Andreev spectra and subgup bound states in ferropnictides, taking into account coherent multiband interference effects in s± signreversal order parameter model, predict possible suppression of Andreev reflection for clean boundaries between ferropnictides and a normal metal. This Andreev reflection suppression can improve electronic refrigerator quality. Up to now there was no calculation of electronic thermal properties of the interfaces between a normal metal and novel multiband superconductors. In this paper we calculate the thermal flux and electronic thermal conductivity of the boundary between normal metal and novel multiband superconductors. In this calculations both s++ and s ± sign-reversal order parameter models for multiband superconductor is used, taking into account coherent multiband interference effect. © 2010 Copyright SPIE - The International Society for Optical Engineering. Source


Greenslade P.,Environmental Management and Engineering School | Greenslade P.,Australian National University | Greenslade P.,South Australian Museum | Potapov M.,Moscow State Pedagogical University
European Journal of Entomology | Year: 2015

A new species of Isotomidae (Collembola) was collected from submerged stones on the edge of nine lakes on Tasmania's Central Highland Plateau. Because it did not comply fully with the characters of any existing genus, a new genus, Chionobora gen. n. is erected for it here. An Antarctic species, Desoria klovstadi (Carpenter), has characters which conform with the new genus so is formally transferred to the new genus here. The Antarctic Continent and Tasmania were last in proximity 60 million years b.p. so it is suggested both species are relicts persisting in probable ice-free refugia during glacial cycles. Gut contents of specimens of the new species exclusively contained diatoms in various stages of digestion and the species appears to graze on aquatic macrophytes, a feeding habit not recorded before for Collembola. We note the high numbers of endemic invertebrate taxa of restricted distributions in cold habitats of southern regions compared to warmer regions and stress their conservation values and threats to their populations. Source


Matalin A.V.,Moscow State Pedagogical University
Journal of Asia-Pacific Entomology | Year: 2015

From recent field and museum collections, new localities and range extensions of 47 taxa (28 species and 19 subspecies) of tiger beetles within various provinces of Thailand are reported. Therates rugulosus W. Horn, 1900 is reliably recorded for the first time in Thailand. The list of the tiger beetles of Thailand now has 146 taxa, including 35 endemics (28 species, 7 subspecies) and 27 near-endemics (24 species, 3 subspecies). The endemics represent 24% of the total species diversity, but together with near-endemics, it rises to 42.5%. Northern Thailand has the highest species diversity and the greatest endemism of tiger beetles in the country. © 2015 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Source


Khalatov V.Y.,Moscow State University | Abdul'myanov S.N.,Moscow State Pedagogical University
Geography and Natural Resources | Year: 2013

Geographical places of interest of mountain territories are discussed. A comprehensive definition of the notion of "geotope" is provided, which takes into consideration its uniqueness, individuality and accessibility for study and popularization. A relevant classification of geotopes and approaches in studying them have been developed. Attention is drawn to the possibilities of protecting mountain geotopes, and to the need fro a popularization of geotopes in the geographical knowledge system. A case in point is provided by the record cards and the catalogue of geotopes as well as by websites with information bases of data on geographical attractions of mountain territories. © 2013 Pleiades Publishing, Ltd. Source


Shilin I.A.,Moscow Aviation Institute | Nizhnikov A.I.,Moscow State Pedagogical University
Acta Polytechnica | Year: 2011

Using the Poisson transform, which maps any homogeneous and infinitely differentiable function on a cone into a corresponding function on a hyperboloid, we derive some integral representations of the Legendre functions. Source


Orlov S.V.,Russian Academy of Sciences | Naumov A.V.,Moscow State Pedagogical University
Bulletin of the Russian Academy of Sciences: Physics | Year: 2014

Blinking (stochastic intermittence) of fluorescence is a quite common phenomenon that accompanies the emission of single quantum objects-organic chromophore molecules, quantum dots, and nanocrystals. It is demonstrated that fluorescence blinking of single organic molecules embedded into a polymer matrix including the occurrence of "grey" states is due to tunneling transitions in the two-level systems (TLSs) of the matrix. The repeated registration of fluorescence excitation spectra of single molecules (SMs) is used for our analysis. The statistics of fluorescence blinking of an SM is directly related to conformational changes (tunneling transitions in TLSs) in its immediate vicinity. Individual parameters of the corresponding elementary excitation are also determined. © 2014 Allerton Press, Inc. Source


Mogi T.,Hokkaido University | Abdallah S.,Hokkaido University | Fomenko E.,Moscow State Pedagogical University
Near Surface Geoscience 2014 - 20th European Meeting of Environmental and Engineering Geophysics | Year: 2014

The GREATEM (GRounded Electrical source Airborne Transient ElectroMagnetics) survey uses a grounded electrical dipole source of 2∼3 km length as a transmitter and a three-component magneto-meter in the bird towed from a helicopter as a detector. The GREATEM system is considered to be an airborne version of the Long Offset Transient ElectroMagnetics (LOTEM) system (Strack, 1992). We developed a numerical forward modelling scheme using a staggered-grid finite-difference method (SFD, Fomenko and Mogi, 2002) adding a finite-length electrical dipole source routine. To construct a three dimensional (3D) resistivity model for GREATEM data, we have to overcome to compute a model composed of huge number of grid at wide frequency ranges because GREATEM has obtained resistivity data in time domain at a large number of sites. In order to verify the validity of the code, we compare the results with those obtained by the 2D numerical code of the LOTEM case developed by Mitsuhata (2000) for a 2D quarter space model and a trapezoidal hill model. Finally, we simulate GREATEM responses for 3D modeling with a conductor placed at coastland boundary and a topography model. Source


Lobanov Y.V.,Harvard - Smithsonian Center for Astrophysics | Tong C.E.,Harvard - Smithsonian Center for Astrophysics | Hedden A.S.,Harvard - Smithsonian Center for Astrophysics | Blundell R.,Harvard - Smithsonian Center for Astrophysics | Gol'tsman G.N.,Moscow State Pedagogical University
21st International Symposium on Space Terahertz Technology 2010, ISSTT 2010 | Year: 2010

Abstract- We describe a novel method of operation of the HEB direct detector for use with a Fourier Transform Spectrometer. Instead of elevating the bath temperature, we have measured the RF response of waveguide HEB mixers by applying microwave radiation to select appropriate bias conditions. In our experiment, a microwave signal is injected into the HEB mixer via its IF port. By choosing an appropriate injection level, the device can be operated close to the desired operating point. Furthermore, we have shown that both thermal biasing and microwave injection can reproduce the same spectral response of the HEB mixer. However, with the use of microwave injection, there is no need to wait for the mixer to reach thermal equilibrium, so characterisation can be done in less time. Also, the liquid helium consumption for our wet cryostat is also reduced. We have demonstrated that the signalto- noise ratio of the FTS measurements can be improved with microwave injection. Source


Nifant'Ev I.E.,RAS Topchiev Institute of Petrochemical Synthesis | Batashev S.A.,Tula State Pedagogical University | Toloraya S.A.,Moscow State Pedagogical University | Tavtorkin A.N.,RAS Topchiev Institute of Petrochemical Synthesis | And 4 more authors.
Journal of Molecular Catalysis A: Chemical | Year: 2011

Cyclohexene hydrocarbomethoxylation catalyzed by the Pd(OAc)2 - p-toluenesulfonic acid - diphosphine systems with broad variation of diphosphine structure and concentration was studied. It was shown that the hydrocarbon part of the structure and the mutual arrangement of the phosphine groups are the factors that control the activity of palladium-containing catalysts. By comparison of the promoting effects of mono and diphosphine ligands, it is demonstrated that bridging trans-diphosphines show higher efficiency with regard to both the kinetic (TOF) and concentration factors (low P/Pd ratios). In particular, their promoting activity is an order of magnitude higher than that for triphenylphosphine at lower P/Pd ratios (8-65 times). The results were interpreted from the standpoint of chelation effect and the geometric matching of the diphosphine structure to the arrangement of vacant s,d-orbitals of the Pd centre. © 2011 Elsevier B.V. Source


Moriya T.J.,University of Tokyo | Tominaga N.,Konan University | Blinnikov S.I.,Institute of Theoretical and Experimental Physics | Baklanov P.V.,Institute of Theoretical and Experimental Physics | Sorokina E.I.,Moscow State Pedagogical University
Proceedings of the International Astronomical Union | Year: 2011

Red supergiants (RSGs) are progenitors of Type IIP supernovae (SNe). It is suggested that RSGs can experience a mass loss with a very high mass-loss rate (even as high as 0.01 M · yr -1) due to, e.g., dynamical instabilities of their envelopes (e.g., Yoon & Cantiello (2010)). Because of the extensive mass loss, RSGs can have very dense circumstellar medium (CSM) around them. If a SN explosion occurs soon after the extensive mass loss of a RSG, the SN ejecta will collide with the dense CSM. Due to the collision, the kinetic energy of the ejecta is converted to radiation energy and such SNe with collision can be brighter than usual Type IIP SNe. By performing one-dimensional multi-group radiation hydrodynamical calculations, we investigate the effects of the collision on Type IIP SN LCs. We show that if RSGs explode within a dense CSM, the SN will be very bright, especially in ultraviolet, at early epochs. We also compare our models with the ultraviolet-bright Type IIP SN 2009kf and show that the progenitor of SN 2009kf can be a massive RSG which experienced extensive mass loss just before its explosion. We conclude that this is evidence that massive RSGs experience extensive mass loss and the existence of such mass loss can actually be the cause of the contradiction between theoretical and observational mass ranges of Type IIP SN progenitors. © 2012 International Astronomical Union. Source


Pankratova E.V.,RAS Engelhardt Institute of Molecular Biology | Stepchenko A.G.,RAS Engelhardt Institute of Molecular Biology | Krylova I.D.,Moscow State Pedagogical University | Portseva T.N.,RAS Engelhardt Institute of Molecular Biology | Georgieva S.G.,RAS Engelhardt Institute of Molecular Biology
Doklady Biochemistry and Biophysics | Year: 2016

We studied the role of transcription factor Oct-1 in the regulation of expression of genes of the JAK–STAT signaling pathway in the Namalwa Burkitt’s lymphoma cell line. Overexpression of Oct-1 isoforms (Oct-1A, Oct-1L, and Oct-1X) causes a decrease in the activity of four genes involved in the JAK–STAT signaling pathway—IFNAR2, STAT1, STAT2, and STAT4. As a result of our research, it was found that genes STAT2 and STAT4 are direct targets for Oct-1 protein. © 2016, Pleiades Publishing, Ltd. Source


Potapov M.,Moscow State Pedagogical University | Gulgenova A.,Buryat State University
Zootaxa | Year: 2013

Nine new species of the genus Folsomia are described from Buryatia (Russia, East Siberia): F. biparis sp. nov., F. fumosa sp. nov., F. heterothorax sp. nov., F. maximovi sp. nov., F. pseudovtorovi sp. nov., F. sensivillosa sp. nov., F. uniparis sp. nov., F. uniramia sp. nov., and F. vitimica sp. nov. A complete list and a key to species recorded in the Buryatia are given, and their morphology, distribution, and ecology are annotated. The taxonomical groups of species are discussed. Copyright © 2013 Magnolia Press. Source


Tomaszewska W.,Polish Academy of Sciences | Zaitsev A.A.,Moscow State Pedagogical University
Mitteilungen aus dem Museum fur Naturkunde in Berlin - Deutsche Entomologische Zeitschrift | Year: 2012

The larva of Ectomychus basalis Gorham is described and illustrated. Larval morphology including thoracic endoskeleton (studied for the first time in the family) and phylogenetic relationships of Stenotarsinae are discussed and compared with Lycoperdininae and Endomychinae. A key to genera of Stenotarsinae based on the known larvae is provided. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Vanyavina L.V.,Moscow State Pedagogical University
Zoologicheskii Zhurnal | Year: 2012

The phenology and size structure of populations of three species of Dicyrtomidae (D. minuta, D. fusca P. setosa) were studied by the pitfall trap method in a forbs meadow of Moscow region in 2009-2011. Temperature and humidity in 2009 were usual, the spring and summer of 2010 were abnormally hot and dry. The life cycles of three species of Dicyrtomidae were shown to be similar. These species hibernate at the stage of egg. Hatching occurs from May to the end of summer. In autumn, populations consist only of adult individuals. In Moscow region, populations of surface-dwelling Dicyrtomidae may be restored quickly after summer drought. Source


Huang C.-W.,CAS Shanghai Institutes for Biological Sciences | Potapov M.,Moscow State Pedagogical University
Zootaxa | Year: 2012

Four new species of the genera Scutisotoma Bagnall and Weberacantha Christiansen are described from Asia; S. bengei sp.nov. (SW China), S. robustodens sp.nov. (East Siberia), S. trichaetosa sp.nov. (E China), and W. cylindrica sp. nov. (Far East of Russia). Scutisotoma christiansensi (Stach, 1959) is figured from type material. The chaetotaxy of femur of first pair of legs is given a consistent nomenclature, its variability based on a survey of 31 species of two genera is studied. The genus Scutisotoma is divided into three species groups (christianseni, schisti, and subarctica). Copyright © 2012 Magnolia Press. Source


Vasil'eva E.D.,Moscow State Pedagogical University | Vasil'ev V.P.,RAS Severtsov Institute of Ecology
Journal of Ichthyology | Year: 2012

We describe spined loaches from the Kyzylagach Bay (Azerbaijan) and from brackish waters of the northeastern Caspian Sea found in museum collections as a separate new species, the Khvalyn loach Cobitis amphilekta. The new species differs from other species of the Caspian basin in the following combination of characteristics: one very narrow, weakly discernible spot in the upper part of the base of the caudal fin; Canestrini's organ in males with a wide and short plate, usually not reaching the end of the third segment of the attached ray; third Gambetta's zone of pigmentation usually not reaching the base of the anal fin, often not reaching the end of the pectoral fin; scales of oval shape, with a relatively large central part, weakly shifted towards the anterior margin; pronounced ridges on the margins of the caudal penduncle; and short barbels. © 2012 Pleiades Publishing, Ltd. Source


Bu Y.,CAS Shanghai Institutes for Biological Sciences | Gao Y.,CAS Shanghai Institutes for Biological Sciences | Potapov M.B.,Moscow State Pedagogical University | Luan Y.-X.,CAS Shanghai Institutes for Biological Sciences
ZooKeys | Year: 2012

Littoral dipluran Parajapyx pauliani Page ́s, 1959 was redescribed based on the specimens collected in Hainan Island, South China. The littoral habitat was confirmed for the species, as the first report of arenicolous dipluran in China. DNA barcoding fragment was sequenced for five Parajapyx species (18 individuals) from China, and this is the first report on DNA barcodes used for dipluran identification. The mean intra- and interspecific divergences are 1.9% and 19.1% respectively. Synonymy of P. paucidentis and P. isabellae was confirmed. © Yun Bu et al. Source


Moss D.,University of Manchester | Sokoloff D.,Moscow State Pedagogical University | Lanza A.F.,National institute for astrophysics
Astronomy and Astrophysics | Year: 2011

Aims. Stellar activity data provide evidence of activity wave branches propagating polewards rather than equatorwards (the solar case). This evidence is especially pronounced for the well-observed subgiant HR 1099. Stellar dynamo theory allows polewards propagating dynamo waves for certain governing parameters. In this paper, we try to unite observations and theory. Methods. Taking into account the preliminary stage both of observations of polar activity branches and of the determination of the governing parameters for stellar dynamos, we restrict our investigation to the simplest mean-field dynamo models, while recognizing more modern approaches to be an essential development. Results. We suggest a crude preliminary systematization of the reported cases of polar activity branches. Then we present results of dynamo model simulations which contain magnetic structures with polar dynamo waves, and identify the models which look most promising for explaining the latitudinal distribution of spots in dwarf stars. Those models require specific features of stellar rotation laws, and so observations of polar activity branches may constrain internal stellar rotation. Specifically, we find it unlikely that a pronounced poleward branch can be associated with a solar-like internal rotation profile, while it can be more readily reproduced in the case of a cylindrical rotation law appropriate for fast rotators. We stress the case of the subgiant component of the active close binary HR 1099 which, being best investigated, presents the most severe problems for a dynamo interpretation. Our best model requires dynamo action in two layers separated in radius. This interpretation requires some change in the paradigm of stellar magnetic studies, as it explains surface manifestations in a subgiant as a joint effect of shallow and deep layers of the stellar convective zone, rather than of a surface magnetic field only, as appears to be the case in dwarf stars. Conclusions. Observations of polar activity branches provide valuable information for understanding stellar activity mechanisms and internal rotation, and thus deserve intensive observational and theoretical investigation. Current stellar dynamo theory seems sufficiently robust to accommodate the phenomenology. © 2011 ESO. Source


Cherstiouk O.V.,RAS Boreskov Institute of Catalysis | Simonov A.N.,RAS Boreskov Institute of Catalysis | Tsirlina G.A.,Moscow State Pedagogical University
Electrocatalysis | Year: 2012

Metatungstate isopolyanion adsorption on smooth polycrystalline Pt and carbon-supported dispersed platinum in sulfuric acid medium is studied by cyclic voltammetry. Manifestations of both reversible and irreversible adsorption are found, with the features typical for heteropolytungstates of the same Keggin structure. When (NH4)6H2W12O40 is added to sulfuric acid solution, H underpotential deposition (UPD) charge starts to redistribute: it decreases at high hydrogen coverage but increases at higher potentials, with appearance of additional reversible redox feature in "double layer region." The total charge value in diluted metatungstate solutions remains the same as for pure Pt. However, this value decreases with metatungstate concentration. At any fixed (NH4)6H2W12O40 concentration, the total charges in the hydrogen region are practically the same in 0. 1 and 0. 5 M sulfuric acid. Strongly bonded metatungstate species can be kept at the surface after the transfer to supporting solution. These irreversibly adsorbed species are redox-inactive and demonstrate stronger suppression of H UPD. Excursion to oxygen adsorption region does not result in complete desorption, but redistribution of charge takes place again. Our observations can be assigned (by analogy with Keggin anions adsorption on Au and Ag) to slow adsorbate-metal bonding, with subsequent increase of the number of bonded oxygen atoms. General trends are qualitatively the same for both Pt materials, but dispersed Pt on glassy carbon favors irreversible adsorption. The data confirm that adsorbed metatungstate can undergo reversible reduction at potentials more positive than the equilibrium potential of its first W(V/VI) redox transition (molecular UPD). Comparative electrocatalytic tests are presented for nitrate electroreduction on bare Pt, Pt modified with irreversibly adsorbed metatungstate, and Pt in metatungstate solution. The latter system, containing both forms of tungstate adsorbate, demonstrates high steady-state electrocatalytic activity at potentials below ca. 0. 1 V reversible hydrogen electrode (RHE). © 2012 Springer Science+Business Media New York. Source


Bu Y.,CAS Shanghai Institutes for Biological Sciences | Potapov M.B.,Moscow State Pedagogical University | Gao Y.,CAS Shanghai Institutes for Biological Sciences
Florida Entomologist | Year: 2012

Two new species Willemia antennomonstrum sp. nov. collected in Hainan and W. dhaesei sp. nov. collected in Shandong from sand beaches of the Pacific coast of China are described. Both species belong to the buddenbrocki group. Willemia antennomonstrum sp. nov. shows convergence to family Onychiuridae, because it has a remarkable expanded granulated guard sensilla in sensory organ of antennal segment III. Willemia dhaesei sp. nov. differs principally from other members of the group by presenting a m-row of setae on abdominal segment IV. Willemia koreana Thibaud & Lee, 1994 (anophthalma group) is recorded in China for the first time; having been found at Zhejiang. Source


Potapov M.,Moscow State Pedagogical University | Yan G.,CAS Shanghai Institutes for Biological Sciences
Annales de la Societe Entomologique de France | Year: 2012

An annotated list of the species of Folsomia fimetaria group recorded in China is given. The new diagnostics of Folsomia candida sensu lato and sensu stricto are proposed basing on European and Asiatic material. Folsomia postsensilis n. sp. is described from Ningxia and Qinghai Provinces. It is characterized by the combination of posterior position of medial sensilla on abdomen, presence of ocelli and short furca. Source


Goranskij V.P.,Moscow State Pedagogical University | Bersukova E.,Russian Academy of Sciences
Proceedings of the International Astronomical Union | Year: 2010

CCD photometry reveals a hot spot on the surface of the hot accretion gainer in this supergiant O type binary with a big accretion rate. This spot is as bright as 25000 Suns. The orbital period of this system is 33.108 days. The absorption-line spectrum contains multiple lines of He I, Si III and N II. The star is associated with H II region formed by bipolar gas outflow from the system. © International Astronomical Union 2011. Source


Vanyavina L.Y.,Moscow State Pedagogical University
Zoologicheskii Zhurnal | Year: 2012

The information is provided on the species composition, structure, and seasonal changes in the dynamic density of surface-active Collembola communities in meadows and forests of Moscow region. A total of 27 epigeic springtail species (18-24 in each biotope) were recorded from May to October in four biotopes using pitfall traps. All of the investigated communities consist of 1-2 dominant species, several subdominants and 11-19 rare species; Entomobryomorpha h Symphypleona predominated. The communities of springtails in the forest and meadow biotopes investigated had the similar species composition, but a relative abundance of species was different. The total dynamic density of epigeic species populations is shown to vary during the season and depends on the type of biotope and time of registration. The maximum density was recorded at the beginning of the season (May-June); the minimum density was observed in August. Source


Sixty years ago, in 1952, Prof. E V Shpol'skii and his colleagues were the first to see quasilinear spectra from complex organic compounds in specially selected solvents at low temperatures. Twenty years later, in 1972, a team headed by Prof. RI Personov discovered laser fluorescence line narrowing in the solid solutions of organic dyes. These two discoveries served as the basis for the field of laser selective spectroscopy of impurity centers in solids. The work in this field culminated in the techniques of spectroscopy and luminescence imaging (microscopy) of single molecules in condensed matter. Today, optical spectroscopy of impurity centers in solid solutions has become one of the most popular tools for solving a wide variety of interdisciplinary problems in physics, physical chemistry, optics and spectroscopy, biophysics, quantum optics, and nano-technology. In this article, the development of this field is briefly reviewed, potentials of the developed methods are discussed, and some research results are highlighted. © 2013 Uspekhi Fizicheskikh Nauk, Russian Academy of Sciences. Source


Bayandina O.S.,Moscow State Pedagogical University | Val'tts I.E.,RAS Lebedev Physical Institute | Kurtz S.E.,National Autonomous University of Mexico
Astronomy Reports | Year: 2015

Themaser pumping schemes proposed for the various OH lines may not be as clear-cut as they once seemed. The main OH lines, at 1665 and 1667 MHz, are thought to be radiatively pumped, with the radiation typically coming from nearby ultracompact HII regions. Recently, a new class of main-line maser has been posited, collisionally pumped by shocks due to molecular outflows. The W3(OH)/W3(OH)-TW system is the archetype: traditional OH masers are excited by theW3(OH) ultracompact HII region, while collisionally pumped OH masers arise in the younger object W3(OH)-TW, which is driving an outflow. The 1720 MHz OH satellite line maser, typically found in SNR–cloud interaction regions, is thought to be collisionally pumped, as are class I methanol masers found in star formation regions. Thus it is plausible that these two masers arise in similar (shocked gas) circumstances. In this study we observe all four OH transitions in the direction of Extended Green Objects (EGOs) that trace shocked gas (possibly from outflows) in high-mass star formation regions. Previous studies have found a high incidence of class I methanol maser emission in these objects, suggesting that OH(1720) masers might also be abundant in this sample. Observations of 20 northern EGOs (δ > −17°) were carried out with the Jansky Very Large Array of all four ground state OH transitions, the HI line, and the 20 centimeter continuum. Positive detection of OH lines was obtained for 10 EGOs: OH lines at 1665 and 1667 MHz were detected toward 45% of the sample. The stellar OH line at 1612 MHz was detected toward 15% of the sample. The 1720 MHz emission line was detected in only one EGO source, G45.47+0.07, which is also presents the strongest main-line OH emission of our sample. We measure the projected separations between OH masers and GLIMPSE point sources associated with EGOs (median value 0.04 pc), betweenOH and class II methanol masers (median value 0.03 pc), and between OH and class I methanol masers (median value 0.14 pc), thus confirming previous findings that class I methanol masers are located further from exciting sources than areOH and class II methanol masers. Bearing in mind the theoretical incompatibility of class I and class II methanol maser pumping schemes, and the obtained separations between class I methanol masers and other masers in the EGOs, we conclude that class I methanol masers do not co-exist with GLIMPSE point sources, OH and class II methanol masers in one and the same core. Rather, we suggest that the class I masers arise in distinct but neighboring cores, about 1 pc distant, and in a different evolutionary state. © 2015, Pleiades Publishing, Ltd. Source


Shcheslavskiy V.,Becker and Hickl GmbH | Morozov P.,Scontel | Divochiy A.,Scontel | Vakhtomin Yu.,Moscow State Pedagogical University | And 2 more authors.
Review of Scientific Instruments | Year: 2016

Time resolution is one of the main characteristics of the single photon detectors besides quantum efficiency and dark count rate. We demonstrate here an ultrafast time-correlated single photon counting (TCSPC) setup consisting of a newly developed single photon counting board SPC-150NX and a superconducting NbN single photon detector with a sensitive area of 7 × 7 μm. The combination delivers a record instrument response function with a full width at half maximum of 17.8 ps and system quantum efficiency ∼15% at wavelength of 1560 nm. A calculation of the root mean square value of the timing jitter for channels with counts more than 1% of the peak value yielded about 7.6 ps. The setup has also good timing stability of the detector-TCSPC board. © 2016 Author(s). Source


Kononov A.,RAS Institute of Solid State Physics | Egorov S.V.,RAS Institute of Solid State Physics | Titova N.,Moscow State Pedagogical University | Kvon Z.D.,RAS Semiconductor Physics Institute | And 3 more authors.
JETP Letters | Year: 2015

We experimentally investigate electron transport through the interface between a superconductor and the edge of a two-dimensional electron system with band inversion. The interface is realized as a tunnel NbN side contact to a narrow 8-nm HgTe quantum well. It demonstrates a typical Andreev behavior with finite conductance within the superconducting gap. Surprisingly, the conductance is modulated by a number of equally-spaced oscillations. The oscillations are present only within the superconducting gap and at lowest, below 1 K, temperatures. The oscillations disappear completely in magnetic fields, normal to the two-dimensional electron system plane. In contrast, the period of the oscillations is only weakly affected by the highest, up to 14 T, in-plane oriented magnetic fields. We interpret this behavior as the interference oscillations in a helical one-dimensional edge channel due to a proximity with a superconductor. © 2015, Pleiades Publishing, Inc. Source


Beck M.,University of Konstanz | Klammer M.,University of Konstanz | Rousseau I.,University of Konstanz | Gol'Tsman G.N.,Moscow State Pedagogical University | And 4 more authors.
Conference on Lasers and Electro-Optics Europe - Technical Digest | Year: 2015

We studied superconducting gap dynamics in a BCS superconductor NbN and electron doped cuprate superconductor PCCO following excitation with near-infrared (NIR) and narrow band THz pulses. Systematic studies on PCCO imply very selective electron-phonon coupling. © 2015 OSA. Source


Kobzova M.P.,Russian Academy of Medical Sciences | Zvereva N.V.,Russian Academy of Medical Sciences | Goryunov A.V.,Russian Academy of Medical Sciences | Shchelokova O.A.,Moscow State Pedagogical University | Simonov V.N.,Moscow State University
Zhurnal Nevrologii i Psihiatrii imeni S.S. Korsakova | Year: 2013

The results of psychological examination of 33 male patients with a diagnosis of schizotypal disorder (SD), mean age 22 years, with age at onset in adolescence and 20 healthy young men are presented. Cognitive performance in patients with SD did not differ from healthy people on all measures, with the exception of social adaptation. There was a trend towards the change of normative responses and, respectively, estimation of the results of psychological techniques. The data suggest that personality deficits play a more significant role in the social maladaptation of patients with SD than cognitive impairment. Source


Topchieva I.N.,Moscow State University | Panova I.G.,Moscow State University | Spiridonov V.V.,Moscow State University | Matukhina E.V.,Moscow State Pedagogical University | Kurganov B.I.,RAS A.N. Bach Institute of Biochemistry
Moscow University Chemistry Bulletin | Year: 2010

Noncovalent columnar polymers (NCPs) based on cyclodextrins (CD) are polymeric assemblies of molecules that have continuous hollow channels, the width of which is determined by the diameter of the cavity of the initial CDs. The repeating fragment in an NCP is the CD molecule. For NCPs that were obtained by the exclusion of polymer backbone macromolecule from the corresponding inclusion complexes (ICs) based on β-cyclodextrin (NCPexcl), the polymer length, expressed as the number of macrocycles in a single chain (n) is determined by the size of the included ligand, polypropylene glycol (PPG), and is the PPG polymerization degree divided by two. The determination of the molecular weight of an NCP obtained by the precipitation method (NCPprec) is rather difficult, since they are present in the aggregated state rather than in the form of individual molecules in solution. To estimate the molecular weight of NCPprec, an indirect method is used, which is based on the determination of the aggregation rate of the ICs formed as a result of the interaction between an NCP and polypropylene glycol with a fixed molecular weight (MW), in this case PPG 1000. The comparison of the aggregation rates of the inclusion between NCPexcb (which were synthesized using PPGs with different molecular weights) and PPG 1000 with the aggregation rate of the inclusion complex on the basis of NCPprec provided the estimation for the MWs of single polymer chains. The fact that the samples of NCPprec contain ~30% of the monomeric β-CD was taken into account when constructing the calibration curve. It was demonstrated that the MW of the polypropylene glycol corresponding to NCPprec is 1320 Da. Consequently, ~11-12 molecules of β-CD are included in the single chains of NCPprec. © 2010 Allerton Press, Inc. Source


Zhorin V.A.,RAS Semenov Institute of Chemical Physics | Lushcheikin G.A.,Moscow State Academy of Instrument Engineering and Computer Science | Razumovskaya I.V.,Moscow State Pedagogical University
Russian Journal of Physical Chemistry A | Year: 2012

It is established that the plastic deformation of low-density polyethylene (LDPE) under a pressure 0.5-2.0 GPa on a high-pressure apparatus of the Bridgman anvil type leads to the appearance of thermostimulated currents in samples, indicating that the samples contain trapped electrons. It is shown that two peaks are present on the temperature dependences of the currents; one of these is most probably related to the cold crystallization of the polymer, its structure being destroyed upon high-pressure deformation, while the other is related to the melting of the polymer. It is noted that the peaks were absent on temperature dependences of the currents for LDPE blends with some components; this could be due to the formation of a conducting state at interfaces. It is found that the electroconductivity of some blends after processing under pressure was higher than that in LDPE itself by a factor of 25. © Pleiades Publishing, Ltd., 2012. Source


Potapov M.B.,Moscow State Pedagogical University | Greenslade P.,Australian National University | Greenslade P.,University of Ballarat | Greenslade P.,South Australian Museum
Zoologischer Anzeiger | Year: 2010

Folsomia loftyensis Womersley is redescribed based on material from South Australia, Victoria and Queensland. The species exhibits, for the genus, an unusual sensillary pattern on the posterior abdominal segments. The arrangement and form of the five sensilla on the genital segment of most described species of Folsomia from the Palearctic are analysed and species divided into groups based on these characters. Several different lineages are detected. © 2010 Elsevier GmbH. Source


Sun X.,CAS Changchun Northeast Institute of Geography and Agroecology | Gao Y.,CAS Shanghai Institutes for Biological Sciences | Potapov M.B.,Moscow State Pedagogical University
Journal of Natural History | Year: 2014

The present paper is the third contribution to the knowledge of littoral Collembola of China. Species of the genus Thalassaphorura occurring in sandy and shingly beaches in China are reviewed. Descriptions of two new species, Thalassaphorura brevisetosa sp. nov. and Thalassaphorura hainanica sp. nov. are provided. Thalassaphorura duplopunctata and Thalassaphorura lifouensis are recorded for the first time from China, and T. duplopunctata is re-described mainly based on Chinese specimens. Thalassaphorura brevisetosa sp. nov. is characterized by having strongly reduced unguiculus and very short body chaetae. Thalassaphorura hainanica sp. nov. resembles Thalassaphorura pomorskii from which it differs by 2 + 2 pso on Abd. IV, absence of chaetae on Th. I sternum and four chaetae on subcoxa 1 of leg I, among other characters.http://www.zoobank.org/urn:lsid:zoobank.org:pub:B8AC3DB3-DF12-47E2-ACEE-969D72C594C8. © 2013 © 2013 Taylor & Francis. Source


Potapov M.,Moscow State Pedagogical University | Babenko A.,RAS Severtsov Institute of Ecology
Journal of Natural History | Year: 2014

Three new species and one new genus are described in this paper: Mucronia fjellbergi sp. nov, Aggresopygus sibiricus sp. et gen. nov, and A. armatus sp. nov. Additional details of morphology and distribution are provided for Micrisotoma achromata Bellinger.http://zoobank.org/urn:lsid:zoobank.org:pub:D2A206F3-F51B-479B-8930-2A7DC7522412. © 2014 Taylor & Francis. Source


Novikov A.S.,Moscow State Pedagogical University | Kuznetsov M.L.,University of Lisbon | Pombeiro A.J.L.,University of Lisbon
Chemistry - A European Journal | Year: 2013

The theoretical background of the formation of N-heterocyclic oxadiazoline carbenes through a metal-assisted [2+3]-dipolar cycloaddition (CA) reaction of nitrones R1CH=N(R2)O to isocyanides Ci≡NR and the decomposition of these carbenes to imines R1CH=NR2 and isocyanates O=C=NR is discussed. Furthermore, the reaction mechanisms and factors that govern these processes are analyzed in detail. In the absence of a metal, oxadiazoline carbenes should not be accessible due to the high activation energy of their formation and their low thermodynamic stability. The most efficient promotors that could assist the synthesis of these species should be "carbenophilic" metals that form a strong bond with the oxadiazoline heterocycle, but without significant involvement of π-back donation, namely, AuI, AuIII, PtII, PtIV, Re V, and PdII metal centers. These metals, on the one hand, significantly facilitate the coupling of nitrones with isocyanides and, on the other hand, stabilize the derived carbene heterocycles toward decomposition. The energy of the LUMOCNR and the charge on the N atom of the Ci≡N group are principal factors that control the cycloaddition of nitrones to isocyanides. The alkyl-substituted nitrones and isocyanides are predicted to be more active in the CA reaction than the aryl-substituted species, and the N,N,C-alkyloxadiazolines are more stable toward decomposition relative to the aryl derivatives. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Makarov K.V.,Moscow State Pedagogical University | Sundukov Y.N.,State Nature Reserve Kurilskiy
ZooKeys | Year: 2014

A new species, Bembidion (?Nipponobembidion) ruruy sp. n., is described from the foot of Ruruy Volcano, Kunashir Island, Kuril Archipelago, Russia. It is only the second consubgener, being characterized by the reduced wings, the rounded elytral shoulders, and the backward position of the posterior supra-orbital pore. In this connection, the subgenus Nipponobembidion Habu & Baba, 1968 is rediagnosed and both of its species are keyed. It might have originated from Plataphodes Ganglbauer, 1891, possibly in relation to volcanic activities in the region. © K.V. Makarov, Yu.N. Sundukov. Source


Limborska S.A.,Russian Academy of Sciences | Khrunin A.V.,Russian Academy of Sciences | Flegontova O.V.,Russian Academy of Sciences | Tasitz V.A.,Moscow State Pedagogical University | Verbenko D.A.,Russian Academy of Sciences
Annals of Human Biology | Year: 2011

Background: The allele frequency patterns of the D1S80 variable number tandem repeat (VNTR) locus have been shown to be multimodal in many different human populations. Aim: To explore the complex allele distribution of the D1S80 polymorphic locus in different populations comparing the derived single nucleotide polymorphism (SNP) rs16824398D1S80 haplotype frequencies in samples of European (Russians), Asian (Yakuts) and sub-Saharan African origin. Subjects and methods: The D1S80 locus together with its 5′-flanking region including SNP rs16824398 was amplified using allele-specific polymerase chain reaction (PCR). Results: Haplotype phase determination sub-divided the total D1S80 allele spectrum into two allele sets marked by the corresponding SNP rs16824398 alleles. In non-African samples, the most frequent D1S80 alleles had 24 and 18 repeats that were associated with different SNP backgrounds (T and G alleles, respectively). Both combinations also occurred in Africans, but these samples exhibited an expanded spectrum of VNTR alleles on both SNP backgrounds. Conclusions: The sub-division of the D1S80 allele spectrum shape on the linked SNP background is indicative of populations of the main human groups. The reported differences in D1S80 allele spectra between populations of different ethnic origins can be explained by the ratios of chromosomes with T and G alleles. © Informa UK, Ltd. Source


Murav'eva O.V.,Moscow State Pedagogical University
Journal of Applied and Industrial Mathematics | Year: 2014

We consider the methods for matrix correction or correction of all parameters of systems of linear equations and inequalities. We show that the problem of matrix correction of an inconsistent system of linear inequalities with the nonnegativity condition is reduced to a linear programming problem. Some stability measure is defined for a given solution to a system of linear inequalities as the minimal possible variation of parameters under which this solution does not satisfy the system. The problem of finding the most stable solution to the system is considered. The results are applied to constructing an optimal separating hyperplane in the feature space that is the most stable to the changes of features of the objects. © 2014 Pleiades Publishing, Ltd. Source


Shurakov A.,Harvard - Smithsonian Center for Astrophysics | Tong C.-Y.E.,Harvard - Smithsonian Center for Astrophysics | Grimes P.,Harvard - Smithsonian Center for Astrophysics | Blundell R.,Harvard - Smithsonian Center for Astrophysics | Golt'Sman G.,Moscow State Pedagogical University
IEEE Transactions on Terahertz Science and Technology | Year: 2015

In this paper, we propose and present data from a fast THz detector based on the repurpose of hot electron bolometer mixers (HEB) fabricated from superconducting NbN thin film. This detector is essentially a traditional NbN bolometer element that operates under the influence of a microwave pump. The injected microwave power serves the dual purpose of enhancing the detector sensitivity and reading out the impedance changes of the device in response to incident THz radiation. We have measured an optical Noise Equivalent Power of 4 pW/Hz for our detector at a bath temperature of 4.2 K. The measurement frequency was 0.83 THz and the modulation frequency was 1.48 kHz. The readout scheme is versatile and facilitates both high-speed operation as well as multi-pixel applications. © 2014 IEEE. Source


Mamalyga M.L.,Moscow State Pedagogical University
Neurochemical Journal | Year: 2013

We found different associations between disturbances in the brain and heart during compensated and decompensated heart failure. Changes in the content of monoamines (MAs) in the brain at different stages of heart failure (HF) were related to different causes. The increased activity of MA-ergic systems during compensated HF was apparently associated with the functional load that is experienced by the structures of the brain during the development of cerebral processes of autonomic regulation of the compensatory function of the heart. Cerebral hemodynamics in patients with decompensated HF leads to a decrease in the activities of the dopaminergic and serotonergic systems and a permanent mismatch of the central and autonomic mechanisms of cardiac-activity regulation. A functional load test with the administration of dopamine and serotonin precursors revealed unequal MA-synthesizing capabilities of the brain in animals with compensated and decompensated HF. Reduced capacity of the MA-ergic systems during decompensated HF may lead to overwork of the central mechanisms of regulation and the gradual depletion and disruption of compensatory mechanisms, which aggravates the progression of heart failure. © 2013 Pleiades Publishing, Ltd. Source


Meschersky I.G.,RAS Severtsov Institute of Ecology | Kuleshova M.A.,Moscow State Pedagogical University | Litovka D.I.,Pacific Reseach Fisheries Center | Burkanov V.N.,Russian Academy of Sciences | And 5 more authors.
Biology Bulletin | Year: 2015

This article presents data on frequencies of mitotypes (control region and cytochrome b and ND2 genes) in groups of Gray Whales found off the Chukotka Peninsula, Koryak coast, eastern Kamchatka and Sakhalin Island. From north to south the number of mitotypes decreased dramatically, but mitotypes which were predominant in the south were the same as ones also abundant in northern samples. For the control region sequences only, our data and data presented in the literature suggest that breeding areas in Baja California may include diversity of both distant groups of mitochondrial lineages known for the species. On the other hand, the same control region sequences may be found in different mitochondrial genomes, and so conclusions based on this mtDNA fragment only may be incorrect. © 2015, Pleiades Publishing, Inc. Source


Schulz H.-J.,Senckenberg Museum of Natural History | Potapov M.B.,Moscow State Pedagogical University
Zootaxa | Year: 2010

Folsomia mofettophila sp. nov. is described from cold, volcanic gas vents (mofettes) in the Northwest Bohemia (Czech Republic). The species is characterized by large post-antennal organ and combines characters of F. bisetosa Gisin and F. kuznetsovae Potapov & Taskaeva. Copyright © 2010, Magnolia Press. Source


Eremchev I.Y.,Russian Academy of Sciences | Vainer Y.G.,Russian Academy of Sciences | Naumov A.V.,Moscow State Pedagogical University | Kador L.,University of Bayreuth
Physics of the Solid State | Year: 2013

This paper presents the technique and results of the investigation of the structural relaxation in disordered solid media (polyisobutylene, toluene, ortho-dichlorobenzene) at temperatures below the glass transition point via the spectra and fluorescence images of single impurity fluorescent molecules (terrylene, tetra-tert-butylterrylene). Application of the thermal-cycling method has made it possible to significantly extend the temperature range of investigation (from 4. 5 K to the glass transition temperature). The changes observed in individual parameters of low-energy elementary excitations of the tunneling and vibrational types due to structural relaxation processes have been studied. It has been found that there is a spatial inhomogeneity in the distribution of the activation temperatures of local relaxation processes. © 2013 Pleiades Publishing, Ltd. Source


Goltsman G.N.,Moscow State Pedagogical University
EPJ Web of Conferences | Year: 2015

We present an overview of recent results for new generation of infrared and optical superconducting nanowire single-photon detectors (SNSPDs) that has already demonstrated a performance that makes them devices-of-choice for many applications. SNSPDs provide high efficiency for detecting individual photons while keeping dark counts and timing jitter minimal. Besides superior detection performance over a broad optical bandwidth, SNSPDs are also compatible with an integrated optical platform as a crucial requirement for applications in emerging quantum photonic technologies. By embedding SNSPDs in nanophotonic circuits we realize waveguide integrated single photon detectors which unite all desirable detector properties in a single device. © 2015 Owned by the authors, published by EDP Sciences. Source


Zemko P.,Slovak Academy of Sciences | Shugarov S.,Slovak Academy of Sciences | Kato T.,Kyoto University | Katysheva N.,Moscow State Pedagogical University
Contributions of the Astronomical Observatory Skalnate Pleso | Year: 2014

We present the results of our study of a long and short-term variability of ER UMa. Obtained light curves revealed presence of superhumps during the whole supercycle. The superhumps period was not stable but vary-ing from night to night. The O-C diagram suggests that both positive and negative superhumps were present. The form of the O-C digram is consistent with recently presented Keppler data of another SU UMa-type star V1504 Cyg. We also examined data of about 20 years of observations of ER UMa from different databases. The O-C diagram for the moments of superoutbursts revealed a systematic change of the supercycle within 43.6 and 59.2 d. We associate these variations with the changes of a mass transfer rate. Source


Eremchev M.Yu.,Moscow Institute of Physics and Technology | Eremchev I.Yu.,Institute for Spectroscopy | Naumov A.V.,Moscow State Pedagogical University
EPJ Web of Conferences | Year: 2015

In this research a relation between the accuracy of restoration of the single quantum dots (QD) CdSe/CdS/ZnS cross-cut coordinates and luminescence intensity was investigated. It was shown that the limit of the accuracy of determining the coordinates of a single QD for a considerable total amount of registered photons approaches its limiting value that is comparable to the size of the QD. It also means that the installation used in the research is mechanically stable enough to reach the limiting values of determination accuracy of point emitters coordinates. © 2015 Owned by the authors, published by EDP Sciences. Source


Huang C.-W.,CAS Shanghai Institutes for Biological Sciences | Potapov M.,Moscow State Pedagogical University | Gao Y.,CAS Shanghai Institutes for Biological Sciences
Zootaxa | Year: 2010

The three known species in the genus Narynia Martynova, Narynia setosa Martynova, Narynia andreevae Martynova in Martynova & Tshelnokov and Narynia kolimiensis Martynova are revised based on type specimens. A new species for the genus, Narynia luanae sp.n. from Northwest China, is described. An identification key to the species and the diagnosis of the genus are given. Copyright © 2010 Magnolia Press. Source


Kolibac J.,Moravian Museum | Zaitsev A.A.,Moscow State Pedagogical University
Zootaxa | Year: 2010

A larva of Ancyrona diversa Pic, 1921 (Coleoptera: Trogossitidae) associated with adults is described in detail. Its morphological features are compared with known larvae of the tribe Lophocaterini and the subfamilies Trogossitinae and Peltinae. Phylogenetic and systematic implications are discussed. A resurrection of the subfamily name Lophocaterinae is suggested for the trogossitid tribes Decamerini, Lophocaterini and Ancyronini. Copyright © 2010 Magnolia Press. Source


Popov A.M.,Institute of Spectroscopy | Lozovik Y.E.,Moscow Institute of Physics and Technology | Krivorotov E.K.,Moscow State Pedagogical University
Computational Materials Science | Year: 2012

Interwall interaction energies, as well as barriers to relative sliding of the walls along the nanotube axis, are first calculated for pairs of both armchair or both zigzag adjacent walls of carbon nanotubes with a wide range of radiuses. It is found that for the pairs with the radius of the outer wall greater than 5 nm both the interwall interaction energy and barriers to the relative sliding per one atom of the outer wall only slightly depends on the wall radius. A wide set of the measurable physical quantities determined by these barriers are estimated as a function of the wall radius: shear strengths and diffusion coefficients for relative sliding of the walls along the axis, as well as frequencies of relative axial oscillations of the walls. For nonreversible telescopic extension of the walls, maximum overlap of the walls for which threshold static friction forces are greater than capillary forces is estimated. Possibility of experimental verification of the calculated barriers by measurements of the estimated physical quantities is discussed. © 2011 Elsevier B.V. All rights reserved. Source


Potapov M.,Moscow State Pedagogical University | Kahrarian M.,Islamic Azad University at Kermanshah | Kahrarian M.,Sari University of Agricultural Sciences and Natural Resources | Deharveng L.,CNRS Systematics, Biodiversity and Evolution Institute | Shayanmehr M.,Sari University of Agricultural Sciences and Natural Resources
Zootaxa | Year: 2015

A new genus is proposed based on a new species from Iran, Ephemerotoma skarzynskii gen. et sp. nov., and three known species: E. huadongensis (Chen, 1985) comb. nov., E. multituberculata (Martynova, 1971) comb. nov. and E. porcella (Ellis, 1976) comb. nov. The genus shares the characters of Subisotoma Stach and Proctostephanus Börner and is distrib-uted in southern areas of Eurasia (Eastern Mediterranean, Iran, Tajikistan, China). Ephemerotoma gen. nov. belongs to the Proisotoma-complex and is characterized by a simple maxillary palp, only 4 guards on labial papilla E and 2 prelabral chaetae. Four s-chaetae on Abd.V are arranged in two rows, two anterior and two posterior chaetae. All members of Ephemerotoma gen. nov. are redescribed or discussed based on type or fresh material, and a key to species of the genus is given. Scutisotoma potapovi Xie & Chen, 2008 is considered a synonym of E. huadongensis, while Proisotoma anop-olitana is moved to the genus Proctostephanus. Sexual dimorphism is described for three species. Copyright © 2015 Magnolia Press. Source


Genrikhov I.E.,Moscow State Pedagogical University
Pattern Recognition and Image Analysis | Year: 2011

Questions on the construction of recognition algorithms under conditions of incomplete information (blanks occur in the feature description of objects) are considered. Models using full decision trees are built. The results of testing on real problems are adduced. © 2011 Pleiades Publishing, Ltd. Source


Moss D.,University of Manchester | Sokoloff D.,Moscow State Pedagogical University | Beck R.,Max Planck Institute for Radio Astronomy | Krause M.,Max Planck Institute for Radio Astronomy
Astronomy and Astrophysics | Year: 2010

Context. Contemporary studies of the symmetry properties of galactic magnetic fields contain two contradictory ideas. There are observational and theoretical hints that large-scale magnetic fields are symmetric with respect to the galactic plane in the disc, and antisymmetric in the halo. On the other hand, standard galactic dynamo models without a galactic wind give symmetric or antisymmetric configurations in both disc and halo regions simultaneously. Aims. Here we explore the role of a galactic wind in resolving this dichotomy. Methods. The key idea is that a galactic wind must be be taken into account in order to resolve the problem. We perform a search of the parameter space of galactic dynamo models containing such winds. Results. By including a galactic wind, magnetic configurations of such symmetry, i.e. approximately even in the disc and odd in the halo, can be obtained. We note that a variety of other solutions can also be found. Conclusions. A galactic wind plays a significant role in determining the structure of galactic magnetic configurations and should be included in future modelling. © ESO, 2010. Source


St. Louis K.O.,West Virginia University | Filatova Y.,Moscow State Pedagogical University | Topbas S.,Anadolu University | Ozdemr S.,Anadolu University | And 3 more authors.
International Journal of Speech-Language Pathology | Year: 2010

The investigators sought to explore and compare the identification of cluttering vs stuttering in four different country samples. After reading lay definitions of the two fluency disorders in their own language, convenience samples of 60-90 adult respondents from Turkey, Bulgaria, Russia, and the US identified 51-119 children or adults who either cluttered, stuttered, or both. They also indicated whether or not they, themselves, cluttered or stuttered. The majority of respondents in all four samples identified at least one person who cluttered, stuttered, or cluttered and stuttered. The average respondent identified one person with a fluency disorder, most likely a stutterer, less likely a clutterer, and least likely a clutterer-stutterer. Both similarities and differences characterized those identified in the three groups, e.g., the sex ratios were not the same. As with stuttering, the public apparently is aware of cluttering individuals and can identify such persons. © 2010 The Speech Pathology Association of Australia Limited. Source


Naumov A.V.,Moscow State Pedagogical University | Eremchev I.Y.,Russian Academy of Sciences | Gorshelev A.A.,Russian Academy of Sciences | Gladush M.G.,Russian Academy of Sciences | And 2 more authors.
EPJ Web of Conferences | Year: 2015

In our work, we demonstrate the advantages and drawbacks of the methods for generating nonclassical light using single luminescent molecules in solid matrices at cryogenic temperatures when excitation of zero-phonon spectral lines is possible. It is shown that for certain impurity-matrix systems it is possible to guarantee the following: single-photon generation at a rate of up to tens-hundreds MHz, allocation of an extremely narrow generation band (a few MHz), wavelength tuning over a wide range (tens of nanometers), generation of biphoton radiation, high photostability and absence of a stochastic spectral dynamics. © 2015 Owned by the authors, published by EDP Sciences. Source


Sokolova L.V.,Lomonosov Moscow University of Fine Chemical Technology | Matukhina E.V.,Moscow State Pedagogical University
Polymer Science - Series A | Year: 2010

X-ray diffraction and TMA studies show that surfactant sodium alkyl sulfonate (C15) forms one of its two LC structures (distinguished by the smallest layer periodicity) in butadiene-nitrile elastomers containing different amounts of acrylonitrile units. In this case, the surfactant serves as a structural plasticizer and facilitates a more complete selective segregation of microblocks of trans-1,4-butadiene units and, especially, of sequences of alternating trans-1,4-butadiene and acrylonitrile units. © Pleiades Publishing, Ltd., 2010. Source


Sokolova L.V.,Lomonosov Moscow University of Fine Chemical Technology | Matukhina E.V.,Moscow State Pedagogical University | Livanova N.M.,RAS Emanuel Institute of Biochemical Physics | Shershnev V.A.,Lomonosov Moscow University of Fine Chemical Technology
Polymer Science - Series A | Year: 2010

A comparative analysis of the ozone resistance of vulcanizates based on butadiene-nitrile elastomers with the same network density but different contents of acrylonitrile units is performed. The role of the orientation of chain fragments of vulcanizate chains during the reaction of double bonds with ozone is demonstrated. © Pleiades Publishing, Ltd., 2010. Source


Frick P.,RAS Institute of Continuous Media Mechanics | Sokoloff D.,Moscow State Pedagogical University | Stepanov R.,RAS Institute of Continuous Media Mechanics | Beck R.,Max Planck Institute for Radio Astronomy
Monthly Notices of the Royal Astronomical Society: Letters | Year: 2010

The Faraday rotation measure synthesis, as a method for analysing multichannel observations of polarized radio emission to investigate galactic magnetic field structures requires the definition of complex polarized intensity in the wavelength range -∞ < λ2 < ∞. The problem is that the measurements at negative λ2 are not possible. We introduce a simple method for continuation of the observed complex polarized intensity P(λ2) into the domain λ2 < 0 using symmetry arguments. The method is suggested in context of magnetic field recognition in galactic discs where the magnetic field is supposed to have a maximum in the equatorial plane. The method is quite simple when applied to a single Faraday rotating structure on the line of sight. Recognition of several structures on the same line of sight requires a more sophisticated technique. We also introduce a wavelet-based algorithm which allows us to consider a set of isolated structures in the (φ,λ2) plane (where φ is the Faraday depth). The method essentially improves the possibilities for reconstruction of complicated Faraday structures using the capabilities of modern radio telescopes. © 2009 The Authors. Journal compilation © 2009 RAS. Source


Moss D.,University of Manchester | Kitchatinov L.L.,Institute for Solar Terrestrial Physics | Sokoloff D.,Moscow State Pedagogical University
Astronomy and Astrophysics | Year: 2013

Context. During a solar magnetic field reversal the magnetic dipole moment does not vanish, but migrates between poles, in contradiction to the predictions of mean-field dynamo theory. Aims. We try to explain this as a consequence of magnetic fluctuations. Methods. We used the statistics of fluctuations to estimate observable signatures. Results. Simple statistical estimates, taken with results from mean-field dynamo theory, suggest that a non-zero dipole moment may persist through a global field reversal. Conclusions. Fluctuations in the solar magnetic field may play a key role in explaining reversals of the solar dipole. © ESO, 2013. Source


Kostjuk S.,Russian Academy of Medical Sciences | Loseva P.,Russian Academy of Medical Sciences | Chvartatskaya O.,Moscow State Pedagogical University | Ershova E.,Russian Academy of Medical Sciences | And 8 more authors.
Expert Opinion on Biological Therapy | Year: 2012

Introduction: The content of GC-rich ribosomal repeats (rDNA) in cell-free DNA (cfDNA) of patients with various diseases is several times higher as compared with genomic DNA (gDNA) and cfDNA of healthy donors. rDNA may act as Toll-like receptor 9 (TLR9) ligands and affect human adipose-derived mesenchymal stem cells (haMSCs). Here we explore effects of human cfDNAs and model rDNA fragments on cultured haMSCs. Areas covered: Both cfDNAs and cloned rDNA stimulate expression of TLR9 (qRT-PCR). Treatment with cloned rDNA leads to an increase in the number of TLR9+ cells (FACS), expression levels for both TLR9 and Myd88, the translocation of nuclear factor-kappa B to the nuclei and up-regulation of TNFα and IL-10 cytokines (ELISA). As shown by an analysis of γH2AX-foci and MTT test, the preconditioning of haMSCs with cloned rDNA fragment increases the resistance of these cells to irradiation at 2Gy, while the treatments with control gDNA did not stimulate either TLR9- or NF-kB-dependent signaling pathways. Expert opinion: GC-rich sequences present in cfDNA stimulate endogenous stems cells when body is exposed to adverse conditions. GC-rich fragments of human DNA may be used for preconditioning of therapeutic MSCs aiming at an increase in their survival in the ailing body. © 2012 Informa UK, Ltd. Source


Mamalyga M.L.,Moscow State Pedagogical University
Bulletin of Experimental Biology and Medicine | Year: 2013

Heart rate variability parameters and the level of convulsive readiness during pentylenetetrazole-induced kindling in rats were analyzed using telemetric ECG and EEG monitoring. Analysis of ECG recorded over many days showed that heart rate variability was equally reduced after 7 and 27 days of kindling irrespective of the level of convulsive readiness. Reduced sympathovagal index after 7 days of kindling showed the compensatory character of changes. However, compensatory mechanisms cannot prevent high risk of life-threatening arrhythmias. High convulsive readiness after 27 days of kindling was accompanied by a shift of autonomic balance towards the increase in sympathetic tone, which may lead to decompensation and transition to a prenosological state. © 2013 Springer Science+Business Media New York. Source


Golova L.K.,RAS Topchiev Institute of Petrochemical Synthesis | Makarov I.S.,RAS Topchiev Institute of Petrochemical Synthesis | Matukhina E.V.,Moscow State Pedagogical University | Kulichikhin V.G.,RAS Topchiev Institute of Petrochemical Synthesis
Polymer Science - Series A | Year: 2010

Highly concentrated solutions of cellulose and solutions of cellulose blends with synthetic polymers are prepared via the solid-phase dissolution of cellulose in N-methylmorpholine-N-oxide. The phase state and morphological features of these solutions are studied via DSC and polarization microscopy, and their rheological behavior is considered. Evolution in the structure of cellulose in these systems is investigated at all stages during spinning of oriented fibers from solutions. It is first shown that the addition of synthetic polymers to cellulose makes it possible to control processes of cellulose structuring; to stop them at the stage of mesophase formation; and, thus, to avoid further perfection of the structure and formation of the crystalline phase of cellulose. © 2010 Pleiades Publishing, Ltd. Source


Bedin S.A.,RAS Shubnikov Institute of Crystallography | Rybalko O.G.,RAS Shubnikov Institute of Crystallography | Polyakov N.B.,RAS Shemyakin Ovchinnikov Institute of Bioorganic Chemistry | Zagorskii D.L.,RAS Shubnikov Institute of Crystallography | And 3 more authors.
Inorganic Materials: Applied Research | Year: 2010

Cylindrical and conical micro- and nanowires were fabricated by matrix (template) synthesis in pores of track membranes. A technique for filling matrix pores with metal (copper, nickel, and silver) was developed. Desorption/ionization of biological molecules from metal micro- and nanowires was experimen- tally studied. © Pleiades Publishing, Ltd., 2010. Source


Gosset E.,University of Liege | De Becker M.,University of Liege | Naze Y.,University of Liege | Carpano S.,European Space Agency