Dulamsuren C.,University of Gottingen |
Wommelsdorf T.,University of Gottingen |
Zhao F.,University of Gottingen |
Zhao F.,Peking University |
And 5 more authors.
Ecosystems | Year: 2013
The larch forests at the southern limit of the Siberian boreal forest in Central Asia have repeatedly experienced strong recent growth declines attributed to decreasing summer precipitation in the course of climate warming. Here, we present evidence from the southernmost Larix sibirica forests in eastern Kazakhstan that these declines are primarily caused by a decrease in effective moisture due to increasing summer temperatures, despite constant annual, and summer precipitation. Tree-ring chronologies (>800 trees) showed a reduction by 50-80% in mean ring width and an increase in the frequency of missing rings since the 1970s. Climate-response analysis revealed a stronger (negative) effect of summer temperature (in particular of the previous year's June and July temperature) on radial growth than summer precipitation (positive effect). It is assumed that a rise in the atmospheric vapor pressure deficit, which typically increases with temperature, is negatively affecting tree water status and radial growth, either directly or indirectly through reduced soil moisture. Larch rejuvenation ceased in the 1950s, which is partly explained by increasing topsoil desiccation in a warmer climate and a high drought susceptibility of larch germination, as was demonstrated by a germination experiment with variable soil moisture levels. The lack of regeneration and the reduced annual stem increment suggest that sustainable forest management aiming at timber harvesting is no longer feasible in these southern boreal forests. Progressive climate warming is likely to cause a future northward shift of the southern limit of the boreal forest. © 2013 Springer Science+Business Media New York.
Ualiyeva R.M.,Lomov Street |
Akhmetov K.K.,Pavlodar State University
International Journal of Pharma and Bio Sciences | Year: 2016
The functional and morphological method based on the data of electron microscopy is a broad spectrum of facts that allow researchers to assess and compare the extent and the level of development of certain structures and their role in adaptation to the conditions in the localization organs. This article is devoted to studying epithelial tissues of the Dendrithobilharzia purverulenta dioecious trematodes by means of electron microscopy with involvement of histological techniques for the purpose of determining the overall morphology of helminths. Data has been obtained about the ultrastructure of the tegument layers and the muscular system in bions of both sexes.
Tleukenov S.K.,L.N.Gumilyov Eurasian National University |
Dosanov T.S.,Pavlodar State University
Proceedings of Forum Acusticum | Year: 2014
In present study conditions for the existence and characteristics of surface waves propagating along the plane boundary of orthorhombic symmetry 222, mm2 ? mmm classes anisotropic halfspace with piezomagnetic properties. The cases of the metallized surface of the half-space and the free (vacuum) surface are considered. The interaction between elastic and electromagnetic waves in piezomagnetic media is considered on a joint equation set of motion of elastic media and the full Maxwell's equations for electromagnetic field. For the metallized and free surface case the surface wave velocity in explicit analytical form was determined. Coefficient of amplitude decay deep into the half-space are also obtained.
Shapauov A.K.,Kokshetau State University |
Negimov S.,L.N.Gumilyov Eurasian National University |
Zhusipov N.,Pavlodar State University
Life Science Journal | Year: 2013
The article deals with a general review of the previously unexplored in the world dramatic art and drama genre of the scenic literature in the context of the drama and theatre of the Turkic nations of the Central Asia and the Volga, the Siberian regions of Russia, the Caucasian in the late XIX - early XX century. On the basis of the specific scenic and literature facts a system research on the Turkic nations' inherent pursuit of mass theatrical performances and festivities was conducted. The scenic literature, drama and dramatic art of the related Turkic nations originate in the folk games and rites, develop, adopting the centuries-old traditions of the scenic literature and the art of the East and the Europe, gain integrity and enter the scene of the world literature and the art. For the first time the issues of handwritten plays are purposively considered, the genre and style types from folklore to theatrical performances, the evolution of interactions and comparisons with the scenic works of the Turkic nations of the Central Asia and the Volga, the Siberian regions of Russia, the Caucasian in the late XIX - early XX centuries are fundamentally investigated.
Novozhilov A.N.,Pavlodar State University |
Kryukova E.V.,Pavlodar State University |
Novozhilov T.A.,Omsk State University
Russian Electrical Engineering | Year: 2014
Electroenergetics and industry mainly use induction motors (IMs) as drives of mechanisms. One method to improve their operational reliability and service life is effective and timely diagnosis of abnormal operating modes, in particular, rotor eccentricity. However, for a number of reasons, it has not before been possible to develop a diagnostic system that would allow one to effectively identify the rotor static eccentricity during an operational process. To solve this problem, a method of diagnostics of rotor eccentricity in IM has been proposed that uses a stator current, and the amount of eccentricity is determined by the operative value of additional current. It is proposed to carry out IM diagnostics in an idling regime in two stages. At the first stage, the reference values of a harmonics of stator current’s components of additional current, its operative value, and dependence from the rotor eccentricity are determined and saved for a fully functioning machine. At the second stage, the values of a harmonics of stator current’s and components of additional current are determined. The operative value of additional current iscalculated taking into account the relation of the received harmonics to their reference value, and the shift of a rotor is determined by reference dependence. © A.N. Novozhilov, E.V. Kryukova, T.A. Novozhilov, 2014.
Kletsel M.,Tomsk Polytechnic University |
Mashrapov B.,Pavlodar State University
Przeglad Elektrotechniczny | Year: 2016
Operation algorithm of two parallel lines protection that controls presence of current in their phases has been suggested. Its realizations on microprocessor and semiconducting element bases have been given. It is shown that protection is tuned away only from the unbalance current. Calculation of the value of its cascade action zone is formulated. © 2016,Wydawnictwo SIGMA - N O T Sp. z o.o. All rights reserved.
Volynkin A.,Tomsk State University |
Titov S.,Pavlodar State University
Check List | Year: 2016
A little-known species of Lepidoptera, Caradrina monssacralis (Varga & L. Ronkay, 1991), is recorded in Kazakhstan for the first time. This is a westernmost known locality of the species. Adults, male genitalia and the habitat of the species are illustrated. © 2016 Check List and Authors.
Akhmetov K.K.,Pavlodar State University |
Chidunchi I.Y.,Pavlodar State University
International Journal of Zoological Research | Year: 2015
The issue of structural organization of muscular elements of a trematodes’ skin-muscular sac is considered in the study. Special attention is paid to an analysis of materials of preceding researches, study of foreign authors and also to additional literature reflecting peculiarities of structure of a trematodes’ body muscular system. The stated issue is insufficiently studied and calls for further researches. A comparative analysis of places of trematodes’ localization, taking into consideration disclosure of presence of special definite elements in them, impeding or weakening a function of a trematodes’ body muscular system, is given. The purpose of the present study is a detailed analysis of the locomotor apparatus peculiarities of the trematodes of particular species. Typical peculiarities of a trematodes’ body muscular system, separate organs and systems are picked out and described by this study. The study comes to a conclusion that the given theme remains unexplored, relevant and requires a detailed scrutiny of features of a body muscular system of definite trematodes’ species. © 2015 Academic Journals Inc.
Smetkanovna I.K.,Pavlodar State University |
Tuleuevna K.G.,Pavlodar State University
Biology and Medicine | Year: 2015
This article reviews the issues of development of competitive food products, in particular semi-finished cutlets, meatbased with adjustable, predetermined characteristics of food and biological value, enriched with functional ingredients that have a positive effect on the individual functions of the body or the body as a whole. The data on the theoretical, experimental studies on the optimization of the composition of meat products and a comprehensive assessment of the quality of semi-finished meat on the physico-chemical, microbiological, and organoleptic characteristics are provided; the formulation of new kinds of meat and fish products is optimized.
Zhanat M.,Pavlodar State University
Life Science Journal | Year: 2013
This article provides the methodology of determining the living standard of the population of a country. By using this methodology one can make a comparative analysis of the standard of living in the territorial scale, i.e., comparing the standards of living in different countries. A comparative analysis of the standard of living in a time interval can also be made, i.e., comparing the standards of living in different times. The methodology of determining the population living standard examines 110 component indices and the 14 derivative indices reached on the basis of indicators characterizing the comprehensive situation of the population. On this basis the generalizing index is determined by the index of the standard of living of the population. Furthermore, in the methodology composed of the values of the final index, the standard of living of the population is divided into the categories of rich, sustainable, poor, and pauper levels.