East Siberian State Academy of Education

Irkutsk, Russia

East Siberian State Academy of Education

Irkutsk, Russia
SEARCH FILTERS
Time filter
Source Type

Voronkov M.G.,Favorsky Irkutsk Institute of Chemistry | Grebneva E.A.,Favorsky Irkutsk Institute of Chemistry | Albanov A.I.,Favorsky Irkutsk Institute of Chemistry | Zel'Bst E.A.,East Siberian State Academy of Education | And 4 more authors.
Journal of Organometallic Chemistry | Year: 2014

A series of new pentacoordinate intramolecular organosilicon complexes F(Ar)Si(OCH2CH2)2NMe (Ar = 4-MeC 6H4 (1), 4-MeOC6H4 (2), 4-ClC 6H4 (3), 2-BrC6H4 (4), 3-NO 2C6H4 (5)) has been synthesized by transsilylation of aryltrifluorosilanes ArSiF3 by N-methyl-bis(2-trimethylsiloxyethyl)amine. Compounds 1-5 have been fully characterized by 1H, 13C, 19F, 29Si NMR spectroscopy and X-ray diffraction analysis (for compound 3). Variable-temperature 19F NMR studies of 5 indicate stereodynamic process of the ligand exchange with activation barrier ΔGc≠ of 13.1 kcal mol-1. © 2014 Elsevier B.V. All rights reserved.


Semirov A.V.,East Siberian State Academy of Education | Derevyanko M.S.,East Siberian State Academy of Education | Bukreev D.A.,East Siberian State Academy of Education | Moiseev A.A.,East Siberian State Academy of Education | Kurlyandskaya G.V.,University of the Basque Country
Solid State Phenomena | Year: 2014

The influence of the temperature, elastic tensile stresses and external magnetic field on the impedance of amorphous Co75Fe5Si4B16 ribbons was studied. It was observed that the character of the elastic tensile stresses influences the impedance and its changes in the external magnetic field are determined by a temperature of the ribbons. It was shown that changes of the stressimpedance character and magnetoimpedance temperature dependences were caused by a change in the sign of a magnetostriction constant with the temperature. © (2014) Trans Tech Publications, Switzerland.


Zel'Bst E.A.,East Siberian State Academy of Education | Korlyukov A.A.,RAS Nesmeyanov Institute of Organoelement Compounds | Voronkov M.G.,RAS Institute of Chemistry
Journal of Structural Chemistry | Year: 2013

The crystal and molecular structure of 4-chloro(benzoyloxymethyl) trifluorosilane 4-ClC6H4COOCH2SiF3 was redetermined using X-ray diffraction. The coordination polyhedron of the silicon atom in this structure is a trigonal bipyramid. The length of the axial O → Si coordination bond is 2.074(1) Å. © 2013 Pleiades Publishing, Ltd.


Voronkov M.G.,RAS Institute of Chemistry | Zel'bst E.A.,East Siberian State Academy of Education | Vasiliev A.D.,L.V. Kirensky Institute of Physics | Bolgova Yu.I.,RAS Institute of Chemistry | And 2 more authors.
Journal of Structural Chemistry | Year: 2011

By X-ray diffraction the crystal and molecular structure of N-(1-silatranylmethyl)phthalimide (SMP) is determined. The coordination polyhedron of the silicon atom in SMP, as in all silatranes, is a trigonal bipyramide; the phthalimide cycle is planar. The data presented indicate that the silatranylmethyl group almost does not affect the geometry of the phthalimide moiety. Original Russian Text Copyright © 2011 by M. G. Voronkov, É. A. Zel'bst, A. D. Vasiliev, Yu. I. Bolgova, A. S. Soldatenko, and O. M. Trofimova.


Vas'kovskii V.O.,Ural Federal University | Savin P.A.,Ural Federal University | Volchkov S.O.,Ural Federal University | Lepalovskii V.N.,Ural Federal University | And 2 more authors.
Technical Physics | Year: 2013

The magnetization reversal and magnetic impedance (MI) of films and film elements based on Fe19Ni81 and Fe72. 5Cu1. 1Nb1. 9Mo1. 5Si14. 2B8. 7 alloys with a varied thickness, heat-treatment temperature, and the number of thin Cu interlayers are studied. The dependences of the coercive force and the magnitude of MI on these parameters are found. Layered structuring is shown to be an effective method for improving the functional characteristics of MI elements. In elements containing nanocrystalline Fe19Ni81 layers, this is related to the restructuring of a magnetic structure; in elements containing amorphous Fe72. 5Cu1. 1Nb1. 9Mo1. 5Si14. 2B8. 7 layers, this improvement is likely to be caused by a decrease in the effective electrical resistivity. © 2013 Pleiades Publishing, Ltd.


Voronkov M.G.,RAS Institute of Chemistry | Trofimova O.M.,RAS Institute of Chemistry | Grebneva E.A.,RAS Institute of Chemistry | Chernov N.F.,East Siberian State Academy of Education | Abzaeva K.A.,RAS Institute of Chemistry
Russian Journal of General Chemistry | Year: 2011

Ways of phenyltrifluorosilane application in organoelementalal and organic synthesis are summarized and systematized for the first time. The methods of its synthesis, physicochemical properties, and reactivity are considered. Special attention is paid to the original experimental results obtained by the authors. © Pleiades Publishing, Ltd., 2011.


Bazhenova O.I.,Russian Academy of Sciences | Tyumentseva E.M.,East Siberian State Academy of Education
Geography and Natural Resources | Year: 2010

We examine the contemporary denudation cycles in the steppes of Khakassia, including the phase of integration of matter in the system and of the nival-proluvial removal, and the deflation phase of long-range transport of matter from the Minusinskaya depression. The cartographic model for the contemporary functioning of denudation systems is presented. © 2010.


Bukreev D.A.,East Siberian State Academy of Education | Moiseev A.A.,East Siberian State Academy of Education | Derevyanko M.S.,East Siberian State Academy of Education | Semirov A.V.,East Siberian State Academy of Education
Russian Physics Journal | Year: 2015

Effect of the temperature on the high-frequency electric impedance of amorphous soft magnetic cobalt-based wires is investigated. A high sensitivity of their impedance to the transition of the ferromagnetic state into the paramagnetic state is demonstrated. The temperature dependences of the impedance measured at different alternating current frequencies allow a distribution of the magnetic phases in the wire volume to be elucidated. © 2015, Springer Science+Business Media New York.


Kitov A.D.,Russian Academy of Sciences | Kovalenko S.N.,East Siberian State Academy of Education | Plyusnin V.M.,Russian Academy of Sciences | Suvorov E.G.,Russian Academy of Sciences
Environmental Earth Sciences | Year: 2015

The period of observations of glaciation of the Munku-Sardyk mountain massif in Siberia is one of the longest, i.e. 155 years. However, the data obtained are scattered and not systematic. The paper presents an integrated analysis of the materials collected since the first description by the explorer of Siberian mountains G.I. Radde Istoriy (1896) and extended by Peretolchin (1908) and Komarov (1953), as well as by glaciologists Maksimov (1965), Arefiev and Mukhametov (1996). The authors considered the current state of the glaciers and interaction of natural geosystems of the massif taking into account the nival-glacial processes. Since the beginning of the current millennium, regular observations have been conducted on the Munku-Sardyk massif by the V.B. Sochava Institute of Geography SB RAS, Limnological Institute SB RAS, and East-Siberian State Academy of Education. The studies revealed the leading landscape-forming factors and examined the landscape structure of the surroundings of the contemporary nival-glacial geosystems with due regard for the manifestations of altitudinal zonation. A medium-scale landscape-typological mapping was carried out. Presented are the quantitative parameters of the dynamics of the nival-glacial geosystems obtained on the basis of modern remote sensing instruments, GPS measurements and surface laser scanning using GIS analysis. The stump and stem of larch detected in the valley of the Bugovek River 300 m above the contemporary upper forest limit and 1330 m up the valley show that most likely there was no glaciation during the Atlantic period (7000–7300 years ago). The modern glacier complex has formed only during the last 4000–5000 years. The trend of shrinkage of glaciers since the end of the Little Ice Age can be traced, especially in recent years. The length and area of the open part of the glaciers have decreased by half (from 0.68 to 0.34 km2). The presence of small forms of glaciation on the southernmost limit of the Siberian glaciation 1500 m below the theoretical (climate) boundary suggests that this area can be considered a unique key site to identify trends in development of the mountain and nival-glacial geosystems, and provides an opportunity to built reconstructive and predictive models of development of mountain landscapes under the conditions of ever-increasing anthropogenic influence. © 2015, Springer-Verlag Berlin Heidelberg.


Ivanov E.N.,Russian Academy of Sciences | Plyusnin V.M.,Russian Academy of Sciences | Kitov A.D.,Russian Academy of Sciences | Kovalenko S.N.,East Siberian State Academy of Education | And 2 more authors.
Environmental Earth Sciences | Year: 2015

Glaciers in Lake Baikal Area were plotted on topographic and tourist maps, but often big perennial snow patches were designated as glaciers. A special study of these entities to classify them in one group or another was necessary. Recently published data of remote sensing (satellite images) of high resolution allow distinguishing a variety of snow and ice objects (accurate to 0.5 m). In identifying sustainable nival-glacial formations it was necessary to measure the characteristic parameters of these objects and their boundaries using topographic maps, satellite images, and GPS devices. The GIS project and the database of nival-glacial formations for the quantitative analysis of the accumulated information have been created. The glaciers of mountain ridges of East Siberia significantly reduced in thickness for the last decades, and their abrupt degradation is manifested in the last 5–10 years. The main glaciers of the Barguzinskiy ridge decreases with 0.002 km2 year−1 that is comparable with the reduction rate of the glaciers of the Eastern Sayan ridge, but is less than of the representative of the Kodar ridge the Azarovoy glacier. © 2015, Springer-Verlag Berlin Heidelberg.

Loading East Siberian State Academy of Education collaborators
Loading East Siberian State Academy of Education collaborators