Yekaterinburg, Russia

Ural State Pedagogical University

www.uspu.ru
Yekaterinburg, Russia
SEARCH FILTERS
Time filter
Source Type

Bodryakov V.Y.,Ural State Pedagogical University
Inorganic Materials | Year: 2015

The correlation between the volume expansivity β(T) and heat capacity C(T) of a solid inert gas (Xe) is analyzed in detail. It is shown that there is a clear β(C) correlation not only at low temperatures, where it is linear and known as Grüneisen's law, but also in a considerably broader temperature range, up to the melting point of xenon. A significant deviation from the low-temperature linear behavior of β(C) occurs when the heat capacity reaches 3R, the classical Dulong-Petit limit. © 2015 Pleiades Publishing, Ltd.


Melchakov Y.L.,Ural State Pedagogical University
Geochemistry International | Year: 2012

The study presents data on the annual transport of 72 elements through evapotranspiration calculated for two mid-elevation mountain landscapes of the Northern Urals. It was found that the main characteristics of element transport in the mountain-taiga and subalpine belts are controlled by combined ecological and geochemical factors. A mechanism is described for changes in some environmental parameters through the air-borne migration of evapotranspiration products. © 2012 Pleiades Publishing, Ltd.


Bodryakov V.Y.,Ural State Pedagogical University
High Temperature | Year: 2016

Following the course of previously published series, this work studies in detail the correlation of the volumetric thermal expansion coefficient β(T) and the heat capacity C(T) of refractory tantalum. It is demonstrated that a clear correlation β(C) takes place in the lower temperature range and remains up to the metal melting point inclusively. Significant deviation from lower temperature linear behavior of the β(C) dependence occurs when the heat capacity reaches the classical 3R Dulong–Petit limit. The temperature dependence of differential Grüneisen parameter γ' ~ (∂β/∂С) is estimated. © 2016, Pleiades Publishing, Ltd.


By the example of molybdenum, the detailed correlation investigation between the volume thermal expansion coefficient, o(T), and the heat capacity, C(T), of the refractory metal is carried out. It is shown that distinct correlation of o(C) takes place not only within the low temperature region where it is linear and is known as the Grüneisen law but also within a much wider temperature region, up to the melting point of the metal. Essential deviation of the o(C) dependency from the low temperature linear behavior takes place when the heat capacity achieves its classical Dulong and Petit limit, 3R. © 2014, Pleiades Publishing, Ltd.


Vasyagina N.N.,Ural State Pedagogical University
Middle East African Journal of Ophthalmology | Year: 2013

The article reveals the authors' view implying that the socio-cultural environment in society is determinant for the value-semantic content of motherhood; at that, the main semantic unit of modern Russian socio-cultural environment is urban conditions, reflecting specific features of social consciousness of postindustrial information era. The results of pilot research and surveys showed that the main differentiating feature determining the ideological contents of mothers, value-semantic aspects of motherhood, stereotypes of consciousness and behavior shared by the subjects with different cultural traditions, is not that much the ethnicity and social status of the mother but the urbanization level of the city community in which she resides. Values and behavior models fixed in a socio-cultural environment being refracted through the specificity of a concrete family and first of all though the prism of the woman's employment, are reflected in specific features and conditions of family education and relations between the mother and the child. © IDOSI Publications, 2013.


In continuing the series of publications started by the article about molybdenum, a detailed study of the correlation between the volume thermal expansion coefficient, ο(T), and the heat capacity, C(T), of another refractory metal, tungsten, is carried out. It is shown that a distinct correlation of ο(C) takes place not only at low temperatures, where it is linear and is known as the Grüneisen law, but also within a much wider temperature region, up to the melting point of the metal. A significant deviation from the low-temperature behavior of the linear dependence of ο(C) occurs when the heat capacity reaches its classical Dulong and Petit limit, 3R. The concept of the temperature dependence of the differential Grüneisen parameter, γ′ ∼ (∂ο/∂C) is introduced, and its evaluation is proposed. © 2015, Pleiades Publishing, Ltd.


Bodryakov V.Y.,Ural State Pedagogical University
Physics of the Solid State | Year: 2014

A detailed analysis of the correlation between the volumetric thermal expansion coefficient o(T) and heat capacity C(T) of a rare-gas (Ar) cryocrystal has been performed. It has been shown that there is a clear correlation dependence o(C) not only in the low-temperature range, where it is linear and known as the Grüneisen law, but also in a significantly wider temperature range (up to the melting point of argon). The dependence o(C) substantially deviates from the low-temperature linear behavior when the heat capacity reaches the classical Dulong-Petit limit of 3R. © 2014, Pleiades Publishing, Ltd.


Bodryakov V.Y.,Ural State Pedagogical University
Technical Physics | Year: 2013

The behavior of the heat capacity and thermal expansion of solid xenon (crystals of a rare gas) is studied in the range of elevated temperatures. It is found that the relative width of the premelting zone for xenon exceeds that for other solids. The Xe premelting parameters are estimated using the single-vacancy model. The results of this study explain the known difficulties encountered in the description of thermodynamic properties of solid inert gases using simple model potentials of the interatomic interaction of the Lennard-Jones type by the fact that premelting effects are not taken into account correctly. © 2013 Pleiades Publishing, Ltd.


Bodryakov V.Y.,Ural State Pedagogical University
Technical Physics | Year: 2015

Correlation dependence of volumetric thermal expansion coefficient o(T) on heat capacity C(T) for single-crystal krypton is studied. It is shown that the dependence o(C) is observed not only at low temperatures, where it is linear and is known as the Grüneisen law, but also in a much wider temperature range up to the melting point of krypton. When the specific heat reaches a classical limit of 3R (according to the Dulong-Petit law), the o(C) dependence considerably deviates from the low-temperature linear behavior. The concept of the differential Grüneisen parameter of krypton, γ′ ∼ (∂o/∂C), is introduced, and its temperature dependence is estimated. © 2015, Pleiades Publishing, Ltd.


Ryltsev R.E.,Ural State Pedagogical University | Son L.D.,Ural State Pedagogical University
Journal of Experimental and Theoretical Physics | Year: 2010

A general statistical model is proposed for describing network-forming systems. The model is based on the representation of the partition function for all possible configurations of a thermoreversible network in the form of a functional integral over a scalar field. According to this model, two types of first-order phase transitions can occur in the systems under consideration: macroscopic phase separation with the structural phase transition due to the change in the configuration of the spatial network and the sol-gel transition due to the formation of a thermoreversible percolation cluster consisting of bound structural units. A detailed analysis is performed of the thermodynamic and structural properties of a solution of monomers that have f functional groups and can form thermoreversible chemical bonds. The influence of specific features of the chemical and volume interactions on the phase diagram of the system is investigated. The mutual position of the sol-gel transition line and the phase diagram is determined for different model parameters. It is revealed that two substantially different regimes of the behavior of the sol-gel transition line in the "temperature-volume fraction of structural units" plane are observed with a change in the rigidity of chemical bonds. © 2010 Pleiades Publishing, Ltd.

Loading Ural State Pedagogical University collaborators
Loading Ural State Pedagogical University collaborators