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Pursky O.I.,Kyiv National University of Trade and Economics
Journal of Physical Studies | Year: 2015

The infiuence of molecular rotation on the volume dependence of thermal conductivity in liquid nitrogen was evaluated. A modified method of reduced coordinates has been used to calculate components of the isochoric heat capacity of liquid nitrogen. A difierence in the behavior of temperature dependences of the Bridgman coeficient at pre-crystallization temperatures in liquid Ar, CH4 and N2 is explained by the infiuence of rotational motion of molecules © 2015, Ivan Franko National University of Lviv. All rights reserved. Source


Sukhatskyi R.P.,Kyiv National University of Trade and Economics
CriMiCo 2013 - 2013 23rd International Crimean Conference Microwave and Telecommunication Technology, Conference Proceedings | Year: 2013

The present paper concerns the activity of Kyiv Polytechnic Institute in the area of preparation of scientific, production and technical personnel for the radioelectronic sphere. The Institute's role in the development of radioelectronics in Ukraine in 1950-1980's is determined on the basis of carried out study. © 2013 CriMiCo'2013 Organising Committee, CrSTC. Source


Sviderskyi V.,Kharkiv Polytechnic Institute | Karavayev T.,Kyiv National University of Trade and Economics
Chemistry and Chemical Technology | Year: 2013

The results of comprehensive researches of the physico-chemical properties of kaolins as extenders of water-dispersion paints are shown in the article. The results of RF-analysis, energy state estimation of researched kaolins surface with different content of nonclay components and index ordering of the crystal structure are analyzed. Quantitative IR-analysis of basic functional groups of kaolins surface has been conducted to estimate their reactivity. ©Sviderskyi V., Karavayev T., 2013. Source


Konstantinov V.A.,Ukrainian Academy of Sciences | Sagan V.V.,Ukrainian Academy of Sciences | Revyakin V.P.,Ukrainian Academy of Sciences | Karachevtseva A.V.,Ukrainian Academy of Sciences | Pursky O.I.,Kyiv National University of Trade and Economics
Central European Journal of Physics | Year: 2014

Thermal conductivity of solid cyclopentane C5H10 has been measured at isochoric conditions in the plastic phases I and II for samples of different densities. Isochoric thermal conductivity is nearly constant in phase II and increases with temperature in phase I. Such behaviour is attributed to weakening of the translational orientational coupling which, in turn, leads to a decrease of phonon scattering on rotational excitations. The experimental data are described in terms of a modified Debye model of thermal conductivity with allowance for heat transfer by both low-frequency phonons and diffusive modes. © 2014 Versita Warsaw and Springer-Verlag Wien. Source


Pyatnytska G.T.,Kyiv National University of Trade and Economics
Actual Problems of Economics | Year: 2013

The article carries out the analysis of current trends in the food retail development in Ukraine. Advantages and drawbacks in the establishment and development of large retail chains at the food commodities market are determined from the perspective of various market subjects. The most probable consequences of retail globalization are defined. Source

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