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Gajevskiy V.R.,National University of Water management and Nature resources use
Ukrainian Journal of Physics | Year: 2015

The system CO2 + H2O with the concentration of free carbon dioxide varying from those close to the saturation one to the equilibrium one under environmental conditions has been studied. The dependences of ionic component concentrations on the solution pH are determined. Simultaneous measurements of the electric conductivity and the pH of the solution show that the contributions of ionic components in the carbonate-water system to the electric conductivity of the solution are additive and satisfy the Kohlrausch law with an error not exceeding ±0.5%. © V.R. GAJEVSKIY , 2015. Source


Kachan N.S.,National University of Water management and Nature resources use
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu | Year: 2015

Purpose: To create the assessment method of synergistic effect from impact of factors on the state and the dynamic changes in the structure of water economy system of Ukraine (WESU), using an integrated sustainable water use index (ISWUI). To analyze the synergistic effect that arose under the influence of factors for the period 2010-2012. Methodology: Theoretical and methodological basis of the research composed by concepts that are based on the most commonly used in the economic analysis methods of empirical and theoretical research. The system-structural and synergistic methodological approaches became the most relevant in the research. They led to consider WESU as a complicated system, identifying the individual elements and defining relationships between them. The factual basis of the research became the primary data of statistical monitoring of water resources, data of major economic indicators in the regions of Ukraine, indicators of providing public with water, data of medical statistics of health and morbidity of population, that directly or implicitly depend on water pollution. Findings: The feasibility of using a synergistic approach for assessment of the effect, caused by managing of changes in the structure of WESU in regions, was proved. Own interpretation of the concept of "synergistic effect in water economy system" was posted basing on the definition of other scientists. The parameters for evaluating the synergistic effect, created by influence of factors on changes in WESU, were systematized. The way of synergetic effect assessment was formalized and his calculation for the period from 2010 to 2012 in the regions of Ukraine was made. The results were analyzed and the recommendations on the feasibility of using the proposed method were given in order to improve the managing of changes in the structure of WESU. Originality: For the first time, a comprehensive method of assessing the situation in WESU was presented considering various aspects of the industry. A method of synergistic effect assessment was firstly developed based on the synergetic approach that arises in the dynamics under the influence of factors caused by natural and anthropogenic changes. Practical value: The method of assessment of synergistic effect created by managing the changes in WESU from ISWUI is simple, versatile and ensures the reliability of the results. The method can serve as a tool in the management of water economy system of any regional level. Source


Moroz M.V.,National University of Water management and Nature resources use | Prokhorenko M.V.,Lviv Polytechnic
Russian Journal of Physical Chemistry A | Year: 2014

The emf (ε) dependence of C|Ag|AgI|glass Ag2GeS 3|D|C galvanic elements on temperature is studied in the range of 470 to 575 K (C represents current electrodes, D denotes equilibrium three-phase alloys of individual Ag-Sb-Se systems, and AgI|glass Ag2GeS 3 is a bilayer membrane with purely ionic (Ag+) electroconductivity). Analytical equations ε = ε(T) are used to calculate the thermodynamic functions of saturated solid solutions of the AgSbSe2, Sb2Se3, and Ag2Se phases of the Ag-Sb-Se system in the standard state. © 2014 Pleiades Publishing, Ltd. Source


Moroz M.V.,National University of Water management and Nature resources use | Prokhorenko M.V.,Lviv Polytechnic
Inorganic Materials | Year: 2015

The emf (E) of Ag | AgI | Ag2GeS3 glass | D galvanic cells (where Ag and D are the electrodes of the cell, D is a three- or four-phase equilibrium alloy of the Ag-Pb-Se-Te system, and AgI | Ag2GeS3 glass is a bilayer membrane with purely ionic (Ag+) conductivity) was measured as a function of temperature in the range 520-575 K. The E(T) data were used to calculate the thermodynamic functions of saturated solid solutions in the PbSe-PbTe section of the Ag-Pb-Se-Te system. The observed breaks in the composition dependences of Δf G 298 0, Δf H 298 0, and TΔr S 298 0 and the change in the sign of TΔr S 298 0 in the range PbSe0.7Te0.3-PbSe0.73Te0.27 are interpreted as evidence for the formation of an intermediate berthollide phase. © 2015 Pleiades Publishing, Ltd. Source


Karpovich I.N.,National University of Water management and Nature resources use
Surface Engineering and Applied Electrochemistry | Year: 2015

The viscosity of a thin liquid layer between ice and a surface of quartz was estimated based on data on the displacement rate of a column of ice inside cylindrical capillaries affected by a nonuniform electric field. © 2015, Allerton Press, Inc. Source

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