Institution
Uzhhorod National University
Education•Uzhhorod, Ukraine•
About: Uzhhorod National University is a education organization based out in Uzhhorod, Ukraine. It is known for research contribution in the topics: Raman spectroscopy & Laser. The organization has 1089 authors who have published 1056 publications receiving 5187 citations. The organization is also known as: State Higher Education Establishment "Uzhhorod National University" & Uzhhorod State University.
Topics: Raman spectroscopy, Laser, Absorption edge, Population, Glow discharge
Papers published on a yearly basis
Papers
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TL;DR: Energy dependences of experimental isomeric yields ratios and reaction cross-sections have been obtained and experimental results are compared with TALYS-1.2 calculations.
Abstract: Isomeric state excitation in the 120Te(γ,n)119m,gTe reaction within the 10–20 MeV energy range has been studied with bremsstrahlung beams. Energy dependences of experimental isomeric yields ratios and reaction cross-sections have been obtained. Experimental results are compared with TALYS-1.2 calculations.
4 citations
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TL;DR: A new, fast, simple, reliable, sensitive, and accurate method of the indirect UV-Vis-spectrophotometric determination of fluorides grounded on the interaction of fluoride with ion associate of Al(III), SAPH and AP with the utilization of vortex-assisted liquid-liquid microextraction (VALLME).
4 citations
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24 Jan 2020TL;DR: In this article, the authors studied the problem of representation of functions of this class by the product of two continued fractions, which is called a bicontinued fraction, and proved properties of Thiele reciprocal derivatives and regular C-fraction.
Abstract: Let function $$$u (z, w) = f (z) h (w)$$$ be defined on the compact set $$$\mathbf{K} \subset \mathbb{C}^2$$$. We study the problem of representation of functions of this class by the product of two continued fractions, which is called a bicontinued fraction. Some properties of Thiele reciprocal derivatives, Thiele continued fractions and regular C-fractions are proved. The possibility of representation of functions of this class by bicontinued fractions is shown. Examples are considered, domains of convergence and uniform convergence of obtained bicontinued fractions to the function are indicated.
4 citations
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TL;DR: Analysis of the relationship between non-alcoholic fatty liver disease and changes in the gut microbiota indicates that the development and severity of the course of the disease are not always associated with the physiological processes already known to us.
Abstract: Objective The aim: To analyze the relationship between non-alcoholic fatty liver disease and changes in the gut microbiota. Patients and methods Materials and methods: The publications of domestic and foreign editions in the databases of the United European Gastroenterology (UEG) Journal, PubMed, MEDLINE, Web of Science were processed and analyzed. Conclusion Conclusions: In recent years, non-alcoholic fatty liver disease was placed among the important diseases in gastroenterology. During this time, more and more data appear on the link between changes in the human intestinal microbiome and the development of metabolic diseases, including NAFLD. Contemporary research has indeed found evidence of such a relationship. Thus, some strains of microorganisms have been identified in more detail, which directly or indirectly affect the development or course of the above-mentioned disease. For a better understanding of the strategies for the treatment of pathologies, it is necessary to delve into the study of etiological factors, therefore, NAFLC cannot be considered a pathology that has been sufficiently studied. Indeed, recent data indicate that the development and severity of the course of the disease are not always associated with the physiological processes already known to us.
4 citations
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TL;DR: In this article, the electron, phonon, and thermoelectric properties of copper-based argyrodite-type ion-conducting crystals were analyzed in the framework of the density functional and Boltzmann transport theories.
Abstract: The promising class of the environment-friendly thermoelectrics is the copper-based argyrodite-type ion-conducting crystals exhibiting just extraordinary low thermal conductivity below the glass limit associated with the molten copper sublattice leading to a softening of phonon modes. To explain why the argyrodite structure containing copper ions favors the low thermal conductivity, we have utilized the ab initio calculations of the electron, phonon, and thermoelectric properties of Cu7PS6 crystal in the framework of the density functional and Boltzmann transport theories. To obtain the reliable thermoelectric properties of Cu7PS6, we take into account the dependence of the electron effective mass m* on the redundant carrier concentration n. We propose to use the Burstein-Moss effect for the calculation of the electron effective mass m* of a semiconductor. We have found the strong nonlinear character of copper atom vibrations in Cu7PS6 which exceeds substantially the similar values for phosphorous and sulfur atoms. The large vibration nonlinearity of the copper atoms found in Cu7PS6 explains the diffusion-like heat transfer and the relatively low coefficient of the lattice thermal conductivity (κ = 0.7 W/(m K)), which is favorable to achieve the large thermoelectric figure of merit.
4 citations
Authors
Showing all 1111 results
Name | H-index | Papers | Citations |
---|---|---|---|
Taras K. Oleksyk | 23 | 48 | 15988 |
Sergey Dub | 21 | 143 | 1571 |
Ihor Studenyak | 19 | 111 | 994 |
Alexander A. Grabar | 18 | 59 | 1044 |
Yu. M. Vysochanskii | 18 | 145 | 1305 |
Yulian M. Vysochanskii | 17 | 51 | 874 |
Yu. M. Azhniuk | 15 | 54 | 653 |
M. L. Trunov | 15 | 25 | 511 |
Yevhen Hotko | 14 | 21 | 1830 |
Denys I. Bondar | 13 | 102 | 614 |
Vasyl Sidey | 13 | 44 | 416 |
Roman Holomb | 13 | 39 | 775 |
A.V. Gomonnai | 13 | 25 | 361 |
V. V. Pan'ko | 12 | 26 | 331 |
Ivan Salamon | 12 | 71 | 590 |