Investigation of transfer coefficients for many-component dense systems of neutral and charged hard spheres

In present work a calculation of transfer coefficients for many-component dense gases for charged and non-charged hard spheres is carried out using the Enskog-Landau kinetic equation which takes into account realistic particle sizes.Comment: 4 pages, 2 eps-figure

Normal solution to the Enskog-Landau kinetic equation. Boundary conditions method

Nonstationary and nonequilibrium processes are considered on the basis of an Enskog-Landau kinetic equation using a boundary conditions method. A nonstationary solution of this equation is found in the pair collision approximation. This solution takes into account explicitly the influence of long-range interactions. New terms to the transport coefficients are identified. An application of the boundary conditions method to hydrodynamic description of fast processes is discussed.Comment: 11 LaTeX pages using Elsevier format elsart.st

Normal solution and transport coefficients to the Enskog-Landau kinetic equation for a two-component system of charged hard spheres. The Chapman-Enskog method

An Enskog-Landau kinetic equation for a many-component system of charged hard spheres is proposed. It has been obtained from the Liouville equation with modified boundary conditions by the method of nonequilibrium statistical operator. On the basis of this equation the normal solutions and transport coefficients such as bulk kappa and shear eta viscosities, thermal conductivity lambda, mutual diffusion D^{\alpha\beta} and thermal diffusion D_T^\alpha have been obtained for a binary mixture in the first approximation using the Chapman-Enskog method. Numerical calculations of all transport coefficients for mixtures Ar-Kr, Ar-Xe, Kr-Xe with different concentrations of compounds have been evaluated for the cases of absence and presence of long-range Coulomb interactions. The results are compared with those obtained from other theories and experiment.Comment: 24 LaTeX209 pages, 3 EPS figures (4 files). To be published in Physica

Development of the Greek Catholic Church in Independent Ukraine: Persons, Historical Heritage, and New Trends

The article analyzes historical features and tendencies of the development of the Ukrainian Greek Catholic Church (the UGCC) in the period of independence of Ukraine. It considers the prerequisites in which this church has begun its revival in the early 1990s after the official ban on church activity in the Soviet Union. Three stages of the development of the UGCC have been identified which correspond to the times of the various church leaders’ management. The first stage in the development of Greek Catholics corresponds to the time when the community was governed by Ivan-Myroslav Lyubachivsky. The main tasks of that phase was to restore and establish the functioning of this religious community in the traditional regions of their activity until the Soviet period. The second stage fell on Lyubomyr Husar’s chairmanship in the UGCC. The main purpose of that period was to bring the church to the all-Ukrainian level, and the main achievement became the transfer of the church management center from Lviv to Kyiv. Moreover, that stage was marked by a number of small splits within the church. The activity of such central groups as “kovpakivtsi” and “dognalivtsi” was especially noticeable. The third stage began with Lyubomyr Husar’s voluntary retirement for health reasons and the election of a new head of the UGCC, Svyatoslav Shevchuk. The main challenge for a young church leader is to grow the community taking into account the challenges of globalization, as well as to preserve the Greek Catholic identity. One of the issues of differentiation within the Ukrainian Uniate Church is the activity of three identification groups in its environment that perform cultic and ritual practices in different ways. Namely, there are Oriental, Oxidental, and all-Catholic groups

How Does Average Precipitation by Depth Affect the Crop Production Index?

This study examines the relationship between the average precipitation by depth measured in millimeters (mm) per year, and the crop production index for the years 2015 through 2020. The crop production index measures the total agricultural crop productions relative to the base time of 2014 to 2016, for countries around the world. This study uses regression analysis to examine this relationship. The regression studied 154 total observations for the total crop production for these regions. Contrary to conventional belief, this study found no statistical relationship between the average precipitation depth and the crop production index at any given level of significance

Thermo field hydrodynamic and kinetic equations of dense quantum nuclear systems

Basic equations of nonequilibrium thermo field dynamics of dense quantum systems are presented. A formulation of nonequilibrium thermo field dynamics has been performed using the nonequilibrium statistical operator method by D.N.Zubarev. Hydrodynamic equations have been obtained in thermo field representation. Two levels of the description of kinetics and hydrodynamics of a dense nuclear matter are considered. The first one is a quantum system with strongly coupled states, the second one is a quark-gluon plasma. Generalized transfer equations of a consistent description of kinetics and hydrodynamics have been obtained, as well as limiting cases are considered.Comment: 37 LaTeX2e pages, special sty-fil