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Kruglyak Y.A.,Odessa State Environmental University
Russian Journal of Physical Chemistry A | Year: 2014

General problems of electronic conductivity, reasons for a current flow, the role of electrochemical potentials, Fermi functions, the Fermi window for conduction, the elastic resistor model, different electron transport regimes, conduction modes, and transmission coefficients are discussed in terms of the "bottom-up" approach to nanoelectronics. The generalized model of electron transport in the linear response regime developed by R. Landauer, S. Datta, and M. Lundstrom, which can be applied to conductors of any size, scale, and arbitrary dispersion in the ballistic, quasi-ballistic, or diffusive regimes is described. © 2014 Pleiades Publishing, Ltd. Source

Svinarenko A.A.,Odessa State Environmental University
Journal of Physics: Conference Series | Year: 2014

Theoretical studies of Rydberg autoionization resonances in spectra of lanthanides atoms (ytterbium) are carried out within the relativistic many-body perturbation theory in the generalized relativistic energy approach (Gell-Mann and Low S-matrix formalism). The accurate theoretical results on the autoionization 4f13[2F7/2]6s2np[5/2]2, 4f13 [2F7/2] 6s2nf[5/2]2resonances energies and widths are presented and compared with experimental data, obtained by using laser polarization spectroscopy method. © Published under licence by IOP Publishing Ltd. Source

Fonari M.S.,Moldova Academy of Sciences | Ganin E.V.,Odessa State Environmental University | Vologzhanina A.V.,RAS Nesmeyanov Institute of Organoelement Compounds | Antipin M.Y.,RAS Nesmeyanov Institute of Organoelement Compounds | Kravtsov V.C.,Moldova Academy of Sciences
Crystal Growth and Design | Year: 2010

Interaction of mefenamic acid [2-(2,3-dimethylphenyl)aminobenzoic acid, maH] with piperazine (ppz), 1,4,7,10-tetraazacyclododecane (cyclen), meso-5,7,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane (teta), and tris(hydroxymethyl)aminomethane (tris) resulted in crystalline proton-transfer complexes of the compositions (ppzH2)(ma)2·4H 2O 1, (cyclenH2)(ma)2·2H2O 2, (tetaH2)(ma)2·2H2O 3, and (trisH)(ma)·H2O 4. Immediate cation-anion hydrogen bonds and those mediated by water molecules are the prime driving forces for the maH and amine assembly. Persistent CH⋯π interactions involving the aromatic rings were found to play an important role in the formation of final structures. All complexes reveal the pronounced segregation of hydrophilic and hydrophobic regions. © 2010 American Chemical Society. Source

Eoogeyae Y.A.,Odessa State Environmental University
Nanosistemi, Nanomateriali, Nanotehnologii | Year: 2015

Based on the Landauer-Datta-Lundstrom transport model, the generalized model of heat transfer by phonons is formulated. Similarly to the Fermi window for electron conductivity, the concept of the Fermi window for phonon conductivity is introduced and used to obtain the general expression for the lattice thermal conductivity with the quantum of thermal conductance appearing at the very beginning. There are emphasized the similarity and differences in the construction of the theory of electron conductivity and the theory of heat conduction. There are discussed the thermal conductivity of the conductors, the physical sense of proportionality between the thermal conductivity and the specific heat capacity at constant volume, the relationship between the transmission coefficient and the mean-free-path, the calculation of the number of phonon modes and density of phonon states, the Debye model of heat conductivity and scattering of phonons, the temperature dependence of the lattice thermal conductivity, the difference between the lattice thermal conductivity and electron conduction, and quantization of thermal conductivity. Source

Katerusha O.,Odessa State Environmental University | Matzarakis A.,Albert Ludwigs University of Freiburg
Geografiska Annaler, Series A: Physical Geography | Year: 2015

Climate is a main component of nature that, in addition to being a valuable resource, determines the possibility of development of tourism. Apparently, climate and its characteristics determine touristic demand. Choosing a place for vacation or recreation, tourists primarily prefer an optimal climate and weather conditions. Human-biometeorological resources characterize the connection of climate with a thermal state and health of humans, peculiarities of recreation and health evaluation of the environment. In order to distinguish thermal bioclimate, the physiologically equivalent temperature is used, based on the various meteorological parameters (air temperature, relative humidity, wind speed and radiation) that reflect the human conditions and the thermal comfort perception. In addition for the analysis of the climatic tourism potential, the Climate-Transfer/Tourism-Information Scheme was applied. The results can be useful for tourists in order to determine the best time to take a vacation based on their recreational activity such as sports, medical, health (thalassotherapy, heliotherapy, balneology etc.) according to bioclimatic conditions and their own preferences. © 2015 Swedish Society for Anthropology and Geograph. Source

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