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Minsk, Belarus

International Sakharov Environmental University is a university in Minsk, Belarus.The university offers both undergraduate and graduate degrees. As on February, 2011 1,273 full time students were enrolled. Wikipedia.

Popoff E.H.,National Academy of Sciences of Belarus | Kapich A.N.,International Sakharov Environmental University
International Journal of Radiation Biology | Year: 2010

Purpose: The aims of this work were: (i) To compare the effects of ionising radiation (IR) on testosterone binding globulin (TeBG) characteristics (serum concentration, cooperativity of androgen binding and affinity for hormone) in divergent mammalian species; (ii) to couple radiation effects with probable TeBG-parameter changes; and (iii) to investigate the prevention of these changes by fungal preparations (in particular by lipid polyene complexes of Laetiporus sulphureus). Materials and methods: Characteristics of TeBG were investigated in microaliquots of rat and human serum samples using [3H]-5α- dihydrotestosterone ([3H]-DHT) radioligand assays after invivo exposures to IR (external γ-sources, incorporation of 131I-, 137Cs-radionuclides) at experimental and post-Chernobyl radioecological conditions (doses 0.252.2 Gy). Results: Species-specific changes of TeBG parameters were found depending on the type of IR, dose and time after irradiation. Specifically children living in radionuclide contaminated regions (near Chernobyl) were found to have a decrease of positive cooperativity for the TeBG-androgen binding, a drop of TeBG levels, and a decline in hormone affinity. Screening of natural substances (from phanerogams and fungi) detected that lipid polyene complexes of the basidiomycete L. sulphureus allowed recovery of the standard features of TeBG. Conclusions: IR induced a depletion of TeBG from blood simultaneously with species-specific changes of TeBG, which depend on the type of radiation, the dose of radiation (from 0.25 up to 2.2 Gy), and the time after radiation. The Hill coefficient of TeBG (indicating the degree of molecular cooperativity when hormone binding) appeared to be the most radiosensitive marker of the glycoprotein activity because of it is inversely to radiation dose. There are pharmacological possibilities to restore IR-induced "declines" of TeBG's affinity and cooperativity for androgen ligand binding. © 2010 Informa UK Ltd. Source

Pawlicki-Jullian N.,Laboratoire des Polysaccharides Microbiens et vegetaux | Courtois B.,Laboratoire des Polysaccharides Microbiens et vegetaux | Pillon M.,Laboratoire des Polysaccharides Microbiens et vegetaux | Lesur D.,French National Center for Scientific Research | And 4 more authors.
Research in Microbiology | Year: 2010

Nitrogen-fixing bacteria isolated from root nodules of Medicago plants growing in the 10 km zone around the Chernobyl nuclear power plant were screened for the production of new water-soluble acidic exopolysaccharides (EPSs). The different strains belonged to the Enteriobacteriaceae family (Enterobacter ludwigii, Raoultella terrigena, Klebsiella oxytoca), except for one which belonged to the Rhizobiaceae family (Sinorhizobium meliloti). All of the bacteria produced highly viscous EPS with an average molecular weight comprised between 1 × 106 and 3 × 106 Da. Five different compositions of EPS were characterized by physico-chemical analyses and 1H NMR spectroscopy: galactose/mannose (2/1), galactose/glucose (1/1), galactose/glucose/mannose (1/2/1), fucose/galactose/glucose (2/1/1) and fucose/galactose/glucose/mannose (2/2/1/1 or 1/1/2/4). Glucuronic acid, a charged monosaccharide, was also recovered in most of the different EPSs. © 2010 Elsevier Masson SAS. Source

Khasanov O.,National Academy of Sciences of Belarus | Smirnova T.,International Sakharov Environmental University | Fedotova O.,National Academy of Sciences of Belarus | Rusetsky G.,National Academy of Sciences of Belarus | Romanov O.,Belarusian State University
Applied Optics | Year: 2012

The nonlinear dynamics of a high-power femtosecond singular pulse in Kerr media are analyzed numerically upon optically induced ionization. We examine the plasma inertia impact to stable propagation of optical vortices. Multifoci behavior of vortices in medium are revealed. Next we numerically demonstrate that inertial character of plasma formation provides a quasi-soliton regime of vortex propagation resistant to symmetry-breaking perturbation. © 2012 Optical Society of America. Source

Kalinin M.,International Sakharov Environmental University
NATO Science for Peace and Security Series C: Environmental Security | Year: 2012

In 2008 the UNESCO International Hydrological Programme (IHP) introduced the map of transboundary aquifers. The map gives the general view where transboundary aquifer occur, unfortunately not all aquifers were identified. Further efforts are needed to extend the knowledge in this field. In the paper the main aquifers and aquifers systems in Belarus were charcterised. There are five main water pressurized systems in the national territory of Belarus that are widely used for the purpose of general water supply: Quaternary, Palaeogene, Albian-Cenomanian, Devonian and the Upper Proterozoic. Base on the available information the attempt to identify regions of transboundary groundwater flow occurrence were taken. Because of the lack of sufficient date in that field the detailed study of hydrogeological condition in indicated areas are recommended to achieve bilateral cooperation and sustainable use of aquifers. © Springer Science+Business Media Dordrecht 2012. Source

Bondarev S.L.,Minsk State Higher Radiotechnical College | Knyukshto V.N.,B. I. Stepanov Institute of Physics | Tikhomirov S.A.,B. I. Stepanov Institute of Physics | Buganov O.V.,B. I. Stepanov Institute of Physics | Pyrko A.N.,International Sakharov Environmental University
Optics and Spectroscopy (English translation of Optika i Spektroskopiya) | Year: 2012

Using methods of steady state luminescence and femtosecond spectroscopy, we have studied the mechanism of intramolecular proton transfer in synthesized 3,7-dihydroxy-2,8-di(4-methoxyphenyl)-4H,6H-pyrano[3,2-g]chromen-4,6-dion in polar and nonpolar solutions, films, and polycrystals at 293 and 77 K. In an excited singlet state, intramolecular proton transfer occurs in two stages. At the first stage, a tautomer with one transferred proton (OTP tautomer) is formed from the Franck-Condon state within τ1 = 0.6 ps. At the second stage, the second proton is transferred within τ2 = 3.1 ps and a tautomer with two transferred protons (TTP tautomer) is formed, which fluoresces in toluene at 293 K with a high quantum yield, Φf = 0.66, and the fluorescence spectrum of which is characterized by a large Stokes shift, 9900 cm-1. At 293 K, polar solvents (dimethylformamide, dimethyl sulfoxide, ethanol, etc.) solvate the BFV molecule in the ground state, while, in the excited state, an OTP tautomer is mainly formed. In polar ethanol at 77 K, a dual fluorescence spectrum is observed, which is caused by the fluorescence emission of polysolvates with λf max = 460 nm and TTP phototautomers at λf max = 610 nm. © Pleiades Publishing, Ltd., 2012. Source

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