Anisotropy (optical, electrical and thermal conductivity) in thin polarizing films for UV/Vis regions of spectrum: Experimental and theoretical investigations.

In the present work, the quantum theoretical calculations of the molecular structures of the three newly synthesized azomethine dyes: have been predicted using Density Functional Theory (DFT) in solvent dimethylformamide (DMF). The geometries of the azomethine dyes were optimized using the PBE1PBE/6-31+G level of the theory. In addition, the electronic spectra of these compounds in solvent DMF were carried out using the TDPBE1PBE, TDPBEPBE, TDB3LYP methods with 6-31G, 6-31+G, 6-31+G*, 6-31++G* basis sets.

Spatially valid data of atmospheric deposition of heavy metals and nitrogen derived by moss surveys for pollution risk assessments of ecosystems.

For analysing element input into ecosystems and associated risks due to atmospheric deposition, element concentrations in moss provide complementary and time-integrated data at high spatial resolution every 5 years since 1990. The paper reviews (1) minimum sample sizes needed for reliable, statistical estimation of mean values at four different spatial scales (European and national level as well as landscape-specific level covering Europe and single countries); (2) trends of heavy metal (HM) and nitrogen (N) concentrations in moss in Europe (1990-2010); (3) correlations between concentrations of HM in moss and soil specimens collected across Norway (1990-2010); and (4) canopy drip-induced site-specific variation of N concentration in moss sampled in seven European countries (1990-2013). While the minimum sample sizes on the European and national level were achieved without exception, for some ecological land classes and elements, the coverage with sampling sites should be improved.

Heavy metal and nitrogen concentrations in mosses are declining across Europe whilst some "hotspots" remain in 2010.

In recent decades, naturally growing mosses have been used successfully as biomonitors of atmospheric deposition of heavy metals and nitrogen. Since 1990, the European moss survey has been repeated at five-yearly intervals. In 2010, the lowest concentrations of metals and nitrogen in mosses were generally found in northern Europe, whereas the highest concentrations were observed in (south-)eastern Europe for metals and the central belt for nitrogen.

Analysis and critical review of the development of bioethics in Belarus.

The main trends of the bioethics development in Belarus have been analyzed on the basis of the materials collected by the Ethics Documentation Center (ISEU, Minsk, Belarus). A critical review of the most important publications in the field since 2000 suggests that development of bioethics in Belarus has occurred in two parallel directions distantly connected to each other: a theoretical direction and a practical one. Despite there are objective and subjective reasons for introducing bioethics in Belarus as an institutionally-organized system based on liberal values such as individual rights and freedom, a range of essential problems could be identified.

Retrospective cohort study of cancer mortality at the Minsk Leather Tannery.

The cohort of 768 workers who were actively employed for a minimum of 6 months and died was retrospectively followed from 1 January 1953 to 31 December 2000. There were 328 women and 440 men observed. Proportionate mortality ratios (PMRs) were calculated using the Minsk-city population mortality proportions to generate expected numbers.

Crystallization and preliminary crystallographic analysis of human glycosylated haemoglobin.

Human glycosylated haemoglobin A1C is a stable minor variant formed in vivo by post-translational modification of the main form of haemoglobin by glucose. Crystals of oxyHbA1C were obtained using the hanging-drop vapour-diffusion method and PEG as precipitant. The diffraction pattern of the crystal extends to a resolution of 2.

1,8-Anilinonaphthalene sulfonate binds to central cavity of human hemoglobin.

Binding of 1,8-anilinonaphthalene sulfonate (1,8-ANS) to main (HbA(1)) and glycosylated (HbA(1C)) forms of human oxyhemoglobin in the presence/absence of inositolhexaphosphate (IHP) in 50 mM potassium phosphate buffer, pH 7.4, was studied by time-correlated single photon counter with subnanosecond time resolution. The redistribution of contributions of the most long-lived and the most short-lived fluorescent decay components in the presence of IHP provides an evidence of the probe binding within oxyhemoglobin central cavity, namely DPG-binding site.

Proportionate cancer mortality among workers in the Belarussian tanning industry.

Background: The tanning industry involves many occupational exposures. This study evaluates proportionate cancer mortality among workers employed in the Belarussian tanning plant in Minsk.

Methods: A total of 768 workers with seniority of not less than 6 months who were hired after January 1, 1953 and died before December 31, 2000 was investigated.

The effect of low doses of gamma irradiation on the homeostasis of intracellular calcium in lymphocyte cells of rats.

The influence of acute and chronic gamma irradiation (0.25 and 0.5 Gy doses) on rat lymphocytes was examined on the 1st and 10th days after irradiation.

Flow cytometric determination of HPRT-variants in human peripheral blood lymphocytes.

Hypoxanthine guanine phosphoribosyl transferase (HPRT) deficient human peripheral blood lymphocytes are usually enumerated either by the cloning assay or by the autoradiographic short-term assay. The short-term approach presented here is based on flow cytometric (FCM) scoring of 6-thioguanine (6-TG) resistant lymphocytes. HPRT-variants are enumerated on the basis of both DNA synthesis (by use of immunofluorescent detection of incorporated 5-bromo-2-deoxyuridine, BrdU) and total DNA content (by propidium iodide (PI) incorporation) of proliferating cells, i.

[The effect of small doses of ionizing radiation on the physico-chemical characteristics of the membranes of peripheral blood lymphocytes of rats].

The fluorescence probe method was used for investigating the physical state of a total lipid phase of a bi-layer and an annular (near-protein) zone of the membrane lipids of lymphocytes in a peripheral blood of rats on the 10th day after a whole-body acute and chronic gamma-exposure to doses of 0.25, 0.5, and 1.