Temperature dependencies of the refractive index for Al-Ga-In-As metamorphic layers.

Temperature dependencies of the refractive indices, , for and metamorphic layers with =0.06-0.25 have been determined.

[Specific Features of Radioactive Pollution of Soils of Catchment Areas of Lake Shablish (Distant Zone of the East Ural Radioactive Trace)].

Specific features of 90Sr and 137Cs distribution and accumulation in soil cuts of superaqueous and eluvial positions of catchment areas of Lake Shablish located in a distant zone of the East Ural radioactive trace are considered. Some physical and chemical characteristics of the soils were defined. It is established that the signs typical for the lake ecosystems of distant East-Ural radioactive trace zone which underwent impact of technogenic influence are common for soils of catchment areas of Lake Shablish.

[Accumulation and distribution of 137Cs and 90Sr radionuclides in the components of water-bottom sediments-macrophytes of Lake Malye Kirpichiky].

This research work is devoted to analyzing the processes of accumulation and distribution of long-lived radionuclides of 90Sr and 137Cs in the components of water-sediment-macrophytes of Lake Malye Kirpichiky (Chelyabinsk region). The characteristic features of redistribution of radioactive substances, depending on the texture of the bottom sediments of the lake and the species composition of aquatic vegetation are shown. Also shown is the total stock of radionuclides in water and bottom sediments.

[Content of natural uranium in the lichens and distribution of forms in the soil at the coastal area of Lakes Itkul and Sinara of Chelyabinsk region].

The distribution of natural uranium in soils superaquatic and transeluvial positions of the coastal landscape of lakes Itkul and Sinara, and liches on this site.The necessity of analysis of the content item in accordance with its form of occurrence in the natural environment. The peculiarities of the migration, accumulation and distribution of uranium in soils of the mountain areas of the watersheds of lakes Itkul and Sinara are found.

Mitochondria-targeted plastoquinone derivatives as tools to interrupt execution of the aging program. 2. Treatment of some ROS- and age-related diseases (heart arrhythmia, heart infarctions, kidney ischemia, and stroke).

Effects of 10-(6'-plastoquinonyl) decyltriphenylphosphonium (SkQ1) and 10-(6'-plastoquinonyl) decylrhodamine 19 (SkQR1) on rat models of H2O2- and ischemia-induced heart arrhythmia, heart infarction, kidney ischemia, and stroke have been studied ex vivo and in vivo. In all the models listed, SkQ1 and/or SkQR1 showed pronounced protective effect. Supplementation of food with extremely low SkQ1 amount (down to 0.

[Some regularities in the behavior of radionuclides in water of the lakes situated on the East-Urals Radioactive Trace].

The paper presents the summary and the analysis of the results from a long-term monitoring of 90Sr specific activity in water of the lentic lakes Uruskul, L. Ighish, Kuyanysh and Travyanoye situated in Chelyabinsk Oblast on the East-Urals Radioactive Trace which was formed due to the 1957 accident at the Mayak PA. The data of measurements conducted over a 50-year period were approximated based on a function representing a sum of two (or three) exponents.

[90Sr and 137Cs in higher aquatic plants of some water basins on the East-Urals Radioactive Trace: species features of radionuclide concentration].

The paper summarizes the results from radioecological studies of a number of water basins located on the East-Urals Radioactive Trace (EURT), as exemplified by the lakes Large Ighish, Small Ighish and Shablish which are included in the medium-distance and remote zone of the EURT. The lake Misyash which is situated in the opposite direction from the release vector and has been only contaminated due to global fallouts has been used as a control water basin. The current species composition of the high aquatic plants and species-specific concentration of 90Sr and 137Cs in them was studied, also, the radionuclide accumulation and discrimination coefficients were estimated.

[Migration characteristics and forms of 90Sr and 137Cs observed in the bottom sediments of certain lacustrine ecosystems on the East Urals Radioactive Trace].

The research findings summarized in the paper include data on the radioecological conditions in two lakes (Large Ighish and Small Ighish) located on the East Urals Radioactive Trace. The focus of the study was on the chemical composition of water and bottom sediments, as well as on the specific features of 90Sr and of 137Cs distribution and the forms in which they occur in silts. Coefficients of radionuclide accumulation in the bottom deposits of the lakes of interest were estimated.

[Current radioecological conditions of Malyĭ Igish lake located on the axial part of the East-Urals radioactive trace].

The paper presents data on the current radioecological situation at Lake Maly Igish located on the axial part of the East-Urals radioactive trace formed after the 1957 accident at the Mayak PA. The chemical composition of the water and bottom deposits, as well as the distribution of 90Sr, 137Cs, and of the microelements in the main components of the water reservoir were studied. The current species composition of higher aquatic plants and of the species-specific concentration of 90Sr and of 137Cs was identified.

[Current radiation status of the ecosystem of the Lake Bolshoi Igish situated along the axial part of the East-Urals radioactive trace].

Data on the current radioecological status of lake Bolshoi Igish in the Middle Ural are presented in the paper. The lake is situated on the central axis of the East-Urals radioactive trace which was formed as a result of the 1957 nuclear accident at the Mayak Production Association. The distribution of 90Sr and 137Cs in the major components of the water basin is shown.

Methionine enkephalin-induced changes in pigmentation of zebrafish (Cyprinidae, Brachydanio rerio) and related species and varieties, measured videodensitometrically. II. Pearl and gold danios.

In the fish Brachydanio albolineatus (pearl danio) MSH-induced darkening was similar to that of the B. rerio (zebrafish). However, they showed a greatly reduced response to methionine enkephalin (met-E) though these fish apparently have normal dermal melanophores.

Methionine enkephalin-induced changes in pigmentation of zebrafish (Cyprinidae, Brachydanio rerio) and related species and varieties, measured videodensitometrically. I. Zebrafish.

The ability of MSH and of methionine enkephalin (met-E) to induce dispersion of pigment granules was examined in melanophores and in xanthophores of the zebrafish Brachydanio rerio using the melanophore index (MI) and videodensitometry. Both methods gave similar results. In B.

Testosterone secretion of rat and mouse Leydig cells cultured at plates precoated with collagen taken from male and female rats.

Testosterone secretion by Leydig cells in vitro was significantly higher on male collagen coated, than on female collagen coated plates. The castration of male rat-donors of collagen demonstrated that 2 months of androgen deprivation eliminated the effect.