[Man-made radionuclides and their accumulation by plants of different taxonomic groups from the soils of the eastern ural radioactive trace].

Investigations of the spatial and vertical distribution of 90Sr, 137Cs and 239, 240Pu in the soils of the Eastern Ural Radioactive Trace (EURT) and accumulation of these radionuclides by plants were carried out in 2003-2011. Investigations showed that the spatial distribution of the radionuclides with increasing distances from the epicenter of the accident is satisfactorily approximated by the exponential function. During the post-accidental period the essential amount of radionuclides is located in the 15-20 cm root layer of the soil.

[Radioecological investigation of the soil cover of eastern Urals State radioactive reserve and neighboring areas].

The contamination levels and spatial distribution of 90Sr and 137Cs in the soil cover of the Eastern Ural State Radioactive Reserve and neighboring areas have been studied. Situated in the Chelyabinsk region, the Reserve embraces the frontal part of the Eastern Urals Radioactive Trace. This Trace emerged in 1957 as a result of the nuclear accident at the Production Association "Mayak".

[Plutonium at the ecosystems of impact zone the Beloyarsk NPP].

The distribution of the plutonium at the ecosystems of impact zone the Beloyarsk NPP was studied. Higher quantity of Pu (to 500 Bq/m2) was revealed in the bottom sediments of the Olkhovsk bog where low-level radioactive water of the Beloyarsk NPP have been discharged. The total amount of the radionuclide in a soil cover did not exceed 140 Bq/m2.

[Radioecological situation at the villages of the Techa river].

The Techa river was contaminated in 1949-1956 from the nuclear enterprise "Mayak". The investigations were carried out in flood plain of the Techa river in 1992-2001. 90Sr and 137Cs stores were calculated in the soil-vegetation cover.

[Disturbance of regional blood flow and activity of lipid peroxidation in recurrent ulcer and their drug correction].

Regional blood flow and intensity of free-radical lipid peroxidation were evaluated at rheogastrography and biochemically (quantitation of malonic dialdehyde and antioxidant serum activity), respectively, in 25 patients with recurrent ulcer. Recurrent ulcer is shown to induce disturbances in gastric wall regional hemodynamics due to activated vascular tone, reduced arterial blood inflow and venostasis. Lipid peroxidation became overactive and decreased defence potentialities of gastroduodenal serum.