Assessment of the tritium distribution in the vegetation cover in the areas of underground nuclear explosions at the Semipalatinsk test site.

This paper provides results of assessment of the tritium distribution in the vegetation cover in the areas of underground nuclear explosions at the Semipalatinsk Test Site (STS). The research was conducted at the former "Degelen" test site along the streams that are one of the main channels of tritium migration from underground nuclear explosions epicenters. The dominant plant species Carex supine and Achnatherum splendens that belong to different ecological groups in relation to humidity were selected as representatives of the vegetation cover.

Transfer of tritium into laying hen's meat and eggs at prolonged intake with atmospheric air, water and grass meal.

Following a continuous intake of tritium (T) by laying hens' over a 55 day period, an increase of НТО concentration both in eggs and meat was observed over the first 2 weeks for intakes via inhalation and ingestion of water and grass meal. After this time, equilibrium of the T in these products occurred. It was found that when the intake of HTO is from water, air and grass meal, the ratio of its activity concentration in muscular tissue to that in eggs does not exceed 1, 4, and 6 respectively.

[Microbial antagonism and rationale for the use of probiotics in combined therapy of Helicobacter pylori-related diseases].

This review discusses methods of Helicobacter pylori (HP) eradication, causes and consequences of its steadily growing resistance to therapy recommended by Maastricht Consensus (2005) and alternative treatment schemes including "reserved" antibacterial preparations. Different approaches to the solution of this problem are recommended, such as the use of phenomenon of microbial antagonism between endosymbiotic microorgnisms (bifido- and lactobacteria) and opportunistic and pathogenic microflora, e.g.

[Hemoaggregation dynamics in human-operator during percutaneous laser blood irradiation].

The experiment with essentially healthy male subjects no older than 50 involved functional load testing and irradiation by a low-energy helium-neon laser according to the standard therapeutic regimen (0.2 ml/V/ 30 min/10 sessions). Biomedical evaluation of hemoaggregation was made by 30 parameters of a multifunctional diagnostic system characterizing three blood aggregation levels: rheological (biophysical), coagulolytic (biochemical) and system (mathematical).

[Stress effect on the blood aggregate state].

Pathologies of the blood aggregate state (BAS) as a factor of risk of thromboses and hemorrhages in military pilots constitute the pressing problem of aviation medicine. To study effects of aviation stress on BAS, the following eight models of high-altitude flights were tested: (I) infringed 14-hr flight day (Razinkin model of fatigue), (II) static fight loading, (III) heavy dynamic physical loading, (IV) submaximal dynamic physical loading, (V) complex of submaximal dynamic physical loading, (VI) hyperthermia, (VII) dynamic g-loads during centrifugation, and (VIII) extended altitude hypoxia. The experiments involved 61 essentially healthy males up to 50 years of age who did not take protective pharmaceuticals.