[Dynamics of clinical and laboratory parameters in patients with severe ischemic stroke of hemispheric localization and different variants of nutrition support].

We studied an effect of different nutrition algorithms on the outcome of neurological symptoms and laboratory data in patients with ischemic stroke. The active nutrition support included in the basic therapy from the beginning of the disease has a positive effect on the patient's state. The mixed artificial nutrition (enteral + intravenous) was more effective compared to the intravenous or enteral nutrition alone in improving the clinical state, shortening the duration of staying in intensive care wards and complete compensation of disturbances of protein and energy metabolism during the first day of disease.

[The characteristics of the migration processes in the Astrakhan region].

The study of the migration processes in the Astrakhan Oblast was carried out in 2006. The gender and age-specific structure of migrants was analyzed as well as their social status and settling in the region. It was revealed that having high mortality rate and low fertility rate as a background the migration increase no longer compensates the natural population losses.

[The composition of the chitinolytic microbial complex and its effect on chitin decomposition at various humidity levels].

The dynamics of assimilation of chitin by soil microorganisms (primarily prokaryotes) as a source of carbon and nitrogen has been determined by gas chromatography and fluorescence microscopy. The highest rates of chitin decomposition in chernozem were detected at humidity levels corresponding to the pressure of soil moisture (P) of -1.4 atm.

[The characteristics of the demographic processes in Astrakhan oblast].

In the Astrakhan oblast, the study of the demographic processes from 1986 to 2005 was performed. The unfavorable demographic conditions was revealed which characterized by the decrease of numbers of children, the increase of the population of pensionable age, increase of mortality rate, formation of the negative natality rate and the decrease of the average life expectancy. The data analysis permits to forecast, in the case of unchangeable conditions, the decrease of total number of population in the nearest 10-15 years to come.

[Microbial transformation of chitin in soil under anaerobic conditions].

Anaerobic chitinolytic complex was studied in three soil types: chernozem, gray forest soil, and chestnut soil. The abundance and biomass of anaerobic chitinolytic microbial complex of fungi, bacteria, and actinomycetes were evaluated by luminescent microscopy. The dynamics of methane emission from soil during chitinolytic succession was studied by gas chromatography.