[Effects of small ionizing radiation doses on hemato-encephalic barrier permeability].

Goal and objectives of the study was comparative description and establishment of dose-time dependence of changes in permeability of the hemato-encephalic barrier (HEB) in phylogenetically different parts of the brain cortex, i.e. new (Fr2 and Cg3), old (hippocampal fields CA1-CA4 and dentate fascia) and paleocortex (piriform cortex) following exposure to 0.

[Morphofunctional evaluation of different parts of the cerebral cortex after ionizing radiation exposure].

The investigation has the aim to compare reactions of phylogenetically different parts of the brain cortex to single and fractionated irradiation by 1 Gy. The focus is primarily laid on unveiling the morphological stage of radiation-induced changes in the cortex. A hundred of 100 nubilous male rats with the body mass of 200-230 g were subject to whole-body uniform single and fractionated gamma-irradiation (total dose absorption over 5 days) with MeV spectrum 1.

[Adaptive process in Vietnamese military pilots during the flights on modern Russian aircraft].

Study on health status of 156 Vietnamese military pilots on Russian modern jet planes (Su-22, Su-27, Su-30, MiG-21B). The results showed that unprofitable factors in working environment (acceleration, radiation, high temperature, humidity, noise) have an impact on the health of pilots during the flight, leading to deterioration of professional health and physiological functions (cardiovascular, respiratory and nervous system) and obesity of pilots after 35 years old. Basing on the studies, we suggested some measures for health protecting, safety of flight and prolonging flight-activity of pilots (training in decompression chamber, vestibular training) and balance in food ration for prevention of professional diseases.

[Investigation into microcirculation in the vascular bed of healthy people and patients at rest and during the LBNP test].

Computer capillaroscopy during the lower body pressure test (LBNP) provided additional information about the effects of orthostasis on blood microcirculation and separate estimation of blood velocity in arterial, intermediate and venous segments of capillaries. Microcirculation was demonstrated to be sensitive to the LBNP exposure as in healthy volunteered subjects, so in ischemic, including hypertensive, patients. The highest velocity of capillary blood and the lowest Kv were determined in ischemic patients including hypertensive, in whom venous velocity in capillaries prevailed over arterial (Kv < 1), whereas in healthy subjects Kv never fell below 1.

[Mathematical algorithm for evaluation of the human cardio-respiratory homeostatic function].

Mathematical algorithm of the cardiorespiratory homeostasis was determined by oxygen demand (VO2) and carbon dioxide production (VCO2) during maximal physical loading on the bicycle ergometer; calculated and measured parameters of the physical capacity were compared in experiments with long-term (110- to 240-d) isolation of human subjects. Aerobic capacity was evaluated during incremental physical testing in the sitting position on bicycle Elema-Siemens 380-B. The following parameters were measured: peak (maximal loading) heart rate (HRpeak) and VO2, work time, and VO2 at 15 points on the Borg load scale, total aerobic test time and some others.