[Toxicological evaluation of the outgassing of tetrafluoroethylene-based thermostable polymeric materials during heating].

The purpose of this study was to investigate the composition and toxicity of fluoroplastic F-40 thermodestruction products at 300-500 degrees C and to identify the maximally allowable temperature for their safe use. When heated over 400 degrees C, the products of luoroplastic F-40 evolution included such compounds as hydrogen fluoride, fluro-organic compounds, carbon monoxide, formaldehyde. When heated at 500 degrees C, the thermodestruction products caused the highest mortality rate of mice.

[Biochemical indices of the healthy human being in a hermetic chamber with periodically ionized air].

The content of 11-hydroxycorticosteroids, triglycerides and enzyme activity in blood as well as the content of 17-ketosteroids in urine of normal men kept for 16 days in an enclosure ventilated for 24--60 hours with bipolar ionized air (averaged unipolarity factor 1.58, concentration of positive ions 26--35 thous. cm-(3)) were measured.

[Reactions of the adrenal cortex to immobilization stress in intact animals and against a background of hypokinesia].

Morphological investigation of the rat adrenal cortex and corticosterone contents in the blood plasma demonstrated certain peculiarities in the adrenal reaction to the primary and repeated immobilization stress in intact animals and after hypokinesia. It has been stated that morphological manifestation to an acute stress reaction kinesia is less pronounced than at an analogous single effect. Investigation on corticosterone content in blood plasma revealed certain functional peculiarities in the adrenal cortex reactions in different variants of the experiments.