[Hygienic characteristics of work conditions for main occupations in asbestos cement production of Ukraine].

Studies covered of work conditions for main occupations in asbestos cement production of Ukraine. Studies covered work conditions and occupational features of workers engaged into main occupations in asbestos cement enterprises of Ukraine. Parameters presented characterize ambient air state, microclimate conditions, levels of noise and vibration, work intensity and hardness.

[Characteristics of combined effect of thermal and welding aerosol exposure].

While studying a concurrent exposure to thermal loads and welding aerosols (WA) it has been ascertained that in inhalational exposure of the body to WA under conditions of simultaneous exposure of animals to a high temperature of the air environment the total pathogenic effect tends to be higher and higher. It is suggested that in a concomitant exposure to the above factors WA might lower bodily resistance to the thermal load. The above factors produce summation type harmful effects which have clearly a dose-dependent character.

[Lipid metabolism, iron metabolic indices and the rates of aging in welders with occupational diseases of the respiratory organs].

A study was made of relationship between biologic age of welders and their health status. The results obtained suggest that evolution of occupational abnormalities of bronchipulmonary system may accelerate the welders' rate of aging two-fold. Accumulation of iron in the organism of welders furthers the process of ageing as well.

[A hygienic evaluation of a filter-ventilation installation from the Kemper firm for purifying the air in metal arc welding].

It was found that "Kemper" devices absorb efficiently noxious substances released during arc welding of metals. Conditions for maximum efficiency of the "Kemper" devices are described.