Heat status was examined in machine open-cast mine extracting workers of Armenia to establish the prophylactic measures against overheating for optimal thermal status of the body. At the end of the working shift during the warm season machine workers showed the strain of heat status demonstrated the necessity of the additional 20 minutes rest after the 2nd trip during the warm season. Traditional drinks can be recommended to compensate for marked loss of moisture.
The main directions in the research and study of industrial microclimate are represented in the article. Evaluation of the microclimate based on thermophysiology, studies of correlation between the environmental temperature and the human functional status helped to establish the normal parameters, measures of the overheating and the overcooling prophylaxis. New data about the immediate and late effect of single microclimate parameters on the human functional status necessitate the creation of new methodic approaches to the evaluation and control of microclimate conditions.
Features of forming and course of ulnar nerve compression neuropathy in the cubital and Guyin's canals were studied in 86 subjects, suffering from occupational diseases of the arms due to vibration and functional overstrain. Compression neuropathy of the ulnar nerve aggravates the vibration disease and arm disorders caused by functional overstrain--increases frequency, intensity and duration of paroxysmal paleness of the IV-V fingers, aggravates paresthesia, hypalgesia and hypothermia of the ulnar antebrachium, markedly decrease power of the hand, which must be taken into account when solving exert problems and carrying out treatment and rehabilitation.
Integral parameter of professional capacity for work in day and night shifts were studied in 52 operators of heat electric power stations and compared with the results of sociopsychologic questioning. 19% of the operators having higher work capacity in the night shift than in the day one (according to integral parameter) were characterized by lower anxiety, better mood and sleep, and lesser fatigue during the night shift than 19% of examinees, whose night working capacity was lower in comparison with the day shift. The rest 62% of the operators showed a stable level of capacity for work during day and night shifts, their position according to the sociopsychologic parameters is intermediate.
Exposure doses of X-rays generated by video displays were measured by means of highly sensitive TLD-500K type detector based on thermoluminophore Al2O3 and DTG-4 type detector based on thermoluminophore LiF. Individual human doses and doses accumulated on the display's surface can be measured. Trials showed efficiency of the method to evaluate the efficacy of protective screens for reducing the irradiation exposure.
Isolated pacemaker of the frog's heart served as a sensitive model to study the combined action of the low intensity electromagnetic and mechanic factors. Critical energy levels of factors, their relative efficiency in direct action on the cell were estimated. Additive effects of microwaves and ultrasound were examined. The data can be valuable for the further investigations concerning the effects of different nonionizing rays.
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