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At least 1,783 records · Page 99Linked to original sources
PubMed1985

[General physical fitness of metallurgy workers exposed to thermal load].

General physical fitness of 475 metallurgists, 203 subjects working under heat stress and 272 subjects working under normal environment conditions, has been determined. Evaluation of physical fitness was based on the maximal oxygen consumption (VO2max), the Harvard "Step test" and some laboratory examinations. Physical fitness was below average, poor and very poor in both groups without statistically significant differences between the exposed and control groups. A statistically significant correlation has been found between VO2max and Harvard "Step test". Arterial hypertension greater than or equal to 21,3/12,7 kPa has been found in 27% of subjects of the exposed group and in 23% of the control group. Cholesterol level greater than or equal to 6,7 nmol/l has been found in 14,8% of the exposed and in 17,6% of the control group. A statistically significant negative correlation between the cholesterol concentration and the score of the Harvard "Step test" of both groups has been found, and also between VO2max of the exposed group only. Above 50% of subjects exhibited various abnormalities in electrocardiogram mainly of type IV, VII, IX, according to the Minnesota Code. General physical fitness of metallurgists has been considerably lower as compared to the literature data. It is concluded that periodic examinations of general physical fitness should be performed for evaluation of the health condition. Industrial physicians should utilize the results of those examinations for prevention.

Adult↗
PubMed1985

[Evaluation of exposure of workers to asbestos dust in asbestos-processing plants].

Working environments have been tested in plants producing asbestos products, asbestos-cement products, textile asbestos products, asbestos-caoutchouc plates, asbestos boards and asbestos frictional materials for automotive industry, Measurements of total dust concentrations and concentrations of asbestos fibres 5 micron long supported workers' exposure investigations. Basing on literature data on the working environment at the Mining Metallurgical Plant in Szklary, the health risk for workers producing nickel from ores containing asbestos mixtures has been analysed. The asbestos-exposure in asbestos-processing plants has been found to be still considerable despite modernization of the plants. Particularly dangerous to health have been regarded the conditions at asbestos spinning-mills and the Mining-Metallurgical Plant at Szklary, where even average asbestos concentrations considerably exceed the threshold limit values.

Air Pollutants, Occupational↗
PubMed1985

Radon transport in soil and its relation to indoor radioactivity.

The transport of radon from soil to the indoor living space involves diffusion and viscous flow in the soil coupled with transfer to the building interior of radon-rich air which accumulates in cavities and channels below and around the foundations of buildings. Radon concentrations in soil pores at depth are dependent upon the radium content of the soil, emanating power for radium, and soil moisture content. Atmospheric pressure fluctuation, thermal gradients in fractured rocks, and air instabilities due to temperature differences allow air of high radon content to reach living space in dwellings in addition to that which comes directly from building materials and other sources.

Construction Materials↗
PubMed1977

[Effect of various breeding conditions on the development of respiratory syndrome in calves].

In two experimental rearing houses with new-born non-colostral calves, separated from their mothers at birth and artificially fed colostrum or colostral whey, the epizootological situation was very favourable throughout the time of observation. The respiratory syndrome occurred in both cases as a result of the long-term worsening of microclimatic conditions and failure to adhere to the principle of the all-in all-out system. The etiology of the disease was of a complex character, involving virus PI-3, IBR, and bacteria, and its arising reminded of the exacerbation of latent virus infection. The primary role of the PI-3 virus in the arising of the disease was documented by complex laboratory examination. As distinct from the large-capacity calf-house with continual operation where the PI-3 virus and the same bacteria participated in the arising of the respiratory syndrome, which was not controlled, in the experimental calf-houses it was sufficient to adjust the microclimatic conditions, to disinfect the stables, and to adhere strictly to the priniciple of the all-in all-out system. The proposed method of the rearing of "minimum-morbidity calves" appears to be promising for use in the prevention of respiratory infections in calves and its further testing in large-capacity calf-houses is considered as desirable.

Animal Husbandry↗