نتایج جستجو برای: coal tar coatings
تعداد نتایج: 59264 فیلتر نتایج به سال:
By introducing the theory of system safety science, and applying the gray theory prediction method, this paper aims at analysing the major hazards of spontaneous combustion of coal, and divided the impact indicators system into three categories, namely; static indicator, dynamic indicator, and intensive monitoring indicator. The static class indicator determined the hazard class by using risk e...
BACKGROUND We conducted a nested case-control study in a cohort of European asphalt workers in which an increase in lung cancer risk has been reported among workers exposed to airborne bitumen fume, although potential bias and confounding were not fully addressed. OBJECTIVE We investigated the contribution of exposure to bitumen, other occupational agents, and tobacco smoking to the risk of l...
Safety attitude is of vital importance to accident prevention, and the high accident rate in the coal mining industry makes it urgent to undertake research on coal miners’ safety attitude. However, the current literature still lacks a valid and reliable safety attitude measurement scale for coal miners, which stands as a barrier against their safety attitude improvement. In this study, a scale ...
OBJECTIVES To evaluate the comparative efficacy and tolerability of topical calcipotriol in the treatment of mild to moderate chronic plaque psoriasis. DESIGN Quantitative systematic review of randomised controlled trials. SUBJECTS 6038 patients with plaque psoriasis reported in 37 trials. MAIN OUTCOME MEASURES Mean difference in percentage change in scores on psoriasis area and severity ...
OBJECTIVES The purpose of the study was (i) to identify the carcinogenic agents that may cause confounding when studying the exposure-response relationship between bitumen fume exposure and cancer among roofing membrane-manufacturing workers and roofers and (ii) to assess exposures to the identified carcinogens and bitumen fume in roofing membrane manufacturing and roofing in Finland and Denmar...
Occupational tar cancer, or the development of malignant epithelial tumors in those whose work entails prolonged exposure to tar or to certain closely related substances, has for many years constituted a recognized clinical entity. The close causal relationship between chemical agent and tumor development apparent in these cases has stimulated numerous attempts during the last forty years to pr...
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