نتایج جستجو برای: coal tar epoxy
تعداد نتایج: 52068 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...
Corrosion is a primary factor compromising the safety and service life of steel structures. protection coatings are generally employed for structures that exposed to different aggressive environments. This research evaluated use biobased ion exchangers as sustainable means improving corrosion coatings.
 Two base polymer (vinyl coal-tar epoxy) were considered. The following types dosages in...
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...
ing operations involvig the use of a bisphenol-A diglycidyl ether tye of epoxy resin. ln a faciity producig miltaiy aircraft, the use of an epoxy prier did not result in detectable epoxide levels, and the authors surmised that the epoxy-amine curig reaction had probably . consumed most of the epoxide group. Epoxide levels of 2-12 J.Eq/m3 epode functional group were recorded durig the painting o...
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