نتایج جستجو برای: metal industry
تعداد نتایج: 385675 فیلتر نتایج به سال:
A slightly modified form of the branched pore model of Peel, Benedek and Crowe was successfully applied to describe the batch sorption kinetics of three metal ions—cadmium, copper and zinc—on bone char. In comparison with an analytical film-surface solution, the additional parameters of the branched pore model were observed to produce a significant improvement in correlating the experimental re...
Usually, we must use an appropriate support material to keep the metal species stable and finely dispersed as supported metal nanoparticles for industry application. Therefore, the choice of support material is a key factor in determining the dispersion and particle size of the noble metal species. Here, we report the synthesis of a single-atom Pt material in the solution and supported Pt nanoc...
Introduction and purpose: Risk assessment of toxic or hazardous chemicals enables industrial hygienists to make appropriate decisions regarding management provisions in a healthy workplace. Exposure to total fumes and manganese during welding can have harmful effects on welders’ health. Therefore, the present study was conducted in the metal industry to evaluate the concentration and determine ...
background : biorhythm is one of the latest issues of subjective ergonomics. it can be effective in raising the level of job satisfaction, and therefore, preventing the occurrence of accidents in the workplace through understanding the physical, emotional, and mental characteristics of individuals. thus, the aim of this study was to examine the impact of biological cycles on occupational accide...
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