نتایج جستجو برای: Work Index
تعداد نتایج: 1314395 فیلتر نتایج به سال:
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
conclusions the was could be used for reliable assessment of work ability among iranian workers. to improve the worker’s work ability, interventional programs should focus on the alteration and correction of work schedule, and increasing the supervisor’s support for the young workers. objectives the present study aimed to assess work ability using wai and was instruments and to compare their re...
background: the purpose of this research is to establish the ability of employees by work ability index (wai), physical work capacity (pwc), and finding the correlation between them . establishing the pwc index with attention to wai values for the purpose of saving in costs and time of pwc measurements is another aim of this project. methods: the present research is an analytic cross-sectional ...
introduction: to reduce occupational accidents and work-related diseases as well as improving satisfaction of working conditions, assessment to identify risks and control measures are necessary. the aim of this study, applying ergonomic assessment indices to assessed the job groups and ability of textile workers. materials and methods: this study was conducted on 194 men employed in the qaembaf...
it is always attempted to reduce the costs of comminution in mineral processing plants. one of thedifficulties in size reduction section is not to be designed properly. the key factor to design size reductionunits such as crushers and grinding mills, is ore’s work index. the work index, wi, presents the oregrindability, and is used in bond formula to calculate the required energy. bond has defi...
background and objective : restless legs syndrome (rls) is a sleep disorder with an association to sleep quality. we investigated the sleep quality in patients with rls among health-care workers with or without shift work. materials and methods : all female health-care workers (n = 540) in four educational hospitals were enrolled in this cross-sectional study. international rls study group (irl...
background: the correct appraisal of the employees' work ability is important for employers in the economic viewpoint. improving the personnel's work ability is a way to increase the productivity of human resources in industries and organizations. the purpose of this research was to evaluate the ability of employees by work ability index (wai) and physical work capacity (pwc) and to find a corr...
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