نتایج جستجو برای: heavy work

تعداد نتایج: 1061047  

Heavy metals are normally found in soils. Industrialization and urbanization have increased the anthropogenic contribution of heavy metals in biosphere. Phytoremediation is an important technology for remedying contaminated sites. In this work, we studied the capability of stability, growth, and uptake of heavy metals by means of Thlaspi caerulescen, Zea mays, Helianthus annuus, Eruca sativa, ...

Background: Due to high prevalence of musculoskeletal risk factors among kitchen workers and their role in causing discomfort, the aim of this study was to investigate the effects of ergonomic factors (mental workload and working posture) on musculoskeletal disorders (MSDs) among workers of training hospitals in Qazvin, Iran. Materials and Methods: This cross-sectional study was done through...

2008
Elizabeth Jenkins

The hyperfine mass splittings of baryons containing a heavy quark are derived at leading order in large N QCD. Hyperfine splittings either preserve or violate heavy quark spin symmetry. Previous work proves that the splittings which preserve heavy quark spin symmetry are proportional to J at order 1/N , where J is the angular momentum of the light degrees of freedom of the baryon. This work pro...

بنفشه آل محمد, زهرا , سرایی, مریم, ناصری اصفهانی, امیر حسین,

The best example of irritant induced occupational asthma is reactive airways dysfunction syndrome (RADS) which is usually unregarded. We present a 29-year-old security guard from an Iranian car manufacturing company who was exposed to heavy smoke during a fire in work place in five years ago. He was referred because of his persistent asthma like symptoms after that accident to determin the acco...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - پژوهشکده زبانشناسی 1389

a professional is someone whose work involves performing a certain function with some degree of expertise. but a narrower definition limits the term to apply to people such as teachers and doctors, whose expertise involves not only skill and knowledge but also the exercise of highly sophisticated judgment, and whose accreditation necessitates extensive study, often university-based as well as p...

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