نتایج جستجو برای: heavy work
تعداد نتایج: 1061047 فیلتر نتایج به سال:
Within an effective field theory framework, we obtain an expression, with O(1/m) accuracy, for the energies of the gluonic excitations between heavy quarks, which holds beyond perturbation theory. For the singlet heavy-quark–antiquark energy, in particular, we also obtain an expression in terms of Wilson loops. This provides, twenty years after the seminal work of Eichten and Feinberg, the firs...
The aim of the study was to evaluate the evidence for an association between hip osteoarthritis (OA) and physical work demands. Systematic searches were made and epidemiological studies on hip OA and heavy lifting, including farming and construction work and climbing stairs, were reviewed for the period 1966-2007 inclusive. The quality of the studies was assessed and best-evidence syntheses of ...
Introduction: Heavy metals in chemical paints pollute the environment, including the refineries and painting workshops air, and can damage the workerschr('39') health. The level of knowledge and information of the workers in painting workshops with the harms of heavy metals is effective in improving their safety. The present study investigated the knowledge, attitude and practice of activists ...
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