نتایج جستجو برای: work index
تعداد نتایج: 1314395 فیلتر نتایج به سال:
Introduction: Daytime sleepiness is the most common daily manifestations of obstructive sleep apnea disorder that have a negative impact on many people's cognitive and behavioral performance. Patients who suffer from these disorders compared with healthy people exposed to increased risk of neuropsychiatric complications, driving accidents and occupational accidents that can ...
this thesis seeks to present a critical reading of virginia woolf’s mrs. dalloway and michael cunningham’s the hours in terms of an intertextual approach, concentrating on dialogic imagination, negativity, transposition and allusion. this study attempts to evaluate cunninghams perception of woolfs life and work by adopting kristevas conception of intertextuality and her consideration of the hou...
Background and aims: Sleep disorders are among the most prevalent disorders today and especially in the industrial and developed countries. Their prevalence have been variable in different populations. The occurrence of these disorders in working population can cause occupational injuries and reduces the performance of the employees. It also can be hazardous. In this article, the association be...
هدف از این تحقیق ، توصیف وضعیت برخی از عوامل آمادگی جسمانی و ترکیب بدنی دانشجویان دختر دانشگاه علوم پزشکی تهران است . لذا متغیرهای تحقیق عبارتند از : آمادگی جسمانی ، شامل : استقامت عضلات خم کننده بالاتنه ، استقامت عضلات کمربند شانه، چابکی، استقامت قلبی-تنفسی و در بخش ترکیب بدنی شامل وزن -قد، درصد چربی ، شاخص توده بدن، شاخص نسبت قد به ریشه سوم وزن ponderal index)hwr) ، شاخص نسبت محیط کمر ب...
It is a privilege and a pleasure to be able to have these pages of foreword to Gene Garfield’s essays. My first encounter with Gene dates back to the publication of his landmark article in Science 1 “Citation indexes for science; a new dimension in documentation through association of ideas”. A few years later I recalled this first paper and asked myself whatever might have come of his proposal...
کتاب در باب ترجمه، اثر استر آلن و سوزان برنوفسکی منتشر شده در ماه می 2013 توسط نشریه کلمبیا است. نویسندگان در این کتاب به بررسی 18 مترجم با در نظر گرفتن نقش آثاری که این مترجمان ترجمه کرده اند میپردازند. کتاب به دو بخش تقسیم میشود: " مترجم در جهان" و " کار مترجم" این دو بخش مقالات همیشگی ترجمه و موقعیت خاص ادبیات بیگانه در جهان وسیع امروزی را مورد خطاب قرار میدهد. در این کتاب مقالات متعددی از ن...
Introduction: Work-related musculoskeletal disorders are among the most common diseases that cause absenteeism and disability. Exposure to ergonomic risk factors in construction workers increases the risk of discomfort and musculoskeletal disorders in this group. The present study investigates occupational and individual factors predicting musculoskeletal disorders and pain disabilities in cons...
In the present work, first an analytic relation for position-dependent effective mass in a quantum rod is obtained. Then, the effect of position-dependent effective mass on the intersubband optical absorption coeffcient and the refractive index change in the quantum rod is examined. Our numerical calculations are performed using both a constant effective mass and the position-dependent effect...
Copper smelting slags are hard materials. Therefore,to recover their copper by flotation method, grinding should be carried out to obtain optimal particle size. Copper smelting slags in the Bardeskan district, with work index of 16.24 kwh/st, were grinded for 65 minutes to reach an acceptable degree of freedom for the flotation tests, with particle size of 80%, smaller than 70 μm. With this gri...
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