نتایج جستجو برای: ups and medium longshots

تعداد نتایج: 16849998  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

با پیشرفت روزافزون تکنولوژی و گسترش مصرف کننده های الکتریکی حساس و دقیق در کلیه زمینه های صنعتی، نیاز به وجود منبع انرژی الکتریکی به صورت مطمئن و با کیفیت بالا برای تغذیه این مصرف کننده ها افزایش یافته است. از طرفی شبکه های الکتریکی در بسیاری موارد از قابلیت اطمینان کافی جهت تغذیه مستقیم این مصرف کننده ها برخوردار نیستند. منابع تغذیه اضطراری بدون وقفه یا upsها یکی از مهمترین گزینه ها برای رفع ا...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ادبیات و علوم انسانی 1390

“any science seeks generalities; the aim is to transcend knowledge of particular cases by discovering general regularities or laws” (chesterman, 2001, p. 1). these were the words of chesterman whose paper has served as a typical example of numerous papers carried out on ‘translation universals’ since the mid-nineties. blum-kulka (1986) is among translation studies scholars who proposed ‘explici...

Journal: :iranian journal of science and technology transactions of electrical engineering 2015
k. chitra a. jeevanandham

this paper presents the new topology of three phase on line uninterruptible power supply (ups) by employing t-source inverter (tsi) with maximum constant boost pulse width modulation (pwm) control and the results are compared with the conventional uninterruptible power supply (ups). the conventional ups consists of voltage source inverter (vsi) with step up transformer or dc-dc booster which de...

Journal: :جامعه شناسی هنر و ادبیات 0
کمال خالق پناه استادیار گروه جامعه شناسی دانشگاه کردستان مرضیه رضایی کارشناس ارشد جامعه شناسی دانشگاه کردستان

abstract the purpose of this article is to investigate the construction of femininity in rakhshan bani-e’temad’s cinema. the main question here is the aesthetic and social form of femininity in bani-e’temad’s feminine cinema. in order to study this issue, the researchers have used a series of categories in women’s social studies on the femininity construction ; categories such as motherhood, ma...

2013
Saeed Yadranji Aghdam Nader Sheibani

The ubiquitin-proteasome system (UPS) is the mainstay of protein quality control which regulates cell cycle, differentiation and various signal transduction pathways in eukaryotic cells. The timely and selective degradation of surplus and/or aberrant proteins by the UPS is essential for normal cellular physiology. Any disturbance, delay or exaggeration in the process of selection, sequestration...

Journal: :German Journal of Exercise and Sport Research 2020

2017
David B. Audretsch Maksim Belitski Sameeksha Desai

Policymakers have identified the relationship between entrepreneurship and economic development. Yet little is known about how this relationship varies over time in cities with different market size. This study examines the link between new firm start-ups and economic development using a panel of 127 European cities between 1994 and 2009. We found that the immediate economic development impact ...

Journal: :journal of optimization in industrial engineering 2015
saeed zameni jafar razmi

centralizing and using proper transportation facilities cut down costs and traffic. hub facilities concentrate on flows to cause economic advantage of scale and multimodal transportation helps use the advantage of another transporter. a distinctive feature of this paper is proposing a new mathematical formulation for a three-stage p-hub location routing problem with simultaneous pick-ups and de...

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