نتایج جستجو برای: hot start
تعداد نتایج: 171359 فیلتر نتایج به سال:
The paper discusses optimization issues related to start-ups from intermediate states defined as hot and warm, i.e. carried out after a few or several hours of downtime. Such are characterized by non-uniform field the initial temperature. For this reason, any simulation start-up processes should be preceded simulations cooling process obtain close-to-real temperature distribution at moment when...
Background and Aim: Hot flash is one of the most prevalent problems in postmenopausal period.Considering the controversies on hormonal replacement therapy, the aim of this study was to evaluate the effect of a nonhormonal drug ,i.e. flouxetine, on hot flash and to compare it with a placebo. Materials and Methods: In this randomized clinical trial, 80 Postmenopausal women were divided into two e...
In this study, hot metal gas forming process of AA6063aluminumtubeis studied with a focus on heat transfer of both fluid and solid phases numerically. An experimental study is simultaneously conducted to validate the numerical method. Some of the most important outputs of the present study, are velocity distribution of fluid inside the tube as well as the fluid in the gap between tube and matri...
Introduction: Hot flashes are common and discomfortable signs of menopause that present with blazing sweatiness, sense of hotness, tachycardia and agitation. Hot flashes cause disturbances in daily activity and quality of night sleep. In spite of the effect of Hormone Replacement Therapy (HRT) on hot flashes, nowadays, there are diverse opinions about HRT and the reason is that it has chronic ...
در این پایان نامه در ابتدا دلایل شکل گیری آلاینده ها در شرایط cold start و warm up و راهکارهای کاهش آنها ارائه می شود. در ادامه، بهینه سازی فرایند شکل گیری مخلوط هوا و سوخت از طریق کنترل دقیق نسبت هوا به سوخت بعنوان یکی از بهترین راهکارهای عملی کاهش آلاینده ها در شرایط cold start و warm up با جزئیات کامل مورد بررسی قرار می گیرد. مدل بدست آمده (برای موتور پیکان انژکتور)، شبیه سازی می شود و نتایج...
The temporary ineffectiveness of motor vehicle emission controls at startup causes emission rates to be much higher for a short period after starting than during fully warmed, or stabilized, vehicle operation. Official motor vehicle emission inventories estimate that excess emissions during cold-start operation contribute a significant fraction of all hydrocarbon, carbon monoxide (CO), and nitr...
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