نتایج جستجو برای: transition
تعداد نتایج: 262109 فیلتر نتایج به سال:
پوششهای tbc یکی از جدیدترین و پیشرفته ترین پوششهایی است که امروزه در توربینهای گازی نیروگاهها و توربینهای هواپیماها استفاده می شود. این پوششها با ایجاد اختلاف دما در حدود 100 تا 150 درجه سانتیگراد، باعث افزایش عمر سوپرآلیاژهای قطعات داغ و نیز باعث صرفه جویی چشمگیری در مصرف سوخت نیروگاهها و هواپیماها می گردد. در این تحقیق، بحث و بررسی در مورد علل تخریب پوششهای tbc در لاینرها و قطعات transition p...
in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...
در مطالعه عمیق روی توزیع زاویه ای پاره های شکافت در واکنش یون سنگین ناهمسانگردی های زیادی دیده شده است. این ناهمسانگردی ها را می توان توسط نظریه استاندارد آماری (tsm)(transition statistical state model) توضیح داد.46علت وجود این ناهمسانگردی ها را می توان به اسپین بالا یا z2/a هسته شکافت پذیر نسبت داد1. برای ناهمسانگردیهای بیشترمی -توان از مدل آماری انقطاع (ssm)استفاده کرد. در این مدل توزیع تصویر...
This paper aims to investigate transition paths and reasons of failure of Iran’s wind turbines industry in transition to sustainability successfully. In this regard, a qualitative approach and case study strategy have been used. For this purpose, based on type of national innovation system, the transition path and sustainability transition status of the wind turbines industry in selected countr...
This paper aims to investigate transition paths and reasons of failure of Iran’s wind turbines industry in transition to sustainability successfully. In this regard, a qualitative approach and case study strategy have been used. For this purpose, based on type of national innovation system, the transition path and sustainability transition status of the wind turbines industry in selected countr...
abstract the spontaneous emission spectrum from a driven three-level atom placed inside a double-band photonic crystal has been investigated. we use the model which assumes the upper levels of the atomic transition are coupled via a classical driving field. the transition from one of the upper levels to lower level couples to the modes of the modified reservoir, and the transition from the othe...
concept analysis of transition from nursing student to clinical nurse: rodgers' evolutionary concept analysis rafieef [1] , sajadihezaveh m [2] * received: 21 feb, 2012 accepted: 27apr, 2012 abstract background &aims; : the transition from nursing student to clinical nursing is a major challenge.the aim of this study was to clarify concept of transition in new graduate nursin...
Background & Aim: Transition from studentship to working life is a stressful and challenging event. The concept of transition is important in nursing education, management, and practice issues. However, despite its supreme importance, there are certain ambiguities about the concept of transition in nursing. The aim of this study was to analyze the concept of transition in the context of nursi...
considering a temperature dependent two-level quantum system, we have numerically solved the landau-zener transition problem. the method includes the incorporation of temperature effect as a thermal noise added schrödinger equation for the construction of the hamiltonian. here, the obtained results which describe the changes in the system including the quantum states and the transition probabil...
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