نتایج جستجو برای: investigation of inheritance
تعداد نتایج: 21177419 فیلتر نتایج به سال:
BACKGROUND Alzheimer's disease (AD) is one of the most common problems for old peoples. Etiology of AD is not clear, but genetic factors play a major role in determining a person's risk to develop AD. Twin and family studies confirm that AD has a genetic basis. AD genetics has been split into two broad categories: early-onset and late-onset. EOAD cases are inherited in an autosomal dominant pat...
ترانسفورماتورهای قدرت از اجزای اصلی شبکه تامین انرژی الکتریکی می باشند که عملکرد قابل اطمینان ترانسفورماتورها یکی از فاکتورهای مهم و تعیین کننده در تامین انرژی الکتریکی محسوب می شود. در نتیجه بررسی و مانیتور عملکرد ترانسفورماتورها در شبکه و همچنین عیب یابی این ترانسفورماتورها غیرقابل اجتناب و ضروری می باشد. به طور کلی عایق های مایع در صنعت فشار قوی کاربردهای متفاوتی دارند که مهمترین وظیفه آنها...
boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...
Family-based linkage analysis has been a powerful tool for identification of genes contributing to traits with monogenic patterns of inheritance. These approaches have been of limited utility in identification of genes underlying complex traits. In contrast, searches for common genetic variants associated with complex traits have been highly successful. It is now widely recognized that common v...
Taking Huaying Mountain pole sliding and carrying the “Yaomei” as a case study, using research methods such literature review, field investigation, expert interviews, studies, combining author’s upbringing in area immersion local culture since childhood, this study approaches national intangible cultural heritage of from perspective to analyze its inheritance crisis strategies. The findings rev...
چکیده ندارد.
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
the ability to speak two languages in the world is a remarkable achievement. there is a good reason to believe that bilingualism is the norm for the majority of people in the world because 70% of the earth’s population are supposed to be bilingual or multilingual. various investigations have shown that the native language impacts foreign word recognition, and this influence is adapted by the de...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
In this paper, we describe an empirical investigation into the modiiability and understandability of Object-Oriented (OO) software. A controlled experiment was conducted to establish the eeects of varying levels of inheritance on understandability and modiiability. The software used in this experiment consisted of a C++ system without any inheritance and a corresponding version containing three...
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