نتایج جستجو برای: variable numbers of tandem

تعداد نتایج: 21190302  

Journal: :iranian biomedical journal 0
morteza bagheri isa abdi rad nima hosseini jazani rasou zarrin ahad ghazavi

background: the variable numbers of tandem-repeat (vntr) alleles at the phenylalanine hydroxylase (pah) gene have been used in carrier detection and prenatal diagnosis in phenylketonuria families. this study was carried out to analyze vntr alleles at the pah gene in iranian azeri turkish population. methods: in this study, 200 alleles from general population were studied by pcr. results: the fr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم 1380

هدف این پایان نامه تعیین تعداد مولدهای مینیمال ایده آلها در یک حلقه (جابجایی، یکدار، موضعی و نوتری) است، هر چند تعیین دقیق تعداد مولدها در حالتهایی خاص امکان پذیر است اما در حالتهای کلی روش های موجود بدست آوردن کرانهای مختلف برای تعداد مولدها است. مرجع اصلی این پایانامه ‏‎[1]‎‏ می باشد، به علاوه از نتایج جدیدی که در مرجع ‏‎‏‎[2]‎‏ نیز آمده استفاده کرده ایم. ‏‎[1]. j. sally. numbers of generator...

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this study examined the effect of prior knowledge and vocabulary teaching on iranian efl learners listening comprehension. the current study has two purposes: one is to investigate the effect of background knowledge on the second language listening comprehension of iranian intermediates and the other is to determine whether second language is facilitated by the introduction of unknown vocabularies in the form of prelistening activities. to conduct the study different instruments such as listening proficiency test and four listening tests such as pre and posttests were used and various statistical processes and techniques including paired-sample t-test, and analysis of variance (anova) were used. the findings of this study supported all three hypotheses tested. differences were found between the means of preteaching vocabulary variable, the background knowledge activation variable, and mean difference between these two strategies variable. subjects scored higher when the unknown words were taught in advance. likewise, subjects scored higher when they were asked some relevant questions about the topic than on those without them. there was, in addition, a significant difference between the means of preteaching vocabulary strategy and background knowledge activation strategy. in fact, preteaching vocabulary had a better effect in enhancing the students’ listening comprehension, in comparison to background knowledge activation strategy.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1390

this thesis attempts to investigate the effects of prelistening activities on enhancing iranian efl learners` listening comprehension. the present study investigated ways in which learners` background knowledge could be activated in order to enhance their l2 listening comprehension by limiting the number of possible text interpretations prior to listening. the experiments conducted in this stud...

Journal: :iranian biomedical journal 0
مریم کامکار maryam kamkar مصطفی سعادت mostafa saadat ایرج سعادت iraj saadat گل بهار حقیقی golbahar haghighi

phenylketonuria (pku) is one of the most common metabolic inborn diseases caused by mutations in the phenylalanine hydroxylase (pah) gene. this gene is linked to a variable number of tandem repeats (vntr) region which is a polymorphic marker that facilitates the implementation of prenatal diagnosis and carrier screening. in this study, vntr with 13 repeats that has not been reported previously ...

پایان نامه :0 1374

in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...

پایان نامه :0 1392

nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

اختلال دوقطبی یک ناهنجاری روانی جدی است که جزء مهمترین عوامل ناتوانی در میان بیماری های روانی محسوب می شود و حدود یک درصد از جمعیت را تحت تاثیر قرار می دهد. استرس اکسیداتیو در فیزیولوژی آسیب بیماران مبتلا به اختلال دوقطبی نقش مهمی بازی می کند و مطالعات از افزایش آسیب های dna ناشی از این استرس در این بیماران خبر می دهند. xrcc4 و xrcc5 پروتئین های درگیر در مسیر ترمیمی non-homologous end joining (...

Journal: :avicenna journal of medical biotechnology 0

background: classification of molar gestation into complete hydatidiform mole (chm) and partial hydatidiform mole (phm) is done according to clinical, ultrasonographic, histologic and genetic criteria. however, making a distinction between chm and phm using histologic criteria alone may be difficult and several studies have shown that misclassifications are frequent, even for experienced pathol...

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