با توجه به اهمیت میتوکندری در تکوین جنین مراحل قبل از لانه گزینی، هدف از این مطالعه بررسی تأثیر انجماد شیشه ای و تکوین در محیط کشت بر روی پراکندگی میتوکندری و میزان atp جنین های موش در مراحل 2-pn، 4سلولی و early blastocyst بود. بدین منظور موشهای ماده nmri بالغ 6-7 هفته ای با استفاده از تزریق داخل صفاقی iu 10 واحد pregnant mars serum gonadotrpin و human chorionic gonadotrpin تحریک شده و در کنا...

adolescents and young adults and their problems is an issue whose importance is obvious to anyone because youth are the founders of our countrys future and requires proper planning to be on leisure. given the importance of leisure,this study to investigate needs assessment and planning how adolescents and young adults spend their leisure time in urban of case study of high school girls and boys...

During the past two decades an array of studies have shed light on potential links between the evolution of Hominids as well as Human dispersal out of Africa and episodes of abrupt climate change. Although archaeological evidences suggest that anatomically modified humans appeared in Africa between 200 and 150 ky ago, the timing of the early humans migration out of Africa remained unclear. Stra...

charles dickens was a voracious reader even in his childhood. his early reading of seventeenth- and eighteenth-century picaresque fiction greatly influenced his writing style. his first novel, the pickwick papers, is a tale of rogues and swindlers, adventures and quests, satire and comedy, and innocence and experience. oliver twist, dickens’ second novel, is a young boy’s progress through a cor...

جنش گردو متعلق به خانواده ژوگلانداسه (juglandaceae دارای چندین گونه می باشد که در سراسر جهان پراکنش دارند شناخته شده ترین عضو این خانواده گردوی ایرانی یا گردوی معمولی (juglans regia l.) درختانی برگ ریز هستند که اساسا در مناطق معتدل جهان از جمله اسیا یافت می شوند. گردو علاوه بر مصرف غذایی و تهیه روغن تاریخچه درمانی دیرینه دارد دراد ود در طب عوام در درمان بسیاری از بیماری ها مورد استفاده بوده است...

until now many studies have been done over recent decades throughout the world to show the right age to start english. in iran, research is still at an early stage in terms of evaluating teachers’ beliefs about teaching children english. the problem of at what age to start teaching english and how to teach english to elementary school children has not been solved neither in this country nor els...

this study investigates the relationships between iranian efl teachers’ perfectionism, burnout and their teaching style preferences, and also the difference between male and female efl teachers and their teaching style preferences. to this end, a sample of 99 efl teachers (46 males and 53 females), who had years of teaching experience, were selected. the measurement scales used in this study we...

abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...