منابع مشابه
A Survey on Infertility in Royan Institute
Background Infertility is defined as failure in pregnancy after one year of unprotected intercourse. Several centers have reported different causes of infertility. The most common causes of infertility are: male factor such as sperm disturbance, female factor such as ovulation dysfunction and tubal factor, both male and female factor, and unexplained infertility .The aim of this study was to su...
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Endocrinology and Metabolism Research Institute (EMRI) was established in 1993. EMRI has progressed step by step from the beginning and has reached maturity in the last 25 years. EMRI has expanded, advanced in human resources and infrastructures (laboratories and new technologies) and gained first rank in endocrine research in various fields. It has also worked with regional and international o...
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a non-profit institution devoted to research on network industries, electronic commerce, telecommunications, the Internet, " virtual networks " comprised of computers that share the same technical standard or operating system, and on network issues in general. This paper examines the effect of recommender systems on the diversity of sales. Two anecdotal views exist about such effects. Some beli...
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ژورنال
عنوان ژورنال: Nature
سال: 1911
ISSN: 0028-0836,1476-4687
DOI: 10.1038/087490a0