منابع مشابه
the pathology of historical texts translation: a study of persian translations of 7th volume of cambridge history of iran
ترجمه با گسترش زبان آغاز شده و اهمیت آن روز به روز افزایش می یابد، و برای اولین بار به عنوان شاخه ای از دانش و روشی برای انتقال علوم، فرهنگ و تجربه در در دوره قاجار در ایران آغاز شد. در حقیقت متون تاریخی از اولین متونی هستند که در ایران ترجمه شدند چرا که به سیاستمداران آن دوره کمک می کردند تا به علل موفقیت جهان غرب و پیشرفت هایشان در طول تاریخ پی ببرند، بنابراین به تدریج ترجمه این گونه متون رون...
15 صفحه اولA survey of patients with mental retardation of unknown origin
Introduction: Fragile X syndrome (FXS) is one of the most prevalent genetic causes of developmental disability, representing the most frequent form of inherited severe cognitive deficit. The present study was undertaken to investigate FXS and its prevalence in moderate mentally retarded people in patients. Materials and methods: Nineteen people with moderate mental retardation (MR) who wer...
متن کاملFractional Free-Volume dependence of Oxygen in Beta-Irradiated Polystyrene Probed by Positron life time
Positron annihilation lifetime (PAL) technique has been employed to investigate the effect of low doses of -irradiation (in air and vacuum) on the type of polymers namely: polystyrene (PS). A conventional fast-slow coincidence system was used for measuring the positron lifetime spectra. The time resolution of the system was ٤٢٢±٢٠ ps (the full width at half maximum (FWHM)) at Na energy window....
متن کاملeffects of different types of clays and maleic anhydride modified polystyrene on polystyrene/clay nanocomposites
polymer/clay nanocomposites are considered as a new subject of research in iran and the world. addition of a minimum amount of clay (2-5wt%) can improve the mechanical properties, enhance barrier properties and reduce flammability dramatically. polystyrene (ps) exhibits high strength, high modulus and excellent dimensional stability, but it has poor ductility, elongation, and flexural modulus. ...
متن کاملGenetic Causes of Mental Retardation in Bushehr Province
Objective: About 50% of severe to profound intellectual disabilities (ID) are caused by genetic factors. In this study we decided to investigate the genetic causes of ID in 69 Bushehrian families to provide information for genetic counseling, carrier detection, and prenatal diagnosis. Materials & Methods: In this study we excluded known chromosomal abnormalities. The majority of families had...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 1970
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.1.632