نتایج جستجو برای: first and second trimester screening

تعداد نتایج: 17012020  

Journal: :iranian journal of public health 0
elham seyyed-kavoosi tehran genetic clinic, 22 keshavaraz blvd., tehran, iran. sarang younessi niloo laboratory, valiasr street, tehran, iran. dariush d. farhud tehran genetic clinic, 22 keshavaraz blvd., tehran, iran and school of public health, tehran university of medical sciences, tehran, iran and dept. of basic sciences, iranian academy of medical sciences, tehran, iran.

background : aneuploidy is one of the main causes of congenital anomalies, mental and physical disabilities, in new-borns. the aim of this study was to determine various chromosomal aneuploidies in the first and second trimester screening of pregnant women, in iran. methods : a descriptive retrospective study was conducted on 125,170 pregnant women referred to a major referral medical diagnosti...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی شیمی 1391

attempts have been made to study the thermodynamic behavior of 1,3 butadiene purification columns with the aim of retrofitting those columns to more energy efficient separation schemes. 1,3 butadiene is purified in two columns in series through being separated from methyl acetylene and 1,2 butadiene in the first and second column respectively. comparisons have been made among different therm...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1390

this study was designed and conducted to find out if there is any significant relationship between iranian efl learners preferance for one of the three degrees of obtrusiveness in foreign language instruction (focus on form, forms and meaning) and their preferred experiential learing style. to collect the data two questionnaires were used. the first one on the degree of obtrusiveness and the se...

Journal: :Ultrasound in Obstetrics and Gynecology 2001

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد مرودشت - دانشکده علوم پایه 1393

the present study attempts to discover ideological differences between alcott’s novel (1868) named “little women” and its two persian translations. the first has been translated by morvarid and the second has been translated by obeidi. to this end, farahzad’s cda approach (2012) was used to analyze the ideology reflected in both translations by the two different translators. according to farahz...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

the caspian sea contains great resources of oil and gas. the caspian sea is a 700- mile- long body of water in central asia, land located between azerbaijan, iran, kazakhstan, russia and turkmenistan. iran was challenges and opportunities in the caspian region. key question in this thesis includes three section that first question, opportunities of iran in the caspian region, second question ch...

Journal: :The Australian & New Zealand journal of obstetrics & gynaecology 2008
Robert Cocciolone Kate Brameld Peter O'Leary Eric Haan Peter Muller Karen Shand

AIMS This study compares different screening strategies for the detection of Down syndrome and considers practical implications of using multiple screening protocols. METHODS The performance characteristics of each screening strategy were assessed based on datasets of Down syndrome (n=11) and unaffected pregnancies (n=1006) tested in both first and second trimester, as well as data from first...

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