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تعداد نتایج: 17052372 فیلتر نتایج به سال:
Background: Tremendous difficulties are imposed on families with preterm and premature babies, both at birth and during their lifetime. The present study aimed at evaluating the potential economic impact of preterm and premature birth in Iran. Methods: In this descriptive cross-sectional study (2014-2015), we studied preterm and premature newborns, who have been subjected to hospi...
BACKGROUND The purpose of this study was to describe the resource use and associated direct costs of diabetes care for patients with type 2 diabetes mellitus in the 6 months before and after initiation of insulin therapy. METHODS INSTIGATE is a prospective, noninterventional, multicenter study of patients with type 2 diabetes who were initiating insulin for the first time as part of their usu...
the importance of iranian ancient as architectural heritage have to competent international prestige a nd respect due this is important with regard to proper conservation met hods based on non-destructive evaluation methods and non-contact testing providing enough accuracy and speed to bri ng performance to stabilize while correct location and age value of valuable architectural aspect of quant...
In this paper, at first, the non-detection zones (NDZ) of under/over voltage relay have been determined for constant current inverter based DG and then, an islanding detection method is presented using this relay. In the presented method, the DG direct current reference has a fixed value in normal condition, if the point of common coupling (PCC) voltage changes, Idref is determined as a linear ...
The present study is intended to examine the effect of accounting conservatism on firms’ non-profitability in Tehran Stock Exchange in 48 unprofitable firms and 57 profitable firms over a period of seven years from 2001 to 2007. This study was conducted according to Givoly and Hayn model to measure accounting conservatism index in non-profitable and profitable) firms. Data analysis performed wi...
چکیده ندارد.
in this project, 4,4?-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a diacid, was prepared by the reaction of trimellitic anhydride (tma) with 4,4?-methylenebis(3-chloro-2,6-diethylaniline) (mcdea). the novel poly(amide-imide) (pai) was synthesized from the reaction of 4,4?-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a diacid with mcdea under green condition using ...
the purpose of this study is to investigate the relationships between teachers’ immediacy behaviors and iranian students’ willingness to talk in english classes. analysis of the results from willingness to talk scale represents a relatively high level of willingness to talk in english classrooms among iranian language learners. the total mean score of students’ willingness to talk was 66.3 ou...
ددر این تحقیق استفاده از کربن اکتیو ، ذرات نانو مغناطیسی آهن و ذرات نانو کامپوزیت آهن- کربن اکتیو، برای حذف رنگ آنیونی از پسابهای سمی مورد مطالعه قرار گرفتند . رنگ direct orange -26 به عنوان مدلی از رنگ آنیونی مورد بررسی قرار گرفت. مشخصات سطحی نانو ذرات آهن و نانو کامپوزیت آهن توسط sem مورد بررسی قرار گرفت . تاثیر عوامل مختلف (ph ، دوز جاذب، زمان تماس، دور هم زدن) به روش طراحی آزمایش تاگوچی مور...
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