نتایج جستجو برای: 082 and 098 respectively
تعداد نتایج: 16827989 فیلتر نتایج به سال:
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
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...
Positive solutions and eigenvalue intervals for nonlinear systems JIFENG CHU1,2, DONAL O’REGAN3 and MEIRONG ZHANG1 1Department of Mathematical Sciences, Tsinghua University, Beijing 100 084, China 2Department of Applied Mathematics, Hohai University, Nanjing 210 098, China 3Department of Mathematics, National University of Ireland, Galway, Ireland E-mail: [email protected]; [email protected]...
in this thesis, phosphorus ylides [phbppy], [no2bppy] and [brbppy] have been synthesized through the formation of phosphonium salt and dihydrogenation, followed by the reaction of pd(oac)2 and the orthopalladated dinuclear complexes [pd(?-cl)(phbppy)]2, [pd(?-cl)(no2bppy)]2 and [pd(?-cl)(brbppy)]2 have been produced. the reaction of dinuclear complexes and bidentate ligands [l = bipy (2,2-bipyr...
در پایان نامه مورد نظر ، نقش باغ شهرها در تحول گردشگری آنها، تبیین و تحلیل شده است و هدف آن ایجاد تحولات اقتصادی، اجتماعی و ساختاری ـ کارکردی در نظام فضایی گردشگری باغ شهر ابهر و نواحی مشابه، به منظور توسعه گردشگری آنهاست. روش تحقیق کمی ـ میدانی می باشد. بدین منظور داده های حاصله از 278 پرسشنامه گردشگران، که حجم نمونه آنها با روش کوکران و 30 پرسشنامه مسئولین و کارشناسان ادارات مرتبط با گردشگری ...
This study compared 2 screening tests for detecting undiagnosed diabetes mellitus when applied in a mass-screening campaign in the Eastern province of Saudi Arabia in 2004-05. Of 15 082 individuals screened, 65.8% were positive by the American Diabetes Association risk-score questionnaire and 71.3% by determination of capillary blood glucose (CBG) using a portable glucometer. Type 2 diabetes me...
The Na(+)/dicarboxylate cotransporter NaDC1 absorbs citric acid cycle intermediates from the lumen of the small intestine and kidney proximal tubule. No effective inhibitor has been identified yet, although previous studies showed that the nonsteroidal anti-inflammatory drug, flufenamate, inhibits the human (h) NaDC1 with an IC(50) value of 2 mM. In the present study, we have tested compounds r...
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