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تعداد نتایج: 16954582 فیلتر نتایج به سال:
the aim of this study is investigating the effect of teaching “metacognitive strategies” on the way which scientific information retrieval workes by the using of google scholar searching machine on the students of ms in the psycology & education faculty of allameh tabatabayi university in 2007-2008 academic year. the statistical community was the students of ms in psychology & education facult...
abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...
بالاخانواده ascoidea شامل سه خانواده ascidae، ameroseiidaeو melicharidae است. بالاخانواده phytoseioidea شامل چهار خانوادهphytoseiidae ، podocinidae،blattisociidae و otopheidomenidae است. در سال های 1389 و 1390 از این دو بالاخانواده از شهرستان زنجان (شمال غرب ایران)، حدود 800 نمونه جمع آوری شد. نمونه گیری از خاک، چوب های پوسیده، قارچ ها، آشغال و کودهای حیوانی به انجام رسید. بعد از اینکه کنه ها ب...
to f i nd the. inc idence of phenylketonuria(pku) i n teheran a study was conduc ted i n di ffe rent hospitals of te heran f or a period of six years (1974-1980) by screening 8633 neona t e s wit h guthrie-test . (4) . among t hese neona tes ,seven had minor hyperphenylalaninemia(5 with 6 mg% and 2 with 8 mg%) . there was only one ca se with definite hyperphenylalaninemia(more t han 20 mg%) .
one of the most important number sequences in mathematics is fibonacci sequence. fibonacci sequence except for mathematics is applied to other branches of science such as physics and arts. in fact, between anesthetics and this sequence there exists a wonderful relation. fibonacci sequence has an importance characteristic which is the golden number. in this thesis, the golden number is observed ...
A spectrophotometric study concerning the interaction between Trimethoprim (TMP) ,Sulfamethoxazole (SFMx), as n-donor and 2,3-dichloro-5,6- dicyano-P-benzoquinine (DDQ) and chloranilic acid (CA) as π-acceptor were been performed at 25°C. The results of interaction of CA and DDQwith TMP indicate the formation of a 1:1, 1:2, charge transfer complexes through non equilibrium reactions. In the case...
The objective of this study was determining the most limiting plant growth factor in the wheat root zone dominated by illite in clay fraction and a high specific surface with ample ammonium acetate extractible potassium. A completely randomized block design with 4 replicates was used in Seyed Miran Research Farm (Gorgan) during 2009-2010 growing season. Treatments were mineral fertilizers (to a...
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