نتایج جستجو برای: and cl

تعداد نتایج: 16831609  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده شیمی 1392

پیوندهای غیرکوالانسی مدلی از برهم کنش های درون ملکولی و بین ملکولی هستند که به دلیل نیروهای الکتروستاتیک و نیروهای لاندنی میان اتم های مختلف بوجود می آیند. پیوند هالوژنی به برهم کنش میان اتم هالوژن و گونه ی الکترون دهنده نسبت داده می شود. این واقعیت که هم اتم هالوژن و هم گونه ی الکترون دهنده دارای بار منفی هستند، برهم کنش های میان این دو بار منفی را چالش برانگیز کرده است. دو مفهوم "حفره ی سیگما...

Journal: :American journal of physiology. Endocrinology and metabolism 2014
G Andres Contreras Yun-Hee Lee Emilio P Mottillo James G Granneman

Brown adipocytes (BA) generate heat in response to sympathetic activation and are the main site of nonshivering thermogenesis in mammals. Although most BA are located in classic brown adipose tissue depots, BA are also abundant in the inguinal white adipose tissue (iWAT) before weaning. The number of BA is correlated with the density of sympathetic innervation in iWAT; however, the role of cont...

Journal: :research in applied linguistics 2016
gholam reza zarei maryam darakeh niloofar daneshkhah

this study investigated the effect of applying the dynamic system theory (dst) and cognitive linguistics (cl) insights into grammar instruction on efl learners’ learning of english prepositions and learner autonomy. sixty iranian efl learners at the lower-intermediate level of language proficiency were randomly assigned to 1 experimental and 1 control group. the 2 groups filled out an autonomy ...

Maryam Heidarpour, Mohamad Chaichi Seyed Azizi

A sensitive and fast chemiluminescence (CL) method has been described for the direct determination of atropine. The method is based on the quenching effect of atropine on the CL signals of the luminol– H2O2 reaction catalyzed by hemin in an alkaline medium. Hemin could strongly enhance the chemiluminescence of the luminol–H2O2 system. The luminophor of the luminol–H2O2–hemin CL system was ident...

Journal: :caspian journal of chemistry 2014
seyed naser azizi mohamad javad chaichi maryam heidarpour

a sensitive and fast chemiluminescence (cl) method has been described for the direct determination of atropine. the method is based on the quenching effect of atropine on the cl signals of the luminol– h2o2 reaction catalyzed by hemin in an alkaline medium. hemin could strongly enhance the chemiluminescence of the luminol–h2o2 system. the luminophor of the luminol–h2o2–hemin cl system was ident...

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