نتایج جستجو برای: simple reaction time

تعداد نتایج: 2561403  

A Highly efficient protocol has been developed for the synthesis of 2-hydrazolyl-4-thiazolidinone derivatives installing a one pot three component coupling reaction of an aromatic aldehyde, thiosemicarbazide and maleic anhydride using guanidine hydrochloride as highly inexpensive and environmentally friendly catalyst under solvent free condition at 1200C with good to excellent yields, It offers...

Journal: :Brazilian Journal of Medical and Biological Research 2013

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده علوم انسانی 1390

this study investigated the effects of manipulating the cognitive complexity of tasks along +/- few elements and the time limits on l2 learners writing performance. to conduct the study, 60 iranian efl learners with two levels of proficiency, low and high intermediate, were selected and assigned to three groups based on the time devoted to task completion. the participants performed both a simp...

Journal: :iranian journal of pharmaceutical sciences 0
ismaeil haririan biomaterials research center (brc), tehran university, tehran, iran. department of pharmaceutics, school of pharmacy, tehran university of medical sciences, tehran, iran alireza nomani department of pharmaceutics, school of pharmacy, zanjan university of medical sciences, zanjan, iran. department of pharmaceutics, school of pharmacy,tehran university of medical sciences, tehran, iran rassoul dinarvand department of pharmaceutics, school of pharmacy, tehran university of medical sciences, tehran, iran. medical nanotechnology research centre, school of pharmacy, tehran university of medical sciences, tehran, iran. ebrahim azizi molecular research laboratory, department of toxicology, , tehran university of medical sciences, tehran, iran. mohsen amini department of medicinal chemistry, tehran university of medical sciences, tehran, iran tarane gazori department of pharmaceutics, school of pharmacy,tehran university of medical sciences, tehran, iran. jaleh barar

dendrimer based nanostructures have been increasingly used for delivery of drugs/genes. these nanosystems, as non-viral gene delivery systems, were shown to have relatively high transfection efficiency despite exerting somewhat cytotoxicity. in this current investigation, poly(amido amine) (pamam) dendrimers, generation  (g) zero to five, pegylated pamam g3 and a new quaternized pamam g4 were s...

اصغر کیان زاده امیر کساییان حسن عبدی, سیدمصطفی طیبی ثانی, علی فهیمی نژاد

زمینه و هدف: زمان واکنش (RT یا Reaction Time) یکی از عوامل مهم تصمیم گیری و نشان دهنده سرعت پردازش اطلاعات (IP یا Information Process) است که می تواند بر اجرای مهارت های ورزشی اثرگذار باشد، ولی اختلاف آن در بین واکنش های بینایی و شنوایی زنان و مردان ورزشکار در هاله ای از ابهام است. هدف از مطالعه حاضر، مقایسه زمان واکنش ساده ( SRTیا Simple Reaction Time) و زمان واکنش انتخابی (CRT یا Choice React...

Journal: :iranian chemical communication 0
seyyedeh cobra azimi university of guilan kurosh rad-moghadam university of guilan

a practical and new method for the synthesis oxindole substituted pyrrolo[2,3-d]pyrimidines by the condensation of isatin, acetophenone and 6-amino-uracil under ultrasound irradiation conditions at 60 °c was described. the reaction was developed via a sequential tandem process to afford the oxindole substituted pyrrolo[2,3-d]pyrimidines in good to excellent yields. all reactions performed effic...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید