مرور بر اساس عنوان
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08 ارزیابی تأثیر سرریز فناوری ناشی از سرمایهگذاری مستقیم خارجی بر بهرهوری نیروی کار در صنایع کارخانهایی ایران
(دانشگاه پیام نورPayame Noor University, 2017-12-22)براساس نظر بسیاری از اقتصاددانان، شکاف قابل توجه درآمد سرانه بین کشورهای توسعهیافته و در حال توسعه ناشی از شکاف بزرگ فناوری بین آنها است. نتایج مطالعات تجربی بیان میکنند، اگر کشورهای درحالتوسعه با محدودیت توسعه فناوری ...
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$(-1)$-Weak Amenability of Second Dual of Real Banach Algebras
(University of Maragheh, 2018-11-01)Let $ (A,| cdot |) $ be a real Banach algebra, a complex algebra $ A_mathbb{C} $ be a complexification of $ A $ and $ | | cdot | | $ be an algebra norm on $ A_mathbb{C} $ satisfying a simple condition together with the ...
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(1)خراسان مجموعه حرم حضرت رضا (ع)
(دانشکده ادبیات و علوم انسانی, 1998-09-23)The shrine complex of Imam - Reza, in Mashhad is the most important religious complex in Iran and consists of 10 monuments dating from early Islamic time to the present century.The tomb chamber of Imam - Reza is square in ...
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1,3-Dibromo-5,5-dimethylhydantoin: a versatile catalyst for synthesis of 3,3-bis(indolyl)oxindoles
(Ilam, Payame Noor University, 2013-10-01)A condensation of various isatins with indole derivatives has been carried out in the presence of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) as catalyst at 50 °C in ethanol in order to form 3,3-bis(indolyl) oxindoles. The ...
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1,3-Dibromo-5,5-dimethylhydantoin: a versatile catalyst for synthesis of 3,3-bis(indolyl)oxindoles
(Ilam, Payame Noor University, 2013-10-01)A condensation of various isatins with indole derivatives has been carried out in the presence of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) as catalyst at 50 °C in ethanol in order to form 3,3-bis(indolyl) oxindoles. The ...
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1,3-Dibromo-5,5-dimethylhydantoin: a versatile catalyst for synthesis of 3,3-bis(indolyl)oxindoles
(Ilam, Payame Noor University, 2013-10-01)A condensation of various isatins with indole derivatives has been carried out in the presence of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) as catalyst at 50 °C in ethanol in order to form 3,3-bis(indolyl) oxindoles. The ...
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1,3-Dichloro-5,5-dimethyl hydantoin and Poly N,N′-dibromo-N-ethyl naphthyl-2,7-disulfonamide as efficient catalysts for the methoxymethylation of alcohols under solvent-free conditions
(Ilam, Payame Noor University, 2017-07-01)Methoxymethylation of a variety of alcohols was performed using formaldehyde dimethyl acetal in the presence of 1,3-dichloro-5,5-dimethyl hydantoin [DCDMH] and Poly N,N′-dibromo-N-ethyl naphthyl-2,7-disulfonamide [PBNS] ...
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1,3-Disulfonic acid imidazolium hydrogen sulfate {[Dsim]HSO4} as a highly efficient, recyclable and green catalyst for the preparation of α,α´-bis(arylidene)cycloalkanones
(Ilam, Payame Noor University, 2016-01-01)A highly efficient and simple method for the preparation of α,α´-bis(arylidene)cycloalkanones under solvent-free conditions has been developed. The crossed-aldol condensation of cycloalkanones (1 eq.) with arylaldehydes ...
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1-1 بررسی اثر نانوصفحات گرافن اکسید بر عملکرد آفتکش زیستی Bacillus thuringiensis
(پردیس کشاورزی و منابع طبیعی دانشگاه تهران -موسسه تحقیقات کنترل بیولوژیک آفات و بیماریهای گیاهی, 2018-03-21)حشرهکشهای زیستی مبتنی بر باکتری Bacillus thuringiensis(Bt) مهم‌ترین و پرکاربردترین عوامل کنترل زیستی حشرات آفت در جهان هستند. یکی از مهترین عواملی که باعث غیرفعال شدن باکتری Bt در طبیعت می شود، اشعه فرابنفش است. حفظ مقاومت ...
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1-Carboxymethyl-3-methylimidazolium chloride {[cmmim]Cl} as an efficient catalyst for the solvent-free synthesis of bis(indolyl)methanes
(Ilam, Payame Noor University, 2014-07-01)1-Carboxymethyl-3-methylimidazolium chloride {[cmmim]Cl} is utilized as a highly efficient and reusable catalyst for the synthesis of bis(indolyl)methanes by the condensation reaction of indole with arylaldehydes under ...
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1-D and 2D-NMR assignments of nigricin from Iris imbricata
(School of Pharmacy, Shahid Beheshti University of Medical Sciences, 2005-10-01)Ethanolic crude extract of I. imbricata Lindl. (Iridaceae) was subjected to column chromatography on silica gel with varying portions of MeOH: CHCl3. Nigicin (irisolone) was isolated and its identification carried out by ...
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The 10th Annual Meeting, Iranian Society of Dermatology, Tehran, 16-18 June 2010
(Iranian Society of Dermatology, 2010-07-01)
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A 12 years old boy with erythematous hyperkeratotic plaques on the palms and soles
(Iranian Society of Dermatology, 2013-04-01)A 12 years old boy, diagnosed with psoriasis since childhoodwas referred to the dermatology clinic of Aleppo UniversityHospital,Syria with the chief complaint of erythematoushyperkeratotic lesions on the palms and soles.
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A 13-Year Retrospective Study on Toxic Alcohol Poisoning in Middle Urals, Russia
(Mashhad University of Medical Sciences, 2015-03-01)Background: Toxic alcohol poisonings are responsible for high mortality and morbidity in Russia. This study was aimed to evaluate the trends of harmful ethanol (EtOH) drinking as well as methanol (MeOH), isopropanol (IPA) ...
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A 13.5- Year Old Boy with Abdominal Pain and Weight Loss and Chronic Intussusception
(Mashhad University of Medical Sciences, 2017-11-01)We present a 13.5 year old boy with chronic intussusception that was misdiagnosed as Crohn disease and received treatment for the wrong diagnosis. Because his condition didn't improve, more work-ups were performed and the ...
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131I-MIBG imaging in evaluation of neuro-endocrine (APUD) tumors [Persian]
(Research Center for Nuclear Medicine (Tehran University of Medical Sciences), 1995-01-01)In this study, l-131-MIBG imaging was performed in 44 patients with clinical suspicion of tumors originating from neuro-endocrine system. The patients were referred to our department following plasma and urinary measurement ...