نتایج جستجو برای: روش EPR

تعداد نتایج: 378684  

Erik Schubert Yaser NejatyJahromy,

Electron Paramagnetic Resonance (EPR) spectroscopy, also known as Electron Spin Resonance(ESR) especially among physicists, is a strong and versatile spectroscopic method forinvestigation of paramagnetic systems, i.e. systems like free radicals and most transition metalions, which have unpaired electrons. The sensitivity and selectivity of EPR are notable andintriguing as compared to other spec...

ژورنال: :سنجش و ایمنی پرتو 0
عباس نوری abbas noori department of physics, taft branch, islamic azad university, taft, iranدانشکده فیزیک، دانشگاه آزاد اسلامی واحد تفت، تفت، ایران فرهود ضیائی farhood ziaie radiation application school, nuclear science and technology institute, tehran, iran.تهران، پژوهشکده کاربرد پرتوها، پژوهشگاه علوم و فنون هسته ای، سازمان انرژی اتمی ایران، صندوق پستی: 3486-11365 مصطفی شفائی mostafa shafaei young researchers and elites club, science and research branch, islamic azad university, tehran, iran.دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، باشگاه پژوهشگران جوان و نخبگان، تهران، ایران.

در این کار پژوهشی اثر کربن­دار کردن به روش جانشینی گروه عاملی کربنات  (co3-2) در ترکیب شیمیایی مواد اولیه سازنده hap بر پاسخ epr ماده هیدروکسی اپتایت از دیدگاه دزیمتری بررسی شده است. ابتدا نانو پودر هیدروکسی اپتایت مصنوعی به روش رسوب­دهی شیمیایی با جایگزینی بنیاد کربنات (co3-2) در جایگاه گروه عاملی فسفات (po4-3) در ساختار هیدروکسی اپتایت استیکیومتری (ca10(po4)6(oh)2) تولید شد. مشخصه یابی hap به...

Journal: :progress in biological sciences 2014
yaser nejatyjahromy erik schubert

electron paramagnetic resonance (epr) spectroscopy, also known as electron spin resonance(esr) especially among physicists, is a strong and versatile spectroscopic method forinvestigation of paramagnetic systems, i.e. systems like free radicals and most transition metalions, which have unpaired electrons. the sensitivity and selectivity of epr are notable andintriguing as compared to other spec...

Journal: Nanomedicine Journal 2019
Hasanain Gomhor J. Alqaraghuli Kamran Mansouri, Ronak Rafipour, Soheila Kashanian,

Objective(s): Nanocarriers are drug delivery vehicles, which have attracted the attention of researchers in recent years, particularly in cancer treatment. The encapsulation of anticancer drugs using protein nanocages is considered to be an optimal approach to reducing drug side-effects and increasing the bioavailability of anticancer drugs. Epirubicin (EPR) is an active chemotherapeutic medica...

Journal: Nanochemistry Research 2016

Following our interest in reaching for a molded rubber article with possible detergent contact applications, durable silver nanopowder (AgNP) is synthesized by arc discharge, then mixed with varying ratios of ethylene propylene rubber (EPR), affording novel AgNP@EPR nanocomposites. X-ray diffraction (XRD) patterns of AgNP as well as AgNP@EPR show no trace of impurity, while scanning electron mi...

ژورنال: :سنجش و ایمنی پرتو 0
خدیجه رضایی ابراهیم سرایی khadijeh rezaee-ebrahim-saraee *facility of advance sciences and technologies, department of nuclear engineering, university of isfahan, isfahan, iran. p. o. box: 81746-73441دانشکده علوم و فناوری های نوین، گروه مهندسی هستهای حمید عباسی hamid abbasi *facility of advance sciences and technologies, department of nuclear engineering, university of isfahan, isfahan, iran. p. o. box: 81746-73441دانشکده علوم و فناوری های نوین، گروه مهندسی هستهای ایرج جباری iraj jabbari *facility of advance sciences and technologies, department of nuclear engineering, university of isfahan, isfahan, iran. p. o. box: 81746-73441دانشکده علوم و فناوری های نوین، گروه مهندسی هستهای

خواص دزیمتری نواقص بلوری القا شده در دزیمترهای میله ای نانوبلور استرانسیوم سولفات خالص و آلاییده با دیسپرسیوم به مقدار 2/0 درصد مولی برای تابش گاما با استفاده از روش تشدید پارامغناطیسی الکترون (epr) در محدوده ی دزهای بالا در بازه ی 10 تا 15000 گری بررسی شد. مهم ترین سیگنال های epr با فاکتور تمایز دهنده ی طیف سنجی (g-value) 0036/2g=، 0090/2g=، ، 0160/2g=، مشاهده شدند که به ترتیب مربوط به قله های...

Journal: :environmental health engineering and management 0
mohammad shakerkhatibi department of environmental health engineering, school of health, tabriz university of medical sciences, tabriz, iran nahideh mohammadi student research committee, tabriz university of medical sciences, tabriz, iran khaled zoroufchi benis environmental engineering research center, faculty of chemical engineering, sahand university of technology, tabriz, iran alireza behrooz sarand department of chemical engineering, urmia university of technology, urmia, iran esmaeil fatehifar environmental engineering research center, faculty of chemical engineering, sahand university of technology, tabriz, iran ahmad asl hashemi department of environmental health engineering, school of health, tabriz university of medical sciences, tabriz, iran

background: forecasting of air pollutants has become a popular topic of environmental research today. for this purpose, the artificial neural network (aan) technique is widely used as a reliable method for forecasting air pollutants in urban areas. on the other hand, the evolutionary polynomial regression (epr) model has recently been used as a forecasting tool in some environmental issues. in ...

Journal: :nanochemistry research 2016
marzieh miranzadeh mohammad zaman kassaee leila sadeghi mohsen sadroddini mehdi razzaghi kashani

following our interest in reaching for a molded rubber article with possible detergent contact applications, durable silver nanopowder (agnp) is synthesized by arc discharge, then mixed with varying ratios of ethylene propylene rubber (epr), affording novel agnp@epr nanocomposites. x-ray diffraction (xrd) patterns of agnp as well as agnp@epr show no trace of impurity, while scanning electron mi...

Amin Reyhani Fatemeh Rekabdar Mahmood Hemmati Mehdi Ahmadi

In the present work, the effects of operating conditions including pH, transmembrane pressure, oil concentration, and temperature on fouling resistance and the rejection of turbidity for a polymeric membrane in an ultrafiltration system of wastewater treatment were studied. A new modeling technique called evolutionary polynomial regression (EPR) was investigated. EPR is a method based on regres...

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