نتایج جستجو برای: Doping

تعداد نتایج: 26107  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1390

در این تحقیق، ساختار لیزرهای نقطه کوانتومی، مشخصه ها، نواقص، و همچنین فاکتور های محدود کننده سرعت مدولاسیون بالا و تکنولوژی های کلیدی برای بهبود عملکرد آن بیان می شوند. با بررسی اثر پهن شدگی گرمایی حفره ها که ناشی از جرم موثر سنگین ، حفره ها در نوار ظرفیت لیزر های نقطه کوانتومی است ، نشان می دهیم که یکی از عوامل مهم در محدود کردن سرعت مدولاسیون لیزرهای نقطه کوانتومی ، نزدیکی بیش از اندازه تراز ...

Journal: :علوم زیستی ورزشی 0
فرزین حلبچی دکتری، استادیار گروه پزشکی ورزشی دانشگاه علوم پزشکی تهران علیرضا استقامتی دانشیار گروه داخلی دانشگاه علوم پزشکی تهران محمدعلی منصورنیا دستیار اپیدمیولوژی

nowadays, doping is an intricate dilemma for athletes. wrestling is the domestic, national and popular sport in iran. meanwhile, the prevalence of drug abuse in wrestling is high due to its power-demanding nature. so, we decided to evaluate the knowledge of club wrestlers of tehran about doping and their estimates of current prevalence in the country. in a cross sectional study, 426 wrestlers w...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
leyla pasharavesh assistant professor in biostatistics in kermanshah university of medical sciences marziyeh ramandi assistant professor in biostatistics in kermanshah university of medical sciences sepideh khoshboo assistant professor in biostatistics in kermanshah university of medical sciences mansour rezaee associated professor in nephrology in tehran university of medical sciences. samina rezvani assistant professor in biostatistics in kermanshah university of medical sciences mohammad reza abbasi associated professor in nephrology in tehran university of medical sciences.

introduction: today sport is one of the important social criterion and athletes are trying to be a champion. therefore, there is an increase in misuse of doping agents especially anabolic-androgenic steroid. this study was carried out to determine the prevalence of the doping agents' abuse among male bodybuilders' and to access their knowledge about their side effects in kermanshah gymnasiums i...

Journal: :وقایع علوم کاربردی ورزش 0
delia nica-badea faculty of medicinal and behavioral sciences, department of sport and health, constantin brancusi university, târgu-jiu, romania

doping is the use of drug for the purpose of improving performance in general and sports performance in particular. rejection or acceptance of the use of banned substances by athletes is determined by internal factors that are subjective and external or social. against this background, the present study examined social risk factors as determinants of intention (temptation) to use banned substan...

آزاده اعظمی, , محسن حکیمی, , مهین اشراقی, , هادی سلامتی, , پرویز کاملی, ,

 In this paper after introduction of manganites, we have studied the effect of particle size and doping on structural, magnetic and magnetoresistance of LSMO manganite samples. The magnetoresistance measurements show that, by decreasing the particle size LFMR increases. Also the results show that the LFMR increases at low doping levels and decreases at high doping levels. The spin dependent tun...

بهرامی, امیر , زرگر شوشتری, مرتضی , فربد, منصور ,

In this research, the effect of silver doping on 2223 phase of ceramic superconductor Bi1.6Pb0.4Sr2Ca2Cu3Oδ (BSCCO) has been investigated. To synthesis the samples, we used solid-state reaction method and two different doping methods, namely, doping samples during making processes (batches No.1) and doping samples after making superconductor (batch No.2). With doping Ag to BSCCO, the criti...

دادمهر, وحید , صائب , فاطمه , فلاحتی, سمیه ,

  Samples of YBa2Cu3-xAgxOy with x=0, 0.1, 0.15, 0.2, 0.3 and samples of YBa2Cu3-xAlxOy with x=0, 0.01, 0.02, 0.03 and 0.045 are prepared by the sol-gel method. Structural and superconducting properties of samples are studied by electrical resistivity (R-T), X-ray diffraction (XRD) and scanning electron microscopy (SEM). All the samples show transition to superconducting state and the transitio...

2017
Ian D. Boardley Alan L. Smith John P. Mills Jonathan Grix Ceri Wynne

Evidence associating doping behavior with moral disengagement (MD) has accumulated over recent years. However, to date, research examining links between MD and doping has not considered key theoretically grounded influences and outcomes of MD. As such, there is a need for quantitative research in relevant populations that purposefully examines the explanatory pathways through which MD is though...

Journal: :journal of physical & theoretical chemistry 2013
a. nouri a. fakhri arezu nouri

metal oxides play a very important role in many areas of chemistry, physics and materials science.the metal elements are able to form a large diversity of oxide compounds. in this investigation, wesynthesis sno2 and c,n,s-tridoped sno2 nanoparticles by precipitation method. the synthesizedsno2 and c,n,s-tridoped sno2 nanoparticles were characterized by instrumental analysis methods,such as x-ra...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2017
Takashi Imanishi Takayoshi Kawabata Akira Takayama

In 2009, the Japan Anti-Doping Agency (JADA) established the "Sports Pharmacist Accreditation Program" to prevent doping in sports. Since then, anti-doping activities in Japan have been attracting attention. In this study, we investigated research about the current status of doping from 2007 to 2014 in Japan to make anti-doping activities more concrete, and we also discussed future anti-doping ...

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