نتایج جستجو برای: doping

تعداد نتایج: 26107  

2016
Dorota E Starzak Stuart J Semple

Objective: Despite the prevalence of doping in sport and the need for doping prevention strategies, information about doping awareness among medical professionals is limited. The aim of this pilot study was to investigate the knowledge and attitude of South African pharmacists (Ps) and general practitioners (GPs) towards doping in sports. Methods: An online survey questionnaire was completed by...

Journal: :Journal of mass spectrometry : JMS 2008
Peter Hemmersbach

Mass spectrometry has played a decisive role in doping analysis and doping control in human sport for almost 40 years. The standard of qualitative and quantitative determinations in body fluids has always attracted maximum attention from scientists. With its unique sensitivity and selectivity properties, mass spectrometry provides state-of-the-art technology in analytical chemistry. Both anti-d...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2013
Takumi Yamaguchi Ikuo Horio Ryouta Aoki Noboru Yamashita Mamoru Tanaka Fumio Izushi Yoshirou Miyauchi Hiroaki Araki

In 2009, the Japan Anti-Doping Agency (JADA) established Sports Pharmacist-a system for certified pharmacists. There are many over-the-counter drugs that contain prohibited substances in Japan, and they are easily available. In Japan, most doping violations are committed when athletes unintentionally take prohibited substances. Therefore, the Sports Pharmacist has a vital role in promoting the ...

Journal: :The International journal on drug policy 2015
Andrea Petróczi Susan H Backhouse Vassilis Barkoukis Ralf Brand Anne-Marie Elbe Lambros Lazuras Fabio Lucidi

One of the fundamental challenges in anti-doping is identifying athletes who use, or are at risk of using, prohibited performance enhancing substances. The growing trend to employ a forensic approach to doping control aims to integrate information from social sciences (e.g., psychology of doping) into organised intelligence to protect clean sport. Beyond the foreseeable consequences of a positi...

Journal: :Substance Abuse Treatment, Prevention, and Policy 2008
Andrea Petróczi Eugene V Aidman Tamás Nepusz

BACKGROUND Understanding athletes' attitudes and behavioural intentions towards performance enhancement is critical to informing anti-doping intervention strategies. Capturing the complexity of these attitudes beyond verbal declarations requires indirect methods. This pilot study was aimed at developing and validating a method to assess implicit doping attitudes using an Implicit Associations T...

ژورنال: :international journal of new chemistry 0

electrical sensitivity of a boron nitride nanotube (bnnt) was examined toward aniline (c6h5nh2) molecule by using density functional theory (dft) calculations at the b3lyp/6-31g (d) level, and it was found that the adsorption energy (ead) of aniline on the pristine nanotubes is a bout -19.03kcal/mol. but when nanotube has been doped with si and al atomes, the adsorption energy of aniline molecu...

2014
Wenmei Ming Feng Liu

We have demonstrated that the island nucleation in the initial stage of epitaxial thin film growth can be tuned by substrate surface charge doping. This charge effect was investigated using spin density functional theory calculation in Fe-deposition on graphene substrate as an example. It was found that hole-doping can noticeably increase both Fe-adatom diffusion barrier and Fe interadatom repu...

2000
W. Lin S. P. Guo M. C. Tamargo G. F. Neumark

Delta doping techniques have been investigated to enhance the p-type doping of ZnSe. Tellurium was used as a codopant for improving the nitrogen doping efficiency. The net acceptor concentration (NA2ND) increased to 1.5310 18 cm using single d doping of N and Te ~N1Te!, while it was limited to 8310 cm by d doping of N alone. A promising approach was developed in which three consecutive d-doped ...

2016
Yoshitaka Kawasugi Kazuhiro Seki Yusuke Edagawa Yoshiaki Sato Jiang Pu Taishi Takenobu Seiji Yunoki Hiroshi M Yamamoto Reizo Kato

It is widely recognized that the effect of doping into a Mott insulator is complicated and unpredictable, as can be seen by examining the Hall coefficient in high Tc cuprates. The doping effect, including the electron-hole doping asymmetry, may be more straightforward in doped organic Mott insulators owing to their simple electronic structures. Here we investigate the doping asymmetry of an org...

2010
Javier Maquirriain

INTRODUCTION Tennis is a professional sport under a strict anti-doping control. However, since the first violation of the code, the positive cases have not been statistically studied. The objective of this study was to analyze doping offences in the international professional tennis circuit. METHODS All offences to the Doping Code committed by tennis players during 2003-2009 were collected fr...

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