نتایج جستجو برای: doping in sports

تعداد نتایج: 16988742  

2018
James Hopker Yorck O. Schumacher Matthew Fedoruk Jakob Mørkeberg Stéphane Bermon Sergei Iljukov Reid Aikin Pierre-Edouard Sottas

1 Endurance Research Group, University of Kent, Chatham, United Kingdom, 2 Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar, United States Anti-Doping Agency, Colorado Springs, CO, United States, 4 Anti-Doping Denmark, Brøndby, Denmark, 5 LMAHESS Nice, France and Monaco Institute of Sports Medicine and Surgery, University Cote d’Azur, Monaco, France, 6 KIHU—Research Institute for O...

Journal: :iranian journal of public health 0
hooman angoorani farzin halabchi

background: the high prevalence and potential side effects of anabolic-androgenic steroids (aas) misuse by athletes has made it a major public health concern. epidemiological studies on the abuse of such drugs are mandatory for developing effective preventive drug control programs in sports community. this study aimed to investigate the prevalence of aas abuse and their association with some ps...

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 ...

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...

Journal: :Nature materials 2009
H Luetkens H-H Klauss M Kraken F J Litterst T Dellmann R Klingeler C Hess R Khasanov A Amato C Baines M Kosmala O J Schumann M Braden J Hamann-Borrero N Leps A Kondrat G Behr J Werner B Büchner

The competition of magnetic order and superconductivity is a key element in the physics of all unconventional superconductors, for example in high-transition-temperature cuprates, heavy fermions and organic superconductors. Here superconductivity is often found close to a quantum critical point where long-range antiferromagnetic order is gradually suppressed as a function of a control parameter...

2013
A. Tiberj M. Rubio-Roy M. Paillet J. -R. Huntzinger P. Landois M. Mikolasek S. Contreras J. -L. Sauvajol E. Dujardin A. -A. Zahab

The ultimate surface exposure provided by graphene monolayer makes it the ideal sensor platform but also exposes its intrinsic properties to any environmental perturbations. In this work, we demonstrate that the charge carrier density of graphene exfoliated on a SiO2/Si substrate can be finely and reversibly tuned between hole and electron doping with visible photons. This photo-induced doping ...

2015
Nuttachai Jutong Ulrich Eckern Thomas Mairoser Udo Schwingenschlögl

The effect of Gd doping and O deficiency on the electronic structure, exchange interaction, and Curie temperature of EuO in the cubic and tetragonal phases is studied by means of density functional theory. For both defects, the Curie temperature is found to exhibit a distinct maximum as a function of the defect concentration. The existence of optimal defect concentrations is explained by the in...

Journal: :Physical review letters 2007
D Qian D Hsieh L Wray E Morosan N L Wang Y Xia R J Cava M Z Hasan

A superconducting state (T(c) approximately 4.2 K) has very recently been observed upon successful doping of the charge-density-wave (CDW) ordered triangular lattice TiSe(2), with copper. Using state-of-the-art photoemission spectroscopy we identify, for the first time, momentum-space locations of doped electrons that form the Fermi sea of the superconductor. With doping, we find that kinematic...

2014
G. Seibold C. Di Castro M. Grilli J. Lorenzana

High-temperature superconductors exhibit a characteristic hourglass-shaped spectrum of magnetic fluctuations which most likely contribute to the pairing glue in the cuprates. Recent neutron scattering experiments in strongly underdoped compounds have revealed a significant low energy anisotropy of these fluctuations which we explain by a model in which topological defects of the antiferromagnet...

2015
Degao Wang Yuying Zhang Cheng Peng Jianqiang Wang Qing Huang Shao Su Lianhui Wang Wei Huang Chunhai Fan

An effective strategy to overcome the morphology evolution of hematite nanorods under high-temperature activation is presented, via tuning the crystallinity and sintering temperature by substrate modification. It is demonstrated that the as-prepared doping-free hematite nanorods with fine nanostructures obtain a significantly higher photocurrent density of 2.12 mA cm-2 at 1.23 V versus RHE, due...

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