Results 51 to 60 of about 31,354 (355)

Enhanced Oxidation and Thermal Shock Resistance of N‐type Mg2Si0.89(Sn0.1,Sb0.01) Thermoelectric Material via Cr0.9Si0.1 Coating

Advanced Engineering Materials, EarlyView.
Cr0.9Si0.1 protective coatings are developed to enhance the thermal‐shock and oxidation resistance of Mg2Si0.89(Sn0.1,Sb0.01) thermoelectric (TE) materials. The coating forms a dense and adherent barrier that suppresses oxygen diffusion and mitigates mechanical degradation during cyclic oxidation, demonstrating its potential to improve the long‐term ...
Mikdat Gurtaran, Zhenxue Zhang, Xiaoying Li, Hanshan Dong   +3 more
wiley   +1 more source

Investigation of social variables associated with the use of doping among Armenian athletes

Спортивная медицина: наука и практика, 2020
To improve the effectiveness of the fight against doping, it is necessary to assess the areas of risk of doping in various sports disciplines. Objective: to conduct a survey of Armenian athletes, to assess the impact of social variables on their attitude
A. Hovhannisyan, A. Sahakyan, G. Jalleh, R. Donovan   +3 more
doaj   +1 more source

Mechanically Deposited Wear‐Resistant Amorphous Zr55Cu30Al10Ni5 Coatings

Advanced Engineering Materials, EarlyView.
Mechanically deposited from glassy ribbons, the Zr55Cu30Al10Ni5 amorphous coating formed a hard, continuous layer on AISI 1010 steel, tripling substrate hardness, lowering friction, and reducing wear. Despite its rough surface, it showed friction and wear behavior comparable to the crystalline alloy, highlighting its strong potential as a durable ...
Tales Ferreira, Pietro Cazelatto Bortolini, André Luiz Vidilli, Paulo Wilmar Barbosa Marques, Jéferson Aparecido Moreto, Claudio Shyinti Kiminami, Walter José Botta, Claudemiro Bolfarini, Guilherme Yuuki Koga   +8 more
wiley   +1 more source

Olympic Games

Deutsche Zeitschrift für Sportmedizin, 2021
Unethical behaviors in sport are a matter of global concern. The current surge in reports on abuse of athletes across sports and all over the world is reminiscent of the doping scandals in the 1980s and 1990s that made many believe that doping was ...
Tuakli-Wosornu YA, Moses EC, Amick M, Grimm K   +3 more
doaj   +1 more source

Doping [PDF]

, 2012
Since centuries ago, man has always tried to find ways to improve human performance whilst suffering less in doing so. People who were thought to be the best were preferentially fed better diets and given treatments that were considered to be ...
Bonello Spiteri, Danica
core   +1 more source

Thermoelectric Modules Incorporating MgAgSb and Mg3(Sb,Bi)2 Synthesized Using a Melting Method

Advanced Engineering Materials, EarlyView.
A scalable synthesis method for a thermoelectric material of MgAgSb is established. A thermoelectric power module of MgAgSb/Mg3(Sb,Bi)2 is fabricated, showing the conversion efficiency of 7.4% at ΔT = 315 K. The performance is comparable to conventional Bi2Te3 modules when they are operated with an air‐cooled heat exchanger.
Kazuo Nagase, Hironori Ohshima, Kunihiro Kihou, Haruno Kunioka, Ushin Anazawa, Ryosuke Sakagami, Yosuke Goto, Masayuki Murata, Chul‐Ho Lee   +8 more
wiley   +1 more source

Doping Prevention in Sport: Overview of Anti-Doping Education Programmes

Baltic Journal of Sport and Health Sciences, 2020
Background. As doping can damage the sports industry, it is fundamental for athletes to engage in the anti-doping education programs and understand the anti-doping rules. The purpose of this article was to provide an overview of research focusing on anti-
Beatričė Sipavičiūtė, Saulius Šukys, Audronė Dumčienė   +2 more
doaj   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Exploring self-declared prohibited substance use in combat sports: The Serbian perspective

Exercise and Quality of Life
The exploratory study is grounded in field research, utilizing semi-structured interviews with active, former, and recreational athletes in combat sports.
Vuk Raonić, Ivana Milovanović, Roberto Roklicer, Marko Manojlović, Tatjana Trivić, Patrik Drid   +5 more
doaj   +1 more source

Doping in competition or doping in sport? [PDF]

British Medical Bulletin, 2008
Since ancient times, competitive athletes have been familiar with the use of ergogenic aids and they will probably continue to use unfair and harmful substances in future, because their inclination to victory, along with the mirage of glory and money, will probably overcome health and legal risks.We searched PubMed using the term doping over the period
LIPPI, Giuseppe, Franchini M, GUIDI, Giancesare   +2 more
openaire   +2 more sources