Results 81 to 90 of about 31,771 (300)

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

Detection of the GH analogue somatrogon in doping control urine samples by means of LC-HRMS/MS

Scientific Reports
Somatrogon is a synthetic growth hormone (GH) analog, whose misuse in sports is prohibited at all times. As analytical approaches complementary to existing immunological GH detection methods were considered beneficial for its detection in doping control ...
Katja Walpurgis, Andreas Thomas, Alexandra Rauer, Bettina Majer, Mitsuhiko Sato, Masato Okano, Maneera Al-Jaber, Wadha Abushareeda, Cristian-Gabriel Arsene, Hans Geyer, Mario Thevis   +10 more
doaj   +1 more source

Reverse–normal immunopurification: An effective approach for purifying recombinant erythropoietin from its analogues in doping analysis

Journal of Sport and Health Science
Background: Recombinant erythropoietin (rEPO) is commonly used in therapy but may be abused in sports to enhance endurance. In doping analysis, rEPO can be detected in human urine or blood samples at picogram (pg) levels based on its slightly higher ...
Sen He, Die Wu, Chengshuai Niu, Xinchao Liu, Jie Zhang, Liangzhi Xie, Laurent Martin, Kaifeng Liu, Xinmiao Zhou, Lisi Zhang   +9 more
doaj   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Medicalization of Sport? A Mixed-Method Study on the Use of Medications in Elite Ice Hockey

Sports
Ice hockey is a high-risk sport known for its dominant macho culture. The purpose of this study was to examine experiences surrounding medication use among male, elite ice hockey players in Norway. A mixed-method design was employed, which first examined
Sofie Christensen, Astrid Gjelstad, Ingunn Björnsdottir, Fredrik Lauritzen   +3 more
doaj   +1 more source

Ventricular androgenic-anabolic steroid-related remodeling: an immunohistochemical study [PDF]

, 2017
Background: Several fatal cases of bodybuilders, following a myocardial infarction after long exposure to androgenicanabolic steroids (AAS), are reported. In recent years, evidence has emerged of cases of heart failure related to AAS consumption, with no
Cecchi, Rossana, Ciallella, Costantino, DI LUCA, Natale Mario, Kimura, Akihiko, Kondo, Toshikazu, Muciaccia, Barbara, Nosaka, Mizuho, Sestili, Cristina   +7 more
core   +1 more source

Metachromatic Butterfly Bile Pigments for Multi‐Level Optical Security Films

Advanced Functional Materials, EarlyView.
Bio‐derived optical security materials are manufactured by embedding butterfly‐based pigments in polymer films. Tunable color and fluorescence responses arise from concentration‐controlled metachromasy, enabling spatially encoded patterns with distinct visible, UV‐active, and spectral signatures.
Limin Wang, Bodo D. Wilts
wiley   +1 more source

Revealing the Hidden Role of Cd in p‐Type Mg3Sb2: Enhanced Thermoelectric Performance by Grain Boundary Segregation Engineering

Advanced Functional Materials, EarlyView.
The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li, Deming Dong, Xiaoyu Yang, Jun Qian, Mengruizhe Kong, Han Wan, Ni Ma, Wei Bai, Pengfei Nan, Binghui Ge, Jiming Song, G. Jeffrey Snyder, Yuan Yu   +12 more
wiley   +1 more source

Associations between the performance of vertical jump and accelerative sprint in elite sprinters

Frontiers in Bioengineering and Biotechnology
ObjectiveThe purpose of this study is to investigate the relationship between components of the Sprint Profile during acceleration and kinematic and kinetic measures of the Counter Movement Jump (CMJ) and Squat Jump (SJ), to determine whether jump ...
Junliang He, Ming Li, Qiuping Zhang, Zhiye Zhang   +3 more
doaj   +1 more source

The sources and interpretation of Olympic Law [PDF]

, 2012
In this article, Mark James and Guy Osborn discuss how the relationships between the various members of the Olympic Movement are governed by the Olympic Charter and the legal framework within which an edition of the Olympic Games is organised.
Alexandre, Guy Osborn, Mark, Mark, Mark James, Miah, Steve   +6 more
core   +2 more sources