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Doping control of athletes

TrAC Trends in Analytical Chemistry, 1988
History The origin of the word doping is not certain. It first appeared in the English dictionaries at the end of the nineteenth century. The first reference to the use of doping by athletes was in 1864 during swimming competitions that were held in the canals of Amsterdam. The use of what is known as a ‘speedball’, a mixture of heroine and cocaine, by
Jong, E.G. de, Maes, R.A.A., Rossum, J.M.   +2 more
openaire   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Stable carbon isotope discrimination by human 3-hydroxy-3-methylglutaryl-coenzyme A reductase

Journal of Lipid Research, 2008
The aim of this study was to investigate the possible existence and magnitude of stable carbon isotope discrimination by human 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR). The catalytic portion of HMGR was expressed and purified.
Svena M. Lüdke, Ulrich Flenker, Wilhelm Schänzer, Dietmar Schomburg   +3 more
doaj   +1 more source

Additive Manufacturing of Alumina‐Reinforced Elastomers

Advanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani, Zongwen Fu, Robert Göstl, Hamed Shokri, Carmine Putignano, Gianluca Percoco, Bilal Gökce   +6 more
wiley   +1 more source

Generic sample preparation combined with high-resolution liquid chromatography- time-of-flight mass spectrometry for unification of urine screening in doping-control laboratories [PDF]

, 2010
A unification of doping-control screening procedures of prohibited small molecule substances—including stimulants, narcotics, steroids, ß2-agonists and diuretics—is highly urgent in order to free resources for new classes such as banned proteins ...
Georgakopoulos, C.G., Stolker, A.A.M., C. Georgakopoulos, Peters, R.J.B., Oosterink, J.E., Nielen, M.W.F., R. J. B. Peters, M. W. F. Nielen, J. E. Oosterink, A. A. M. Stolker   +9 more
core   +1 more source

Multilayer Self‐Limiting Electrospray Deposition via Stepped Voltage Bias

Advanced Engineering Materials, EarlyView.
Self‐limiting electrospray deposition (SLED) uses a high voltage to generate and deposit a charged payload on a target surface. The coating retains its charge, repelling newly arriving material. SLED thickness can be decreased by applying a secondary bias to the target.
Madhuri Deb, S. Rahman Pejman, Alexander Jakimowicz, Jonathan P. Singer   +3 more
wiley   +1 more source

Novel boronate affinity molecularly imprinted nanomaterials for selective dispersive magnetic solid-phase extraction of catecholamines from equine urine

Talanta Open
In this study, we developed catechol-imprinted magnetic molecularly imprinted polymers (Ca-DFFPBA-MMIPs) via a dual-affinity strategy combining boronate affinity and a two-step template immobilization protocol. The Ca-DFFPBA-MMIPs exhibited high affinity
Mei Liu, Xuehong Min, Die Hu, Xiaonan Zhang, Siyi Zhang   +4 more
doaj   +1 more source

Foodborne doping and supervision in sports

Food Science and Human Wellness, 2023
Cases of foodborne doping are frequently reported in sports events and can cause severe consequences for athletes. The foodborne doping can be divided into natural endogenous and artificially added foods according to the sources, including anabolic ...
Wei Chen, Xiaoyu Cheng, Yingnan Ma, Ning Chen   +3 more
doaj   +1 more source

Uniform Amorphization of Crystalline Silicon Surfaces Enabled by Deep Ultraviolet Femtosecond Laser Pulses

Advanced Engineering Materials, EarlyView.
Deep‐UV (258 nm) femtosecond pulses enable uniform amorphous silicon writing on Si(100)/(111) with a six‐fold larger fluence amorphization window than NIR methods. Optimized fluence and overlap yield 20–45 nm uniform and continuous amorphous layers. Microscopy shows sharp interfaces, and real‐time reflectivity reveals nanosecond melt–resolidification ...
Wissal Benali, Magali Gregoire, Matys Guyard, Tatiana Itina, David Grojo, Pol Sopeña   +5 more
wiley   +1 more source

Trema micranthum (L.) Blume as a new source of cannabinoids

Scientific Reports
Trema micranthum (Cannabaceae) has emerged as a promising new source of cannabinoids, including cannabidiol (CBD). Given the substantial medicinal demand for cannabinoids and the regulatory challenges associated with Cannabis sativa due to the presence ...
Rayssa Ribeiro, Yasmin Cunha da Silva, Ricardo Finotti, Gabriel Reis Alves Carneiro, Gustavo Ramalho Cardoso dos Santos, Henrique Marcelo Gualberto Pereira, Monica Costa Padilha, Valdir F. Veiga-Junior   +7 more
doaj   +1 more source