The researchers, directed by professors Alberto Fernández Gutiérrez and Antonio Segura Carretero, have designed an optical sensor that allows to determine the presence of propanolol (a beta inhibitor used as a performance-enhancing drug in the so-called precision sports, such as motor racing or archery) in urine.
The main contribution of their research work lies in the precision of this new system, cheaper, more accurate and, above all, faster that the old ones, as it can detect the presence of propanolol in just a few minutes, with an accuracy of 0.2 micrograms per litre.
Beta inhibitors are medicines that regulate the heart pace, slow down the cardiac frequency and stimulate the attention. They cause a reduction and improvement of pulse (reducing trembling), and they also have an anti-stress effect. Some of its undesirable effects are a sensation of permanent fatigue, a drop in arterial tension, muscular cramps, risk of psychical depression and sexual impotence if habitually and repeatedly consumed. Besides propanolol, other beta inhibitors are acebutonol, alprenolol, atenolol, labetalol, metoprolol, nadolol, oxprenolol and sotalol.
Their consumption has been banned by the IOC in precision sports such as chess, motor racing, billiards, bowling, air sports, winter sports (‘freestyle aerials’/’half-pipe’ jumping, ‘snowboard’ and ‘halfpipe/big air’), gymnastics, wrestling, motorcycling, pétanque, modern pentathlon, archery, ‘curling’ and sailing.
The ‘antidopping’ system designed by the scientists of the UGR [http://www.ugr.es] is part of the doctoral thesis ‘Development of fluorescent optosensors for the determination of pharmacological active principles and environmental pollutants in real samples’ [http://www.mcu.es/cgi-bin/TESEO/BRSCGI?CMD=VERDOC&BASE=TSEO&DOCN=000093558], carries out by Jorge F. Fernández Sánchez, another member of the research group which at present keeps on working on this research line.
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
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