日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

Chinadaily.com.cn sharing the Olympic spirit
OLYMPICS/ Spotlight


British develops new steroid test technique
(Xinhua)
Updated: 2008-03-06 07:26

 

LONDON -- British researchers have developed a new, highly sensitive, anti-doping steroid test technique using hydropyrolysis, a technique that has previously been used for oil exploration.

Researchers at the University of Nottingham has refined the hydropyrolysis technique which uses high pressure environments to investigate the chemical structure and make-up of a sample to develop highly accurate tests for detecting levels of illicit steroids in the urine of athletes, according to a press release on Wednesday by the university.

The test procedure is already in the process of being commercialized and is expected to be ready for use in the 2012 Olympics, it said.

High pressure hydrogen is used to bombard the sample at pressures of 150 atmospheres and temperatures of up to 500 degrees Celsius, leaving sample molecules in a cleaner, less degraded state than other extraction techniques, thus allowing more accurate readings to be taken, according to the researchers.

Carbon isotopes are then measured, with the results showing the ratios of carbon 12 and carbon 13 in the sample whether geochemical or biological, Colin Snape, Professor of Chemical Technology and Chemical Engineering at the University, said.

"Steroids are produced naturally in the body, but they have a different ratio between carbon 13 and carbon 12 to those that have been introduced illicitly. By refining the measurements of these two isotopes we can produce a very accurate test for the presence of illegal steroids in athletes," he said.

"We are currently working with the World Anti-Doping Agency ( WADA) to develop the technique for trial and have entered into partnership with Strata Technology, a London-based company with expertise in high pressure equipment, to commercialize the technique," Snape said.

The technique is also being used to refine current radio carbon dating processes, which use the carbon 14 isotope to measure the age of an archaeological sample.

Comments of the article(total ) Print This Article E-mail
PHOTO GALLERY
PHOTO COUNTDOWN
MOST VIEWED
OLYMPIAN DATABASE
主站蜘蛛池模板: 国产精品麻豆一区二区 | 水密桃av | 日韩在线观看一区二区三区 | 玖玖精品 | 亚洲一区在线播放 | 成人欧美一区二区三区黑人孕妇 | 综合中文字幕 | 狠狠综合网 | 国产第一福利影院 | 国产精品永久在线 | 国产精品久久久久永久免费看 | 鲁大师在线高清在线播放免费观看 | 黄色片入口 | 这里只有精品视频 | 99精品视频在线免费观看 | 亚洲视频一区在线 | 婷婷午夜 | 成年人网站免费看 | 成人av三级 | 性视频软件 | 亚洲精品大片 | 日韩经典一区二区三区 | 久久久久女教师免费一区 | 黄网站色视频 | 久久久久免费看 | 欧美午夜精品一区二区三区 | 狠狠的色 | 毛片网站有哪些 | 亚洲视频在线免费看 | 少妇超碰 | 久久久久久黄色 | 六月激情婷婷 | 成人激情综合 | 精品在线一区二区三区 | 亚洲一区二区三区在线播放 | 久久99久久99精品免观看软件 | 亚洲综合国产 | 色婷婷久久综合 | 亚洲专区第一页 | 高清成人综合 | 欧美日皮|