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【bio-news】1月12日-16日的PNAS新闻摘要
1月12日-16日的PNAS新闻摘要
ARTICLE HIGHLIGHTS
论文要点
Importance of biology in financial trading
Remote control microgrippers
Nano-MRI
Epstein-Barr virus may contribute to cancer
Stem cell treatment for hemophilia
金融交易的生物学重要性
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纳米MRI
爱泼斯坦—巴尔病毒可能对癌症有贡献
血友病的干细胞疗法
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Importance of biology in financial trading
A longer ring finger relative to the index finger is an indicator that a high-frequency financial trader is more likely to be successful, a new study finds. Previous research has found that the length ratio of index finger to ring finger (termed 2D:4D) is a measure of prenatal exposure to androgens (male sex hormones), which can affect the developing brain, imparting increased confidence and quickened reaction times. John Coates and colleagues suggest that exposure to prenatal androgens can improve the concentration and reflexes necessary to follow prices and make trades on extremely short notice, making traders more effective. The researchers measured the fingers on the right hands of 44 male traders in London who were engaged in a type of trading that involved rapid decision-making and quick physical reactions. The authors then correlated finger length ratio to the traders' profits and losses over the preceding 20 months. A lower 2D:4D ratio predicted higher long-term profitability as well as a greater number of years that a trader remained in the business, according to the report. The success and persistence of traders exposed to high levels of prenatal androgens suggests that financial markets may be influenced by traders' biological traits, the authors say.
Article #08-10907: "Second to fourth digit ratio predicts success among high-frequency financial traders," by John M. Coates, Mark Gurnell, and Aldo Rustichini
MEDIA CONTACT: John Coates, Judge Business School and Department of Physiology, Development, and Neuroscience, University of Cambridge, Cambridge, UNITED KINGDOM; tel: +44-207-243-5573; e-mail: jmc98@cam.ac.uk
金融交易的生物学重要性
一项新的研究发现，无名指相对食指更长是一个指标，指示着一个高频率的金融交易员更可能成功。此前的研究发现食指对无名指的长度比（术语是2D：4D）是出生前接触雄性激素（男性性激素）的衡量标准，它可以影响大脑的发育，提供更多的自信和更迅速的反应时间。John Coates及其同事提出，出生前接触雄性激素可以促进跟踪价格并在极短时间内做出交易所必须的注意力和反射，这让交易员的效率更高。这组科学家测量了伦敦的44名男性交易员右手的手指，这些交易员从事一项涉及到快速决策和迅速身体反应的交易。这组作者然后把手指长度比例和交易员此前20个月的收益和损失联系了起来。根据该报告，2D：4D比例低预示着长期收益率高以及交易员能在此行业中从业更长时间。这组作者说，出生前接触到高浓度的雄性激素的交易员的成功和持久性提示，金融市场可能受到交易员的生物特征的影响。
论文 #08-10907: "Second to fourth digit ratio predicts success among high-frequency financial traders," 作者 John M. Coates, Mark Gurnell和Aldo Rustichini
媒体联系人：John Coates，英国剑桥大学Judge商学院以及生理学、发育和神经生物学系
Judge Business School and Department of Physiology, Development, and Neuroscience, University of Cambridge, Cambridge, UNITED KINGDOM
电话： +44-207-243-5573
电子邮件：jmc98@cam.ac.uk
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Remote control microgrippers
Researchers have developed tiny metallic grippers that can be remotely triggered to clench by biochemicals or a rise in temperature. The "microgrippers," which resemble sub-millimeter-sized crabs, could be useful in a number of medical applications, including the removal of cells from embedded tissue in a process known as an in vitro biopsy. Conventional microgrippers are controlled by wire or pneumatics through thin tubes; the physical connections in such devices can limit their maneuverability. David Gracias and colleagues have developed microgrippers that are free of such constraints. Their microgrippers' likeness with arthropods is no accident--the researchers' design was inspired by the joints of crabs. The gripping action arises from a prestressed metal layer which is held open by segments of organic polymer, one at each metallic-polymer joint. There are several ways to soften the polymer and release the tension: increasing the temperature above 40 degrees Celsius, introducing the microgripper into a caustic solution, or exposing it to biological reagents. At present the gripping action is irreversible under biological conditions, and may be triggered by too many factors to be a reliable surgical tool. But the researchers demonstrate that the microgripper can be manipulated by magnets and are strong enough to excise tissue in an in vitro model of a bladder biopsy.
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作者:admin@医学,生命科学 2011-03-15 05:12
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