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【科普】Remedies: Researchers Devise New Weapon for Head
科学家发明新方法去除头虱
The scourge of elementary school, head lice, may have a formidable new enemy, even if it is just air. Researchers said yesterday that they had developed a blow-dryer-like device that appears to get rid of lice and their eggs in a single half-hour session.
终于有了强有力的办法来清除小学里让人头疼的虱子了，虽然它只是一种气体。科学家们昨天宣布他们发明了一种类似吹风机的装置能够在半小时内清除虱子和虱卵。
“We think that it works by drying them out,” said the lead author of the study, Dr. Dale H. Clayton, a biologist at the University of Utah. “The key is volume of air, not heat.” The report appears in the current issue of Pediatrics.
第一作者生物学家Dale H. Clayton 博士说：“我们认为它通过烘干虱子和虱子卵将它们清除掉，关键是气体的量而非温度。”这篇报道在本期儿科杂志上发表。
Anyone who has had to deal with lice can attest to how difficult they are to get rid of. According to the study, the problem results in tens of millions of lost school days.
有过虱子的人都知道要清除干净虱子有多难，根据上面的研究，有几千万的孩子为次耽误了上学。
Dr. Clayton and his colleagues hit upon the idea of using blown air as a treatment, as they were trying to find a way to keep lice alive in a dry climate. Dr. Clayton studies bird lice but had trouble keeping them alive when he moved to Utah because it is so arid. Later, when his two children got lice, he said, he got the idea of using air.
Clayton博士和他的同事是在试图在干燥的气候下保证虱子成活的时候偶然想到这个治疗办法的。Clayton博士研究鸟类身上的虱子，但在迁移到犹他州以后遇到了麻烦，因为犹他州太干燥了，虱子很难存活。因此后来他的两个孩子身上有虱子后就想到用这个办法清理。
The researchers tried six methods on 169 volunteers. All did well at killing the nits, but there were differences in how well they killed the lice. The best result came from a device now being commercially developed by the researchers for use at schools and clinics that combines a plastic hand piece with an air source. The device puts out heated air but at much larger volume than a blow dryer.
科学家们在169名志愿者身上试用了6种方法，结果6种方法清理虱子卵都很有效，但杀死虱子的效果不同，效果最好的就是现在商业化推广到学校和医院使用的装置，由一个手柄和气压瓶组成，这个装置能够喷出热气，比普通的吹风机的气体量大很多。
Apart from the apparent effectiveness of the device, it may offer another advantage over current methods. Lice cases are on the rise because the creatures have developed resistance to the chemicals used against them. They are not likely to do so with the dry-air method, the researchers said.
除了上面提到的作用，它与目前常用方法相比还有其它优势，科学家说因为虱子对化学药物越来越不敏感，数量逐渐增多，而对于干燥方法不会产生这种情况。 [标签:content1][标签:content2]
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作者:admin@医学,生命科学 2011-07-14 17:17
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