英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

SSS 2012-03-28

时间:2012-04-16 06:37来源:互联网 提供网友:gmeng   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

 This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute. 

 
Compounds found in the herb thyme have antibiotic1 properties. Now scientists have demonstrated that thyme might have a future role in fighting acne.
 
A number of factors cause acne, but the primary agents are bacteria called Propionibacterium acnes, or PA. Topical treatments containing benzoyl peroxide are commonly used to kill the bacteria. But they can irritate the skin.
 
To test other options, researchers steeped thyme, marigold and myrrh in alcohol to extract the plants active compounds. They tested the resulting tinctures on the PA bacteria. All three herbs killed more of the bacteria than an alcohol control. Thyme was the most effective of all. And thyme was also significantly more effective than the highest prescribed concentration of benzoyl peroxide. The research was presented at a conference of the Society for General Microbiology in Dublin.
 
The scientists say more research should be done to understand how the tinctures work on the molecular2 level, and to test them on actual skin environments.
 
Cooks already pass the thyme to add flavor to food. But acne sufferers could someday see thyme fly—into their medicine cabinets.
 
Thanks for the minute, for Scientific American, I am Cynthia Graber

点击收听单词发音收听单词发音  

1 antibiotic KNJzd     
adj.抗菌的;n.抗生素
参考例句:
  • The doctor said that I should take some antibiotic.医生说我应该服些用抗生素。
  • Antibiotic can be used against infection.抗菌素可以用来防止感染。
2 molecular mE9xh     
adj.分子的;克分子的
参考例句:
  • The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
  • For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时,分子的碰撞就停止了。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   sss  托福素材  sss  托福素材
顶一下
(1)
50%
踩一下
(1)
50%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴