准分子共振

Science and technology 科技 Molecular Biology: Folding Stuff 分子生物学:折叠 Shape determines a protein's function. Determining that shape, though, is tricky. 蛋白质的结构决定功能,而结构的形成却很难。 ABOUT 120,000 ty

发表于:2018-12-05 / 阅读(160) / 评论(0) 分类 经济学人科技系列

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(223) / 评论(0) 分类 数学英语

By Melinda Smith Washington 30 March 2007 Since the mid-20th century the World Health Organization reports there has been an increase in the rate of breast cancer among women in developed countries. For decades, doctors have urged their patients to d

发表于:2018-12-16 / 阅读(280) / 评论(0) 分类 2007年VOA标准英语(三月)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

发表于:2018-12-24 / 阅读(181) / 评论(0) 分类 Scientific American(四)月

Paris Paris intrigues 1 , astonishes, provokes, overwhelms 2 ... and gets under your skin. The City of Light is the apex 3 of architectural beauty, artistic expression, and culinary 4 delight, and it

发表于:2018-12-30 / 阅读(275) / 评论(0) 分类 英语沙龙2004全年合辑下

54 时差对大脑的影响 DATE=6-6-01 TITLE=SCIENCE REPORT- Jet Lag and the Brain BYLINE=Nancy Steinbach (Start at 59

发表于:2019-01-04 / 阅读(296) / 评论(0) 分类 科技之光

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. Olive oil producers generally guess the best time to harvest their olives by checking the fruits color. The olive has to hit that perfect spot where they

发表于:2019-01-08 / 阅读(179) / 评论(0) 分类 Scientific American(五)月

Searching the Internet can be a totally exhausting experience, as you bounce from one site to another to another, sometimes until you cant remember what you were looking for in the first place. But according to scientists at U.C.L.A., all that virtua

发表于:2019-01-08 / 阅读(227) / 评论(0) 分类 Scientific American(十)月

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

发表于:2019-01-08 / 阅读(214) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(318) / 评论(0) 分类 Scientific American(十)月

New Device Shows Human Body As Never Seen Before 新设备揭露人体不为人知的一面 Scientists are developing a medical device that could tell them more about the human body, and help them develop more-effective treatments for cancer, heart d

发表于:2019-01-12 / 阅读(278) / 评论(0) 分类 2016年VOA慢速英语(一)月

This years Nobel Prize in Chemistry is about the worlds smallest machines. G?ran Hansson, secretary general of the Royal Swedish Academy of Sciences, earlier this morning. The Royal Swedish Academy of Sciences has decided to award the 2016 Nobel Priz

发表于:2019-01-17 / 阅读(237) / 评论(0) 分类 2016年Scientific American(十)月

If all goes well, the inventors hope to develop the idea and make the sections entirely from recycled plastic. 如果一切顺利,那么投资者希望开发此想法并完全利用回收垃圾制造这些节段。 Paths, car parks and railway plat

发表于:2019-01-26 / 阅读(267) / 评论(0) 分类 经济学人科技系列

58 对赌博时大脑活动情况的研究 DATE=6-14-01 TITLE=SCIENCE REPORT ?Gambling and the Brain BYLINE=George Grow (Start at 0'11

发表于:2019-01-30 / 阅读(199) / 评论(0) 分类 科技之光

What's the world record for the most number of kisses ever given in one minute? 世界上一分钟吻的次数最多的纪录是多少次? a) 94 b) 904 c) 1004 Destined to be a writer Yvonne: Hi - I'm Yvonne Archer and this is 6 Minute English. And joining me today i

发表于:2019-02-02 / 阅读(262) / 评论(0) 分类 六分钟英语

A new study has shown that we tend to remember the bad times better than the good. The study, from Boston College psychologist, Elizabeth Kensinger and colleagues, has suggested that we retain and bear in mind events that carry negative emotional bur

发表于:2019-02-04 / 阅读(193) / 评论(0) 分类 阅读空间

Exposure to air pollution may hasten brain aging, a new study has found. 一项新研究发现,暴露在空气污染中可能会加速大脑衰老。 Researchers studied 1,403 women without dementia who were initially enrolled in a large health stu

发表于:2019-02-07 / 阅读(189) / 评论(0) 分类 阅读空间

Why smells from childhood mean so much Why does the hint of certain smells instantly transport you back to childhood? It may be because the first smell you associate with an object is given privileged status in the brain Yaara Yeshurun and colleagues

发表于:2019-02-11 / 阅读(264) / 评论(0) 分类 阅读空间

Joe Hollier, a 25-year-old former skater turned technology entrepreneur, describes the moment of transcendental calm when he gave up his smartphone. Mr Hollier had started going light, leaving behind his high tech pocket companion and disconnecting f

发表于:2019-02-18 / 阅读(166) / 评论(0) 分类 英语新闻

The European Union budget 欧盟预算 The gourmands of Brussels 布鲁塞尔的贪食者 The EU may be spending less, but the cost of running it is rising 欧盟也许会削减开支,但是运营成本在增加 THE European Union is on the verge o

发表于:2019-02-24 / 阅读(211) / 评论(0) 分类 经济学人商业系列
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