经济学人:分子生物学 蛋白质的奥秘(3)

One common protein-contact prediction is that, if the side chain of one member of a pair of amino acids brought close together by folding is long, 一种比较普通的蛋白质接触预测就是，如果一对氨基酸的一个侧链折叠后很长，

TED演讲:如何把熟蛋变生(2)

Here's the key part. 接下来是关键的部分。 The solution nearest the wall spins faster than the solution closer to the middle. 离试管壁最近的溶液，要比中间的溶液旋转得更快。 That difference in velocity creates sheer str

SSS 2011-01-27

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Generations of American children have been told, Eat your broccoli! And for decades, researchers have known that broccoli and related vegetables like cauliflower and water

SSS 2008-09-04

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Conditions such as mad cow disease are caused by abnormally shaped proteins, called prions. Prions spread by causing other, normal proteins to misfold

Do Animals Think?

As a matter of fact, milk always meets in the stomach a digestive juice which curdles it; the curdling of the milk is the first step in its digestion. A similar wrong idea is that fish and ice cream w

SSS 2008-10-08

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? The Nobel Prize in chemistry goes to three men who revolutionized molecular life science, Japans Osamu Shimomura and Americans Martin Chalfie and Roger Tsien. They dev

SSS 2008-05-05

This is Scientific American's 60-Second Science, Im Steve Mirsky. Got a minute? Biologists often attempt to construct a genealogy that shows the relationships of all life on earth. One well-accepted effort compares the nucleic acid sequences that cod

SSS 2009-10-07

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.

英语歌曲:Split Personality

Split Personality 演唱者：pink hmm, ooh i do not trust so i can not love (uh cant no man be trusted) oh no, no, no and i will not dare to open up (this is dusted pink) well my rents passed due and now my car wont stop i hate the bus (arent you gl

TED演讲:如何把熟蛋变生(1)

It's so obvious that it's practically proverbial. You can't unboil an egg. 很明显又众所周知的是。你不能把一个熟蛋变生。 Well, it turns out you can, sort of. 然而，其实在某种程度上你是可以的。 What thermal energy

Mad Cow Disease

74 疯牛病及其最新的检验方法 DATE=7-24-01 TITLE=SCIENCE IN THE NEWS #2134 - Mad Cow Disease BYLINE=Nancy Steinbach, George Grow VOICE ONE: This is Sarah Long. VOICE TWO: And this is Steve E

Lesson 159 - LICK / LICKETY-SPLIT

Lick Lickety split 今天我们要给大家介绍的两个习惯用语都是以 lick 这个字为主的。Lick 就是用舌头舔什么东西。比如说,你要是买了一个蛋卷冰淇淋,那你就非

单词超市第144期 split up

今天要学的一个词组: split up. Split up是分手的意思。最近呢，Kate Hudson and Chris Robinson are splitting up after nearly six years of marriage, said her publicist. Kate Hudson和丈夫结婚将近六年决定分手。哎，又一对

Using bacteria to generate energy hopeful

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Ac

Human fertilization process discovered

BEIJING, Aug. 22 (Xinhuanet) -- Researchers have discovered how a human egg captures an incoming sperm for fertilization, paving the way to help couples suffering from infertility, according to media reports on Monday. An international team of resear

美国习惯用语:441 split hairs; bad hair day...

上次我们学了几个由hair发展而来的习惯用语： win by a hair, lose by a hair, hair-raising。今天我们再要讲两个。第一个是：split hairs。 Slit意思是剖分。头发原本就相当纤细，再去剖分，那就不知有多

George Michael admits Kenny split

BEIJING, Aug. 23 (Xinhuanet) -- British singer George Michael has admitted his split from long time partner Kenny Goss at his concert at the Prague State Opera House Monday. Kenny and I haven't been together for two and a half years, the 48-year-old

健康生活 从食物搭配开始

There has been a lot of research done on the significance of food combining when we eat. Many believe that our stomach is designed to only digest food correctly one food type at a time or eating foods together that are compatible with each other. Thi

经济学人:熊猫遗传学:熊猫的第二拇指(2)

He and his colleagues noted parallel changes in the genes for three digestive enzymes whose job is to liberate two particular amino acids, lysine and arginine, from proteins. 他的团队发现三种消化酶基因相似的改变，这些消化酶的作

学个词Learn a Word 第1543-split

今天我们要学的词是 split. Split is spelled s-p-l-i-t, split. Split 做为形容词，有劈开的，裂开的意思。比如，Lawmakers are split along party lines on the proposal. 对于这项提案，立法人员的态度按党派分成两个