标签：水和酒精分子 相关文章

经济学人:分子生物学 蛋白质的奥秘(1)

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(65) / 评论(0) 分类 经济学人科技系列

SSS 2011-04-20

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

发表于:2018-12-24 / 阅读(91) / 评论(0) 分类 Scientific American(四)月

经济学人:性感吸引:我的化学浪漫(1)

Science and Technology 科技 Sexual Attractiveness: My chemical romance 性感吸引：我的化学浪漫 Two putative human sex pheromones turn out not to be. 关于人类的两种性信息素的假说被证明是不成立的. For several decades b

发表于:2018-12-30 / 阅读(73) / 评论(0) 分类 经济学人科技系列

SSS 2012-03-07

This is Scientific American 60 second Science, I am Sophie Bushwick, got a minute~ Theyre called hydogels: Jell-O-like materials made of networks of long-chain molecules in water. And theyre as flexible as living tissue. But hydrogels could not recov

发表于:2019-01-08 / 阅读(116) / 评论(0) 分类 Scientific American(三)月

英语新词:这些cle/ule后缀单词 你理解对了么?

英语新词:这些cle/ule后缀单词 你理解对了么? 以cle或ule后缀的名词常表示 small (小的) 含义。 article n. 文章；物品；条款；[语] 冠词。 circle n. 循环，周期；圆；圈子；圆形物。 cubicle n. 小卧室；

发表于:2019-01-14 / 阅读(487) / 评论(0) 分类 英文语法词汇

TED演讲:为什么玻璃是透明的(1)

Take a look out your window, put on your glasses if you wear them. 向窗外张望一下，有必要的话，戴上眼镜。 You might want to grab a pair of binoculars, too, or a magnifying lens. 也许你还想拿副望远镜或是放大镜。 Now,

发表于:2019-01-17 / 阅读(67) / 评论(0) 分类 TED演讲教育篇

TED演讲:为什么油水不能混合(2)

As liquid water, these molecules are engaged in a constant and random square dance that is called the hydrogen bonding network. 作为液态水，这些分子从事着恒定而随机的被称为氢键网络的方块舞。 Entropy favors keeping the s

发表于:2019-01-17 / 阅读(58) / 评论(0) 分类 TED演讲教育篇

TED演讲:为什么油水不能混合(1)

Why does salt dissolve in water but oil doesn't? 为什么盐可溶于水而油却不行呢？ Well, in a word,chemistry. But that's not very satisfied, isn't it? 总的来说，是化学作用。但这并不令人满意，对吧？ Well, the reason

发表于:2019-01-17 / 阅读(67) / 评论(0) 分类 TED演讲教育篇

TED演讲:和老年痴呆症说再见(3)

How many people here are 40 years old or older? You're afraid to admit it now. 在座的有多少人已经四十多岁了？你不想承认了吗？ This initial step into the disease, this presence of amyloid plaques accumulating, can already be fou

发表于:2019-01-18 / 阅读(64) / 评论(0) 分类 TED演讲国际问题篇

经济学人39:社会科学 关于群体的思考

Science and Technolgy 科技 Social science 社会科学 Wisdom about crowds 关于群体的思考 To model the behaviour of humans en masse, treat them as people, not molecules 在为人类的全体活动建立模型时，要将他们看作是人，而

发表于:2019-01-26 / 阅读(89) / 评论(0) 分类 经济学人科技系列

经济学人59:疫苗能阻止药物滥用吗?

Science and Technology 科技 Combating addiction 打擊毒瘾 Can a vaccine stop drug abuse? 疫苗能阻止药物滥用吗？ It may be possible to vaccinate people against addictive drugs 人们也许能通过疫苗来阻止成瘾药物的使用 T

发表于:2019-01-26 / 阅读(104) / 评论(0) 分类 经济学人科技系列

车臣恐怖分子头目乌马罗夫被确认身亡

MOSCOW, April 8 (Xinhua) -- Russia's secret service confirmed Tuesday that Doku Umarov, listed as a terrorist by both Russia and the United States, had been killed in an anti-terror operation. In the first quarter of 2014, the activity of Umarov, the

发表于:2019-01-30 / 阅读(75) / 评论(0) 分类 英语新闻

经济学人192:疫苗能阻止药物滥用吗?

科学技术 Combating addiction 打击毒瘾 Can a vaccine stop drug abuse? 疫苗能阻止药物滥用吗？ It may be possible to vaccinate people against addictive drugs 人们也许能通过疫苗来阻止成瘾药物的使用 THE idea of vaccin

发表于:2019-02-05 / 阅读(122) / 评论(0) 分类 经济学人科技系列

土耳其总理指责抗议者为极端主义分子

ISTANBUL There have been more clashes in Turkey's capital, Ankara, between anti-government protesters and security forces, as civil unrest in the country continues. The prime minister condemned the protesters and called for calm. Protests are also co

发表于:2019-02-08 / 阅读(77) / 评论(0) 分类 英语新闻

AP 2010-03-04

[1] The worst may be over in the Northeast as a strong winter storm is tapering off. Already, more than 21 inches of snow has fallen in New York. Crews at airports from Philadelphia North are now trying to clear the runways. [2] The shows are going o

发表于:2019-02-11 / 阅读(138) / 评论(0) 分类 美联社新闻一分钟2010(三月)

TED演讲：宏观历史(6)

But of course, life is more than just exotic chemistry. 但是当然，生命不仅仅是奇异的化学物质。 How do you stabilize those huge molecules that seem to be viable? 那是怎么稳定那些大量的、似乎有存活的分子的呢？

发表于:2019-02-14 / 阅读(76) / 评论(0) 分类 TED演讲教育篇

万物简史 第408期:生命的起源(2)

Proteins are what you get when you string amino acids together, and we need a lot of them. 你把氨基酸串在一起，就得到了蛋白质。我们需要大量的蛋白质。 No one really knows, but there may be as many as a million types of pro

发表于:2019-02-17 / 阅读(61) / 评论(0) 分类 万物简史

万物简史 第362期:进入对流层(3)

The temperature six miles up can be -70 degrees Fahrenheit, and you would need, or at least very much appreciate, supplementary oxygen. 10公里高空的温度会降至零下57摄氏度，你需要补充氧气，至少很希望这么做。 After you

发表于:2019-02-25 / 阅读(66) / 评论(0) 分类 万物简史

万物简史 第355期:孤独的行星(20)

Nor does abundance necessarily relate to importance. 风度与重要程度也不一定有关系。 Carbon is only the fifteenth most common element, accounting for a very modest 0.048 percent of Earth's crust, but we would be lost without it. 碳只居

发表于:2019-02-25 / 阅读(69) / 评论(0) 分类 万物简史

TED演讲：细菌是怎样交流的(9)

Amd of course, you've just heard and you already know that we're running out of antibiotics. 当然，你一定听说过，而且你早就知道了，我们快要没有有效的抗生素了。 Bacteria are incredibly multi-drug-resistant right now, a

发表于:2019-03-04 / 阅读(95) / 评论(0) 分类 TED演讲教育篇
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