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，

经济学人:分子生物学 蛋白质的奥秘(2)

One of the leading researchers in the field of protein folding is David Baker of the University of Washington, in Seattle. 西雅图华盛顿大学的David Baker是蛋白质折叠领域研究者的领军人物之一。 For the past 20 years he and hi

VOA慢速英语2012--In US, an Epidemic of Prescription Drug Abuse

Health Report - In US, an Epidemic of Prescription Drug Abuse 健康报道 - 美国处方药滥用成灾 This is the VOA Special English Health Report. 这里是美国之音慢速英语健康报道。 Officials in the United States say deadly abuse o

2006年VOA标准英语-Uganda's AIDS Epidemic Abates, but Risk Remains

By Carolyn Weaver Uganda 31 May 2006 watch Uganda and AIDS report Experts say Ugandan women and children remain at special risk of HIV infection Uganda's program promoting abstinence, being faithful in marriage and condom use is often credited with

SSS 2009-01-23

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As Valentines day approaches, remember, its the thought that counts. Just ask a decorated cricket. Because according to a study published in the January

SSS 2009-04-28

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Many of the key molecules for life have a specific direction, or handedness: DNA twists to the right, amino acids to the left. Now scientists at the Nation

Designer Antibiotics

85 新功效的抗生素在加州诞生 DATE=8-15-01 TITLE=SCIENCE REPORT - Designer Antibiotics BYLINE=Jerilyn Watson （Start at 1'04

专业术语—基因专业词汇A/B

SSS 2008-10-17

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi

SSS 2009-09-17

The early Earths oceans were home to a lot of interesting chemistry. Now scientists have found that amino acids thought to be present way back when could have been cooked into other compounds vital for lifean idea you should take with a grain of salt

2006年VOA标准英语-Global AIDS Epidemic Continues to Grow

By Lisa Schlein Geneva 21 November 2006 UNAIDS Executive Director Peter Piot presents the annual AIDS epidemic update report in Geneva, Nov. 21, 2006 The global AIDS epidemic continues to grow leaving about 39.5 million people worldwide infected wit

VOA标准英语2012--Scientists Aim to End HIV Epidemic

Scientists Aim to End HIV Epidemic The HIV/AIDS epidemic is more than 30 years old. However, at the 19th International AIDS Conference Tuesday there was talk of ending the epidemic through scientific advances and public health policy. Dr. Anthony Fau

经济学人152:攻破屏障

Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c

经济学人107:克雅氏病 攻破屏障

Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis

英语博客：ESL Podcast 721 – A Widespread Epidemic

Alan: Did you see todays news? Theres been an outbreak of Podcasters Disease in the city. Katja: Oh, my God, not Podcasters Disease! I would not want to come down with that. Alan: The first outbreak was at the local high school, and the health author

学个词Learn a Word 第606期 Epidemic

今天我们要学的词是epidemic。 Epidemic, 是流行病的意思。星期一是世界艾滋病日。 World AIDS Day was established in 1988 to increase the awareness of the epidemic, 世界艾滋病日是1988年创立的，目的在于增加社会

万物简史 第409期:生命的起源(3)

There are actually twenty-two naturally occurring amino acids known on Earth, 实际上，地救上有22种天然存在的氨基酸， and more may await discovery, but only twenty of them are necessary to produce us and most other living things. 更多

万物简史 第407期:生命的起源(1)

19 The Rise Of Life 第十九章 生命的起源 In 1953, Stanley Miller, a graduate student at the University of Chicago, took two flasksone containing a little water to represent a primeval ocean, 1953年，芝加哥大学的研究生斯坦利米勒拿

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

每天吃鲑鱼 像戒烟一样有益

Eating a small steak every day could be as good for you as stopping smoking, scientists say. 科学家说，每天吃一小块牛排可以像戒烟一样对你有好处。 People who eat lots of protein-rich food were found to have lower blood pressu