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Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37C;a departure of a few

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Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only withi

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By Jane M Friedman Washington, DC 11 April 2006 watch DNA Skin Cream report In the United States, where skin cancer is common, a team at the University of Alabama Birmingham is trying out a cream that

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This is Scientific Americans 60 seconds science, I am , got a mimute? probiotics are so hot, bacterial that we can consume in food like yoghurt, miso and pickles can help us got my grow bands, they are happy and healthy.Now there might be another rol

美国科学60秒 SSS 2012-11-30

You might say blue-green algae are optimists: they put things in the best possible lightliterally. Actually, the organisms arent really algae. Theyre photosynthetic ocean bacteria. And they can fine-tune their photosynthetic apparatus to take advanta

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Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37C; a departure of a few

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Traditional Sushi Eaters Have Specialized Gut Bacteria If you want to shell a walnut, it helps to have a nutcracker. And if you want to digest seaweed, it helps to have the right enzymes. Now, a study in the journal Nature shows that Japanese peopleb

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Enamel prisms - rod-like bundles of hydroxyapatie crystals which are orientated at right angles to the tooth surface. Each prism can be traced from the outside of the enamel all the way to the dentine

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Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

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Code - the code of nucleotides is written in

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EDUCATION REPORT - Intel Science Talent Search Winners By Nancy Steinbach Broadcast: Thursday, April 01, 2004 This is Steve Ember with the VOA Special English Education Report. A seventeen-year-old bo

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Smitha Raghunathan | Washington, DC 25 June 2010 Harvard researchers found that white rice consumption increases the risk of Type 2 diabetes while brown rice consumption actually reduces the risk. Reducing your risk of diabetes may be as simple as ha

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This is the VOA Special English Health Report. Three scientists based in the United States have won the two thousand nine Nobel Prize for Physiology or Medicine. They are being honored for their work in the nineteen eighties about the health of cell

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Aspirin has been shown to reduce the risk of heart attacks, strokes and some cancers. But stomach bleeding is still a risk from the drug. Transcript of radio broadcast: 21 July 2008 VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm

VOA标准英语2012--Nano Tool Watches Teardrop Protein Destroy Bacteria

Nano Tool Watches Teardrop Protein Destroy Bacteria About a hundred years ago, a Scottish biologist discovered that proteins called lysozymes in human tears can kill bacteria. Scientists have studied the enzyme extensively, but molecular biologist Gr

VOA标准英语2011--Researchers Identify New Target in Cance

Researchers Identify New Target in Cancer Fight Scientists have identified a new way of fighting cancer that limits the growth and spread of a variety of tumors in laboratory animals. When you get a cut, the area quickly becomes inflamed - swollen, r

VOA标准英语2011--Natural Substance Reverses Diabetes in M

Natural Substance Reverses Diabetes in Mice Researchers used a substance, made naturally in the body, to reverse diabetes in mice, a finding which could be key to rolling back Type 2 diabetes. The enzyme, called NMN (nicotinamide mononucleotide), res

美国科学60秒 SSS 2015-04-09

Telomeres are parts of chromosomes that protect the ends of the chromosomes. Theyre often likened to the aglets(绳两端的金属箍) at the end of shoelaces(鞋带). And like aglets eventually crack, telomeres tended to get shorter over time, with

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Don and Ya?l quickly run through what happens in your body when you're frightened. D: The anatomy of fear, on this Moment of Science. Y: One nice day you're walking along a wooded path. You come around a corner and there, coiled in the path, is a hug

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The vampire is the stuff of the great horror stories. However, a recent textbook by geneticist John Jenkins suggests that Bram Stokers legend of the vampire, Dracula, may have had its basis in a very real disease that prevents some people from gettin