单词:electronphoresis
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In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo
This is the VOA Special English Agriculture Report. A locavore is someone who eats foods produced locally. Locavores usually define local as within one hundred sixty kilometers. This new term grew out of a reaction to the long distances that food no
Politics Overtaking Science in Global Warming Debate Polls in recent years show that fewer Americans believe global warming is a threat or that it is driven by human activities. Thats despite consensus among scientists that climate change is not only
Identity Thieves’ New Ploy: Pharming 2 How do people pharm? Pharming scams take a few different forms: Attackers could use malicious code, such as a virus, planted on a user’s PC to track keystrok
This is Scientific American's 60-Second Science. I'm Sophie Bushwick. Got a minute? The shortest distance between two points may be a straight line, but try telling that to electrons: when current flows down a wire, these particles zig and zag, movin
On a cold, dull, Winter day, I sometimes light a fire after picking the children up from school. We gather around and feel cozy. The lounge where we have the fireplace also has a computer and a Wii console, so there is plenty to do for everyone. Thou
Three Scientists Win Nobel Prize in Chemistry Three scientists have won the Nobel Prize for chemistry for their work to simplify and improve the imaging of biomolecules. 三位科学家因为在简化和改善生物分子成像方面的成就获得了诺
By Mike O'Sullivan Los Angeles 19 September 2006 The Getty Center is one of the leading art institutions in the United States. It is also major center for restoration of damaged art works. The Getty museum has been embroiled in recent controversies
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MARY LOUISE KELLY, HOST: I let you down. I should have acted faster and more decisively - the words of NPR CEO Jarl in an email to our newsroom. He met with NPR staff this afternoon two days after he asked for the resignation of senior vice president
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But this still doesn't explain why light is able to pass through glass rather than being absorbed as with most solids. 但是这还是不能解释为什么光可以穿透玻璃而不是像其他大多固体那样被吸收。 For that, we need to go a
The forestry industry in New Zealand is in trouble. Forestry has always been one of our major export industries but in recent years, it has been declining. Nineteen sawmills closed this year, two in the last month. New plantings of trees reached the
By Lisa Schlein Geneva 12 May 2007 The World Food Program (WFP) says it will be able to restore food rations it was forced to cut for more than a million displaced people in northern Uganda. As Lisa Schlein reports for VOA from Geneva, the WFP says i
Ganso could be out until 2013, says physio RIO DE JANEIRO, Sept. 28 (Xinhua) -- Brazil midfielder Paulo Henrique Ganso could be forced to wait until next year to make his debut for new club Sao Paulo. Ganso, who joined the Brazilian top division outf
Neutrons and protons occupy the atom's nucleus. The nucleus of an atom is tinyonly one millionth of a billionth of the full volume of the atombut fantastically dense, since it contains virtually all the atom's mass. As Cropper has put it, if an atom
The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen