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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 Academy of Sciences in the U.S. on Monday.Scientists used a technique called "x-ray crystallography" to reveal the molecular structure of proteins, which work as atom-sized "wires" discharging excess electricity."This is an exciting advance in our understanding of how some bacterial species move electrons from the inside to the outside of a cell," said lead author Tom Clarke of the University of East Anglia's School of Biological Sciences in Norwich, England.He said this discovery means "We can now start developing efficient 'bio-batteries' as the viable energy source in the future."Still, it could take perhaps a decade to go. Before that, existing uses of such bacteria needed to become 100 or 1,000 times more efficient, he said.The advance could also hasten the development of microbe technology that can help clean up oil or uranium pollution, he said.Microbes might in future be enlisted to clean up nuclear accidents such as Japan's Fukushima Daiichi disaster, he added.

LOS ANGELES, March 4 (Xinhua) -- The California Department of Public Health on Friday announced a recall of hazelnuts which might be contaminated by E. coli bacteria.The department said it ordered the recall after seven people fell sick with E. coli bacteria from eating tainted hazelnuts.The seven illnesses include one in Michigan, three in Minnesota and three in Wisconsin, said Dr. Howard Backer, interim director of the department.The hazelnuts were distributed by DeFranco & Sons, a Los Angeles company, said the department.After being notified of the contamination, the company is voluntarily recalling the nuts, the department said.The hazelnuts affected by the recall were sold under the brand names Sunripe, George Packing, Firestone Farms and Northwest Hazelnut and were distributed nationwide from Nov. 2 to Dec. 22, according to the department.The 50-pound bags of hazelnuts and mixed nuts with hazelnuts may have been repacked or sold from bulk containers, the department said, adding people who had bought the hazelnuts should not eat them.Consumers should check with retailers to determine if their nuts are subject to the recall, and if they are, should discard them, the department added.People who develop symptoms after consuming hazelnuts should seek immediate medical attention, the department suggested.E. coli may cause symptoms that include bloody diarrhea, stomach cramps and dehydration. In extreme cases, patients can suffer potentially life-threatening complication known as hemolytic uremic syndrome, which includes kidney failure.Young children and the elderly are the most vulnerable to the risk.

BEIJING, April 14 (Xinhuanet) -- Computer sales declined in the first three months of this year for the first time since 2009 worldwide.PC sales fell 1.1 percent in the first quarter to 84.3 million worldwide, according to tech research firm Gartner Wednesday, well short of its forecast for 3 percent growth.The dip was the first since the second quarter of 2009, when most of the world was still in the grip of economic turmoil."Although the first quarter is traditionally a slow one for PC sales, these shipment results indicate potential sluggishness, not just a normal seasonal slowdown," said Gartner, in a statement.Consumers select IT products at an IT fair named "Sham Shui Po computer festival" in Hong Kong, south China, Feb. 15, 2011. The eight-day IT fair kicked off here Monday. Some 600,000 people are predicted to visit the fair.Weak demand for consumer PCs was the biggest drag on the market, according to Gartner principal analyst Mikako Kitagawa."Low prices for consumer PCs, which had long stimulated growth, no longer attracted buyers," Kitagawa said."Instead, consumers turned their attention to media tablets and other consumer electronics."After Apple's second-generation iPad was released in February, many consumers either switched allegiances or simply held back from buying PCs, according to the analyst.Japan was a particularly weak spot, with PC sales falling 13 percent in the quarter, as people focused on getting back to normal after the March 11 earthquake and tsunami rather than spending money on new technology.

The severe water shortages have become a major bottleneck to our sustainable development. Nearly two-thirds of the cities in China lack water," said Chen Lei, Minister of Water Resources.From 2011 to 2015, China will strive to limit its annual water consumption within 620 billion cubic meters and cut water consumption per 10,000 yuan of GDP by 30 percent.

SAN FRANCISCO, March 22 (Xinhua) -- Apple Inc. on Tuesday announced that iPad 2, the second-generation of its popular tablet computer, will be available in China's Hong Kong, Korea, Singapore and additional countries and regions in April.The company also confirmed that iPad 2 will go on sale in 25 countries on March 25 in addition to the United States, where the device first hit market on March 11 and has seen strong demand."While competitors are still struggling to catch up with our first iPad, we've changed the game again with iPad 2," Steve Jobs, Apple's chief executive officer, said in a statement."We're experiencing amazing demand for iPad 2 in the U.S., and customers around the world have told us they can't wait to get their hands on it. We appreciate everyone's patience and we are working hard to build enough iPads for everyone," he noted.Apple had planned to released iPad 2 in Japan on March 25, but delayed the launch in the aftermath of the catastrophic March 11 earthquake and ensuing tsunami in the country.The 25 countries where iPad 2 will go on sale on March 25 include Australia, Austria, Belgium, Canada, the Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Mexico, the Netherlands, New Zealand, Norway, Poland, Portugal, Spain, Sweden, Switzerland and Britain.