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BEIJING, Feb. 11 (Xinhua) -- Chinese society will age fast in the next five years and the government must be well prepared for the demographic change, said Chinese Vice Premier Hui Liangyu here Friday.Government policies needed adjusting and the social insurance network should be improved, Hui said at a meeting of the China National Committee on Aging.Also services for senior citizens should be better developed to meet their needs, said Hui, also the committee's director.The country will also work to expand the pension system in the rural area and cover as many senior people as possible, he said.Health authorities plan to build more medical facilities for the elderly and urban planning should take the needs of senior people into consideration, he said.

SAN FRANCISCO, April 4 (Xinhua) -- Google Inc. on Monday announced that it is bidding for patent portfolio of Nortel Networks in the bankruptcy auction for the Canadian telecommunications equipment maker.In a press release, the Toronto-based Nortel said Google has agreed to buy all of its remaining patents and patent applications for 900 million U.S. dollars in cash.Nortel, which filed for bankruptcy protection in 2009, expects the auction to be held in June this year, pending Canadian and U.S. court approvals.Nortel has selected Google's bid as the "stalking-horse bid," or the starting point against which others will bid prior to the auction.The agreement with Google includes the planned sale of about 6, 000 Nortel patents and patent applications spanning wireless, wireless 4G, data networking, optical, voice, Internet, service provider and semiconductors.According to Nortel, the patent portfolio touches nearly every aspect of telecommunications and additional markets, including Internet search and social networking."This is an unprecedented opportunity to acquire one of the most extensive and compelling patent portfolios to ever come on the market," George Riedel, Nortel's chief strategy officer, said in a statement.Google argued that the bid would help protect it from patent litigation and foster innovation.The technology industry has recently seen an explosion in patent litigation, often involving low-quality software patents, which threatens to stifle innovation, Kent Walker, Google's general counsel, said in a blog post, believing the best defense against such litigation is to have a "formidable patent portfolio. ""So after a lot of thought, we've decided to bid for Nortel's patent portfolio in the company's bankruptcy auction," he said."If successful, we hope this portfolio will not only create a disincentive for others to sue Google, but also help us, our partners and the open source community -- which is integrally involved in projects like Android and Chrome -- continue to innovate," Walker noted.

LOS ANGELES, April 2 (Xinhua) -- People taking antidepressants may be more likely to develop thicker arteries which may raise the risk of heart disease and stroke, a new study suggests.Depression can heighten the risk for heart disease, but the effect of antidepressant use is separate and independent from depression itself, according to the study make public by the American Association for the Advancement of Science (AAAS) on Saturday.The data suggest that antidepressants may combine with depression for a negative effect on blood vessels, said study first author Amit Shah, MD, a cardiology fellow at Emory University School of Medicine.Study findings will be presented on April 5 at the American College of Cardiology meeting in New Orleans, according to the AAAS.The study included 513 middle-aged male twins who both served in the U.S. military during the Vietnam War. Twins are genetically the same but may be different when it comes to other risk factors such as diet, smoking and exercise, so studying them is a good way to distill out the effects of genetics.Researchers measured carotid intima-media thickness - the thickness of the lining of the main arteries in the neck -- by ultrasound. Among the 59 pairs of twins where only one brother took antidepressants, the one taking the drugs tended to have higher carotid intima-media thickness (IMT), even when standard heart disease risk factors were taken into account.The effect was seen both in twins with or without a previous heart attack or stroke. A higher level of depressive symptoms was associated with higher IMT only in those taking antidepressants."One of the strongest and best-studied factors that thickens someone's arteries is age, and that happens at around 10 microns per year," Shah said. "In our study, users of antidepressants see an average 40 micron increase in IMT, so their carotid arteries are in effect four years older."Antidepressants' effects on blood vessels may come from changes in serotonin, a chemical that helps some brain cells communicate but also functions outside the brain, Shah said."I think we have to keep an open mind about the effects of antidepressants on neurochemicals like serotonin in places outside the brain, such as the vasculature. The body often compensates over time for drugs' immediate effects," Shah said. " Antidepressants have a clinical benefit that has been established, so nobody taking these medications should stop based only on these results. This isn 't the kind of study where we can know cause and effect, let alone mechanism, and we need to see whether this holds up in other population groups."

WASHINGTON, April 19 (Xinhua) -- The U.S. National Aeronautics and Space Administration (NASA) on Tuesday set April 29 as the launch date for Endeavour's final voyage.The date was announced Tuesday at the conclusion of a flight readiness review at Kennedy Space Center. During the meeting, senior NASA and contractor managers assessed the risks associated with the mission and determined the shuttle and station's equipment, support systems and personnel are ready.Liftoff time is 3:47 p.m. EDT (1947 GMT). It will be the 134th shuttle mission overall, the 25th for Endeavour and the 36th shuttle mission to the International Space Station.Endeavour will deliver to the station a 2-billion-dollar, multinational particle detector known as the Alpha Magnetic Spectrometer.Space shuttle Endeavour sits on launch pad 39A with the crew aboard minutes before mission managers scrubbed the launch again at Cape Canaveral, Florida, July 13, 2009.The spectrometer, also designated AMS-02, is a particle physics experiment module that is to be mounted on the station. It is designed to search for various types of unusual matter by measuring cosmic rays. Its experiments will help researchers study the formation of the Universe and search for evidence of dark matter and antimatter.Endeavour's two-week mission was led by Commander Mark Kelly. Other crew include Pilot Greg Johnson, NASA Mission Specialists Michael Fincke, Andrew Feustel and Greg Chamitoff and European Space Agency Mission Specialist Roberto Vittori. Astronauts are planning to step out on four spacewalks to do maintenance work and install new components.NASA's 30-year-old shuttle program is ending this year due to high operating costs. The Obama administration wants to spur private companies to get into the space taxi business, freeing NASA to focus on deep space exploration and new technology development.Shuttle Atlantis is set for its final journey into space at the end of June. Its return to earth will mark the official end of the U.S. space shuttle program. After that, the Russian space program' s Soyuz capsule will be the only method for transporting astronauts to and from the station.

SAN FRANCISCO, March 7 (Xinhua) -- The world's leading hard rive producer Western Digital Corp. on Monday announced that it has agreed to buy Hitachi Ltd.'s hard disk drive unit for about 4. 3 billion U.S. dollars, a move that will create a dominant player in the industry.Western Digital said that it plans to acquire Hitachi Global Storage Technologies, a wholly-owned subsidiary of Hitachi Ltd., in cash and stock.The proposed combination will result in a customer-focused storage company with the industry's broadest product lineup backed by a rich technology portfolio, Western Digital said.According to their agreement, the resulting company will retain the Western Digital name and remain headquartered in Irvine in the U.S. state of California.The transaction has been approved by the board of directors of each company and is expected to close during the third quarter of 2011.With the purchase, Western Digital will claim 49.6 percent share of global hard disk drive unit shipments based on latest quarterly statistics, compared to 29.4 percent for Seagate Technology LLC, the industry's No. 2 supplier, research firm iSuppli pointed out.The deal will give Western Digital a lead of 20.2 percentage points over Seagate, up from a mere 2 points without the acquisition, iSuppli said in a research note released Monday.The acquisition will also allow Western Digital to enter the critical enterprise hard disk drive segment, where it currently is only a marginal player.Analysts believed that the purchase might be a consequence of declining hard disk drive shipments, which are being impacted by the rising sales of tablet computers, which don't use hard disk drives and are cutting into the sales of mobile PCs, a major market for hard drives."Amid weaker industry conditions, organic sales growth is more difficult to achieve, prompting hard disk drive suppliers to engage in acquisitions to gain market share," iSuppli noted.