成都哪家医院医精索静脉曲张好(成都怎么治脉管畸形比较好) (今日更新中)

WASHINGTON, Oct. 3 (Xinhua) -- Researchers at St. Michael's Hospital in Canada have discovered a new function for an enzyme that may protect against organ injury and death from anemia, according to a study appearing Monday in the U.S. journal of the Proceeding of the National Academy of Sciences.Researchers found that when people have anemia, neuronal nitric oxide synthase (nNOS) -- an enzyme in nerve cells that produces nitric oxide, an important signaling molecule in the body -- increases the body's ability to respond, adapt to low oxygen levels and makes the body more efficient in delivering oxygen to tissues. They also found that levels of nNOS in the brain increased in anemic mice, and that the mice without this enzyme die earlier, and with higher hemoglobin levels."Identifying this mechanism may lead to new therapies and approaches to improving outcomes for anemic patients," said Dr. Greg Hare, a researcher at the Li Ka Shing Knowledge Institute of the hospital and one of the lead investigators of the study.Anemia occurs when blood has a lower than normal number of red blood cells or hemoglobin -- an iron-rich protein that carries oxygen from the lungs and heart to the rest of the body. Cells need oxygen to survive and to produce energy for all bodily functions. The condition has many different causes including infection (malaria, HIV, parasites), nutritional deficiencies (iron, folate, B12), genetic mutations, pregnancy, trauma and surgical blood loss."This research will help us identify when an anemic patient is at greatest risk for injury and death when undergoing surgery," said Hare. "Research is underway to test these findings in humans."

TAIYUAN, Jan. 9 (Xinhua) -- China successfully launched the Ziyuan III satellite Monday from the Taiyuan Satellite Launch Center in northern Shanxi province.The satellite, a high-resolution remote-sensing satellite for civilian use, was launched at 11:17 a.m. aboard a Long March 4B rocket, according to a statement from the center.The satellite, weighing 2650 kg, entered an orbit of 500 km above the Earth about 12 minutes after it was launched. It has a designed life expectancy of five years.According to the center, the satellite is tasked with offering services to aid the country's land-resources surveys, natural-disaster prevention, agriculture development, water-resources management, and urban planning.The rocket also carried a satellite from Luxemburg, according to the launch center.The orbiter was developed and produced by the China Academy of Space Technology, a subsidiary of China Aerospace Science and Technology Corporation (CASC).The Long March 4B rocket is developed by Shanghai Academy of Spaceflight Technology, another CASC subsidiary. Monday's mission marked the 156th flight of China's Long March series of carrier rockets.

DUBAI, Oct. 9 (Xinhua) -- While many fairs in crisis-ridden Middle East struggle to attract sponsors and exhibitors, the Gulf Information and Technology Exhibition, or GITEX, which opened Sunday, has a different challenge: a lack of space due to the huge number of participants and professional visitors.The largest information and communication technology (ICT) trade fair in the Middle East occupied the entire 14 halls of the Dubai International Convention and Exhibition Centre in the heart of the sheikhdom. Some 3,500 exhibitors from 57 countries and regions display the latest cry of modern PC office and mobile technology, hard- and software and all kinds of related accessories. Over 130,000 visitors are expected to visit the ICT congress.Kazakhstan, Latvia, Malta, and Morocco participate for the first time. Besides, well-known giant brands such as Huawei, Intel, Microsoft or Blackberry, hundreds of small and medium enterprises participate this year."We are exhibiting for the second time here. It is worth coming, " said Dr. Andrej Vckovski, CEO of Swiss enterprise software producer netcetera from Zurich. "We already won a contract from the Health Authority in Abu Dhabi and we plan to expand to Qatar."The annual ICT spending in the Gulf Arab region alone is expected to grow by 15 percent and to reach 180 billion U.S. dollars in 2014.While e-users still have to wait for Windows 8 from Microsoft, Huawei Technologies demonstrates its latest Cloud Computing solutions. Cloud Computing describes the process where many firms share the same server simply through software, instead of running expensive independent servers at their premises.The fair has also a lot of firsts on its agenda. Nokia launches the N9 mobile phone in the region for the first time. Research in Motion or RIM from Canada shows its new Bold 9900 Blackberry smart phone. Panasonic showcases its planned solar-energy run community for 3,000 citizens in Fujisawa near Tokyo."We plan to finish construction and launch this full-fledged Green Community in 2018, when Panasonic will celebrate its 100 years anniversary," said Muneo Yamamoto, Technical Manager Systems Solutions at Panasonic.Symantec launches Endpoint Protection 12, Cloud Security software. "Security is currently the top priority for organizations across the Middle East," explained Bulent Teksoz, Chief Security Strategist for Emerging Markets at Symantec.According to the NASDAQ-listed software provider, 76 percent of United Arab Emirates residents have fallen victim to Cyber Crime in 2010, and Saudi Arabia remains the most spammed country in the world, with a spam rate of 84 percent, albeit global spam is decreasing.A parallel Gitex conference hosts leading experts from the ICT industry for presentations and discussions around the latest trends and challenges. For retail consumers, the Gitex Shopper Fair at the Dubai Airport Expo offers everything from laser printers to iPads, from Smart Phones to CD. Due to the discount sellers offer at the Gitex Shopper, the consumer fair is a popular hub for bargain hunters.

SAN FRANCISCO, Dec. 8 (Xinhua) -- Twitter on Thursday started to roll out a major redesign of its interface in hopes of simplifying users' experience, as well as new brand pages to strengthen its relationship with advertisers.During a press conference at its new headquarters in San Francisco, Twitter Chief Executive Officer Dick Costolo and co- founder Jack Dorsey unveiled a whole new look of the social networking and microblogging service.According to an introduction video, the new homepage features profile on the left and the timeline on the right, which are flipped from the current positions and take less space than they used to.Three new buttons were also introduced as "Home," "Connect" and "Discover." "Connect" shows users who has mentioned them and suggests some accounts they might want to follow. "When you use Discover, you'll see results reflecting your interests -- based on your current location, what you follow and what's happening in the world," said Twitter.The overhauled interface is only available to a small group of users at first and will be rolled out to all users over the coming months. It will also remain consistent across Twitter's official mobile apps. Twitter has launched a page fly.twitter.com to explain all the changes.Along with the introduction of the redesign, Twitter also announced new brand pages on its platform. A total of 21 brand partners will be included in the initial launch, such as American Express, Best Buy, Bing, Coca-Cola, HP, Disney and Nike.Analysts said Twitter has ambitions to compete with similar brand pages from Facebook and Google+. According to eMarketer, Twitter's global advertising revenue is expected to reach 139.5 million U.S. dollars this year and approach 400 million dollars in 2013.

WASHINGTON, Dec. 2 (Xinhua) -- The U.S. Justice Department Friday approved Google's 400 million dollar acquisition of Admeld, a company that provides an online advertising platform for publishers.The Justice Department concluded that it was "not likely to substantially lessen competition in the sale of display advertising."Google operates the largest Internet search engine in the world and one of the largest display advertising platforms. It had revenues of about 29 billion dollars in 2010, most of which came from ads revenue.Admeld, with annual revenue of 30 million dollars, offers technology services to Internet publishers that help them boost revenue by optimizing ads display from hundreds of sources.Google is expected to grab 9.3 percent of online display advertising spending in the U.S. this year, up from 8.6 percent last year, making it the No. 3 provider, according to the digital intelligence company Emarketer.The No. 1 position will be taken by Facebook with its share increased to 16 percent up from 12 percent a year ago, while Yahoo! will slip slightly to 13 percent, said Emarketer.

来源：资阳报