伊宁男科在线专家预约(伊宁怀孕70天不想要怎么处理) (今日更新中)

BEIJING Jan. 10 (Xinhuanet) -- Scientists have found a plant in Brazil using leaves to capture the tiny worms in the soil, according to Monday's Proceedings of the National Academy of Sciences in the U.S.The plant, named Philcoxia, was found in the tropical grassland of Brazil, where the biodiversity is well conserved.As the scientists searching for the answer of why the plant grows the leaves underground, they found the 1.5 millimeters-wide leaves can trap the worms and produce a digestive enzyme to help its roots to absorb the nutrition.Although it is not the first meat-eating plant to be discovered, the finding has still "broaden up our perception about plants," according to researcher Rafael Silva Oliveira, a plant ecologist at the State University of Campinas in Brazil.It suggests that carnivorous plants "may have evolved independently more times in plants than previously thought," he added

WASHINGTON, Dec. 12 (Xinhua) -- British scientists have discovered a new way to target cancer through manipulating a master switch responsible for cancer cell growth. The findings, published Monday in the U.S. journal Cancer Cell, reveal how cancer cells grow faster by producing their own blood vessels.Cancer cells gain the nutrients they need by producing proteins that make blood vessels grow, helping deliver oxygen and sugars to the tumor. These proteins are vascular growth factors like VEGF -- the target for the anti-cancer drug Avastin. Making these proteins requires the slotting together of different parts of genes, a process called splicing.Scientists at the University of West England and the University of Bristol discovered that mutations in one specific cancer gene can control how splicing is balanced, allowing a master switch in the cell to be turned on. This master switch of splicing makes cancer cells grow faster, and blood vessels to grow more quickly, as they alter how VEGFs are put together.In experimental models, the researchers found that by using new drugs that block this master switch they prevented blood vessel growth and stopped the growth of cancers."The research clearly demonstrates that it may be possible to block tumor growth by targeting and manipulating alternative splicing in patients, adding to the increasingly wide armory of potential anti-cancer therapies," the authors said.

BEIJING, Jan. 19 (Xinhua) -- China's major textile companies are expected to witness an annual increase of 8 percent in their value-added output over the next four years, the Ministry of Industry and Information Technology said Thursday.The ministry published a plan regarding supporting the development of the textile industry during the country's 12th Five-Year Plan period (2011-2015), according to which the sector's exports will reach 300 billion U.S. dollars by 2015 with an annual growth of 7.5 percent.The industry is also expected to employ 20 million people by 2015 and its energy consumption per unit of value-added output will drop by 20 percent from 2010, the guideline said.The country will encourage the textile industry to enhance brand-building and aims to build 5-10 textile companies of global influence and 50 companies with an annual revenue of more than 10 billion yuan by 2015.The guideline warned of potential risks for the sector, including volatile changes in raw material prices, rising production costs and a complicated international trade environment.The guideline said the industry should develop new products and explore new markets to ensure a healthy development during the coming period.

SHENYANG, Nov. 17 (Xinhua) -- A MD-90 aircraft left the northeastern city of Shenyang for its American home on Thursday, ending the service of the last McDonnell-Douglas jet for Chinese airlines.Chinese carriers will no longer operate MD-made jets due to growing market demands, said Lu Changchun, deputy general manager with the north China branch of China Southern Airlines, which has operated the MD-90 jet for over a decade.MD-90 jets were involved in no accidents during the decade-long-service in China, so safety concerns did not lead to their retirement, Lu said, adding about 1,000 MD-90 jets are still flying around the world.Lu, however, admitted that supply of aircraft materials was affected as the production line of MD jets shrank, after McDonnell-Douglas Cooperation was merged into Boeing in 1997.MD jets were replaced mainly because Chinese airlines need new models to accommodate air travel demands fueled by the economic boom, Lu said.The north China branch of China Southern Airlines also announced Thursday the retirement of five A300-600R planes, which are replaced by A320 family jets. China Southern Airlines began flying an Airbus A380 superjumbo in China in October.China's domestic air travel market is predicted to grow 13.9 percent annually by 2014 and transport 379 million domestic air passengers, which will make the country the world's second-largest air travel market after the United States, according to a report released by the International Air Transport Association.Back in the 1990s, a Shanghai-based aircraft maker assembled two MD-90 jets in China, Lu said, adding the two jets retired this year.Change of jets model serves the strategic transformation of China Southern Airlines and meets the market demands, Lu said.Li Jiaxiang, chief of China's civil aviation administration, estimated that over 1.5 trillion yuan (235 billion U.S. dollars) will be invested in the civil aviation industry by 2015, adding about 2,000 aircraft to the country's fleet.Commercial Aircraft Corporation of China, producer of China's first self-developed jumbo jet, the C919, has announced that it will complete the design for the passenger plane in 2012. The jet is expected to take off in 2014 and put into service in 2016.

BEIJING, Oct. 11 (Xinhuanet) -- Scientists have discovered that blind optimism is related to brain's frontal lobes which are associated with processing errors, according to a British study published Monday in the journal Nature Neuroscience.Scientists at the University College of London scanned brains of volunteers who were asked to estimate their personal likelihood of involving in negative events, like a divorce or cancer,  before and after given the average probability of these events occurring.They found that the volunteers who estimated lower probability (or the more optimistic ones) than the given one raised their estimates a little bit later while those estimated higher probability altered their estimates much more.Through the brain scanner, scientists saw there was less activity in the volunteers' frontal regions when the information given was worse than expected while more activity when the information was better than expected. It suggested that the more optimistic people neglected the negative predictions."The more optimistic we are, the less likely we are to be influenced by negative information about the future," said Dr. Tali Sharot, lead author of the study. He added being optimistic clearly had some benefits, "but it can also mean that we are less likely to take precautionary action, such as practising safe sex or saving for retirement. So why don't we learn from cautionary information?"

来源：资阳报