中山肛瘘科最好的医院(中山便血 鲜红 疼痛) (今日更新中)

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, May 1 (Xinhua) -- Middle-aged adults who sleep too less or too much may be more likely to suffer cognitive decline, a new study suggests.According to the study, less than six hours of sleep each night is considered too little and more than eight hours as too much for middle-aged adults.The study, conducted by researchers at University College London Medical School, was published May 1 in the American medical journal Sleep.The researchers conducted the study in two periods -- the 1997- 1999 period and the 2003-2004 period. The participants were asked how many hours they slept on an average week night, and were asked the same question in 2003-2004 after an average 5.4 years of follow-up.The researchers compared those who reported changes in their sleep patterns with people whose sleep duration stayed the same over the course of the study.In the follow-up, each individual was given a battery of standard tests to assess his or her memory, reasoning, vocabulary, global cognitive status and verbal fluency.The study findings show that women who slept seven hours per night had the highest score for every cognitive measure, followed by those who had six hours of sleep. For men, cognitive function was similar for those who reported sleeping six, seven or eight hours.However, less than six hours of sleep -- or more than eight hours -- were associated with lower scores."Sleep provides the body with its daily need for physiological restitution and recovery," explained Jane Ferrie, a senior research fellow in the department of epidemiology and public health at the school. "While seven hours a night appears to be optimal for the majority of human beings, many people can function perfectly well on regular sleep of less or more hours."However, since most research has focused on the effects of sleep deprivation on biological systems, it is not yet fully understood why seven hours is optimal -- or why long sleeping appears to be detrimental, Ferrie said."Chronic short sleep produces hormones and chemicals in the body which increase the risk of developing heart disease and strokes, and other conditions like high blood pressure and cholesterol, diabetes and obesity," she added.

BEIJING, Feb. 20 (Xinhua) -- China's railways handled 7.13 million passengers Saturday, setting a new one day record, the Ministry of Railways (MOR) said Sunday.The figure was 16 percent higher year on year, the MOR said.Chinese railways are witnessing a new wave of travel after the Lantern Festival celebration (the 15th day of the first month in the Lunar New Year) Thursday, which is considered a symbolic ending of the festival season.China's Spring Festival fell on Feb. 3 this year.The busy Spring Festival transportation season runs for 40 days and is calculated in two phases: 15 days before the Spring Festival and 25 days after the Spring Festival.

WASHINGTON, April 6 (Xinhua) -- U.S. researchers have discovered two genes in which variation affects intake of caffeine, the most widely consumed stimulant in the world, according to a report described Wednesday in the open-access journal PLoS Genetics.A team of investigators from the National Cancer Institute, Harvard School of Public Health, Brigham and Women's Hospital, and the University of North Carolina at Chapel Hill examined genetic variation across the entire genome of more than 47,000 individuals from the U.S.They found the genes -- CYP1A2, which has previously been implicated in the metabolism of caffeine, and AHR, involved in the regulation of CYP1A2, played roles in regulating intake of caffeine. Individuals with the highest-consumption genotype for either gene consumed 40 mg more caffeine than those with the lowest-consumption genotype, equivalent to the amount of one-third cup of caffeinated coffee, or one can of cola.Caffeine is implicated in numerous physiological and medical conditions; it affects sleep patterns, energy levels, mood, and mental and physical performance. The identification of genes that have an impact on daily consumption offers opportunities to better understand these conditions. Further exploration of the identified genetic variants may provide insight into the speed of caffeine metabolism, how long caffeine circulates in the blood, or how strong the physiological effects of consuming a given amount of caffeine are.

WASHINGTON, March 30 (Xinhua) -- A trace amount of radioactive iodine has been found in a sample of milk from the west state of Washington, the U.S. Environmental Protection Agency and the Food and Drug Administration (FDA) said Wednesday.According to a joint statement from the two agencies, results from a screening sample taken March 25 from Washington detected 0.8 pCi/L of iodine-131, which is more than 5,000 times lower than the Derived Intervention Level set by the FDA.These types of findings are to be expected in the coming days and are far below levels of public health concern, including for infants and children, the statement said.Iodine-131 has a very short half-life of approximately eight days, and the level detected in milk and milk products is therefore expected to drop relatively quickly."Radiation is all around us in our daily lives, and these findings are a minuscule amount compared to what people experience every day. For example, a person would be exposed to low levels of radiation on a round trip cross country flight, watching television, and even from construction materials," said Patricia Hansen, an FDA senior scientist.

来源：资阳报