中山大便出血血多鲜红不痛中山哪个医院治疗混合痔较好,中山切痔疮疼不疼,中山便血排便时肛门疼痛,中山大便出血鲜红不痛,中山肛肠那家医院最好,中山华都医院医生好吗,中山大便带血粘稠物

WASHINGTON, Oct. 3 (Xinhua) -- The Rockefeller University confirmed Monday its Canadian-born cell biologist Ralph Steinman died three days before being awarded the Nobel Prize on Monday as the Nobel committee was unaware of his death at the time."Steinman passed away on September 30," the New York university said in a statement."He was diagnosed with pancreatic cancer four years ago, and his life was extended using a dendritic-cell based immunotherapy of his own design."The Nobel committee was unaware of Steinman's death when announcing this year's winners and it was unclear whether the prize would be rescinded because Nobel statutes don't allow posthumous award."The Rockefeller University is delighted that the Nobel Foundation has recognized Ralph Steinman for his seminal discoveries concerning the body's immune responses," says Rockefeller University President Marc Tessier-Lavigne."But the news is bittersweet, as we also learned this morning from Ralph's family that he passed a few days ago after a long battle with cancer. Our thoughts are with Ralph's wife, children and family.""We are all so touched that our father's many years of hard work are being recognized with a Nobel Prize," says Steinman's daughter Alexis. "He devoted his life to his work and his family, and he would be truly honored.""Ralph's research has laid the foundation for numerous discoveries in the critically important field of immunology, and it has led to innovative new approaches in how we treat cancer, infectious diseases and disorders of the immune system," Tessier-Lavigne says.Steinman, who discovered the immune system's sentinel dendritic cells, is this year's recipient of the Nobel Prize in Physiology or Medicine. He shares half the prize with Bruce Beutler and Jules Hoffmann.

BEIJING, Jan. 9 (Xinhua) -- The United States Treasury Secretary Timothy Geithner will discuss economic ties and exchange views with Chinese officials on the global economic situation during his trip to China, Foreign Ministry spokesman Liu Weimin said on Monday.Liu said at a regular press briefing that Geithner will visit China from Jan. 10 to 11 as the U.S. President's special representative. Premier Wen Jiabao, Vice President Xi Jinping, Vice Premier Li Keqiang and Vice Premier Wang Qishan will meet with him during the visit.Liu said China and the U.S. have agreed to build a partnership of cooperation based on mutual respect and mutual benefit."The global economic and financial situation is facing severe challenges. Further strengthening China-U.S. economic and trade cooperation will be helpful in meeting these challenges," Liu said."China has proposed further promoting the two countries' economic and trade cooperation and hopes the U.S. will work with China toward this end," Liu said.

WASHINGTON, Dec. 20 (Xinhua) -- NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system, the U.S. space agency announce Tuesday.The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in the so-called habitable zone where liquid water could exist on a planet's surface, but they are the smallest exoplanets ever confirmed around a star like our sun, according to NASA.The discovery marks the next important milestone in the ultimate search for planets like Earth. The new planets are thought to be rocky. Kepler-20e is slightly smaller than Venus, measuring 0.87 times the radius of Earth. Kepler-20f is slightly larger than Earth, measuring 1.03 times its radius. Both planets reside in a five-planet system called Kepler-20, approximately 1, 000 light-years away in the constellation Lyra.Kepler-20e orbits its parent star every 6.1 days and Kepler-20f every 19.6 days. These short orbital periods mean very hot, inhospitable worlds. Kepler-20f, at 800 degrees Fahrenheit, is similar to an average day on the planet Mercury. The surface temperature of Kepler-20e, at more than 1,400 degrees Fahrenheit, would melt glass."The primary goal of the Kepler mission is to find Earth-sized planets in the habitable zone," said Francois Fressin of the Harvard-Smithsonian Center for Astrophysics, lead author of a new study published in the journal Nature. "This discovery demonstrates for the first time that Earth-size planets exist around other stars, and that we are able to detect them."The Kepler-20 system includes three other planets that are larger than Earth but smaller than Neptune. Kepler-20b, the closest planet, Kepler-20c, the third planet, and Kepler-20d, the fifth planet, orbit their star every 3.7, 10.9 and 77.6 days. All five planets have orbits lying roughly within Mercury's orbit in our solar system. The host star belongs to the same G-type class as our sun, although it is slightly smaller and cooler.

WASHINGTON, Oct. 18 (Xinhua) -- Scientists have increased the estimate of the number of humpback whales in the North Pacific Ocean, according to a paper published Tuesday in the Marine Mammal Science journal.The increase follows a refined statistical analysis of data compiled in 2008 from the largest whale survey ever carried out to appraise humpback whale populations throughout the North Pacific.The number of North Pacific humpback whales in the 2008 study, known as the Structure of Populations, Levels of Abundance and Status of Humpbacks, or SPLASH, was estimated at just under 20,000 based on a preliminary look at the data.The latest research indicates the population to be over 21,000 and possibly even higher -- a significant improvement to the scant 1,400 humpback whales estimated in the North Pacific Ocean at the end of commercial whaling in 1966."These improved numbers are encouraging, especially after we have reduced most of the biases inherent in any statistical model," said Jay Barlow, marine mammal biologist of the U.S. National Oceanic and Atmospheric Administration (NOAA)."We feel the numbers may even be larger since there have been across-the-board increases in known population areas and unknown areas have probably seen the same increases," Barlow added.The SPLASH research was a three-year project started in 2004 involving NOAA scientists and hundreds of other researchers from the United States, Japan, Russia and some other countries.It was the first systematic survey ever attempted to determine the humpback whales' overall population, structure and genetic makeup in the North Pacific.

BEIJING, Jan. 17 (Xinhuanet) -- India has reported the first case of "totally drug-resistant tuberculosis," a long-feared and virtually untreatable form of the killer lung disease.Similar highly resistant cases have been noted before. In 2003, two Italian women died and there were 15 cases reported from Iran in 2009. That same year, The Associated Press reported on a case of a Peruvian teenager who was infected at home but diagnosed while visiting Florida.Such kind of TB has mostly been limited to impoverished areas, and has not spread widely. But experts believe there could be many undocumented cases.No one expects the Indian TB strains to rapidly spread elsewhere.The airborne disease is mainly transmitted through close personal contact and isn't nearly as contagious as the flu. Indeed, most of the cases of this kind of TB were not from person-to-person infection but were mutations that occurred in poorly treated patients.The Indian hospital that saw the initial cases tested a dozen medicines and none of them worked. A TB expert at the U.S. Centers for Disease Control and Prevention said they do appear to be totally resistant to available drugs."It is concerning," said Dr. Kenneth Castro, director of the CDC's Division of Tuberculosis Elimination. "Anytime we see something like this, we better get on top of it before it becomes a more widespread problem."Ordinary TB is easily cured by taking antibiotics for six to nine months. However, if that treatment is interrupted or the dose is cut down, the stubborn bacteria battle back and mutate into a tougher strain that can no longer be killed by standard drugs. The disease becomes harder and more expensive to treat.Tuberculosis is an age-old scourge that lies dormant in an estimated one in three people. About 10 percent of those people eventually develop active TB, which kills roughly 2 million a year, according to WHO. Each victim infects an average of 10 to 15 others every year, typically through sneezing or coughing.If a TB case is found to be resistant to the two most powerful anti-TB drugs, the patient is classified as having multi-drug-resistant TB (MDR). An even worse classification of TB — one the WHO accepts — is extensively drug-resistant TB (XDR), a form of the disease that was first reported in 2006 and is virtually resistant to all drugs.About 20 percent of the world's multi-drug-resistant cases were found in India, which is home to a quarter of all types of tuberculosis cases worldwide.