中山华都医院肛门科怎么样(中山大便拉血是怎么回事) (今日更新中)

LOS ANGELES, May 25 (Xinhua) -- NASA project managers bade farewell to the Mars rover Spirit on Wednesday after sending a final set of commands to the stranded vehicle.This marks the completion of one of the most successful missions of interplanetary exploration ever launched, NASA's Jet Propulsion Laboratory (JPL) said."Last night, just after midnight, the last recovery command was sent to Spirit," said John Callas, the Mars Exploration Rover Project manager at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Los Angeles."It would be an understatement to say this was a significant moment. Since the last communication from Spirit on March 22, 2010, as she entered her fourth Martian winter, nothing has been heard from her."NASA has tried in vain to regain communication with Spirit since it got stuck in sand about two years ago. The rover last communicated on March 22, 2010, as Martian winter approached and the rover's solar-energy supply declined.NASA checked frequently in recent months for possible reawakening of Spirit as solar energy available to the rover increased during Martian spring, but to no avail.A series of additional re-contact attempts ended on Wednesday, designed for various possible combinations of recoverable conditions, according to JPL."Our job was to wear these rovers out exploring, to leave no unutilized capability on the surface of Mars, and for Spirit, we have done that," said Callas.

STOCKHOLM, Jan. 26 (Xinhua) -- China's railway network, already the world's longest, is developing at record high speed and is to be doubled soon, Swedish daily Svenska Dagbladet reported on Wednesday."China's goal is to connect all important cities with railway lines," the report said.Collaborating with German Siemens, Japanese Kawasaki and Bombardier both in Canada and Sweden, China has built its own high-speed train CRH380A that can reach 486 kilometers per hour, cutting the journey between Beijing and Shanghai in half to about 4 hours.Construction of the high-speed railway network will also cover inland China, the report said. It aims to encourage more investment to move from coastal areas to inland China and ultimately raise the living standards in those regions.Within the next five years, a total of 3.5 trillion yuan (over 500 billion U.S. dollars) will be invested in high-speed track construction and train manufacturing, averaging at about 700 billion yuan (over 100 billion dollars) each year.Swedish companies such as Atlas Copco, SKF and Trelleborg have participated in China's railway and high-speed train development, according to the report.Hans Rosling, a development expert and also professor at Karolinska Institutet in Sweden, was quoted as saying that the construction of the high-speed railway network will bring about "good economy, good education, good medical care, better and longer life, all good things."

BEIJING, Feb. 24 (Xinhua) -- Graft remains one of the Chinese people's top concerns, as indicated by online polls from two mainstream media in China prior to the country's annual parliamentary and political advisory sessions.As of 9 p.m. on Thursday, over 54,000 Internet users voiced their concerns over "the fight against corruption and efforts to build a clean government" in an online survey launched by the Xinhua News Agency.Corruption came in at fourth place behind "curbing housing prices," "income distribution" and "control of commodity prices."The poll was launched by Xinhua and was meant to solicit public opinion ahead of the annual sessions of the National People's Congress (NPC) and the National Committee of the Chinese People's Political Consultative Conference (CPPCC).In a survey posted on People.com.cn, a website subsidiary of the People's Daily newspaper, "anti-graft" was among the most selected topics following "social security" and "judicial justice."Internet users pinned their hopes on the forthcoming parliamentary and political advisory sessions, which are scheduled to open in early March.They hope that their voices would be heard by the country's lawmakers and political advisors, who would represent them in the two sessions and would take all possible measures to tackle a number of social issues including the fight against corruption."I hope that the Central Committee of the Communist Party of China (CPC) combats graft comprehensively and severely to ensure a Party with a clean work style, a society with justice and assures the Chinese people that they would not be wronged," said an Internet user from Jiangxi province in a forum entitled "voicing my wishes to Premier Wen Jiabao at the 2011 two sessions " on xinhuanet.com.Internet users believe that the spread of corruption in some places had hindered China's economic development, undermined social stability and harmed the relationship between the people and officials.The fight against corruption, therefore, is a significant factor in determining whether or not China can reach its goals outlined in its Twelfth Five-year Program (2011-2015) on National Economic and Social Development, an Internet user wrote."Corruption has affected Chinese people's life through its spread into many social sectors. As the two sessions represent an open platform to reflect the people's will, citizens hope to push forward the cause of anti-corruption through legislation, thus addressing their common concerns." said Ren Jianmin, director of the Anti-corruption and Governance Research Center of Tsinghua University.The CPC has never relaxed its efforts to fight against corruption, experts say.Last year saw four ministerial-level Chinese officials placed under a graft probe or removed from their posts. Among these officials were Zhang Jiameng, former vice chairman of the Zhejiang Provincial People's Congress Standing Committee in southeast China, and Zhang Jingli, former deputy director of the State Food and Drug Administration.Another 11 ministerial-level officials were sentenced to life imprisonment or other severe punishments in 2010.On February 12 this year, Liu Zhijun, the Chinese Minister of Railways, was removed from his post as the Party chief of the ministry over an alleged "severe violation of discipline," becoming the latest senior official to be investigated in the country's battle against corruption.Experts believe that the downfall of high-ranking officials over corruption charges have clearly shown the determination of the CPC to enforce the Party's discipline, combat corruption and promote a clean work style.On January 10 this year, Chinese president Hu Jintao called for efforts to tackle prominent problems that have seriously harmed people's interests and sparked most public complaints during a plenary session of the CPC Central Commission for Discipline Inspection (CCDI), the Party's anti-graft body.He also pledged to combat graft and punish corrupt officials severely to win the trust of the people.Further, the CPC's drive to erase corruption yielded significant results last year.A total of 5,098 leaders at the county level or above have been punished and 804 officials were referred for prosecution last year, said Gan Yisheng, the deputy secretary of the CCDI, on January 6 this year.Despite the achievements accomplished by the CPC in its fight against corruption, Ren Jianmin believes that the anti-graft situation in China is grave and the task remain arduous.Problems concerning land acquisition and compensation, housing, food and drug safety, environmental protection, work place safety and equal access to education have been reported by the public.To handle these issues, CCDI secretary He Guoqiang urged officials on January 12 to "put people first" and "exercise the state's power for the people" when addressing problems that the public complains about.He, also a member of the Standing Committee of the CPC Central Committee Political Bureau, said that efforts should be enhanced to fight graft in fields that are most vulnerable to corruption and unhealthy practices."The two sessions have a special role to play in China's fight against corruption," said Li Chengyan, a professor at the School of Government in Peking University."Every year, the Party and the government will take effective measures after the two sessions, as a response to social concerns. The people and the media's focus on anti-graft work will push the government to solve relevant problems," he said.According to experts, however, what's more important is to put in place a sound system concerning anti-corruption, promote reform and ensure the implementation of existing measures.

You can think of NASA's Discovery program as a sort of outer-space American Idol: every few years the agency invites scientists to propose unmanned planetary missions. The projects have to address some sort of fundamental science question, and (this is the tough part) they have to be relatively cheap to pull off — say, half a billion dollars or so. Then the proposals go through a grueling competition before judges who aren't as nasty as Simon Cowell but who are every bit as tough. The one left standing at the end gets the equivalent of a recording contract: NASA supplies the funding and the launch vehicle, and away the winner goes — to orbit Mercury, as the Messenger spacecraft is doing right now; or to rendezvous with a couple of asteroids, as the Dawn mission will start doing this July; or to smash into a comet on purpose, a feat achieved by Deep Impact in 2005, a mission not to be confused with the movie of the same name. Now it's time for the next contenders. NASA has just announced that the first round of the latest Discovery competition is over, with three entries out of 28 moving on to the finals. They are, in increasing distance from Earth: the Geophysical Monitoring Station (GEMS) lander, which would use seismometers to study the interior of Mars; the Comet Hopper, which would do just that, leaping from place to place across the surface of Comet 46P/Wirtanen to see how different parts of the tumbling body react to heating by the sun; and the Titan Mare Explorer (TiME), which would plop into a sea of liquid hydrocarbons on Saturn's moon Titan — the first oceangoing vessel ever to set sail on another world. If you had to come up with a theme that ties all three missions together, it would be "origins." The Titan explorer, for example, will be studying a place that — in a crude way, at least — resembles the early planet Earth at a time when life arose here. Titan, with a thick atmosphere and a bizarro-world form of weather featuring toxic winds and hydrocarbon rain, is home to a mix of complex chemistry, complete with organic molecules. The oceans provide a medium in which the molecules can move around and interact with each other. It's even conceivable, though clearly a long shot, that some form of microscopic life already exists on this frigid moon. The Mars lander, by contrast, would visit a place where the seas — plain water in this case — vanished long ago. But the mission of GEMS goes far deeper than that. By analyzing Marsquakes on the Red Planet, GEMS will try to get a handle on what the interior of Mars is like. Scientists don't currently know whether the planet's core is liquid, like Earth's, or solid, or some mushy consistency in between. It all depends on how efficiently Mars has cooled since it formed 4.5 billion years ago, and that depends in turn on the planet's internal structure. "That's the mission," says Bruce Banerdt, of NASA's Jet Propulsion Laboratory, the lead scientist for GEMS. "We want to understand how Mars was built." Along with sensitive seismographic equipment, GEMS will drill down about 20 ft. (6 m) with a thermometer-equipped probe, trying to figure out how quickly the temperature rises with depth. "That will let us extrapolate all the way down to the center," Banerdt says, "which will tell us how fast Mars is cooling."

SHENYANG, Feb.3, (Xinhua) -- Fire gutted Thursday a five-star hotel in Shenyang, capital of northeast China's Liaoning Province, and no casualties had been found, local officials said.The fire broke out at 0:13 a.m. at Tower B, an apartment building of the Dynasty Wanxin building complex, and the flames quickly spread to the adjacent Tower A, which is largely a five-star hotel.All the 50-odd people in the hotel were evacuated. No casualties are found.The fire was effectively controlled, Shenyang Municipal Public Security Bureau officials told Xinhua at 4:35 a.m..Police said the fire was triggered by fireworks, which accidentally sparked off the external wall of the buildings. Further investigation into the cause and losses of the fire is still underway.Fire engines, whose water guns could jet water only 50 meters high, were helpless at the fire which flamed on the top of Tower A, 219 meters high.Power supply in the hotel was not cut off, which was said to keep the automatic spray facilities in operation in the building.Personnel from adjacent five-star Sheraton Shenyang Lido Hotel were evacuated, and residents around the Dynasty Wanxin building mainly stayed at home.Top leaders of the province and the city, including Chen Haibo, mayor of Shenyang, arrived at the site soon afterwards to direct efforts to quell the fire.The Dynasty Wanxin building complex, located in the bustling Qingnian Street of Heping District, comprises of three towers. The fire engulfed Tower A and B, with Tower C intact.

来源：资阳报