吉林治阳痿早泄的好医院(吉林割包皮痛吗) (今日更新中)

WASHINGTON, Nov. 8 (Xinhua) -- NASA plans to add an unmanned flight test of the Orion spacecraft in early 2014 to its contract with Lockheed Martin Space Systems for the multipurpose crew vehicle's design, development, test and evaluation, the U.S. space agency announced Tuesday.This test supports the new Space Launch System (SLS) that will take astronauts farther into space than ever before, and provide the cornerstone for America's future human spaceflight efforts."President Obama and Congress have laid out an ambitious space exploration plan, and NASA is moving out quickly to implement it," NASA Associate Administrator for Communications David Weaver said in a statement. "This flight test will provide invaluable data to support the deep space exploration missions this nation is embarking upon."Orion is part of the now defunct Constellation program canceled under President Barack Obama's 2011 budget proposal. Instead Obama urged NASA to work toward sending humans to an asteroid and then on to Mars -- and NASA says it wants to go ahead with that as quickly as possible.This Exploration Flight Test, or EFT-1, will fly two orbits to a high-apogee, with a high-energy re-entry through Earth's atmosphere. Orion will make a water landing and be recovered using operations planned for future human exploration missions. The test mission will be launched from Cape Canaveral to acquire critical re-entry flight performance data and demonstrate early integration capabilities that benefit the Orion, SLS."The entry part of the test will produce data needed to develop a spacecraft capable of surviving speeds greater than 20,000 mph and safely return astronauts from beyond Earth orbit," Associate Administrator for Human Exploration and Operations William Gerstenmaier said. "This test is very important to the detailed design process in terms of the data we expect to receive."

BEIJING, Jan. 25 (Xinhua) -- China's railway authorities said Wednesday that it would put 315 more trains into service on Wednesday to cope with Lunar New Year travel demand, compared with 159 on Tuesday.About 3.7 million passengers hit the rails on Tuesday, up from 2.29 million on Monday, the Ministry of Railways said in a statement on its website.The ministry expected a post-festival travel peak on Friday.The country's trains carried a total of 83.46 million passengers from Jan. 8 to 22, up 7.9 percent from a year earlier, the ministry said in a statement issued on Tuesday.The 40-day Spring Festival travel season kicked off on Jan. 8 this year, with hundreds of millions of people, mainly migrant workers and college students, heading home for the most important festival in China.A total of 3.16 billion passenger trips are expected during the year's travel rush, up 9.1 percent from a year earlier. Of those journeys, 235 million are likely to be made by train, up 6.1 percent year-on-year.The Spring Festival, or Chinese Lunar New Year, falls on Jan. 23 this year. 

BEIJING, Nov. 30 (Xinhuanet) -- Heading football frequently may cause brain damage leading to subtle but serious declines in thinking and coordination skills, a new study suggested as quoted by media reports Wednesday.Researchers used an advanced MRI (Magnetic Resonance Imaging) technique to analyze changes in brain white matter of 32 adult amateur soccer players who head balls 436 times a year on average.The study found players who head football quite frequently -- with 1,000 or more a year -- showed abnormalities similar to traumatic brain injuries suffered in car accidents."This is the first study to look at the effects of heading on the brain using sophisticated diffusion tensor imaging," said Dr. Michael Lipton, a leading researcher and associate director of the Gruss Magnetic Resonance Research Center at the Albert Einstein College of Medicine in New York City."We found the real implication for players isn't from hitting headers once in a while, but repetitively, which can lead to degeneration of brain cells," he added.The researchers compared neurological images of study participants, whose average age was 31, and found those with the highest volume of headers had abnormalities in five areas of the brain, responsible for attention, memory, physical mobility and high-level visual functions.The findings come in the wake of mixed reports on the so-called "cognitive" consequences of frequently heading soccer balls at practice.Dr. Chris Koutures, a pediatrician and sports medicine specialist in Anaheim Hills, California, said the retrospective imaging study was fascinating, but needs more data to effectively determine safe header limits, especially for younger players.Dr. Lipton agreed neuropsychological damage from headers would be hard for a coach or physician to notice since cognitive problems develop gradually, and even players might not be aware of mild memory loss."We can't tell an individual today not to be heading a ball, but caution is a good thing," Lipton said. "We need more research for definitive answers and we have the advanced imaging tools to do it."

BEIJING, Oct. 13 (Xinhuanet) -- Scientists have decoded the genome of Black Death which caused one of the worst plagues in human history.The finding was published Wednesday in the scientific journal Nature.A team of German, Canadian and American scientists collected the bacteria's DNA from ancient plague victims' teeth and bones, which were excavated from the burial ground in London.With a careful NDA comparison between the ancient bacteria and the modern strains, scientists found the direct variant of the medieval bacteria still exist today.Black Death's descendants kill around 2,000 people a year, mostly in the developing world, the scientist said."This will provide us with direct insights into the evolution of human pathogens and historical pandemics," said Johannes Krause Of Germany's University of Tubingen, who worked on the study.Black Death, the fatal plague of medieval Europe, wiped out some 30 million people -- about 50 percent of the population on the continent, within just five years, between 1347 and 1351.

BEIJING, Jan. 7 (Xinhua) -- The two-day National Financial Work Conference concluded Saturday, laying out development plans for the financial sector in the coming five years, according to a statement released after the meeting.Chinese Premier Wen Jiabao was present at the conference and delivered a keynote speech.Such a conference is held every five years. Similar meetings were held in 1997, 2002 and 2007.

来源：资阳报