治痔疮应该去中山哪几家医院(中山得了痔疮会有什么症状) (今日更新中)

WASHINGTON, May 25 (Xinhua) -- Two U.S. astronauts conducted the third of four scheduled spacewalks for space shuttle Endeavour 's STS-134 mission on Wednesday morning, the U.S. National Aeronautics and Space Administration (NASA) announced.Endeavour's mission specialists Drew Feustel and Mike Fincke completed a six-hour-54-minute spacewalk at 8:37 a.m. EDT (1437 GMT). They completed all planned tasks, installing cables to increase redundancy for the power system on the Russian segment of the station, completing the external wireless antenna system work Feustel and Greg Chamitoff began during the first spacewalk, and installing a power and data grapple fixture to Zarya. The fixture will allow the station's robotic arm to "walk" to the Russian segment, extending its reach by using that grapple fixture as a base.It was the 247th spacewalk conducted by U.S. astronauts, and the 158th in support of space station assembly and maintenance, totaling 995 hours and 13 minutes. If everything goes as planned, the 1,000th hour of space station assembly and maintenance will be logged on Friday.Endeavour lifted off on May 16 from the Kennedy Space Center in Florida, to deliver to the International Space Station a 2-billion- dollar, multinational particle detector known as the Alpha Magnetic Spectrometer (AMS).AMS, a particle physics detector, is designed to search for various types of unusual matter by measuring cosmic rays. Its experiments are designed to help researchers study the formation of the universe and search for evidence of dark matter, strange matter and antimatter.NASA's 30-year-old shuttle program is ending due to high operating costs. The Obama administration wants to spur private companies to get into the space taxi business, freeing NASA to focus on deep space exploration and new technology development.There were initially five space shuttles in the fleet -- Challenger exploded shortly after liftoff in 1986 and Columbia disintegrated on its way back to Earth in 2003. Discovery retired earlier this year, while Endeavour is currently on its final mission. A last mission for Atlantis is scheduled for July, though funding for Atlantis remains in question.The sixth shuttle, Enterprise, did test flights in the atmosphere but was never flown into space. It is already on display at a museum outside Washington.When the U.S. space shuttle program officially ends later this year, the Russian space program's Soyuz capsule will be the only method for transporting astronauts to and from the station.

SAN FRANCISCO, May 3 (Xinhua) -- Apple Inc. announced on Tuesday that it has updated its iMac all-in-one desktop, adding Intel's next generation quad-core processors, Thunderbolt data ports and a new HD camera.Starting at 1,199 U.S. dollars, the new iMac is up to 70 percent faster and its new graphics deliver up to three times the performance of the previous generation, Apple said in a statement.The new iMac features quad-core Intel Core i5 processors with an upgrade option to Core i7 processors.The 21.5-inch model has a single Thunderbolt port while the 27- inch has two, in addition to four USB 2.0 inputs and a FireWire 800 port.Thunderbolt, which debuted with Apple's updated MacBook Pro notebooks in February, is also an Intel design bringing together high-speed data transfer and high-definition display onto a single cable. It can transfer a full-length HD movie in less than 30 seconds with a speed of 10 gigabits per second, which is twice the speed of USB 3.0, 12 times faster than FireWire 800 and up to 20 times faster than USB 2.0.The new iMac also includes a built-in FaceTime HD camera, which supports high-definition video calls, Apple said.

BEIJING, May 25 (Xinhua) -- A researcher with the Chinese Academy of Agricultural Sciences (CAAS) said Wednesday that plant hormones, if used properly, are not a risk to human health."Irregular use of plant growth substances may cause plants to grow excessively fast or affect the taste, but will not cause harm to human health," Ye Zhihua said in an interview with Xinhua.His remarks come after media reports in China about "exploding watermelons," caused by the excessive use of phytohormone, have aroused public concern over the safety of hormones that stimulate plant growth.Ye said plant hormones used to promote growth have the same or similar effects as natural plant hormones, and fruit and vegetables sold at the market carried limited residue of the hormones.More than 100 types of plant hormones, such as ethephon and gibberellin acid, are used in agriculture and forestry sectors around the world, Ye said, adding 38 types of plant hormones have been registered in China.For example, seven plant hormones including thidiazuron and nucleotide are approved for use on cucumbers in China. The purpose is to stimulate the growth of female flowers and increase fruit yields, Ye said.Ye added that China places plant hormones in the category of pesticides control, which means the hormones are subject to strict management from production to utilization.

CARACAS, March 30 (Xinhua) -- The number of confirmed cases of the A/H1N1 influenza in Venezuela has risen to 482 this year, Health Minister Eugenia Sader said on Wednesday.According to the latest report, the state of Merida in southeastern Venezuela has 189 A/H1N1 influenza cases, the biggest number ever reported, which was followed by the Capital District of Caracas with 112 cases. The other 181 cases were confirmed in 17 of 24 Venezuelan states.The first case for this year was reported in Merida earlier this month.Sader said that the Venezuelan government was trying to prevent the spread of the disease. Some 3 million people have been vaccinated against the virus.Three patients infected with the A/H1N1 influenza virus have died in the country this year, according to Sader.The A/H1N1 influenza can cause deadly pneumonia if it is not treated early.

BEIJING, Feb. 13 (Xinhua) -- Chinese Premier Wen Jiabao has invited a group of ordinary people from all walks of life to seek their opinions on drafts of a government work report and the country's economic and social development blueprint for the next five years.The representatives, including a farmer, a migrant worker, a rural doctor and a community worker, were invited to Zhongnanhai, the central leadership compound in downtown Beijing, on Jan. 25. Some details of the meeting were made public on Sunday.At the meeting, Wen said, "Ordinary people are in the best place to evaluate government's work, and listening to public opinion will allow us to know how government policies are carried out at grass-roots level, and what difficulties people are facing."Liu Hongwei, a farmer from northeastern Heilongjiang Province, suggested that government increases investment in agricultural water conservancy projects in case of natural disasters such as severe drought this winter in north China.Wen said this year the government would invest more in water conservancy while starting retrofitting the grid in rural areas to guarantee electricity supply for both residential consumption and irrigation of crops.Wen also assured Liu that the government would raise purchasing price of grains so as to protect the interests of grain farmers.Xie Yuanli, an electric welder from northeastern Jilin Province, expressed his wish that governments give greater support and care to industrial workers.Dong Zhiping, a migrant worker working on construction site in central Hunan Province, complained that some enterprise owners refuse to pay migrant workers insurance against work-related injuries, and many migrant workers are not aware of their rights."Once a worker gets injured, his family would suffer grave financial difficulties without the insurance cover," Dong said.Wen said the government was working on the issue, such as promoting better implementation of government regulations on workplace injury-related insurance, which became effective in 2003.The meeting also touched upon issues of favorable policies to small and medium-sized enterprises, fair treatment of village doctors, stronger support to facilities for senior citizens, boosting space science and technology and improving vocational training, among others.The drafts of the 12th five-year program, or the national development plan for 2011 to 2015, and the government work report will be delivered for review early next month at a plenary session of the National People's Congress (NPC), China's national legislature.

来源：资阳报