中山肛裂最好医院(中山天天便血有什么危害) (今日更新中)

LOS ANGELES, April 1 (Xinhua) -- A NASA Gulfstream-III aircraft equipped with a synthetic aperture radar is scheduled to depart Sunday, April 3 on a nine-day mission to image Hawaii volcanoes, the Jet Propulsion Laboratory (JPL) announced on Friday.The aircraft will fly from the Dryden Aircraft Operations Facility in Palmdale, California to the Big Island of Hawaii to study the Kilauea volcano that recently erupted, said JPL in Pasadena, Los Angeles.The mission will help scientists better understand processes occurring under Earth's surface, JPL said.Developed by JPL, the Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR, uses a technique called interferometric synthetic aperture radar that sends pulses of microwave energy from the aircraft to the ground to detect and measure very subtle deformations in Earth's surface, such as those caused by earthquakes, volcanoes, landslides and glacier movements.As the Gulfstream-III flies at an altitude of about 12,500 meters, the radar, located in a pod under the aircraft's belly, will collect data over Kilauea, according to JPL.The UAVSAR's first data acquisitions over this volcanic region took place in January 2010, when the radar flew over the volcano daily for a week. The UAVSAR detected deflation of Kilauea's caldera over one day, part of a series of deflation-inflation events observed at Kilauea as magma is pumped into the volcano's east rift zone.This month's flights will repeat the 2010 flight paths to an accuracy of within 5 meters, or about 16.5 feet, assisted by a Platform Precision Autopilot designed by engineers at NASA's Dryden Flight Research Center on Edwards Air Force Base, California, JPL said.By comparing these camera-like images, interferograms are formed that reveal changes in Earth's surface, said JPL.Between March 5 and 11, 2011, a spectacular fissure eruption occurred along the east rift zone. Satellite radar imagery captured the progression of this volcanic event."The April 2011 UAVSAR flights will capture the March 2011 fissure eruption surface displacements at high resolution and from multiple viewing directions, giving us an improved resolution of the magma injected into the east rift zone that caused the eruption," said JPL research scientist Paul Lundgren."Our goal is to be able to deploy the UAVSAR on short notice to better understand and aid in responding to hazards from Kilauea and other volcanoes in the Pacific region covered by this study," Lundgren added.

WASHINGTON, Feb. 7 (Xinhua) -- The U.S. International Trade Commission (USITC) determined Monday that imports of drill pipe and drill collars from China threatened the U.S. industry with material injury.As a result of the USITC's affirmative threat determinations, the U.S. Commerce Department will issue anti-dumping and countervailing duty orders on imports of these products from China.On January 4, the U.S. Commerce Department announced its affirmative final determinations in the anti-dumping duty and countervailing duty investigations on imports of drill pipe from China. The department determined that Chinese producers and exporters had sold drill pipe in the United States at margins ranging between 0.00 and 69.32 percent, while they have received countervailable subsidies of 18.18 percent ad valorem.In the anti-dumping investigation, mandatory respondent China's DP Master Manufacturing Co., Ltd. and Jiangyin Liangda Drill Pipe Co., Ltd. received a dumping rate of 69.32 percent. Baoshan Iron and Steel Co., Ltd. as well as Shanxi Yida Special Steel Imp. and Exp. Co., Ltd. each received a dumping rate of 0.00 percent, according to the department.The USITC did not specify the combined value of imported drill pipe and drill collars from China in the statement. A determination will be considered as affirmative if there is a 3-3 voting result within the USITC Commissioners.Drill pipe and drill collars are hollow drill string components used in drilling rigs, particularly those intended to extract oil and gas, to transmit power and conduct lubricant during the drilling process.

BEIJING, March 19 (Xinhua) -- In spite of the fact that snow still covers his farmland, Jiang Chen has been busy stocking fertilizers and seeds to prepare for the coming spring farming season."I am almost ready for the sowing," said Jiang, a 64-year-old peasant who farms five hectares of cropland in Liujia Township in Yushu City, northeast China's Jilin Province. "But the costs are rising so I still want to look for better seeds providing a higher yield this year."As the Chinese government continued policies to assure a good grain harvest this year, millions of farmers like Jiang in China's major grain-producing regions such as Jilin, Heilongjiang, Shandong and Henan provinces are now gearing up to finalize preparations for the coming sowing season.The central government's incentives in 2011 include increases in minimum rice purchase prices by 9.7 percent to 21.9 percent from last year, as well as 24.9 billion yuan (about 3.77 billion U.S. dollars) in subsidies to the national grain risk fund for farmers."Though farmers are richer now than before, our economic strength remains relatively weak as compared with urban residents," Jiang said.He noted that he was considering investing less this year because the cost of agricultural production has increased year after year.The average urea price from manufacturers and retailers rose about 10 percent from last year to about 1,980 yuan and 2,100 yuan per tonne at a grain and oil wholesale market near Yuquan Road in Beijing, where many farmers from neighboring Hebei, Henan and Shandong provinces buy agricultural fertilizers and additives.Urea is the primary fertilizer used by Chinese grain growers, though many of the farmers said that they would reduce the use the compound in their fields due to rising prices and the impact on wheat caused by the widespread drought in north China this winter.Wang Quan, the president of China National Agricultural Means of Production Group Corp., the country's largest supplier of agricultural materials, predicted that the use of urea during the spring farming season would be between 20 million tonnes to 25 million tonnes, which is about two fifths of the year's total.Wang said that the urea price is around 400 U.S. dollars per tonne in global markets, or 15.7 percent higher than the domestic price."I think it takes time for Chinese farmers to accept the price hikes gradually," he added.Analysts say that the different perceptions on urea prices between manufacturers and farmers may have affected China's crops because the reduced use of fertilizers usually mean less grain output in the country since many farmers depend more on fertilizers, rather than technology to boost production.China's grain output rose 2.9 percent last year to 546.41 million tonnes, marking the seventh consecutive year of growth. The country aims to keep its 2011 grain production over 500 million tonnes, according to an executive meeting of the State Council, or the Cabinet, Thursday.Chinese Premier Wen Jiabao said last month that rising costs of grain production, the lingering drought in north China's major wheat-growing regions and the weakening of agricultural production in some areas would directly affect China's summer grain output.Facing challenges such as higher costs for growing grain, Jiang believed that he could generate higher income from his crops this year with the support of the agricultural sector by the government."If the grain prices also rise this year, I can still earn a net income of 10,000 yuan for every hectare of farmland," Jiang said."I hope to keep my farmland from being seized for industrial or residential development," he added.

ISTANBUL, May 3 (Xinhua) -- The world's water consumption will increase by 40 percent over the next two decades and efforts to meet this demand must increase radically, the secretary-general of the 5th World Water Forum said here on Tuesday.Oktay Tabasaran said in his opening speech at the World Water Forum that "water consumption will increase by 40 percent in the coming 20 years, reaching 6.9 trillion cubic meters per year ( compared with the 4.5 trillion used currently), and an amount of 200 billion U.S. dollars must be spent annually in order to afford this."He said such figures indicated the urgent need for countries to engage in efficient cooperation with each other to address water- related issues.Some 50 out of the world's 188 countries have serious concerns in providing drinking and irrigation water, due to careless and inefficient use of water, according to Ismail Ugur, the general director of Turkey's State Waterworks Authority."If we fail to come up with solutions, starting from 2015 there will be droughts (in many parts of the world) and people will start suffering from diseases caused by lack of water, as of 2025, " Ugur said.Ekmeleddin Ihsanoglu, head of the Organization of the Islamic Conference (OIC), said that ensuring reliable access to water is crucial to promoting peace and security in the Middle East, where many countries are facing dramatic declines in available water."In some regions of the Muslim world, water availability is predicted to be cut in half by 2050, even without taking into consideration the effects of climate change," he said in his opening speech.The OIC chief called for increased cooperation among member states and countries outside the region, announcing the group's progress in preparing its own "Water Vision" document and forming an OIC Water Council to address water-related concerns."In its first phase, the Water Vision will outline a framework of cooperation on water-related issues in terms of water-sharing experience, capacity development, technology transfer, water governance and institutional reforms," Ihsanoglu said.He cited the Friendship Dam, to be constructed on the Orontes River at the Turkish-Syrian border, as an excellent example of cooperation and peace among neighboring countries in the field of water.Charity Ngilu, minister for water and irrigation of Kenya, stressed the importance of water in promoting peace, especially in regions where water scarcity prevails."There have been many conflicts caused by water scarcity not only among African countries, but even within regions of the same country," She said, adding Kenya would ask Turkey for cooperation and assistance in water management and other related issues.

CHICAGO, Jan. 21 (Xinhua) -- Chinese President Hu Jintao left Chicago for China on Friday after concluding a state visit to the United States, during which he and his U.S. counterpart Barack Obama agreed to build a China-U.S. cooperative partnership based on mutual respect and mutual benefit.Hu, who began his four-day visit Tuesday, had extensive and in-depth discussions with Obama at the White House on Wednesday on major bilateral, regional and world issues.Chinese President Hu Jintao shakes hands with U.S. President Barack Obama during a bilateral meeting at the White House in Washington, the United States, Jan. 19, 2011.The two sides reached "important agreement on China-U.S. relations and major international and regional issues of shared interests," the Chinese president said when he and Obama met the press following their discussions."We both agree to further push forward the positive, cooperative and comprehensive China-U.S. relationship," Hu said, adding that both sides also pledged to forge "a China-U.S. cooperative partnership based on mutual respect and mutual benefit" for the benefit of the two countries and beyond.

来源：资阳报