成都血栓性{静脉炎}治疗(成都医治静脉曲张) (今日更新中)

LOS ANGELES, July 3 (Xinhua) -- Warming of the ocean's subsurface layers will melt underwater portions of the Greenland and Antarctic ice sheets faster than previously thought, increasing the sea level more than already projected, a new study suggests.The subsurface ocean layers surrounding the polar ice sheets will warm substantially as global warming progresses, according to the study led by researchers from the University of Arizona (UA).In addition to being exposed to warming air, underwater portions of the polar ice sheets and glaciers will be bathed in warming seawater, said the study appearing on the website of the American Association for the Advancement of Science (AAAS) on Sunday.The research, based on 19 state-of-the-art climate models, proposes a new mechanism by which global warming will accelerate the melting of the great ice sheets during this century and the next."To my knowledge, this study is the first to quantify and compare future ocean warming around the Greenland and the Antarctic ice sheets using an ensemble of models," said lead author Jianjun Yin, a UA assistant professor of geosciences.According to the study, the subsurface ocean along the Greenland coast could increase as much as 3.6 F (2 C) by 2100.Most previous research has focused on how increases in atmospheric temperatures would affect the ice sheets, he said."Ocean warming is very important compared to atmospheric warming because water has a much larger heat capacity than air," Yin said. "If you put an ice cube in a warm room, it will melt in several hours. But if you put an ice cube in a cup of warm water, it will disappear in just minutes."Given a mid-level increase in greenhouse gases, the researchers found the ocean layer about 650 to 1,650 feet (200 to 500 meters) below the surface would warm, on average, about 1.8 F (1 C) by 2100. Along the Greenland coast, that layer would warm twice as much, but along Antarctica would warm less, only 0.9 F (0.5 C)."No one has noticed this discrepancy before -- that the subsurface oceans surrounding Greenland and Antarctica warm very differently," Yin said.Part of the warming in the North comes from the Gulf Stream carrying warm subtropical waters north. By contrast, the Antarctic Circumpolar Current blocks some of the subtropical warmth from entering the Antarctic's coastal waters.Even so, the Antarctic ice sheet will be bathed in warming waters, according to the study.This paper adds to the evidence that sea level would rise by the end of this century by around one meter and a good deal more in succeeding centuries, the study noted.The study, "Different Magnitudes of Projected Subsurface Ocean Warming Around Greenland and Antarctica," is scheduled for the upcoming edition of Nature Geoscience later this month.

BEIJING, July 22 (Xinhuanet) -- Regulation is needed to govern rapidly expanding research in animals containing human tissue or genes, according to the Britain's Academy of Medical Sciences.Using animals with limited humanized traits is not new. Genetically engineered mice containing human DNA are already a mainstay of research into new drugs for diseases like cancer.For instance, Chinese scientists have already introduced human stem cells into goat fetuses and U.S. researchers have studied the idea of creating a mouse with human brain cells.But Martin Bobrow, a professor of medical genetics at the University of Cambridge, who led the Academy's working group, said there were three areas of particular concern."Where people begin to worry is when you get to the brain, to the germ cells, and to the sort of central features that help us recognize what is a person, like skin texture, facial shape and speech," he said.His report recommends that government should put in place a national expert body, working within the existing system for regulating animal research, to oversee such sensitive areas.British ministers said they welcomed the report and would consider its recommendations carefully.

KIEV, Aug. 2 (Xinhua) -- Ukraine's regional health authority declared Tuesday a cholera epidemic in the eastern region of Donetsk had ended.All 26 people who had been treated for the disease had been discharged from hospital, the press-service of the Donetsk Regional Sanitary and Epidemiological Service said on its official website.As of this week, no new cases had been registered, the statement said.The cholera outbreak hit eastern Ukraine in late May. The disease can cause rapid dehydration and death.The outbreak was believed to be associated with fish and drinking water supplies from the Sea of Azov.

BEIJING, July 5 (Xinhuanet) -- A black iPhone 4 prototype has appeared for sale on eBay and the highest bidding hit one million U.S. dollars as of Monday, according to media reports.The listing is set to expire on July 11.The seller "jtmaxo" said, "I am a licensed cell phone repairman, this iPhone was bought from a person who really didn't know who he had."The seller later was frustrated to find that it was unable to be activated via iTunes.According to a check through Apple’s database, it is indeed listed as a prototype, and it has the tester code "DF1692" etched in the bottom right corner.Different from the iPhone 4 sold on markets, the handset lacks the + and - on the volume buttons, although the screen is fully functional.The price for the prototype will not remain as high as it is as the seller said that several "non-legitimate" bids have already been deleted.

MANILA, June 14 (Xinhua) -- At least 200 people, mostly children, have been taken to hospitals after allegedly suffering from food poisoning at a birthday party in the northern Philippine province of Bulacan, local newspaper Manila Bulletin reported Tuesday.Most of the victims suffered from stomach and chest pains, diarrhea and vomiting, local health officer Dr. Rizalli Lucas was quoted as saying.The victims claimed the cause of their food poisoning was the spaghetti served during a birthday celebration over the weekend in a village of Calumpit town.James P. de Jesus, mayor of Calumpit, said the situation is now contained and controlled but they still have to implement health measures and to determine the cause of the alleged food poisoning.Police have started investigating the incident.

来源：资阳报