中山治疗便秘好方法中山肛泰医院在线咨询,中山肛门口有肿物,中山大便后有血是什么原因,中山痔疮是怎么引起的便血,中山混合痔去那治疗好,肛瘘手术中山哪家医院,中山肛门开裂瘙痒

CANBERRA, Dec. 9 (Xinhua) -- Scientists from Australia's University of New England on Friday said they had discovered the remarkably fossil isa metre-long arthropod with excellent vision called anomalocaris from Emu Bay Shale of South Australia.The scientists reported their finding on the anomalocaris in thescience journal Nature this week.It is reported that anomalocaris is a fearsome ancient predator that swam in the Cambrian oceans 500 million years ago. The researchers said the presence of anomalocaris would have driven the development of protective adaptations in prey animals. Such an escalatory 'arms race' would have seen, for instance, the evolution of such adaptations in prey as shells, camouflage and burrowing into sediments. "It has been unbelievably frustrating being able to see eyes like these at fossil sites like the Burgess Shale (in the Canadian Rocky Mountains), but not have any details. It is really refreshing to have our ideas about these animals confirmed at last, " comments Simon Conway Morris, a palaeontologist at the University of Cambridge, the United Kingdom.The research team was led by paleontologist Dr John Paterson, of the University of New England. He said the most surprising discovery of anomalocaris is the huge number of tiny hardened lenses in each eyes."When you consider that a modern housefly, for example, has about 3000 lenses, it's pretty impressive that an animal half a billion years old already has remarkable vision like this," Paterson said in statement."The fact that each eye in anomalocaris would have had over 16, 000 lenses means it would have very, very good resolution."Paterson said the acute vision of Anomalocaris gave it a distinct advantage over competing predators and prey, as many Cambrian animals either had poor vision or were completely blind. Its acute vision rivals or exceeds that of most living insects and was probably comparable to predatory dragonflies today.He said their findings support the idea that compound eyes evolved very early on in arthropod evolution, before the evolution of jointed legs or hardened exoskeletons.The research team hopes they can find the more fossil remains of Cambrian creatures in the Emu Bay Shale.

CANBERRA, Dec. 9 (Xinhua) -- Scientists from Australia's University of New England on Friday said they had discovered the remarkably fossil isa metre-long arthropod with excellent vision called anomalocaris from Emu Bay Shale of South Australia.The scientists reported their finding on the anomalocaris in thescience journal Nature this week.It is reported that anomalocaris is a fearsome ancient predator that swam in the Cambrian oceans 500 million years ago. The researchers said the presence of anomalocaris would have driven the development of protective adaptations in prey animals. Such an escalatory 'arms race' would have seen, for instance, the evolution of such adaptations in prey as shells, camouflage and burrowing into sediments. "It has been unbelievably frustrating being able to see eyes like these at fossil sites like the Burgess Shale (in the Canadian Rocky Mountains), but not have any details. It is really refreshing to have our ideas about these animals confirmed at last, " comments Simon Conway Morris, a palaeontologist at the University of Cambridge, the United Kingdom.The research team was led by paleontologist Dr John Paterson, of the University of New England. He said the most surprising discovery of anomalocaris is the huge number of tiny hardened lenses in each eyes."When you consider that a modern housefly, for example, has about 3000 lenses, it's pretty impressive that an animal half a billion years old already has remarkable vision like this," Paterson said in statement."The fact that each eye in anomalocaris would have had over 16, 000 lenses means it would have very, very good resolution."Paterson said the acute vision of Anomalocaris gave it a distinct advantage over competing predators and prey, as many Cambrian animals either had poor vision or were completely blind. Its acute vision rivals or exceeds that of most living insects and was probably comparable to predatory dragonflies today.He said their findings support the idea that compound eyes evolved very early on in arthropod evolution, before the evolution of jointed legs or hardened exoskeletons.The research team hopes they can find the more fossil remains of Cambrian creatures in the Emu Bay Shale.

BEIJING, Oct. 24 (Xinhuanet) -- Thirty-year-old Chen Liang acquired his iPhone 4S in a relatively straightforward way without visiting the gray market. He typed "Looking for an iPhone 4S through weibo" on the Chinese equivalent of Twitter at 9 am on Oct 17 and secured one by 2 pm that day.The software engineer was lucky. Thousands of Chinese Apple fans are desperate for the 4S regardless of the price and effort required after China was left out of Apple's list of first and second groups of countries where it launched its latest product."A friend's friend in Canada put me in contact with a supplier and I'm getting one for just 5,500 yuan (9). Unauthorized Apple retailers are setting their floor price at 8,000 yuan," said Chen, from Jiangsu province.A proud Apple customer shows off the new iPhone 4S he purchased at an Apple store in Munich, Germany."I need to have one because I see the potential of its cloud computing service and artificial intelligence application. That's currently a wide open area in China. Simply speaking, other smartphones allow you to access search engines while the 4S's cloud search using Siri - a voice recognition and talking assistant - helps to filter irrelevant results and makes suggestions for you. My work-related curiosity drove me to get one because it is the future for phones."Jin Jianhan, who works at a Shanghai-based IT company, says he will do whatever it takes to get a 4S because "it's very important to get an Apple product when it's first launched".Jin plans to contact his friends in the United States to see whether they can send him one and to keep an eye on the Hong Kong market in case the special administrative region gets the green light to sell the devices in the third round of agreements."I'd try both ways and go for the overseas one first even it won't cover my domestic Apple guarantee," said Jin. "I will take the Hong Kong 4S when it's available to replace the American one."In its first round of agreements, Apple launched the iPhone 4S in the United States, Canada, Australia, the United Kingdom, France, Germany and Japan. Apple said on Oct 17, the third day after its release, that more than four million iPhone 4S devices had been sold. That figure is more than double the 1.7 million units of the iPhone 4 that Apple sold during its first three days on the market in June last year.The second group of countries to be licensed were mostly other European states. They will get the product by the end of October. Apple China refused to give a date for when it will be sold on the mainland.Meanwhile, Apple fans all over the world are paying their respects to Apple guru Steve Jobs by snapping up the iPhone 4S in record numbers. Wang Bo, who works as an industrial designer in Sydney, Australia, reserved his at a local store."It's the last Apple product that he (Steve Jobs) ever worked with," said Wang. "I'm buying it as a souvenir."In Huaqiangbei, an area in Shenzhen known for its many consumer electronics shops, unauthorized Apple dealer Zhou Bin has been happy to work overtime since the night of Oct 15, the first day that he received supplies of the iPhone 4S.

SHIJIAZHUANG, Dec. 3 (Xinhua) -- More than 3.48 million people in rural areas of north China's Hebei Province have been given access to safe drinking water this year, a local official said Saturday.Authorities in the province have invested more than 1.7 billion yuan (270 million U.S. dollars) so far in 2011 in building drinking water infrastructure, said Liang Jianyi, deputy director of the Hebei Provincial Department of Water and Resources.More than 32 million rural people in Hebei, especially in mountainous and coastal areas, had long suffered from unsafe water, with problems including high fluorine and alkaline contents, Liang said.From 2005 to 2010, the provincial authorities put almost 6 billion yuan into providing safe drinking water for 13 million rural residents, he added.

HELSINKI, Nov.23 (Xinhua) -- Nokia Siemens Networks is planning to cut its workforce by 17,000 worldwide by the end of 2013, the company said in a statement on Wednesday in Espoo, Finland.The company said the measures are part of an extensive global restructuring program, in which it will focus on mobile broadband and services."We need to take the necessary steps to maintain long term competitiveness and improve profitability in a challenging telecommunications market," said the company's Chief Executive Rajeev Suri in the statement.Rajeev Suri called the job cuts regrettable but necessary, and said the company would provide support for individuals and communities affected by the cuts, but defended the decision on economic grounds.Nokia Siemens is aiming to cut operating expenditures by around a billion euros over two years.Some 74,000 people currently work for the Espoo-based company in 150 countries, around 7,000 in Finland. The company will announce the geographical distribution of the job cuts later on.