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XINING, Oct. 3 (Xinhua) -- China will put environmental concerns as top priority in tackling ways to exploit combustible ice, a kind of natural gas hydrate, in the permanent tundra in its northwest plateau region, said a combustible ice project leader.     "We do not need to drill very deep to get the flammable frozen compound from tundra here in Muli Prefecture in Qinghai Province. However, as the sample is taken out, methane gas is easily released into the atmosphere," said Wen Huaijun, chief engineer of the combustible ice project in Qinghai.     He said the project team under the China National Administration of Coal Geology is carrying out research to guarantee that the exploitation of the frozen natural gas does not cause environmental problems.     Combustible ice is regarded as a potential source of alternative energy to coal and oil. One cubic meter of combustible ice can release 164 cubic meters of natural gas.     The Ministry of Land Resources said on Friday that the prospective volume of the natural gas hydrate in the country's frozen earth regions is estimated to reach 35 billion tonnes of oil equivalent.     China announced the first discovery of the resource under the bed of the South China Sea in May 2007.     Wen said the environmental threats from the use of the resource even in a land-based region is enormous, because it releases carbon dioxide or methane into the atmosphere.     "The plateau region is very sensitive to environmental changes. The biological conditions here are vulnerable," he said.     Combustible ice usually exists in seabed or tundra areas (two mediums having the strong pressure and low temperature necessary to its stability). It can be lit up like solid ethanol, which is why it has the name "combustible ice."     Wen said the combustible ice research project has been carried in Muli Prefecture, 4,100 meters above sea level, since 2004.     "It still takes time and a huge amount of research investment to realize the dream of exploiting the resource, while ensuring the environment," he said.     Wang Jianbin, deputy director of the Qinghai Bureau of Land Resources, said at the present stage, the project focus is still to ascertain locations of the deposit, and carry out a feasibility study on its exploitation.

URUMQI, Aug. 4 (Xinhua) -- Seven hundred and eighteen people have been detained for being implicated in the Urumqi riot on July 5 which left 197 people dead and more than 1,600 injured, Urumqi City police chief Chen Zhuangwei said Tuesday.     Chen, head of the Public Security Department of Urumqi, capital of the Xinjiang Uygur Autonomous Region, said evidence collection had been a heavy load for the city's police force. It had involved examinations at the crime scenes and DNA evaluations, but it had been carried out swiftly. Chen Zhuangwei (C), head of the Public Security Bureau of Urumqi City, addresses a press conference in Urumqi, capital of Xinjiang Uygur Autonomous Region in northwest China, Aug. 4, 2009. Chen said police had visited more than 1,000 people, including those injured in the riot and families whose members had lost their lives in the unrest. Police had also inspected 530 shops and 943 motor vehicles damaged during the violence. As well, they collected and examined 3,318 pieces of evidence, and obtained 2,169 photos of crime scenes in Urumqi. Chen Zhuangwei, head of the Public Security Bureau of Urumqi City, addresses a press conference in Urumqi, capital of Xinjiang Uygur Autonomous Region in northwest China, Aug. 4, 2009.

URUMQI, Sept. 13 (Xinhua) -- Tests of victims' samples found no dangerous viruses or chemicals involved in a string of bizarre hypodermic syringe stabbings in Urumqi, capital of China's far western Xinjiang region, a military medical expert said Sunday.     Qian Jun, head of the disease control and biological security office with China's Academy of Military Medical Sciences, said the academy's Beijing lab found no needle injury samples were tainted with radioactive substances, toxic chemicals or HIV virus.     The samples were not contaminated with other dangerous viruses or substances either, such as anthrax bacillus, yersinia pestis, francisella tularensis, brucella and botulinum toxin, Qian told a press briefing.     Local and military medical experts have rechecked about 250 victims and found no clearly worsening wounds or serious illnesses, he noted.     By Sept. 4, local authorities had confirmed 531 victims of hypodermic syringe stabbings in Urumqi, 171 of whom showed obvious syringe marks. The majority of the victims were of the Han ethnic group.     Tens of thousands of angry and panic residents in Urumqi took to the streets last week, protesting against needle attacks and demanding security guarantees.     Qian suggested offering more psychological counselling to ease anxiety and depression of the victims as many are haunted with lingering fears of hidden infections.     The Urumqi General Hospital affiliated to the Lanzhou Military Area Command has arranged three psychological experts and opened four counselling hotlines to help ease victims' fears and panic.     Wang Wenxian, deputy director of the Urumqi municipal public security bureau, said the needle stabbings did not cause serious damages to the victims' health, but they caused public panic and disturbed social order.     The acts violated China's Criminal Law and should be harshly punished accordingly, Wang told reporters.     A court in Urumqi said three Uygurs were given jail terms ranging from seven to 15 years Saturday over syringe stabbings or threatening to use needle attacks for robbery.     Wang added that more police and armed police forces would patrol on the city's streets and those who offer tip-offs for needle attackers would receive rewards.     He also urged the attackers to surrender to the police, saying those who surrender or report others' crimes could receive lighter punishment.

BEIJING, Oct. 14 (Xinhua) -- China on Wednesday proposed closer cooperation among members of a regional security group to tackle the world economic recession.     "Confronted with the global financial crisis and aiming at a steady economic growth, member states of Shanghai Cooperation Organization (SCO) should work together and seek mutual benefit," Chinese Vice Premier Li Keqiang told a SCO business forum in Beijing.     The SCO was founded in 2001 to enhance security cooperation among its six member states, namely, China, Russia, Uzbekistan, Tajikistan, Kyrgyzstan and Kazakhstan. Mongolia, India, Iran and Pakistan are observers to the regional group. Chinese Vice Premier Li Keqiang attends a business forum of Shanghai Cooperation Organization (SCO) in Beijing, capital of China, Oct. 14, 2009    "Despite the world financial crisis, the trade volume between China and some SCO member states has been growing over the past year," Li said.     "The crisis didn't shake up the foundation for SCO states' cooperation. Instead, it offered more opportunities for them to work together," Li said, citing the fact that SCO members are complementary in economies and have an increasingly-connected market.     Although the total population and territories of SCO member states amounted to a quarter and one fifth of the world's total, their overall economic scale and trade volume made up only the world's 11 percent or 10 percent respectively, Li said.     "Thus, there is a huge potential for SCO member states to expand economic and technology cooperation," Li said.     He called for SCO member states to carry out the joint actions to deal with the global slump and accelerate the process of trade and investment liberalization.     He proposed promoting the projects that involved and benefited multiple parties, building infrastructure networks of transportation, communications and energy.     It was necessary to step up cooperation in modern agriculture, emerging industries, high-tech and social welfare so as to benefit the people, Li said.     He vowed that China will unswervingly pursue the path of peaceful development, take a more active part in SCO affairs, fully participate in regional economic and regional cooperation in a bid to work for the welfare of 1.5 billion people within the SCO member states.     The business forum was an important event under the framework of the eighth SCO prime ministers' meeting, which took place on Wednesday.

NEW YORK, Sept. 22 (Xinhua) -- Chinese President Hu Jintao met his U.S. counterpart Barack Obama here on Tuesday to exchange views on bilateral ties and other important issues of common concern.     The Chinese president said at the start of their meeting that China-U.S. relations are now showing a sound momentum of development, and the two countries are developing a positive, cooperative and comprehensive relationship.     A sound China-U.S. relationship is not only in the interests of the two countries, but also conducive to peace, stability and prosperity in the Asia Pacific region and the world at large, Hu said. Chinese President Hu Jintao (R) meets his U.S. counterpart Barack Obama in New York, the United States, Sept. 22, 2009    Hu expressed the willingness to work with the U.S. side to deepen cooperation in various fields. He hoped both sides would properly handle problems in bilateral ties so as to push forward the relations.     Obama said he is committed to building a genuine, cooperative and comprehensive relationship between the two countries. He expressed the willingness to further advance the cooperative relations. Chinese President Hu Jintao (R) meets his U.S. counterpart Barack Obama in New York, the United States, Sept. 22, 2009. The two leaders were meeting on the sidelines of the UN climate change summit and other UN meetings. This has been their second meeting this year since April 1 when they met in London during a Group of 20 summit on the global financial crisis.     During their London meeting, Hu and Obama agreed to work together to build a positive, cooperative and comprehensive relationship in the 21st century.     Since Obama took office in January 2009, China-U.S. relations have achieved a smooth transition and maintained a positive momentum of growth.     The first China-U.S. Strategic and Economic Dialogue was held in Washington in late July, when the two countries pledged to intensify bilateral ties and expand cooperation on major international issues and shared global challenges.