上海4mm的肺结节要治疗吗(上海肺结节灶什么意思) (今日更新中)

CHANGSHA/HARBIN, Feb. 12 (Xinhua) -- As Chinese people are embracing the arrival of the Year of Tiger on Saturday, zoologists are worried about the survival of South China Tigers as the endangered species are facing a serious problem of inbreeding.No traces of the tigers have been found in the last decade, they said.The number of captive South China tigers (Panthera tigris amoyenesis) rose to 92 in 2009 from 60 in 2007 but all the tigers were the offsprings of six wild South China tigers which were caught more than 40 years ago, said Deng Xuejian, a professor with the Department of Biology of Hunan Normal University, based in Changsha, capital of central China's Hunan Province."The inbreeding may lead to genetic freaks, low survival rates and poor physical makeup," Deng said.All the genes have come from two male and four female tigers, which had lead to highly identical genes in the offspring, Deng said."The situation may reduce the genetic diversity and cause degradation or even the extinction of the species," he said.The tigers would lose genetic diversity if their genes were too similar, said Ma Zaiyu, president of veterinary hospital of Changsha Zoo."The number of the members of a species should be at least 1,000 to maintain the stability of the species," Ma said.Zoologists estimated the number of wild South China tigers could have been less than 30 in the 1990s. The remaining wild tigers are presumed to live in the remote areas of Guangdong, Hunan, Fujian and Jiangxi provinces, Deng Xuejian said.Based on analysis of relevant date combining field investigation, Deng estimated the number of wild South China tigers could be less than 10.No traces of wild South China tigers were reported in Hunan in the last two years, said Zhou Shuhuai, director of wildlife protection section of the Hunan provincial forestry bureau."The number is limited and the tigers scatter in different areas, which make it difficult for natural breeding between wild tigers," said Huang Gongqing, a tiger expert at South China Tiger Breeding Base in Suzhou, a city of east China's Jiangsu Province."The extinction of the wild tigers will happen sooner or later," Huang warned.Some experts have said that there may be already no wild South China tigers. "However, we cannot know as the animal is very difficult to trace," Deng said.Ma Zaiyu said to avoid extinction of the species, more captive tigers should be bred, and some genes might be recovered when the population reaches 1,000, while Deng suggested continuous search for wild tigers to enrich the captive tigers' genes.The situation is much better for the Siberian tigers (panthera tigris altaica) in northeast China as the number of the wild ones is quite stable, experts said.The number maintains at around 20 in China, among which 10 to 14 are in Heilongjiang Province and eight to ten are in Jilin Province, said Sun Haiyi, deputy director of Heilongjiang Wildlife Institute"But no more young tigers under one year old have been discovered in the past two years. The reason might be the number of female tigers are less than the males and the animals are relatively isolated by the mountains," Sun said.China established a breeding base for the Siberian tigers in Heilongjiang in 1986 and the number of captive tigers has increased from eight to current more than 800, Sun said.Experts called for more efforts to protect the habitats of the tigers for the purpose of protection and re-wilding of the tigers.

BEIJING, Feb. 9 (Xinhua) -- Following several reports of melamine-tainted milk products resurfacing, Chinese Vice Premier Li Keqiang on Tuesday vowed a new nationwide campaign in 2010 to ensure food safety."Food is essential, and safety should be a top priority for food. Food safety is closely related to people's life and health and economic development and social harmony," Li said at the first plenary meeting of the recently-established food safety commission under the State Council.According to Li, this year's campaign will focus on the prominent issues of food additives, edible farm products, food production processing, food circulation and import and export, livestock slaughter, the catering industry and health supplements industry, among others."We should understand the foundation for the country's food safety is still weak and the situation is grave," Li said. "We should fully realize that it is a pressing issue to ensure food safety." Chinese Vice Premier Li Keqiang(C) attends the first plenary session of the food safety commission in Beijing, capital of China, Feb. 9, 2010Media reports said melamine-tainted dairy products have resurfaced in several Chinese provinces, proof that the toxic milk powder recalled in 2008 was not destroyed and has been used.Melamine is an industrial compound which can give a false positive on protein tests and cause kidney stones. Melamine-contaminated milk products killed at least six children in 2008 and sickened 300,000.Li stressed responsibility of food producers and vendors while calling on various government departments to strengthen supervision and guidance of these companies.He urged improvement in food safety standards and the food system production check-ups, risk evaluation, accident prevention and emergency response.Li vowed to "thoroughly" investigate the latest milk scandal, destroy all tainted products and severely punish those responsible.Two managers from a dairy company and a milk powder dealer in northwestern Shaanxi Province were arrested on charges of manufacturing and selling food that does not meet hygiene standards, local police said earlier this month.Li urged the strengthening of law enforcement by increasing the frequency of inspection and expanding the supervision to clear up potential troubles and ensure people spend a happy and peaceful Lunar New Year, which falls on Feb. 14 this year.

BEIJING, Feb. 23 (Xinhua) -- China's Ministry of Public Security Tuesday urged police nationwide to take initiatives in cracking serious crime cases and solving social conflicts to ensure a safe World Expo in Shanghai.Vice Minister Huang Ming said police should seriously crack down on illegal activities, including illegal use of guns and explosives, kidnapping of children and women, gang-related crimes and online pornography.Police in Shanghai and its neighboring regions were asked to reinforce security measures and increase street patrols, and mobilize local residents to ensure a safe environment for the upcoming World Expo.Huang said the police should learn from Beijing's experience of successfully safeguarding the 2008 Beijing Olympic Games and the celebrations for the 60th anniversary of the founding of the People's Republic of China in 2009.Police were also asked to visit grassroot level communities and villages to find prominent problems and help relevant authorities settle disputes.Shanghai's neighboring provinces, Jiangsu, Zhejiang, Anhui, Jiangxi, Fujian, Shandong, Henan and Hubei, would reinforce security checks in air flights and trains, Huang said.Huang also urged the police to enforce the law in a reasonable and civilized manner and minimize disturbances to the public.The World Expo, to be hosted by China for the first time, will run from May 1 to Oct. 31. To date, at least 192 countries and 50 international organizations have confirmed their participation in the event that will present the latest advances of architecture and engineering worldwide.

BEIJING, Jan. 12 (Xinhua) -- China's National Marine Forecasting Station on Tuesday issued an alarm on sea ice as it was developing fast off the country's eastern coast.     In the following week, the floating chunks of ice could extend up to 90 nautical miles off the coast of Baohai Sea and 25 nautical miles in the northern Yellow Sea. The ice thickness could measure up to 40 cm, the station said.     The station warned of threats to port infrastructure, transportation and maritime operations. Fishing boats are seen trapped by sea ice in Laizhou Bay, east China's Shandong Province, Jan. 12, 2010. The most severe icing situation in the past 30 years in the coast off Shandong Province continued to worsen amid cold snaps. Sea ice appeared last week along the coastline of the Bohai Sea and northern Yellow Sea as cold fronts pushed the temperature down to minus 10 degrees Celsius    The worst sea ice in the past 30 years appeared from early Jan. along the coastline of the Bohai Sea and northern Yellow Sea as cold fronts pushed the temperature down to minus 10 degrees Celsius and below.     Sea ice in the Liaodong Bay nearly doubled to 71 nautical miles Tuesday from 38 nautical miles on December 31.     With another cold front expected this week, the sea ice along the coastline would further develop, the station said.

BEIJING, Jan. 19 (Xinhua) -- Premier Wen Jiabao said Tuesday the acceleration of the adjustment of China's development pattern while maintaining steady and fast economic growth must run through all the government's work this year.The government should incorporate speeding up the transformation of the development mode into maintaining steady and relatively fast economic development, Wen said at a plenary meeting of the State Council, or Cabinet.At the meeting, a draft government work report, to be delivered at an annual national session of the country's parliament, was discussed.Chinese Premier Wen Jiabao presides over a plenary meeting of the State Council to discuss the draft of the government work report to be delivered at a national session of the country's parliament in Beijing, capital of China, Jan. 19, 2010The government must strengthen macro-economic control and carefully handle the relationship between maintaining steady and relatively fast economic development, adjusting economic structure and managing inflation expectations in a bid to create favorable conditions to transform the development mode, he said.The government would stick to the policy of expanding domestic demand this year to boost public consumption and optimize the investment structure, he said.Wen said the country should make "substantial progress" in transforming the economic development mode by continuing to push forward renovation of key industries, fostering strategic emerging industries, promoting accelerated development of the service sector, and improving the overall quality and competitiveness of the national economy.Chinese Premier Wen Jiabao (3rd L) presides over a plenary meeting of the State Council to discuss the draft of the government work report to be delivered at a national session of the country's parliament in Beijing, capital of China, Jan. 19, 2010The government would comprehensively implement its strategy of reinvigorating the country through science, education and expertise, and enhance its efforts to turn China into an innovation-oriented country so as to give technological and personnel support for the transformation of the development mode, he said.The government should also make efforts to improve the people's living standards and deepen reforms of "key fields" to establish a system which was conducive to the transformation, he said.At the meeting, Wen also outlined key work to be done in the first quarter of this year, a period which he said was crucial for China's economic and social development this year.He said the government must correctly judge the situation and make its macro-economic control policy more effective.He also urged the government to optimize credit structure and maintain a good rhythm of credit supply to guard against financial risks.A key task in adjusting the economic operation was to ease the supply and demand imbalance of electricity, coal, gas and transportation, he said.He urged relevant authorities to lose no time to implement policies already introduced, "increase commercial residential building supply", and "contain speculative purchases of homes" to promote steady and healthy development of the real estate market.Wen also called for enhanced efforts to ensure work safety and maintain social stability.The participants of the meeting agreed to issue the draft government work report to central and local government organs to solicit opinions.

来源：资阳报