昌吉一个多月没来月经是什么原因(昌吉意外怀孕多少天能做人流) (今日更新中)

BEIJING, Oct. 13 (Xinhuanet) -- Scientists have decoded the genome of Black Death which caused one of the worst plagues in human history.The finding was published Wednesday in the scientific journal Nature.A team of German, Canadian and American scientists collected the bacteria's DNA from ancient plague victims' teeth and bones, which were excavated from the burial ground in London.With a careful NDA comparison between the ancient bacteria and the modern strains, scientists found the direct variant of the medieval bacteria still exist today.Black Death's descendants kill around 2,000 people a year, mostly in the developing world, the scientist said."This will provide us with direct insights into the evolution of human pathogens and historical pandemics," said Johannes Krause Of Germany's University of Tubingen, who worked on the study.Black Death, the fatal plague of medieval Europe, wiped out some 30 million people -- about 50 percent of the population on the continent, within just five years, between 1347 and 1351.

TEL AVIV, Jan. 25 (Xinhua) -- Israeli Prime Minister Benjamin Netanyahu on Tuesday praised the relations between Israel and China at a reception celebrating the 20th anniversary of the establishment of diplomatic ties between the two countries."We may be celebrating 20 years of relations, but our peoples are now celebrating a thousand years of friendship," Netanyahu said.He mentioned China's fair treatment towards the Jewish communities in the past, and the safe-haven given to them during the holocaust. "Like the Chinese people, the Jewish people have a long memory. We always remember our friends. We always remember people who extended a hand to us in our darkest days and we are grateful for China for that."Israli Prime Minister Benjamin Netanyahu (R) speaks at a reception celebrating the 20th anniversary of the establishment of diplomatic ties between China and Israel in Tel Aviv on Jan. 24, 2012.The prime minister said that the friendship between the two sides can further deepen. "I think we barely scratched the surface of Israeli-Chinese relations. I have no doubt that in the coming years we'll see a dramatic expansion of these ties," he said."We've talked about doubling the trade (between the two countries). Well, I'd like to see a doubling of a doubling of the trade. I think Israel and China together are a winning combination, " Netanyahu said.In addition to the prime minister, several other senior Israeli officials attended the reception, among them ministers, former ambassadors and envoys to China and key figures in the bilateral ties.Chinese ambassador Gao Yanping said that "Over the past 20 years our pragmatic cooperation has been booming. When we started our diplomatic relations in 1992, our two-way trade volume was only a little bit more than 50 million U.S. dollars. Now the trade volume we have in two days equals that of the whole year of 1992."She said that "The further development of China-Israel relations is not only beneficial to both countries and the two peoples, but also very much conductive to regional stability, world peace and global prosperity.""Facing the ongoing major transformation and adjustment in the region and in the world, the China-Israel relationship is now at a new historical point. We should continue to work together, grow together and succeed together in the years to come," Gao added.

BEIJING, Oct. 26 (Xinhuanet) -- The question, why the first documented supernova was super-sized and grew so fast, has puzzled astronomers for centuries. Now it is solved by US researchers.The supernova, an exploded star, was observed in 185 A.D. and documented as a mysterious "guest star" by Chinese astronomers. It was visible for eight months.Scientists later found the supernova, 8,000 light years away, was a bigger-than-expected supernova remnant. BBC reported that if the infrared light it emits could be seen by human eyes, it would appear to be as large as the full Moon in the sky.Through observations in space telescopes, researchers of a latest study revealed that the explosion took place in a cavity in space, which allowed the star's remains to travel out much faster and farther. The study was published online in the Astrophysical Journal Monday.The supernova was "two to three times bigger than we would expect for a supernova that was witnessed exploding nearly 2,000 years ago. Now, we've been able to finally pinpoint the cause," stated Brian Williams, lead author of the study and an astronomer at North Carolina State University in Raleigh.

BRUSSELS, Nov. 7 (Xinhua) -- China and Europe should strive to strengthen their cooperation for a win-win outcome in this era of profound changes, said a senior Chinese official here on Monday.Liu Yunshan, a member of the Political Bureau of the Communist Party of China (CPC) Central Committee, made the remarks during his keynote speech at the opening ceremony of the China-Europe High-Level Political Party Forum.Chinese President Hu Jintao has expressed a readiness to work for world economic recovery and strong, balanced and sustainable growth at the G20 summit in Cannes, France last week, said Liu, who is also head of the Publicity Department of the CPC.Liu Yunshan(Front, 3rd,R), a member of the Political Bureau of the Communist Party of China (CPC) Central Committee, attends the opening ceremony of the China-Europe High-Level Political Party Forum in Brussels on Nov. 7, 2011. The forum kicked off in Brussels on Monday.The forum would carry on with discussions on the new possibility and new measures of cooperation between China and Europe, which would add new spurs to their relations, said the Chinese official.Liu called for more cooperation for a win-win result and mutual respect for cultural differences between China and Europe, as well as a common effort to build an inclusive and open international system to face up to global challenges.Noting that China and Europe are stepping into a new stage of development for their ties, Liu expressed hopes that both sides further enhance their strategic mutual trust, "respect each other's core interest and major concerns and observe each other's development from a more objective perspective."Efforts should be made to promote their cooperation in trade, finance, environment protection, high-tech and new energy, and China and Europe should also work to cultivate new growth possibilities for their economic and trade cooperation, he said.They should in the meanwhile expand people-to-people exchanges and take the chance of their intercultural dialogue year in 2012 to build on their friendship, he added.Leaders from the European political parties said the forum offered chance for a key high-level dialogue for the political parties in China and Europe, which would play an active role for the exchanges and comprehensive development of the relations between both sides.

WASHINGTON, Jan. 16 (Xinhua) -- A new study examining weather patterns around the worldwide pandemics of influenza, which caused widespread death and illness in 1918, 1957, 1968 and 2009, finds that each of them was preceded by La Nina conditions in the equatorial Pacific. The study findings are published online Monday in the Proceedings of the National Academy of Science.The study's authors -- Jeffrey Shaman of Columbia University's Mailman School of Public Health and Marc Lipsitch of the Harvard School of Public Health -- note that the La Nina pattern is known to alter the migratory patterns of birds, which are thought to be a primary reservoir of human influenza. The scientists theorize that altered migration patterns promote the development of dangerous new strains of influenza.To examine the relationship between weather patterns and influenza pandemics, the researchers studied records of ocean temperatures in the equatorial Pacific in the fall and winter before the four most recent flu pandemics emerged. They found that all four pandemics were preceded by below-normal sea surface temperatures -- consistent with the La Nina phase of the El Nino- Southern Oscillation.The authors cite other research showing that the La Nina pattern alters the migration, stopover time, fitness and interspecies mixing of migratory birds. These conditions could favor the kind of gene swapping or genetic reassortment that creates novel and therefore potentially more variations of the influenza virus."We know that pandemics arise from dramatic changes in the influenza genome. Our hypothesis is that La Nina sets the stage for these changes by reshuffling the mixing patterns of migratory birds, which are a major reservoir for influenza," says Shaman.Changes in migration not only alter the pattern of contact among bird species, they could also change the ways that birds come into contact with domestic animals like pigs. Gene-swapping between avian and pig influenza viruses was a factor in the 2009 swine flu pandemic.

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