郑州受精与初期胚胎发育过程模型(防城港男性人体躯干矢状断层解剖模型) (今日更新中)

HONG KONG, Oct. 13 (Xinhua) -- Computer and electronic device maker Lenovo, listed in both Hong Kong and New York, has replaced Dell to become the world's second largest personal computer company, Lenovo said Thursday.Lenovo made the remarks in a statement, citing figures released by International Data Corporation (IDC), a global provider of business intelligence for the consumer technology market.Following five quarters as the fastest-growing PC maker among the world's top vendors, the preliminary IDC data reported that Lenovo has achieved record market share of around 13.7 percent and record quarterly shipment volume of some 12.6 million units.Lenovo CEO Yang Yuanqing said his company had surpassed two competitors to capture the No. 2 spot in worldwide PCs in just two quarters and it was the highest rank that Lenovo has achieved in worldwide PC sales.Given current competitive environment, the new achievement positioned Lenovo as a strong challenger to ultimately become the global market leader, Yang said in the statement."We are growing in the enterprise and the consumer space. And our customers know we are fully committed to the PC market for the long term," he said.At the same time, the Chinese multinational would continue investing in innovative products that would help drive the convergence of technologies and services across all four screens -- smart phones, tablets, PCs and smart TV, Yang said."We must deliver a great user experience across all platforms to achieve our goal and become the leading personal technology company in the world."Lenovo is a personal technology company and a global Fortune 500 company with annual sales worth 21 billion U.S. dollars. It serves customers in more than 160 countries and regions.

BEIJING, Jan. 20 (Xinhua) -- China will regulate the production and sale of cosmetic colored contact lenses by including them in its list of items classified as "medical apparatus."Some people wear such non-corrective colored contacts to change or enhance eye color for cosmetic and fashion purposes.As these contacts are not for vision correction and medication purposes, they are currently off limits to the country's medical administration and regulators, said a statement published on the website of the State Food and Drug Administration on Thursday.However, with the increasingly popular use of cosmetic contacts, safety and quality problems due to the regulation loophole are likely to harm consumers' health, and the administration has decided to expand the current medical regulation on contact lenses to cover cosmetic ones, the statement said.It explained that the administration will soon issue a notice to ban the manufacture and sale of these contacts without proper registration and licenses.The statement also warned consumers of the risks of these contacts and suggested they carefully choose and use such products.

WASHINGTON, Oct. 3 (Xinhua) -- Researchers at St. Michael's Hospital in Canada have discovered a new function for an enzyme that may protect against organ injury and death from anemia, according to a study appearing Monday in the U.S. journal of the Proceeding of the National Academy of Sciences.Researchers found that when people have anemia, neuronal nitric oxide synthase (nNOS) -- an enzyme in nerve cells that produces nitric oxide, an important signaling molecule in the body -- increases the body's ability to respond, adapt to low oxygen levels and makes the body more efficient in delivering oxygen to tissues. They also found that levels of nNOS in the brain increased in anemic mice, and that the mice without this enzyme die earlier, and with higher hemoglobin levels."Identifying this mechanism may lead to new therapies and approaches to improving outcomes for anemic patients," said Dr. Greg Hare, a researcher at the Li Ka Shing Knowledge Institute of the hospital and one of the lead investigators of the study.Anemia occurs when blood has a lower than normal number of red blood cells or hemoglobin -- an iron-rich protein that carries oxygen from the lungs and heart to the rest of the body. Cells need oxygen to survive and to produce energy for all bodily functions. The condition has many different causes including infection (malaria, HIV, parasites), nutritional deficiencies (iron, folate, B12), genetic mutations, pregnancy, trauma and surgical blood loss."This research will help us identify when an anemic patient is at greatest risk for injury and death when undergoing surgery," said Hare. "Research is underway to test these findings in humans."

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.

ATHENS, Nov. 11 (Xinhua) -- The third Forum on the Development of Tibet concluded here on Friday after discussions on efforts to promote the world's understanding of Tibet and enhance the cooperation between China and the rest of the world with regards to Tibet's development.This year marks the 60th anniversary of Tibet's peaceful liberation. During the two-day event, delegates from Greece, Britain, France, Germany, India and Nepal expressed their opinions on Tibet's modernization and put forward valuable advice and suggestions based on their own experience and research findings.Some of the foreign delegates have visited Tibet many times before. Narasimhan Ram, Editor-in-chief of The Hindu from India and Brendan O'Neill, editor of the British magazine Spiked spoke positively about the preferential polices and financial support of the Chinese central government and other parts of China for the region.During the Forum, Wang Chen, head of the Chinese State Council Information Office met with the Greek political leaders and journalists from mainstream media.People got an opportunity to learn more about China as Nyima Tsering, Vice Chairman of the Standing Committee of the People's Congress of the Tibet Autonomous Region, introduced the development of Tibet and the Chinese government's policy towards the region.A number of Greek mainstream media covered the Forum.Over the past 60 years, Tibet has achieved a huge development in both its social structure and socio-economic development, said a communique released upon the end of the forum.It also foresees a great potential of cooperation with the international community in energy, environment, education and healthcare development for the region.The forum has facilitated better understanding of Tibet in the international community and will help to promote faster and better development of the autonomous region, the Communique said.

来源：资阳报