银川人胚植入过程及胎膜发生模型(福建门静脉及其侧支循环模型) (今日更新中)

New York, Sept. 23 (Xinhua) -- A Chinese scientist was presented a prestigious U.S. award on Friday for the discovery of artemisinin, a drug therapy for malaria that has saved millions of lives across the globe, especially in the developing world.Pharmacologist Tu Youyou, 81, became the first scientist on the Chinese mainland to win Lasker Award, known as "America's Nobels" for their knack of gaining future recognition by the Nobel committee.Tu, a scientist at the China Academy of Chinese Medical Sciences in Beijing, pioneered a new approach to malaria treatment that has benefited hundreds of millions of people and promises to benefit many times more. By applying modern techniques and rigor to a heritage provided by 5000 years of Chinese traditional practitioners, she has delivered its riches into the 21st century."Not often in the history of clinical medicine can we celebrate a discovery that has eased the pain and distress of hundreds of millions of people and saved the lives of countless numbers of people, particularly children, in over 100 countries," Lucy Shapiro, a member of the award jury and professor of Stanford University, said while describing Tu' s discovery.Shapiro said the discovery, chemical identification, and validation of artemisinin, a highly effective anti-malarial drug, is largely due to the "scientific insight, vision and dogged determination" of Professor Tu and her team. She thought Professor Tu's work has provided the world with arguably the most important pharmaceutical intervention in the last half century."The discovery of artemisinin is a gift to mankind from traditional Chinese medicine," Tu said while receiving the award. "Continuous exploration and development of traditional medicine will, without doubt, bring more medicines to the world."

WASHINGTON, June 2 (Xinhua) -- When humans see red, their reactions become both faster and more forceful, according to a new study published this week in the U.S. bimonthly journal Emotion.The findings may have applications for sporting and other activities in which a brief burst of strength and speed is needed, such as weightlifting. But the authors caution that the color energy boost is likely short-lived.The study measured the reactions of students in two experiments. In the first, 30 fourth-through-10th graders pinched and held open a metal clasp. Right before doing so, they read aloud their participant number written in either red or gray crayon. In the second experiment, 46 undergraduates squeezed a handgrip with their dominant hand as hard as possible when they read the word "squeeze" on a computer monitor. The word appeared on a red, blue, or gray background.In both scenarios, red significantly increased the force exerted, with participants in the red condition squeezing with greater maximum force than those in the gray or blue conditions. In the handgrip experiment, not only the amount of force, but also the immediacy of the reaction increased when red was present.The colors in the study were precisely equated in hue, brightness, and chroma (intensity) to insure that reactions were not attributable to these other qualities of color."Red enhances our physical reactions because it is seen as a danger cue," explains coauthor Andrew Elliot, professor of psychology at the University of Rochester and a lead researcher in the field of color psychology. "Humans flush when they are angry or preparing for attack," he explains. "People are acutely aware of such reddening in others and it's implications."But threat is a double-edged sword, argue Elliot and coauthor Henk Aarts, professor of psychology at Utrecht University, in the Netherlands. Along with mobilizing extra energy, "threat also evokes worry, task distraction, and self-preoccupation, all of which have been shown to tax mental resources," they write in the paper.In earlier color research, exposure to red has proven counterproductive for skilled motor and mental tasks: athletes competing against an opponent wearing red are more likely to lose and students exposed to red before a test perform worse.

BUJUMBURA, May 31(Xinhua) -- As the World No Tobacco Day is celebrated on Tuesday, many Burundians feel happy that they have given up smoking thanks to herbal drugs.Evariste Ndikumwami, 55, residing in the Burundian capital Bujumbura, said he had been smoking for 30 years, but gave up smoking in January after taking herbal drugs prescribed by an abbot."I had been smoking since my teenage and I gave up smoking in January (this year) after I took herbal drugs that I got from a Roman Catholic priest from Uganda working at Rugari parish in the province of Muyinga, some 210 km northeast of the Burundian capital Bujumbura," Ndikumwami told Xinhua.Ndikumwami said he used to smoke a pack of 20 cigarettes per day, adding that he had found it hard to give up smoking.He said, "I took the herbal drugs for 15 days. The abbot prescribed me two herbal drugs -- one to be smoked for five days at daytime when I desire to smoke and another one to be applied around the nostrils at night."After the medication period, he never felt the desire for smoking cigarettes, he said."When my friends realized I was no longer smoking, they asked me which drugs I took to give up smoking. I directed them to the abbot who had healed me and they also got cured and stopped smoking," Ndikumwami said.

BEIJING, Aug. 25 (Xinhua) -- China pledged on Thursday to make more efforts to aid people living in the drought-stricken Horn of Africa in collaboration with the International Committee for the Red Cross (ICRC)."We noticed that the ICRC launched an appeal regarding the situation in the Horn of Africa. The Red Cross Society of China (RCSC) has decided to donate 4 million yuan (about 623,000 U.S. dollars) to the ICRC for its humanitarian aid in the region," said Hua Jianmin, president of the RCSC, while meeting with visiting ICRC President Jakob Kellenberger in Beijing on Thursday.Earlier this month, the RCSC donated 8 million yuan (1.25 million dollars) to famine-plagued countries in the Horn of Africa to be used for emergency humanitarian aid.A donation of 2 million yuan was sent to Kenya through the country's Red Cross organization, while another 2 million went to Ethiopia. The other 4 million yuan was donated to other countries in the region.The Chinese government has decided to provide a total of 90 million yuan (14 million dollars) in emergency food assistance to countries in the Horn of Africa."The Red Cross Society of China is willing to work together with the International Committee for the Red Cross to meet the needs of those who have been affected (by the droughts)," Hua said.Some 12.4 million people in Kenya, Ethiopia, Somalia and other countries in the region are in dire need of food due to a serious drought, the worst to hit the region since the 1980s.

BEIJING, June 21 (Xinhua) -- China will launch a new icebreaker for use during an upcoming 2013 polar expedition, a senior oceanic official said on Tuesday.Both the new icebreaker and Xuelong ("Snow Dragon"), an icebreaker that operated in Antarctica, will form an Arctic-Antarctic maritime research team."China will have at least two icebreakers concurrently operating at both the north and south poles," Chen Lianzeng, deputy director of the State Oceanic Administration, told a national conference on polar research, which has been the first since 1984 when the country started expeditions in polar regions.The new icebreaker will boast facilities that will allow it to research the oceanic environment, integrate data for real-time oceanic monitoring, deploy and retrieve detectors and conduct aerial studies using helicopters, Chen said.The two icebreakers will conduct expeditions in polar regions for more than 200 days annually, he said.Fixed-wing aircraft will also be added to the expedition team before 2015, allowing researchers to be transported between China's Zhongshan and Kunlun research stations and Antarctica's Grove Mountains.The Kunlun station went into operation in early 2009 as the first Chinese research station on Antarctica's inland. The Zhongshan station, established in 1989, now serves as a supply base for the Kunlun station.A written comment by Vice Premier Li Keqiang sent to the conference said the polar research, a magnificent feat of the mankind, has great significance for China's oceanic work and sustainable development."Over the past two decades, China's polar research made great achievements and became influential globally," Li said.Li encouraged Chinese scientists to actively participate in international exchanges and cooperation, safeguard national interests and contribute to the peaceful use of polar regions.Since the early 1980s, China has sent 27 Antarctic expedition teams and completed four research missions to the Arctic Ocean.Besides the Xuelong icebreaker, China has built three Antarctic stations -- Changcheng (Great Wall), Zhongshan and Kunlun -- and one Arctic station -- Huanghe (Yellow River) Station.

来源：资阳报