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BEIJING, March 7 (Xinhua) -- The Chinese currency Renminbi (RMB), or the yuan, on Monday strengthened to an all-time high of 6.5651 per U.S. dollar, according to the China Foreign Exchange Trading System.Monday's central parity rate of the RMB against U.S. dollar was 20 basis points lower than the previous record of 6.5671 set on last Friday.The yuan has appreciated 3.84 percent since June 19 last year when the People's Bank of China, the central bank, announced it would further reform the exchange rate formation mechanism to improve its flexibility.On China's foreign exchange spot market, the yuan can rise or fall 0.5 percent from the central parity rate each trading day.The central parity rate of the RMB against the U.S. dollar is based on a weighted average of prices before the opening of the market for each business day.

BEIJING, April 12 (Xinhuanet) -- The elderly have a difficult time with multi-tasking as a study suggests that older brains behave differently when it comes to switching between two tasks, according to media reports on Tuesday.Researchers used functional magnetic resonance imaging (FMRI) to analyze brain activity in 20 people over age 60 by asking them to contemplate outdoor photos shown briefly. Then the elderly were presented with the picture of a face and asked to determine its gender and age, before being asked to recall details from the original scene they viewed.Researchers then compared their results to a similar experiment with 20 younger adults and found the brains of older subjects were less capable of disengaging from the interruption and reestablishing the neural connections necessary to switch back to focusing on the original memory."Unlike younger individuals, older adults failed to both disengage from the interruption and re-establish functional connections associated with the disrupted memory network," write Wesley C. Clapp of the University of California, San Francisco, and colleagues in the Proceedings of the National Academy of Sciences.The study, published in the online edition of the journal Proceedings of the National Academy of Sciences, sheds new lights into a growing body of studies showing that one's ability to move from one task to another in quick succession becomes more difficult with age.

ADDIS ABABA, Jan. 28 (Xinhua) -- Fruitful results have been achieved some one year after the fourth ministerial meeting of the Forum on China-Africa Cooperation (FOCAC), Chinese envoy and Assistant Foreign Minister Liu Zhenmin told Xinhua here on Friday.Liu was in the Ethiopian capital Addis Ababa to attend the 16th African Union (AU) summit as special envoy of the Chinese government.During the FOCAC ministerial meeting held in November 2009 in Sharm el-Sheikh, Egypt, the Chinese government announced eight new measures of promoting Sino-African cooperation.Since then, China has been actively implementing various programs and projects according to the eight new measures, Liu said.The “China-Africa Science and Technology Partnership Program” and the “China-Africa Joint Research and Exchange Program” have been launched, Liu said, adding that the aid program of agricultural demonstration center is in smooth implementation process.Meanwhile, China is actively working on establishing the China-Africa partnership in addressing climate change, and is strengthening communication and coordination with Africa on the issue of climate change, Liu said.The Chinese envoy added that various programs and events such as the China-Africa Agricultural Cooperation Forum, the “African Culture in Focus 2010” activities, and the “20+20 Cooperation Plan of Chinese and African Institutions of Higher Learning” have been launched or successfully held. He said these events have promoted the comprehensive development of China-Africa relations.A wide range of other measures are also being carried out in an active manner, according to Liu.The year 2011 is key to the implementation of the measures announced on the fourth ministerial meeting of FOCAC, Liu stressed.To this end, China will continue strengthening communication and coordination with African countries, carrying out close cooperation and pushing forward the development of the China-Africa new strategic partnership, he pledged.

WASHINGTON, March 22 (Xinhua) -- A long-term study by Greek researchers has shown the effectiveness of replacing bone marrow, purposely destroyed by chemotherapy, with autologous (self) stem cells in treating people with aggressive forms of multiple sclerosis (MS).The study was published on Tuesday in Neurology, the medical journal of the American Academy of Neurology.For the treatment, chemotherapy drugs are used to kill all of the patient's blood cells, including the immune cells that are believed to be attacking the body's own central nervous system. Bone marrow stem cells removed from the patient are purified and transplanted back into the body, which saves life by replacing the blood cells and also is proposed to "reboot" the immune system.A human embryonic stem cell line derived at Stanford University is seen in this handout photo released to Reuters by the California Institute for Regenerative Medicine, March 9, 2009The study followed 35 people for an average of 11 years after transplant. The study involved people with rapidly progressive MS who had tried a number of other treatments for MS with little or no effect. All were severely disabled by the disease, with an average score of six on a scale of disease activity that ranges from zero being a normal neurological examination to 10 meaning death due to MS.A score of six means able to walk with a cane or crutch; a seven is mainly in a wheelchair. All had worsened by at least one point on the scale in the year prior to the transplant.After the transplants, the probability of participants having no worsening of their disease for 15 years was 25 percent. The probability was higher -- 44 percent -- for those who had active brain lesions, which are a sign of disease activity, at the time of the transplant.For 16 people, symptoms improved by an average of one point on the scale after the transplant, and the improvements lasted for an average of two years. The participants also had a reduction in the number and size of lesions in their brains. Two people (six percent) died from complications related to the transplant at two months and 2-1/2 years post-transplant.Study author Vasilios Kimiskidis, of Aristotle University in Thessaloniki, Greece, noted that more research is needed on this treatment, including studies that compare people receiving the treatment to a control group that does not receive the treatment."Keeping that in mind, our feeling is that stem cell transplants may benefit people with rapidly progressive MS," he said. "This is not a therapy for the general population of people with MS but should be reserved for aggressive cases that are still in the inflammatory phase of the disease."

BEIJING, Jan. 23 (Xinhua) -- Chinese President Hu Jintao's state visit to the United States, during which he reached important consensus with U.S. President Barack Obama on building a cooperative China-U.S. partnership based on mutual respect and mutual benefit, has been closely followed by world media.The visit has drawn "unprecedented" world attention, said Gu Xuewu, director of the Center for Global Studies at the University of Bonn.NEW CHAPTER IN DEVELOPMENT OF CHINA-U.S. TIESCommenting on Hu's visit, which occurred at the beginning of the second decade of the 21st century, Professor Severino Cabral, director of Brazil's China and Asia-Pacific Research Institute, said the visit opened a new epoch for China-U.S. relations.The resumption of dialogue between the world's two major economies, which itself is a significant event, would exert great influence on the new world agenda, and hopefully help eliminate the residual cold war mentality and take bilateral relations to a new era, he said.Chen Kang, professor at Lee Kuan Yew School of Public Policy at the National University of Singapore, said that the joint statement issued by the two sides during Hu's stay -- built upon bilateral efforts to establish a cooperative partnership based on mutual respect and mutual benefit -- is a clear reflection of the two countries' resolution and pragmatic attitude in jointly meeting global challenges.China Press USA, a New York-based Chinese language newspaper, said in an editorial that the two countries' commitment to building an all-round and mutually beneficial, win-win economic partnership, as put in their joint statement, is the greatest achievement that comes out of the meeting between the leaders of the two countries in the economic sphere.Nouvelles D'Europe, a major Chinese language newspaper in France, said in an editorial that Hu's visit yielded fruitful results which are indispensable to world peace and development.In their joint statement, the two countries for the first time defined that China-U.S. partnership is based on mutual respect and mutual benefit. Stable China-U.S. relations contribute to world stability, and a win-win scenario between China and the United States is conducive to a scenario of multi-party-win in a multipolar world, it said.International Daily News, an Indonesian newspaper, said that Hu's visit achieved a historic breakthrough. Their joint statement signaled a new chapter in their "cooperative partnership based on mutual respect and mutual benefit," and Asia is hailing the new orientation of bilateral ties and achievement set up by the leaders of the two countries.