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BEIJING, Nov. 5 (Xinhua) -- China said Saturday that positive and balanced outcomes were achieved at the sixth summit of the Group of Twenty (G20) held earlier this week in the southern French city of Cannes."All the sides were committed at the summit to further coordinating their macro-economic policies, stabilizing the financial market, prompting economic growth, improving global economic governance and working together to maintain the hard-won momentum of the economic recovery," said Ma Zhaoxu, spokesman of the Chinese delegation after President Hu Jintao returned from Cannes, where Hu and the leaders of other G20 members' met to tackle major issues affecting global economic recovery and financial stability.The Chinese spokesman mentioned the Declaration, the Communique and the Action Plan issued after the meeting as "three outcome documents" of the G20 Cannes summit.Ma said priority was given to the European sovereign debt issue at the meeting."All the sides noted that the European Union has recently put forward a new series of measures and ideas to address the sovereign debt issue and hope that these measures will help Europe to stabilize the financial market, overcome the current difficulties and spur the economic recovery and development," he said.The Cannes Action Plan approved at the summit was meant to coordinate the macro-economic policies of all the members to endorse economic recovery and summon market confidence, said the spokesman. "It (the passage of the Action Plan) fully displays the resolution of the G20 to work hand in hand to promote a robust, sustainable and balanced world economy."Ma also hailed the "important consensus" reached at the summit in terms of the reform of the international monetary and financial system, the vibration of commodity price, international trade and development among others."It was emphasized at the summit that to address the issue of development is a key task to advance the global economic recovery and growth in the future," he said.Ma said emerging economies played an "important and constructive" role during the G20 summit.The continuing economic growth of emerging nations have injected vitality into the stability and recovery of the world economy as the international financial market is striving in turmoil, he said.Developing countries, represented by the emerging ones in the G20, have become constructive participants of global economic governance, said the spokesman, "which is a great progress of the era and indicates an in-depth readjustment and a historic change in the international economic order," he added.

SAN FRANCISCO, Nov. 12 (Xinhua) -- Apple has unveiled a worldwide replacement program for the first-generation iPod nano music player due to overheating battery issues, telling owners to stop using the product and get it replaced for free."Apple has determined that, in very rare cases, the battery in the iPod nano (1st generation) may overheat and pose a safety risk. Affected iPod nanos were sold between September 2005 and December 2006," said Apple in a notice posted late Friday on the support section of its official website.The company said the issue has been traced to a single battery supplier that produced batteries with a manufacturing defect. Since the product is five or six years old now, the likelihood of an incident increases.Owners of iPod nano can check the serial number on the back of the product to see if it is eligible for replacement. Apple promises a replacement unit about six weeks after the company received the affected one.The overheating battery issues of the first generation iPod nano have been known for years. In 2008, Japan's Ministry of Economy, Trade and Industry launched an investigation into Apple after dozens of iPod overheating cases were reported, including several incidents of iPod nanos toasting to the point of catching fire and causing minor burns to owners.Last August, a commuter train in Tokyo was delayed during rush hour when passengers complained of a strong burning smell from an overheating iPod nano that had burst apart.The portable music player also cost Apple a 22.5 million-U.S. dollar settlement in 2009 when a class action lawsuit in California alleged iPod nano is prone to scratches and its alleged defects were not disclosed by the company.

WASHINGTON, Dec. 7 (Xinhua) -- Drugs that affect the levels of an important brain protein involved in learning and memory reverse cellular changes in the brain seen during aging, according to an animal study published Wednesday in the Journal of Neuroscience. The findings could one day aid in the development of new drugs that enhance cognitive function in older adults.Aging-related memory loss is associated with the gradual deterioration of the structure and function of synapses (the connections between brain cells) in brain regions critical to learning and memory, such as the hippocampus.Recent studies suggested that histone acetylation, a chemical process that controls whether genes are turned on, affects this process. Specifically, it affects brain cells' ability to alter the strength and structure of their connections for information storage, a process known as synaptic plasticity, which is a cellular signature of memory.In the current study, Cui-Wei Xie, of the University of California, Los Angeles, and colleagues found that compared with younger rats, hippocampi from older rats have less brain-derived neurotrophic factor (BDNF) -- a protein that promotes synaptic plasticity -- and less histone acetylation of the Bdnf gene. By treating the hippocampal tissue from older animals with a drug that increased histone acetylation, they were able to restore BDNF production and synaptic plasticity to levels found in younger animals."These findings shed light on why synapses become less efficient and more vulnerable to impairment during aging," said Xie, who led the study. "Such knowledge could help develop new drugs for cognitive aging and aging-related neurodegenerative diseases, such as Alzheimer's disease," she added.

WASHINGTON, Dec. 28 (Xinhua) -- People with diets high in several vitamins or in omega 3 fatty acids are less likely to have the brain shrinkage associated with Alzheimer's disease than people whose diets are not high in those nutrients, according to a new study published on Wednesday in the online issue of Neurology, the medical journal of the American Academy of Neurology.Those with diets high in omega 3 fatty acids and in vitamins C, D, E and the B vitamins also had higher scores on mental thinking tests than people with diets low in those nutrients. These omega 3 fatty acids and vitamin D are primarily found in fish. The B vitamins and antioxidants C and E are primarily found in fruits and vegetables.In another finding, the study showed that people with diets high in trans fats were more likely to have brain shrinkage and lower scores on the thinking and memory tests than people with diets low in trans fats. Trans fats are primarily found in packaged, fast, fried and frozen food, baked goods and margarine spreads.The study involved 104 people with an average age of 87 and very few risk factors for memory and thinking problems. Blood tests were used to determine the levels of various nutrients present in the blood of each participant. All of the participants also took tests of their memory and thinking skills. A total of 42 of the participants had MRI scans to measure their brain volume. Overall, the participants had good nutritional status, but seven percent were deficient in vitamin B12 and 25 percent were deficient in vitamin D.Study author Gene Bowman, of Oregon Health & Science University in Portland, said that the nutrient biomarkers in the blood accounted for a significant amount of the variation in both brain volume and thinking and memory scores. For the thinking and memory scores, the nutrient biomarkers accounted for 17 percent of the variation in the scores. For brain volume, the nutrient biomarkers accounted for 37 percent of the variation."These results need to be confirmed, but obviously it is very exciting to think that people could potentially stop their brains from shrinking and keep them sharp by adjusting their diet," Bowman said.

TEHRAN, Oct. 9 (Xinhua) -- Iran is going to launch domestically- built Navid satellite by Safir satellite launcher by the end of March 2012, the semi-official Mehr news agency reported on Sunday.Navid (promise) is a research satellite and is currently undergoing pre-launch tests, said the report without further details.In June, Iran put the Rasad (surveillance) satellite in the orbit to render images to the country.Iran put a satellite into orbit in 2009 and sent some small animals into space in 2010. It plans to send man into space by 2020.