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BEIJING, July 19 (Xinhuanet) -- Lifestyle changes such as exercise, eating healthily and not smoking could reduce the chances of having Alzheimer’s disease by half, researchers said in a study quoted by news reports Tuesday.Hundreds of thousands of patients could potentially avoid the devastating illness by simply changing bad habits, according to the study published in the journal Lancet NeurologyFor the first time, scientists have calculated the extent to which certain lifestyle traits -- including lack of exercise, smoking and obesity -- all contributed to the disease.Researchers found that in the Western world, an inactive “couch potato” lifestyle was the most important possible cause.Smoking, obesity in middle-age, high blood pressure and diabetes all increased the risk as they cause damage to blood vessels in the brain, leading to death of brain cells. Together, the modifiable risk factors contributed to 50 percent of Alzheimer’s cases worldwide.The researchers want to carry out more work to find out how many people can prevent the disease by making small changes to their lifestyle.

SAN FRANCISCO, Aug. 9 (Xinhua) -- Nokia is planning to stop selling its low-end phones and smartphones in the United States, instead focusing on products using Microsoft's Windows Phone platform, U.S. media reported on Tuesday.The Finnish handset maker will end sales of its low-end Series 40 phones and smartphones based on the Symbian mobile operating system in the United States and Canada, as it needs to put all of its efforts into the Windows Phone products which are due out later this year, Chris Weber, head of Nokia's U.S. subsidiary, told technology news site All Things Digital."When we launch Windows Phones we will essentially be out of the Symbian business, the S40 business, etc.," Weber said.Staff members speak to trade visitors at the Nokia booth at the CommunicAsia expo in Singapore June 21, 2011.In February, Nokia and Microsoft announced plans to form a broad strategic partnership, under which Nokia agrees to adopt Windows Phone as its principal smartphone strategy.North America is a priority for Nokia, Weber noted, in part because it is a key market for Microsoft and also because Nokia sees it as a key to winning in the smartphone battle globally."We'll develop for North America and make the phones globally available and applicable," Weber said.In another development, technology blog Engadget and other U.S. media on Tuesday reported that Nokia will not bring N9, its first smartphone running the Linux-based mobile operating system MeeGo, to the U.S. market."After the very positive reception to the launch of the Nokia N9, the product is now being rolled out in countries around the world. At this time we will not be making it available in the U.S., " Nokia said in a statement.

WASHINGTON, June 16 (Xinhua) -- Cells in the human body are constantly being exposed to stress from environmental chemicals or errors in routine cellular processes. While stress can cause damage, it can also provide the stimulus for undoing the damage. New research by a team of scientists at the University of Rochester has unveiled an important new mechanism that allows cells to recognize when they are under stress and prime the DNA repair machinery to respond to the threat of damage.Their findings will be published Friday in journal Science. Cells in the human body are constantly being exposed to stress from environmental chemicals or errors in routine cellular processes. While stress can cause damage, it can also provide the stimulus for undoing the damage.The scientists, led by biologists Vera Gorbunova and Andrei Seluanov, focused on the most dangerous type of DNA damage -- double strand breaks. Unrepaired, this type of damage can lead to premature aging and cancer. They studied how oxidative stress affects efficiency of DNA repair. Oxidative stress occurs when the body is unable to neutralize the highly-reactive molecules, which are typically produced during routine cellular activities.The research team found that human cells undergoing oxidative stress synthesized more of a protein called SIRT6. By increasing SIRT6 levels, cells were able to stimulate their ability to repair double strand breaks. When the cells were treated with a drug that inactivated SIRT6, DNA repair came to a halt, thus confirming the role of SIRT6 in DNA repair. Gorbunova notes that the SIRT6 protein is structurally related to another protein, SIR2, which has been shown to extend lifespan in multiple model organisms."SIRT6 also affects DNA repair when there is no oxidative stress," explains Gorbunova. "It's just that the effect is magnified when the cells are challenged with even small amounts of oxidative stress."SIRT6 allows the cells to be economical with their resources, priming the repair enzymes only when there is damage that needs to be repaired. Thus SIRT6 may be a master regulator that coordinates stress and DNA repair activities, according to Gorbunova.

BEIJING, Aug. 26 (Xinhua) -- China's maritime authority on Friday once again urged U.S. oil giant ConocoPhillips to finish cleaning up oil spills in north China's Bohai Bay as soon as possible.Aug. 31 is the deadline set by the government. "There are only five days to go before the arrival of the deadline," said a statement of the State Oceanic Administration (SOA).The SOA urged ConocoPhillips China to adopt all technical measures that could be used to clean up oil spills, and to do it "with an active manner."Liu Cigui, head of the SOA, said Thursday that his administration is collecting evidence and gauging the ecological impact of the spills in preparation for possible legal action against the company.ConocoPhillips China, a subsidiary of ConocoPhillips, first reported the oil spills in June. The spills have spread to beaches in Hebei and Liaoning provinces and been blamed for losses in local tourism and aquatic farming industries.Although the company has worked to clean up the spills, pollutants have still been found in the bay, even after cleanup efforts were reported to be complete.ConocoPhillips China admitted that a total of 16 oil spill sources have been found in the bay as of Friday.

CHENGDU, Sept. 20 (Xinhua) -- A United Nations official said Tuesday that she hopes China will take every opportunity to reinforce, support and lead the UN's agenda and "infuse it with strength and wisdom.""The more China gives, the better the UN can become," said Renata Lok-Dessallien, UN Resident Coordinator and United Nations Development Program (UNDP) Resident Representative in China, at the Seminar in Memory of the 40th Anniversary of the Resumption of Lawful Rights of China in the United Nations.The three-day seminar from Sept. 19 to 21 is being held in the city of Chengdu in southwest China's Sichuan Province. About 100 UN and Chinese officials are gathering to discuss China's role in the UN, as well as the UN's role in global diplomacy.Lok-Dessallien said that the General Assembly Resolution of Oct. 25, 1971 was an "important milestone in China's international relations and in the history of the United Nations.""It restored the rights of the People's Republic of China in the United Nations and marked China's entry to the world stage," she said.Steven Sabey, a senior policy advisor from the UNDP's China office, said that China plays an important role in facilitating cooperation about the member states of the United Nations."China needs the United Nations, and the United Nations also needs China," said Wu Hailong, China's assistant minister of foreign affairs."We must recognize that as the largest developing country in the world, China needs to manage its domestic affairs first, as this can have a positive effect on humanity as a whole," Wu said.As China's role in the world continues to grow and evolve, the UN's role in China will also grow, according to Lok-Dessallien."As China's development trajectory continues to evolve, we are entering significantly new territory in the UN-China relationship," she said.Sabey said that he hopes China will strengthen its cooperation with the United Nations in order to further improve intercultural communication and allow China to contribute more to other developing countries."The United Nations is committed to continuing to deepen and strengthen our partnership as we tackle the many global challenges ahead," said Lok-Dessallien.

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