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LOS ANGELES, April 10 (Xinhua) -- Drinking green tea and practicing Taichi may promote bone health of postmenopausal women and reduce the risk of inflammation, a new study suggests.The study, conducted by researchers at the Laura W. Bush Institute for Women's Health at the Texas Tech University Health Sciences Center, focused on postmenopausal women and investigated the potential for green tea to work synergistically with Taichi in enhancing bone strength of postmenopausal women.Originating as a martial art in China, Taichi is a mind-body exercise that utilizes slow, gentle movements to build strength and flexibility, as well as deep breathing and relaxation, to move qi, or vital energy, throughout the body.The study findings were published Sunday at EurekAlert.org, the website of the American Association for the Advancement of Science (AAAS).Carried out as a double-blind, placebo-controlled, intervention trial (the "holy grail" of scientific studies), this experiment involved 171 postmenopausal women with the average age of 57 who had weak bones but not full-fledged osteoporosis. Subjects were divided into 4 groups -- placebo: starch pill (placebo) and no Taichi; GTP or green tea polyphenols (500 mg/day) and no Taichi; Placebo plus Taichi (starch pill and practising Taichi three times a week); and GTP plus Taichi.The study lasted for 6 months, during which blood and urine samples were collected and muscle strength assessed.The results show that consumption of GTP (at a level equivalent to about four-six cups of steeped green tea daily) and participation in Taichi independently enhanced markers of bone health by three and six months, respectively. A similar effect was found for muscle strength at the 6-month time point. Participants taking Taichi classes also reported significant beneficial effects in quality of life in terms of improving their emotional and mental health.Perhaps most remarkable, however, was the substantial effect that both GTP and Taichi had on biological markers of oxidative stress. Because oxidative stress is a main precursor to inflammation, this finding suggests that green tea and Taichi may help reduce the underlying etiology of not only osteoporosis, but other inflammatory diseases as well.In the study, the researchers developed an animal model (the ovariectomized, middle-aged female rat), with which they could effectively study the effects of green tea consumption on protection against breakdown of the bone's microarchitecture, according to the AAAS.In humans, this can lead to osteoporosis, a condition common to older women. The researchers say what they have learned from the animal models might also be applicable to postmenopausal women.There is a "favorable effect of modest green tea consumption on bone remodeling in this pre-osteoporotic population," said lead researcher Dr. Chwan-Li (Leslie) Shen, an associate professor at the institute.The researchers plan to soon complete a more long-term study utilizing more technically savvy measures of bone density, according to the AAAS.

BEIJING, March 19 (Xinhua) -- In spite of the fact that snow still covers his farmland, Jiang Chen has been busy stocking fertilizers and seeds to prepare for the coming spring farming season."I am almost ready for the sowing," said Jiang, a 64-year-old peasant who farms five hectares of cropland in Liujia Township in Yushu City, northeast China's Jilin Province. "But the costs are rising so I still want to look for better seeds providing a higher yield this year."As the Chinese government continued policies to assure a good grain harvest this year, millions of farmers like Jiang in China's major grain-producing regions such as Jilin, Heilongjiang, Shandong and Henan provinces are now gearing up to finalize preparations for the coming sowing season.The central government's incentives in 2011 include increases in minimum rice purchase prices by 9.7 percent to 21.9 percent from last year, as well as 24.9 billion yuan (about 3.77 billion U.S. dollars) in subsidies to the national grain risk fund for farmers."Though farmers are richer now than before, our economic strength remains relatively weak as compared with urban residents," Jiang said.He noted that he was considering investing less this year because the cost of agricultural production has increased year after year.The average urea price from manufacturers and retailers rose about 10 percent from last year to about 1,980 yuan and 2,100 yuan per tonne at a grain and oil wholesale market near Yuquan Road in Beijing, where many farmers from neighboring Hebei, Henan and Shandong provinces buy agricultural fertilizers and additives.Urea is the primary fertilizer used by Chinese grain growers, though many of the farmers said that they would reduce the use the compound in their fields due to rising prices and the impact on wheat caused by the widespread drought in north China this winter.Wang Quan, the president of China National Agricultural Means of Production Group Corp., the country's largest supplier of agricultural materials, predicted that the use of urea during the spring farming season would be between 20 million tonnes to 25 million tonnes, which is about two fifths of the year's total.Wang said that the urea price is around 400 U.S. dollars per tonne in global markets, or 15.7 percent higher than the domestic price."I think it takes time for Chinese farmers to accept the price hikes gradually," he added.Analysts say that the different perceptions on urea prices between manufacturers and farmers may have affected China's crops because the reduced use of fertilizers usually mean less grain output in the country since many farmers depend more on fertilizers, rather than technology to boost production.China's grain output rose 2.9 percent last year to 546.41 million tonnes, marking the seventh consecutive year of growth. The country aims to keep its 2011 grain production over 500 million tonnes, according to an executive meeting of the State Council, or the Cabinet, Thursday.Chinese Premier Wen Jiabao said last month that rising costs of grain production, the lingering drought in north China's major wheat-growing regions and the weakening of agricultural production in some areas would directly affect China's summer grain output.Facing challenges such as higher costs for growing grain, Jiang believed that he could generate higher income from his crops this year with the support of the agricultural sector by the government."If the grain prices also rise this year, I can still earn a net income of 10,000 yuan for every hectare of farmland," Jiang said."I hope to keep my farmland from being seized for industrial or residential development," he added.

BEIJING, March 27 (Xinhua) -- China's search giant Baidu has pledged to remove all unauthorized literary works from its free online literary database Wenku within three days.After receiving requests from copyright owners to remove their works, Baidu has sped up its process of checking for unauthorized items. The unauthorized works were uploaded by Internet users to Wenku without prior approval from the authors, a spokesman for the Chinese search engine giant said in a statement.In the statement issued Saturday, Baidu apologized for what has "hurt the feelings of a certain number of writers" during Wenku's previous stage of operation, according to a report published Sunday by daily newspaper The Beijing News.Baidu said it respects copyright laws and will continue to cooperate with publishers and writers to establish a revenue-sharing model that will ensure that copyright owners receive a share of revenues from online versions of their works.Hailing Baidu's move to remove the unauthorized works, Wang Yefei, deputy head of Beijing Municipal Bureau of Copyrights hopes that Baidu and the publishers should work together to find win-win methods of mutual cooperation, according to the newspaper.However, some writers involved in the copyright row are dissatisfied with remedies Baidu has so far taken.Shen Haobo, CEO of Beijing Motie Book Co. Ltd, one of the six negotiators representing writers in Thursday's negotiations, told the Beijing Youth Daily that Baidu apologized only because of public pressure, but it did not mean to alter its current operation model for Wenku."Without changes in the operation model, the unauthorized works, even if removed now, could be uploaded again sometime later. Besides, it's unacceptable that Baidu reiterated that it had not infringed on our copyright," Shen was quoted as saying.Popular writer and blogger Han Han posted an open letter he wrote to Baidu's CEO Li Yanhong in his blog, indicating that he might take further actions to uphold his rights if Baidu's stance remains unchanged.Baidu's online literary database Wenku is an open platform for online resource sharing. It has been in operation since 2009.More than 40 Chinese writers posted an open letter online on March 15, accusing Baidu of stealing their works and infringing on their copyrights. Baidu's Wenku database was blamed for allowing literary works to become available online without the authors' prior approval.Baidu was asked to make a public apology, compensate for the writers' losses and halt any cases of copyright infringement.

GUIYANG, Feb. 13 (Xinhua) -- Chinese Vice Premier Li Keqiang has called for providing more support to the country's less developed regions, saying priority should be placed on improving the people's livelihood.He made the remarks during an inspection tour to Qiannan Buyi and Miao Autonomous Prefecture and Guiyang City in southwest China's Guizhou Province from Feb. 11 to 13, according to an official statement Xinhua received Sunday.Li said more attention should be directed to improve people's living standards as China is making efforts to achieve its strategic goals of development.During his tour, Li visited some residents' homes at a poor village in Libo County of Qiannan.He called for greater efforts to improve people's livelihood, a step which would help boost domestic demand and facilitate the transformation of the nation's economic growth mode.Li urged local authorities to work well on the safety of drinking water, road construction in rural areas, and the remodeling of old houses. In particular, schools should be made accessible for children from poor homes.Further, he demanded greater efforts from local governments to improve the health care system that covers the three levels of county, township and village, and relieving the financial burden of the masses in health care services.In Guiyang, Li inspected a local company in constructing affordable housing for low-income earners and visited poor homes in Yunyan district. He said greater efforts should be made in accelerating the supply of affordable housing for those in need.

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.