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WASHINGTON, Nov. 21 (Xinhua) -- The use of acupuncture for children is common and acupuncture is generally safe for children when performed by "appropriately trained practitioners," Canadian researchers reported Monday in online journal Pediatrics.Researchers at the University of Alberta looked at data from 37 studies of needle acupuncture, spanning 60 years, on children from birth to age 17, and assessed the association between needle acupuncture and various levels of adverse events in children. They found that of 279 adverse events identified, 253 were mild, one was moderate and 25 were serious.Serious side effects included bleeding, infections, and heart and lung problems. One child may have contracted HIV. But the researchers said the serious side effects were related to substandard conditions from the care provider, rather than acupuncture's technique itself. They concluded that in trained hands, pediatric acupuncture is safe.Acupuncture has been around for thousands of years, and traditional Chinese theory suggests needle placement helps balance the body's energy flow, called "qi". Acupuncture is sometimes used to treat headaches, migraines, back and joint pains, cramps, and chemotherapy-induced nausea. Estimates show 150,000 U.S. children undergo acupuncture each year.

MOSCOW, Nov. 25 (Xinhua) -- Russia's Proton-M carrier rocket was launched on Friday from the Baikonur space center in Kazakhstan with a Chinese communications satellite "AsiaSat-7", according to Russia's Federal Space Agency Roscosmos.Roscosmos' live broadcast on its official website showed that the Proton-M rocket atop the Briz-M upper stage was launched at 23: 10 Moscow time (1910 GMT). The separation of the satellite from the rocket was scheduled for 08:23 Moscow time (0423 GMT) on Saturday.The AsiaSat-7 which belongs to the Asia Satellite Telecommunications Company Limited (AsiaSat) located in Hong Kong, China, is a new generation satellite designed to replace AsiaSat 3S at the orbital location of 105.5 degrees East.The new satellite was expected to support a broad range of applications for the Asia-Pacific region, including television broadcast and VSAT (Very Small Aperture Terminal) networks.

BEIJING, Dec. 17 (Xinhuanet) -- Restrictions on housing purchases in this city will continue next year without relaxation despite expected falls in property prices so far, local officials said on Friday. Even so, a property tax is unlikely to be put into effect for Beijing, they said.This year, the average price of commercial housing units stopped rising in July and so far has been lowered by 6.3 percent below what it had been in the same period last year. Of all of those who bought property in the 11 months of the year, 90 percent were first-time buyers, said an announcement released by the Beijing Municipal Commission of Housing and Urban-Rural Development."The restrictions worked well this year," said Wang Rongwu, with the commission, at a news conference on Friday morning. "But keeping the property market sound will require prolonged restrictions. Our specific goals for the purchase limits next year are still under discussion."Chen Baocun, deputy secretary-general of the National Real Estate Manager Alliance, said property developers will be able to cope with an extension of the limits."Developers didn't expect a sudden drop of the purchase restrictions next year," he said. "They are prepared to accept the policies for a longer time."In an attempt at tamping down property prices, the central government took time at the country's central economic work conference on Wednesday to encourage more cities to adopt a property tax. Such a tax is already being tried out in Shanghai and Chongqing.Beijing, though, is not likely to look seriously at adopting one, "unless it is otherwise required to by the central government", Wang said.

WASHINGTON, Dec. 21 (Xinhua) -- New research suggests that, in people who don't currently have memory problems, those with smaller regions of the brain's cortex may be more likely to develop symptoms consistent with very early Alzheimer's disease.The study was published Wednesday in the online issue of Neurology, the medical journal of the American Academy of Neurology.For the study, researchers used brain scans to measure the thickness of regions of the brain's cortex in 159 people free of dementia with an average age of 76. The brain regions were chosen based on prior studies showing that they shrink in patients with Alzheimer's dementia.Of the 159 people, 19 were classified as at high risk for having early Alzheimer's disease due to smaller size of particular regions known to be vulnerable to Alzheimer's in the brain's cortex, 116 were classified as average risk and 24 as low risk. At the beginning of the study, participants were also given tests that measured memory, problem solving and ability to plan and pay attention. The tests will go on over the next three yearsThe study found that 21 percent of those at high risk experienced cognitive decline during three years of follow-up after the MRI scan, compared to seven percent of those at average risk and none of those at low risk."Further research is needed on how using MRI scans to measure the size of different brain regions in combination with other tests may help identify people at the greatest risk of developing early Alzheimer's as early as possible," said study author Bradford Dickerson, of Massachusetts General Hospital in Boston and a member of the American Academy of Neurology.

OTTAWA, Oct. 26 (Xinhua) -- Canadians are working about three years longer before retirement than they were in the 1990s, and have a longer life in retirement, an official study said Wednesday.Statistics Canada, the federal statistics agency, reports that Canada' s men and women, who don't face compulsory retirement, are increasingly choosing to delay retirement, as part of a long-term trend that has begun before the recent recession.The trend of later retirement dates back to the mid-1990s, when a 50-year-old employee could expect to work another 12.5 years before retiring from the daily grind.Today, that same 50-year-old worker could expect another 16 years of employment.The study says that 34 percent of Canadians aged 55 and older were employed in 2010, compared to just 22 percent in 1996.A longer working life would unnecessarily imply a shorter life in retirement due to increased life expectancy, the study says.The study notes that men and women leaving the work force today are spending as much time in their post-career life as many of their predecessors did.For example, between 1977 and 1994, the typical retirement length for a man in Canada rose from 11.2 to 15.4 years; as of 2008, it was 15 years.For women, the average retirement length similarly rose from 16.4 to 20.6 years between 1977 and 1996; as of 2008, it was 19 years.From another point of observation, 50-year-old men can expect to spend 48 percent of their remaining years of life in retirement in 2008,compared with 45 percent in 1977.In 2008, 50-year-old women could expect to spend 55 percent of their remaining years of life in retirement, nearly identical to the proportion in 1977.