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HAIKOU, Jan. 28 (Xinhua) -- China's aviation authorities on Friday started to allow helicopters to fly in low-altitude airspace over the tourist island of Hainan on a trial basis for the first time. The aim is to eventually open a part of the country's tightly-controlled airspace to private aircraft.Four helicopters were manned by eight pilots from Shanghai-based Zhengyang Investment Group, a leading domestic firm in the general aviation industry. They are expected to conduct test flights in the sky, 1,000 meters above the ground in Hainan in the next two months.The flight test will collect data for low-altitude flying and test the ground control system's response to emergencies, said Zou Jianming, chairman of Zhengyang Investment Group.Hainan is the first place in China to conduct test flights of private aircraft in low-altitude airspace, said Jiang Sixian, deputy governor of the province. Domestic and foreign firms are both welcome to invest in Hainan's general aviation sector to develop world-class tourism here.China's low-altitude airspace is controlled by the Air Force and the Civil Aviation Administration of China (CAAC). Every private aircraft flight needs approval, and the procedure can take from one day up to a week.But last November, the State Council and the Central Military Commission said that part of the low-altitude airspace would be opened to promote the country's general aviation sector, including the purchase and use of private planes.General aviation refers to the part of the aviation industry that excludes flights for military, law enforcement and public transport. China has only 900 aircraft, 80 airports and fewer than 10,000 pilots in the general aviation segment.The market for general aviation in China is valued at only 13 billion yuan (1.98 billion U.S. dollars) but is expected to grow by 15 percent annually until 2020, Hainan aviation officials said.

BEIJING, May 11 (Xinhuanet) -- New retirees suddenly confronted with plenty of time on their hands might be happy to learn that reading keeps one mentally alert and abreast of current aff airs, says Ursula Lenz of Germany's working group of senior citizens' organizations, BAGSO.Growing old can present difficulties such as failing eyesight or problems concentrating, but experts encourage the elderly not to give up on reading and to adapt to their situation.From the perspective of health professionals, there are many advantages to reading books or newspapers for senior citizens.Reading helps the elderly keep a sharp mind. The ability to transform words into mental images is good for cognitive performance. Reading also improves vocabulary, language use and the ability to concentrate, according to Simone Helck from the Kuratorium Deutsche Altershilfe, an organization in Germany that helps promote and develop strategies for taking care of the elderly.So, what exactly happens in the brain when we read?"The brain builds new synapses, junctions between the neurons, when it's stimulated such as during reading," says Manfred Gogol, a physician and president of Germany's Society for Gerontology and Geriatrics.Gogol recommends reading books that deal with subjects that are of special interest to the reader. If a long novel seems like too much work, then try a novella or collection of short stories.But a prerequisite for reading is that any sight defect is corrected by an optician.In response to the needs of elderly people, publishers print books with large typefaces and bigger line spacing. Lenz says it is worthwhile asking for large print books in libraries and bookshops.But no matter what the reading matter is, another important aspect is being able to exchange opinions about a book with other people. Whether it's a society magazine, highbrow literature or a daily newspaper, there is always something to talk about.

SAN FRANCISCO, May 3 (Xinhua) -- Microsoft announced on Tuesday that its Bing search engine will become the default search and mapping application on Blackberry phones.Microsoft Chief Executive Officer Steve Ballmer announced the partnership with Research in Motion (RIM), which makes Blackberry phones, at the Blackberry World Conference in Orlando, Florida, according to a Microsoft blog post.Ballmer said Microsoft would invest uniquely in the Blackberry platform in addition to its own Windows Phone platform."Bing will be deeply integrated at the BlackBerry OS (operating system) level," Ballmer said.Central to the collaboration, Blackberry devices will use Bing as the preferred search provider in the browser, and Bing will be the default search and map application for new devices presented to mobile operators, both in the United States and internationally, said Microsoft's Bing team in the blog post.Meanwhile, Bing is also shipping as the default search experience and map application for the newly released Blackberry Playbook, a RIM tablet computer which made market debut on April 19.On Tuesday's Blackberry conference, Ballmer called Google's Android ecosystem "chaos" and the Apple iOS "limited" before he hailed Windows Phone 7 and Blackberry. Microsoft and RIM are both competing with Apple, which makes the iPhone and iPad, and Google, which makes the Android operating system for smartphones and tablets in the booming mobile device market.

LJUBLJANA, April 12 (Xinhua)-- Slovenian surgeons have successfully developed a new method of breast reconstruction for cancer patients, the Slovenian Press Agency (STA) reported on Tuesday.Surgeons in Ljubljana Central Hospital use a three-dimensional mould to form a new breast from the patient's abdominal fat, and then have the tissue implanted and fixated in the place of the removed breast.The mould making technique, developed by the Ljubljana Faculty of Mechanical Engineering, uses a laser to make an exact imprint of the healthy breast, which is then used to make a mirror-image three-dimensional mould for the reconstruction.That is the first in the world to help woman patients overcome embarrassment of losing their breast after mastectomy, according to the report.Speaking of the effect of the treatment, Uros Ahcan, head of plastic surgery ward in Ljubljana Central Hospital , said that the reconstructed breast is as symmetrical as possible with the healthy breast.The latest breast reconstruction method has an advantage over artificial implants, because a breast reconstructed from adipose tissue grows and shrinks in case of weight gain and weight loss. In addition, the tissue has the same temperature as the rest of the body, the STA quoted Ahcan as saying.The Ljubljana Central Hospital have done eight breast reconstruction operations for cancer patients, all of them were successful, with ten more planned in the coming weeks, the report added.Some 1,200 Slovenian women are reportedly diagnosed with breast cancer annually. About 70 percent of the patients hope to have breast reconstruction after mastectomy.

WASHINGTON, May 4 (Xinhua) -- The U.S. National Aeronautics and Space Administration (NASA) announced Wednesday that its Gravity Probe B (GP-B) mission has confirmed two key predictions derived from Albert Einstein's general theory of relativity, which the spacecraft was designed to test.The experiment, launched in 2004, used four ultra-precise gyroscopes to measure the hypothesized geodetic effect, the warping of space and time around a gravitational body, and frame- dragging, the amount a spinning object pulls space and time with it as it rotates.GP-B determined both effects with unprecedented precision by pointing at a single star, IM Pegasi, while in a polar orbit around Earth. If gravity did not affect space and time, GP-B's gyroscopes would point in the same direction forever while in orbit. But in confirmation of Einstein's theories, the gyroscopes experienced measurable, minute changes in the direction of their spin, while Earth's gravity pulled at them.The findings are available online in the journal Physical Review Letters."Imagine the Earth as if it were immersed in honey. As the planet rotates, the honey around it would swirl, and it's the same with space and time," said Francis Everitt, GP-B principal investigator at Stanford University. "GP-B confirmed two of the most profound predictions of Einstein's universe, having far- reaching implications across astrophysics research."GP-B is one of the longest running projects in NASA history, with agency involvement starting in the fall of 1963 with initial funding to develop a relativity gyroscope experiment. Subsequent decades of development led to groundbreaking technologies to control environmental disturbances on spacecraft, such as aerodynamic drag, magnetic fields and thermal variations. The mission's star tracker and gyroscopes were the most precise ever designed and produced.GP-B completed its data collection operations and was decommissioned in December 2010."The mission results will have a long-term impact on the work of theoretical physicists," said Bill Danchi, senior astrophysicist and program scientist at NASA Headquarters in Washington. "Every future challenge to Einstein's theories of general relativity will have to seek more precise measurements than the remarkable work GP-B accomplished."

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