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SAN FRANCISCO, Dec. 2 (Xinhua) -- Only two weeks after its shipment, Amazon's Kindle Fire has already shown the momentum to grab the second place in global tablet computer market, research firm IHS predicted on Friday.Amazon is expected to ship 3.9 million Kindle Fire tablets during the last three months of 2011, the first quarter the product goes on sale, according to preliminary projection from IHS.The number will give Amazon a 13.8-percent share of global tablet market in the fourth quarter, surpassing the 4.8 percent held by No. 3 player Samsung, and second only to Apple's commanding 65.6 percent market share."Nearly two years after Apple Inc. rolled out the iPad, a competitor has finally developed an alternative which looks like it might have enough of Apple's secret sauce to succeed," Rhoda Alexander, senior manager of tablet and monitor research for IHS, said in a statement."Initial market response strongly suggests that Amazon, with the Kindle Fire, has found the right combination of savvy pricing, astute marketing, accessible content and an appropriate business model, positioning the Kindle Fire to appeal to a brand-new set of media tablet buyers," she added.IHS analysts noted that with a price tag of 199 U.S. dollars, the Kindle Fire has set a new bar for pricing, bringing the tablet within reach of a larger portion of the buying public.IHS expects Kindle Fire's rapid ascent to help fuel the expansion of the entire tablet market, now predicting that 64.7 million tablets will be shipped in 2011, higher than its previous forecast of 60 million issued in August.The total tablet shipment number this year will represent a 273- percent growth from 17.4 million units in 2010, said IHS, which has also increased its longer-term projection of global tablet shipment in 2015 to 287.2 million units.

KUNMING, Dec. 11 (Xinhua) -- By moonlight, Ma Yuanqiong, a grassroots AIDS prevention practitioner, and her colleagues slipped into a large community of migrant workers in the city of Jinghong in southwest Yunnan province.As usual, they were greeted tepidly. A dozen sex workers living in the community came to obtain free condoms and brochures on AIDS prevention and quickly dispersed."We visit these women every week. They are familiar with us, but rarely talk about themselves," said Ma, who is in charge of an AIDS prevention program targeting sex workers in Jinghong. The program was initiated by Fuhua International, a local NGO.Sex workers are highly sensitive and vigilant due to safety concerns, since sexual services are illegal in China, Ma said. They have become harder to find since local police started a persistent crackdown on prostitution two years ago and drove many sex workers underground, she said.INACCESSIBILITY IMPEDES EFFORTSJinghong is located in Xishuangbannan Dai autonomous prefecture. Bordering Laos and Myanmar, it's a famous tourist city where the underground sex industry thrives.The AIDS prevention program, which began in 2006, is aimed at improving sex workers' awareness of the epidemic -- which is primarily sexually transmitted -- and prompting them to change risky behavior.In the beginning, program workers quickly realized they faced a significant challenge. "We were often rejected, or even threatened when trying to get in touch with the sex workers at first," Ma said.But the practitioners persisted, approaching nonjudgmentally and treating them as friends, and eventually their efforts began to pay off.During the past five years, the program has provided free condoms and AIDS consulting services to more than 400 sex workers aged 14 to 58 and from many parts of the country, according to Ma.The program has even helped several sex workers give up the business and pursue legitimate careers.However, the organization currently only keeps in touch with about 100 sex workers and has found it more difficult to reach more.The police crackdown has made the sex workers, especially low-paid street hookers, more mobile and less visible, and Ma pointed out that low-paid sex workers are in greater need for outreach as they are more vulnerable to HIV infection than their their higher-paid counterparts."Low-level sex workers are at a heightened risk, as they and their clients, mainly migrant workers and the elderly, all have insufficient knowledge of the disease," she said.According to statistics provided by the provincial disease control and prevention center (CDC) of Yunnan, about 1.6 percent of sex workers in Yunnan have contracted HIV, while the ratio among the low-level group is 3 percent.By the end of October, Yunnan reported 93,567 HIV carriers and AIDS patients, the most among all provinces, autonomous regions and municipalities."We conducted a survey in Jinghong and neighboring Menghai County at the end of 2008 and found that low-level sex workers almost never used condoms then," said Kang Jun, head of the HIV/AIDS prevention and treatment office in Xishuangbanna.The survey also found that the low-level sex workers only charged about 20 yuan (3.2 U.S. dollars) for each service, and every day they received 16 clients on average, according to Kang.Ahead of the police crackdown, Kang and his colleagues had provided HIV testing services for more than 30 low-level sex workers, and the results showed that two of them had been infected by the virus."The testing work was forced to halt as the crackdown began soon and we could hardly find them," Kang said.The good news, he said, was that the local CDC will launch a four-year investigation on sex workers in Xishuangbanna next January as part of a massive state-funded research project.

YICHANG, Oct. 30 (Xinhua) -- China's Three Gorges Dam on Sunday reached its designed highest mark, the second time for the world's largest water control and hydropower project to run at full capacity.The water level hit 175 meters at 5 p.m. after storing water for nearly two months from the water level of 152 meters, said an official with the China Three Gorges Project Corporation (CTGPC), the developer of the project.A dozen hydropower turbo-generator units started operation on Sunday, generating power capacity of 8.2 million kw, said the official.The dam in central China's Hubei Province completed its first full-capacity test last October.Operating at full capacity should give full play to the dam's functions of generating hydroelectric power, delivering water to the lower reaches to alleviate spring droughts, and containing water from summer flooding, as required by the State Flood Control and Drought Relief Headquarters.The Three Gorges Project was launched in 1993 with a budget equivalent to 22.5 billion U.S. dollars.So far, monitoring shows the dam is operating smoothly.

BEIJING, Nov. 28 (Xinhuanet) -- Scientists in Canada have raised a prospect of reversing Alzheimer's disease by deep brain stimulation, according to media reports Monday.The technique here is known as deep brain stimulation -- applying electricity directly to regions of the brain. It has been used in tens of thousands of patients with Parkinson's as well as having an emerging role in Tourette's Syndrome and depression.The study at the University of Toronto took six patients with the condition. Deep brain stimulation was applied to the fornix -- a part of the brain which passes messages onto the hippocampus.Lead researcher Prof Andres Lozano said you would expect the hippocampus to shrink by five per cent on average in a year in patients with Alzheimer's.After 12 months of stimulation, he said one patient had a five per cent increase and another had an eight per cent increase.Prof Lozano told BBC: "This is the first time that brain stimulation in a human being has been shown to grow an area of your brain.""It was an amazing finding for us," he said.The findings were presented at the Society for Neuroscience conference in November but they have yet to be published in an academic journal.To test whether this is really working, rather than being a fluke result, the researchers are going to perform a larger trial.