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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.

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.

VIENNA, April 12 (Xinhua) -- A protein group has been identified as an "allergy multiplier" that causes food allergy, a symptom that could also accompany other allergies and produce serious consequences, Austrian researchers said Tuesday.The so-called non-specific lipid transfer proteins (nsLTP) are believed to be the causes of food allergy, a research team from the Medical University of Vienna said in a new report.These plant allergens are found not only in many fruits and vegetables, but also in cereals and some types of pollen. Due to their compact structures, they are not degraded in the gastrointestinal tract and can trigger immune reactions that cause severe allergic symptoms, said the report.The researchers believe that with nsLTP identified as an " allergy multiplier," diagnostic and treatment procedures could be adapted and improved.

NICOSIA, March 8 (Xinhua) -- Cypriot geneticists have reported a non-invasive Down's Syndrome test that could possibly replace the risky amniocentesis procedure now in use.A team of researchers at the Cyprus Institute of Neurology and Genetics reported in Nature Medicine journal that the new test involves only a small quantity of blood taken from the mother's arm, which is analyzed to detect DNA differences between the mother and the fetus.Philippos Patsalis, medical director of the institute, said Tuesday the new method eliminates dangers involved with amniocentesis testing, which involves sampling amniotic fluid by inserting a hollow needle into the mother's uterus.At present, only women belonging to high risk groups, including older women, are tested for Down's Syndrome, which is the most common genetic cause of mental retardation.Patsalis, who led the study, said the new method would be made available to the medical community after clinical tests are concluded world-wide on 1,000 women within two years.

来源：资阳报