中山痔疮的症状治疗(中山肛门痛医院) (今日更新中)

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.

MOSCOW, Jan. 21 (Xinhua) -- Russian and Chinese companies started construction of an iron ore dressing plant Friday in the Evreyskaya Autonomous Oblast to provide high-grade iron ore to the Asia Pacific region, including China.Yury Makarov, chief executive officer of IRC Ltd., told Xinhua the plant would reach its designed capacity in 2013 at 10 million tons of iron ore and 3.2 million tons of iron ore concentrates, which contain up to 65 percent iron.Makarov said that 20 percent of the iron ore concentrates, which are natural iron ore processed through crushing, grinding and dressing, would be used to meet demands of Russia's far east and the rest would go to the Asia-Pacific market. Currently, China imports large amounts of concentrates from Brazil, Australia and India."We are very open to interaction with various countries of the Asia-Pacific region, especially China. The volume of processed iron ore has been increasing every year. We will be happy to deliver iron ore to your companies as well as any other consumers who are willing to purchase our products," he said.The plant will draw its resources from the Kimkanskoye and Sutarskoye deposits and send its products through the Khabarovsk Krai and the Suifenhe port to China.The plant is only 7 km from the Trans-Siberian Railway. A railway bridge is being planned between Evreyskaya Oblast and Heilongjiang to further shorten the supply route.Total investment in the plant is 400 million U.S. dollars, with 340 million in loans from the ICBC (Industrial and Commercial Bank of China) in China. Interest under the facility will be charged at 2.8 percent above LIBOR per annum. The China National Electric Engineering Co, Ltd is tasked with the construction of the plant.Makarov said he was very optimistic about the future of the plant and the development of relations between the Russia's far east and China's northeastern region.IRC Ltd. is a metal unit of Russian gold miner Petropavlovsk PLC. It became the second Russian company to be listed on the HK stock exchange, when it started trading on Oct. 21.

BEIJING, Jan. 26 (Xinhua) -- Chinese Premier Wen Jiabao Wednesday invited more foreign talents to continue their careers or start businesses in China, pledging better conditions for them.During a seminar with more than 20 veteran foreign experts at the Great Hall of the People a week before the Chinese New Year, Wen thanked the foreign friends for their contributions to China's achievements in 2010.Wen said 2011 is a new starting point for China's modernization, as the country implements its 12th five-year plan for economic and social development."China's development is much more associated with the world and the supply of talents than before," Wen said, adding that China will adopt a more open policy to attract overseas experts.Last year, foreign experts made more than 300,000 visits to China, according to Ji Yunshi, general director of the State Administration of Foreign Experts Affairs.

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.

来源：资阳报