济南男子医院咨询济南为什么有前列腺增生,济南男人手淫硬不起来怎么办,济南手术割包皮,济南阴茎红肿发痒,济南前列腺炎表现,济南生殖器分泌物突然增多,济南补肾早泄能治好吗

BEIJING, Sept. 23 (Xinhua) -- A defunct U.S. satellite is expected to crash down to Earth Friday, with nobody knowing where or when exactly it will hit. This was avoidable, a Chinese expert said Thursday.Pang Zhihao, a researcher from the Chinese Research Institute of Space Technology, told Xinhua that the crash could have been avoided had the satellite been put into a higher orbit, or manipulated to drop in the South Pacific when it had abundant fuel. It would pose no threat to Earth if these measures had been taken.NASA's tumbling, 5,900 kg Upper Atmosphere Research Satellite, or UARS, is the first of such man-made space vehicles that have been launched into outer space according to the agency's Mission to Planet Earth. The mission was launched in the 1990s.The mission is designed to provide data for better understanding Earth's upper atmosphere and the effects of natural and human interactions on the atmosphere.The satellite was deactivated in 2005 as it ran out of fuel and was left orbiting Earth like a big piece of space junk.There are other cases of defunct satellites. The European Space Agency said earlier its observation satellite ERS-2 has run out of fuel and is deorbiting. It would therefore also crash sooner or later.Pang said all countries which are operating space vehicles should take care of their own spacecrafts so that they won't pose any danger.The expert also said that the public need not worry too much.Pang said most spacecrafts will be incinerated upon re-entering Earth's atmosphere, and the debris will mostly likely fall into the ocean or hit an uninhabited area. In addition, a debris tracker is able to give a comparatively accurate prediction where the craft will fall about two hours before it hits Earth, giving residents, if there are any, time to evacuate.He added that there are several ways to minimize the threat of decommissioned spacecrafts, like putting them into higher orbits and crashing them into designated waters.Scientific progress would possibly bring about more ways of dealing with tumbling satellites. Scientists have already been trying to build spacecrafts with degradable materials so that they can self-destruct when re-entering Earth's atmosphere.

BEIJING, Aug. 18 (Xinhua) -- A controlled trial has found that Chinese herbal medicine decoction maxingshigan-yinqiaosan has a similar efficacy to oseltamivir in reducing time to fever resolution in people suffering mild H1N1 influenza virus infections.Carried out by a group of Chinese researchers, headed by Prof. Wang Chen with Beijing Chao-Yang Hospital under the Capital Medical University, the study was published by the famous internal medicine journal Ann Intern Med on Tuesday.Participants of the trial were 410 young adults aged 15 to 59 years with laboratory-confirmed H1N1 influenza.The researchers concluded that both active intervention, alone and in combination, were effective in reducing time to fever resolution in young adults with H1N1 flu, and therefore suggest that maxingshigan-yinqiaosan may be an alternative to oseltamivir.

XIAMEN, June 12 (Xinhua) -- Chinese mainland on Sunday announced a raft of measures on tourism, transportation, farmers and food safety to boost Taiwan's economic growth and cross-Strait relations.A pilot plan allowing mainlanders to visit Taiwan as individual tourists will start on June 28, which covers residents of Beijing, Shanghai and southeastern city of Xiamen at the first stage, said Wang Yi, head of the State Council's Taiwan Affairs Office.Wang told a conference at the weeklong Straits Forum being held in Xiamen of Fujian Province that the mainland and Taiwan also agreed to allow Fujian residents to visit the islands of Kinmen, Matsu and Penghu in the Taiwan Strait as individual tourists.Observers predict that the influx of mainland tourists will bring vitality to Taiwan's export-oriented economy which had greatly suffered from the global economic downturn.Currently, mainlanders are only allowed to visit Taiwan on package tours after the authorities lifted a partial ban in July 2008.At Sunday's conference, the two sides also announced to increase the number of cross-Strait passenger flights by more than 50 percent to 558 flights per week, and add terminals for the direct flights in four mainland cities, including one in northwestern city of Lanzhou, which brought the total number of cross-Strait flight terminals to 50 on both sides of the Strait.The moves aim to cope with the increasing number of mainlanders who wish to visit Taiwan.The number of mainland tourists traveling to the island reached 2.34 million as of the end of May, China's top tourism official said at the conference. There are also an increasing number of mainland business travelers and government delegations visiting Taiwan.Meanwhile, both sides agreed to "regulate airfares" for flights from Beijing and Shanghai to Taipei.Currently, the cheapest one-way ticket between Beijing and Taipei on Air China, the mainland's flagship carrier, costs around 1,300 yuan (about 200 U.S. dollars) while a full price one-way ticket costs more than 3,000 yuan, according to the airline's website.Some members of the public on both sides have complained about the high price.For the past decades, travelers had to transfer at other airports, particularly the one in Hong Kong, in order to reach Taiwan by air.In 2003, the two sides agreed to operate charter flights during Spring Festival, China's biggest public holiday.Regular direct flights across the Strait have been available since July 2008 to mainly serve mainland package tourists visiting Taiwan.The mainland also decided to facilitate entry and exit procedures for Taiwan residents and lower charges for endorsing their passports by 50 percent starting from July 1.Meanwhile, four "enterprising parks" will be set up in four cities of Fujian, central Henan and southwestern Guangxi provinces for Taiwan farmers launching agricultural startups on the mainland, said Wang Yi.Both sides also agreed to encourage mainland enterprises to purchase farm produce and other products listed in the early harvest program of the cross-Strait Economic Cooperation Framework Agreement (ECFA) directly in Taiwan.A general manager surnamed Lin of a farm produce company in Taiwan's southern city of Tainan said he hoped to seize the opportunity to benefit from the development of the island's farm and fishing sector as the mainland has become Taiwan's largest export market.Further, both sides agreed to strengthen cooperation and exchanges concerning nuclear power security and food safety.The third Straits Forum, which opened Saturday in Xiamen, facing Taiwan across the Strait, will close in the island's city of Taichung on Friday.

Beijing, Sept. 13 (Xinhuanet) -- A fear of taking antidepressants often results in people's reluctance of going to see the doctor when they are suffering from depression, a study find.The finding was published Monday in the U.S. journal Annals of Family Medicine.The researchers from the University of California investigated 1,054 adults on why they wouldn't tell the doctors about their depression symptoms, as well as any possible mental disorder.Among the participants, 43 percent admitted that they had been reluctant to tell the doctor about their depression symptoms.Their top concern was the possibility of being prescribed an antidepressant -- a worry voiced by 23 percent of the whole study group.Another 16 percent thought dealing with "emotional issues" is not the doctor's job. And a similar percentage worried that the diagnosis of depression may leave a negative record on their medical records.The study would be helpful for looking into the reasons that patients harbor the attitudes that they do, said Dr. Hellerstein of the New York State Psychiatric Institute and Columbia University Medical Center in New York.

GENEVA, Sept. 26 (Xinhua) -- Two million people worldwide are estimated to die from air pollution each year, the Geneva based World Health Organization (WHO) said in its air quality report published on Monday.According to data collected by the WHO from nearly 1,100 cities across 91 countries, elevated level of fine particle pollution, which could cause heart diseases, lung cancer, asthma and acute lower reparatory infections, are common across many urban areas, with some cities registering fine particle pollution levels 15 times as much as the WHO guidelines.For both developed and developing countries, the biggest contributors to urban outdoor air pollution include motor transport, small-scale manufacturers and other industries, burning of biomass and coal for cooking and heating, as well as coal-fired power plants.Residential wood and coal burning for space heating is said to be an important contributor to air pollution, especially in rural areas during colder months, the WHO report said.