中山大便时很费劲还拉出血来(中山大便后肛门坠胀感) (今日更新中)

WASHINGTON, July 18 (Xinhua) -- Exposure to secondhand smoke ( SHS) is associated with increased risk of hearing loss among adolescents, according to a report in the July issue of Archives of Otolaryngology -- Head and Neck Surgery.Among U.S. children, approximately 60 percent are exposed to SHS, according to background information in the article. Studies have associated exposure to secondhand smoke prenatally or during childhood with various health conditions, from low birth weight and respiratory infections to behavioral problems and otitis media. Children exposed to SHS are more likely to develop recurrent otitis media, the authors note. "Secondhand smoke may also have the potential to have an impact on auditory development, leading to sensorineural hearing loss (SNHL)," they add.Anil Lalwani and colleagues from New York University Langone Medical Center examined the risk factors for SNHL, including SHS, among adolescents, stratified by demographic groups. They included 1,533 individuals from 12 years to 19 years of age who participated in the National Health and Nutrition Examination Survey from 2005 to 2006.Participants were interviewed about their health status and family medical history, exposure to SHS, and self-recognition of hearing impairment. In addition, they underwent a physical examination, including blood testing for cotinine (a by-product of nicotine exposure), and hearing tests.Compared with teens who had no SHS exposure, those who were exposed to secondhand smoke exhibited higher rates of low- and high-frequency hearing loss. The rate of hearing loss appeared to be cumulative, increasing with the level of cotinine detected by blood tests. The results also demonstrated that more than 80 percent of participants with hearing loss did not realize they had impairment.As hearing loss early in life can cause problems with development and functioning, the authors suggest that these results have "significant implications for public health in the United States."They note that most adolescents do not receive screening for hearing loss in the absence of risk factors.If further studies replicate these results, they state, SHS could be considered one such risk factor.

VANCOUVER, Sept. 17 (Xinhua) -- The fourth International Health Qigong Tournament and Exchange kicked off the competition portion of the Vancouver event Saturday to showcase the health benefits of this increasingly popular activity.At a gala opening ceremony in the War Memorial Gymnasium at the University of British Columbia, the biennial tournament was being held outside of China for the first time in an effort to promote the exercise that involves controlled breathing, body postures, movement and mental concentration.The Vancouver tournament has attracted 44 Health Qigong groups from 25 countries and regions, 327 participants in all. The event was last held in Shanghai in 2009.Xiao Min, the All-China Sports Federation vice president, said after three successful events in China, it was important to explore the possibilities of rotating the host venues around the world to boost the exposure of Health Qigong to a wider audience, effectively strengthening the interaction of the Eastern and Western cultures.Calling it "one of the best Chinese traditional sports," Xiao added, "we still have a long way to go in promoting Health Qigong. However, we will try our best to promote it so as to bring health benefits to more people in the world."Sending a message read by Vancouver-based federal politician Wai Young, Canadian Prime Minister Stephen Harper said such a tournament would allow people to "cultivate their interest in and learn more about the benefits of this ancient Chinese healing system.""I would like to commend the organizing committee for putting together a program that promotes cultural exchange and encourages others to embrace Qigong teachings and practices for health, fitness and personal growth. I'm certain that the enthusiasts will make the most of this exciting opportunity and will leave inspired to put what they have learned into practice," wrote Harper, who will be making his second official visit to China later this year.In his speech to the dignitaries and public gathered for the opening ceremony, Liang Shugen, the Chinese Consul General in Vancouver, said it didn't matter who won medals during the competition as everybody participating was a winner."However, it is all the more important that your group build up friendship among the different peoples from different countries, so therefore I wish you all do your best and hope that through this competition you bring the friendship of the Chinese people, of the people from different countries, back to your home country and it is such a course that will be building a harmonious world."With participants representing countries and regions from North America, Europe, Australia, South America, Asia and all over China, which has competitors from 10 provinces, as well as Macau and Hong Kong, the eight-day tournament is providing an extensive overview of what Health Qigong is about.In addition to the two-day competition taking place over the weekend, there is also a referee clinic, a Duan examination and training sessions in the different Health Qigong disciplines, Yi Jinjing, Wu Qinxi, Liu Zijue and Ba Duanjin, among them.Ken Low, who is considered Mr Wushu in Canada, has been instrumental in organizing the Vancouver event. As the president of the Canada International Health Qigong Association he said people need to know about what's involved in the exercise and how it's different from traditional martial arts."It is more than fitness, it's actually mental and physical. It builds inner strength and it builds your, strengthens your joints and muscles and tendons, particularly in your neck area, your shoulders, your spine and your inner organs and your breathing and your focus," he said."So it's not a martial arts, although it is connected somewhat to martial arts because the movements have no self-defence meanings. All the movements are designed to enhance your health."One person who turned to the exercise for health reasons is Diane Hynes. A member of the 12-strong team representing the USA Health Qigong Association, the 50-year-old New Jersey native offers classes in Health Qigong with a cliental of students ranging from five to 84 years.She explained Qigong "helps refine that movement of our eternal energy and makes more as you breathe and move. It has to do with your breath, your ability to relax, bringing your mind to your heart and really moving it out, the energy out to the limbs. That's why it helps with sleep and stress."Hynes, who looked healthy and fit, said she realizes that she is influencing others who want to know what the mother of nine-year-old is doing to look good."And I'm not taking drugs to look well or having surgery," she said, adding the practice is destined to get bigger among westerners as the Baby Boomer generation ages and puts greater emphasis on health. ( "Medication can help for awhile but that takes from you as well, that takes from your energy. This just helps to build energy and move it in your body. Because the thing is, in Chinese medicine, it's about movement, everything's a flow and moving in a circle so it's a give and take."It's a movement and if you are not moving in harmony and you're stuck and stagnant then you are going to be uneasy or diseased or unwell. You're not necessarily sick but you're stuck."

WELLINGTON, July 29 (Xinhua) -- Scientists from around the world will gather on the east coast of New Zealand next week to discuss proposals to study "silent" earthquakes by drilling into the seabed.Silent quakes, also known as slow slip events, occur on the boundaries of the earth's tectonic plates, where one plate dives under another in areas known as subduction zones, and are slower than normal quakes, taking weeks or months to occur rather than seconds, and are rarely felt on the surface.About 70 scientists from 10 countries will convene in the city of Gisborne, which lies near the site of a major fault line and where scientists first identified silent earthquakes in 2002.Slow-slip events were first discovered with the advent of new measurement technologies on the west coast of Canada about 15 years ago and have since been recorded at about a dozen locations around the world, including four sites around New Zealand, said a spokesperson for New Zealand's Institute of Geological and Nuclear Sciences (GNS Science).About eight slow-slip episodes have occurred under Gisborne since 2002 at roughly two-year intervals.Scientists have proposed numerous theories to explain the phenomenon, but testing the theories is difficult as silent quakes happen many kilometers below ground."The best way to understand the true cause of slow-slip events is to drill into and sample the area on the plate boundary fault where they are known to occur, and monitor a whole range of physical and chemical properties at the plate interface," said Laura Wallace, of GNS Science.

BEIJING, June 21 (Xinhua) -- China will launch a new icebreaker for use during an upcoming 2013 polar expedition, a senior oceanic official said on Tuesday.Both the new icebreaker and Xuelong ("Snow Dragon"), an icebreaker that operated in Antarctica, will form an Arctic-Antarctic maritime research team."China will have at least two icebreakers concurrently operating at both the north and south poles," Chen Lianzeng, deputy director of the State Oceanic Administration, told a national conference on polar research, which has been the first since 1984 when the country started expeditions in polar regions.The new icebreaker will boast facilities that will allow it to research the oceanic environment, integrate data for real-time oceanic monitoring, deploy and retrieve detectors and conduct aerial studies using helicopters, Chen said.The two icebreakers will conduct expeditions in polar regions for more than 200 days annually, he said.Fixed-wing aircraft will also be added to the expedition team before 2015, allowing researchers to be transported between China's Zhongshan and Kunlun research stations and Antarctica's Grove Mountains.The Kunlun station went into operation in early 2009 as the first Chinese research station on Antarctica's inland. The Zhongshan station, established in 1989, now serves as a supply base for the Kunlun station.A written comment by Vice Premier Li Keqiang sent to the conference said the polar research, a magnificent feat of the mankind, has great significance for China's oceanic work and sustainable development."Over the past two decades, China's polar research made great achievements and became influential globally," Li said.Li encouraged Chinese scientists to actively participate in international exchanges and cooperation, safeguard national interests and contribute to the peaceful use of polar regions.Since the early 1980s, China has sent 27 Antarctic expedition teams and completed four research missions to the Arctic Ocean.Besides the Xuelong icebreaker, China has built three Antarctic stations -- Changcheng (Great Wall), Zhongshan and Kunlun -- and one Arctic station -- Huanghe (Yellow River) Station.

SAN FRANCISCO, Aug. 9 (Xinhua) -- Nokia is planning to stop selling its low-end phones and smartphones in the United States, instead focusing on products using Microsoft's Windows Phone platform, U.S. media reported on Tuesday.The Finnish handset maker will end sales of its low-end Series 40 phones and smartphones based on the Symbian mobile operating system in the United States and Canada, as it needs to put all of its efforts into the Windows Phone products which are due out later this year, Chris Weber, head of Nokia's U.S. subsidiary, told technology news site All Things Digital."When we launch Windows Phones we will essentially be out of the Symbian business, the S40 business, etc.," Weber said.Staff members speak to trade visitors at the Nokia booth at the CommunicAsia expo in Singapore June 21, 2011.In February, Nokia and Microsoft announced plans to form a broad strategic partnership, under which Nokia agrees to adopt Windows Phone as its principal smartphone strategy.North America is a priority for Nokia, Weber noted, in part because it is a key market for Microsoft and also because Nokia sees it as a key to winning in the smartphone battle globally."We'll develop for North America and make the phones globally available and applicable," Weber said.In another development, technology blog Engadget and other U.S. media on Tuesday reported that Nokia will not bring N9, its first smartphone running the Linux-based mobile operating system MeeGo, to the U.S. market."After the very positive reception to the launch of the Nokia N9, the product is now being rolled out in countries around the world. At this time we will not be making it available in the U.S., " Nokia said in a statement.

来源：资阳报