焦作表面血管结扎止血模型(莱芜肺段模型) (今日更新中)

BEIJING, Oct. 12 (Xinhuanet) -- Study found that women who took multivitamins may actually be at risk, media reports on Wednsday.Women who took the dietary supplements vitamin B6, folic acid, magnesium, zinc, copper, iron and multivitamins had a higher risk of death than women who did not.The new study, published in the Archives of Internal Medicine, examined more than 38,000 women aged 55 and older who took part in the Iowa Women's Health Study, which started in the mid 1980s. Researchers found the vitamins did nothing to reduce the risk of death and that most supplements have no positive effect on women's health.The study did not distinguish if the women in the study took the vitamins to fight diseases or to maintain health.Vitamin experts say the best way to make sure you are getting all necessary vitamins is to eat a well-balanced diet. The vitamins people take do not  depend on personal preference.

BEIJING, Oct. 11 (Xinhuanet) -- Debates in the medical field developed on Monday as a U.S. government panel recommended that men of all ages should stop getting prostate cancer blood screenings.The United States Preventive Services examined all the evidence and found little if any reduction in deaths from routine P.S.A. screening and suggested that the test does more harm than good to healthy men.The P.S.A. test for prostate cancer, a blood test to screen for a protein that may indicate cancer, has become widely used because it can help detect tiny tumors at a very early sta ge, when they are theoretically most treatable.Unfortunately, according to the task force, the vast majority of the results are false-positives: the men don’t actually have cancer. And most of those found to have cancerous cells would not suffer ill effects because their cancer is so slow-growing that it would not cut short their lives. Those with faster-growing cancers may also not be helped if the cancer is extremely aggressive.After the recommendation came out last week, many prostate cancer specialists have been pushing back.Urologist Dr. Mark DeGuenther said this recommendation is more about saving money than saving lives. He said death rates from prostate cancer have dropped 40 percent since men began getting screened at age 40 and he says it will save taxpayers and patients more money in the long run to diagnose and treat cancers earlier rather than wait and have to provide expensive care for advanced stage cancers."We all agree that we've got to do a better job of figuring out who would benefit from P.S.A. screening," said Dr. Scott Eggener, a prostate cancer specialist at the University of Chicago. "But a blanket statement of just doing away with it altogether ... seems over-aggressive and irresponsible."Dr. Deepak Kapoor, chairman and chief executive of Integrated Medical Professionals, which includes the nation's largest urology practice, said "We will not allow patients to die, which is what will happen if this recommendation is accepted."That task force's recommendation isn't final - it's a draft open for public debate. And obviously the debate is already under way.

BEIJING, Nov. 28 (Xinhuanet) -- Many parts of the United States are planning to offer free HIV tests for people on Dec. 1 in honor of World AIDS Day, according to media report Monday.Officials in Washington will provide free HIV tests at area-based food stamp offices, Medicaid offices, and government assistance offices.U.S. WMCA Health Services is to offer free Rapid HIV testing to all from 8 a.m. to 4 p.m. on Dec. 1, 2011 at their office at 179 Lisbon Street, Lewiston, Maine. People getting an HIV test can get their results in 20 minutes from the confidential testing. Free chlamydia and gonorrhea testing will also be offered for all woman age 26 and under and all men.They can either call the clinic to make an appointment or walk to the office directly for free testing. They also have chances to get food, giveaways and gift cards if they get there early.More than 40 vendors are expected to take part in the second annual World AIDS Day hosted by the Lake County Health Department on Dec. 1. The free event will begin from noon and be over at 4 p.m. at Donnelly Park, 530 N. Donnelly St. in Mount Dora, Florida. World AIDS Day is a global campaign to end AIDS and help bring awareness of the disease worldwide.

BEIJING, Jan. 6 (Xinhua) -- Surveillance data on the size and frequency of earthquakes in Antarctica collected by China's Great Wall Station show that the continent is not earthquake-free, a Chinese seismic expert said Thursday."China's newly-built seismic observatory in Great Wall Station has documented a hundred-odd earthquakes occurring in the region over the past year," said Chang Lijun, a member of China's 28th Antarctic expedition team.The discovery challenges the prevailing notion that the Antarctic has no earthquakes, as many earthquakes have gone undetected due to lack of seismological observation in the region.However, thanks to technological advances, scientists have discovered that the continent is still subject to some minor tremors.Chang, also an associate researcher at China Earthquake Administration's Geophysics Institute, said last year's earthquakes ranged in magnitude from 0.5 to 4, scales which are usually undetectable to common people.The tectonic movements of Antarctica, which sits on two plates that pulled away from each other in the northern Ross Sea between 28 and 40 million years ago, but later converged, fascinate geologists worldwide.At the end of 2010, Chinese scientists set up a new broadband seismic observatory in Great Wall Station, greatly increasing China's ability to measure tremors and tectonic movements on the continent.

BEIJING, Jan. 5 (Xinhua) -- Chinese media organizations on Thursday unveiled the top 10 domestic and international news events of 2011.The selection of news events, the eighth of its kind in China, was jointly carried out by 46 major online media providers, including people.com.cn and Xinhuanet.com.The following are the top 10 domestic news events of 2011:-- China launched a series of tough government measures to cool off the property market, including higher mortgage rates, a ban on third-home mortgage loans and purchase restrictions. The State Council, or China's Cabinet, introduced a policy package urging enhanced efforts to ensure the healthy development of the property sector and to promote the construction of affordable housing units for low-income families.-- More than 90 central government departments publicized their 2010 and 2011 spending on government-funded overseas travel, receptions and official cars upon an order issued after an executive meeting of the State Council in May.-- China's amended Criminal Law criminalized all drunk driving incidents starting May 1. The previous law imposed criminal penalties on drunk drivers only when they caused serious traffic accidents.-- Food safety scandals erupted in great number in 2011. Authorities busted farmers for adding clenbuterol, a known carcinogen, to pig feed in order to grow leaner pigs.-- In a speech delivered on July 1 at a ceremony marking the 90th founding anniversary of the Communist Party of China (CPC), Hu Jintao, general secretary of the CPC Central Committee, hailed the Party's achievements and stressed efforts for the future development of the country and the Party.-- On July 23, a high-speed train rammed into a stalled train near the city of Wenzhou in the eastern province of Zhejiang, leaving 40 dead and 191 injured.-- The launch and safe return of the Shenzhou-8 unmanned spacecraft marked the successful completion of China's first space docking mission, with the spacecraft docking with the Tiangong-1 space lab module.-- A gathering was held on Oct. 9 to commemorate the 100th anniversary of China's 1911 Revolution, which ended 2,000 years of imperial rule in the country by toppling the Qing Dynasty.-- The 17th Central Committee of the CPC concluded its sixth plenary session in October, adopting a landmark guideline for improving the nation's cultural soft power and promoting Chinese culture. The CPC Central Committee also pledged enhanced efforts to promote the healthy and positive development of Internet culture.-- Ethics and morality were heavily discussed in the public sphere, with two incidents stoking debate. In July, a woman in east China's city of Hangzhou caught a two-year-old girl who plunged from the window of a 10th-floor apartment, winning praise from people across the country. However, in late August, a bus driver in east China's Jiangsu province stopped to save an old woman who was hit by a three-wheeled vehicle, only to find himself held accountable for the accident.The following are the top 10 international news events of 2011:-- Strong turbulence was encountered by several countries in western Asia and northern Africa.-- On March 11, a 9.0-magnitude earthquake struck Japan and triggered a huge tsunami, killing over 15,000 people and causing radioactive leaks from several reactors at the Fukushima Daiichi nuclear power plant.-- On May 1, U.S. Navy commandos killed al-Qaida leader Osama Bin Laden in a cross-border raid at Abbotabad.-- On July 10, Rupert Murdoch's News International company closed its News of the World tabloid after it was accused of hacking the mobile phones of dead crime victims to access saved messages.-- With the world economy staggering under the European and U.S. debt crises, the Occupy Wall Street movement was launched on Sept. 17, protesting corruption and greed in the financial sector.-- Apple co-founder and longtime Chief Executive Officer Steve Jobs passed away in October at the age of 56 after years of fighting pancreatic cancer.-- On March 19, NATO launched airstrikes in Libya to impose a no-fly zone under a UN Security Council resolution. On Oct. 20, Libya's former leader Muammar Gaddafi was killed as his hometown of Sirte fell to rebel forces.-- A report published by the UN Population Fund showed that the world's population reached 7 billion on Oct. 31, 2011.-- On March 7, U.S. credit rating agency Moody's Investors Service downgraded the credit rating of the Greek sovereign debt to B1, marking the start of the European sovereign debt crisis and worsening the economic situation in the eurozone.-- Kim Jong Il, the top leader of the Democratic People's Republic of Korea (DPRK), died on Dec. 17, 2011 from "a great mental and physical strain."

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