四川恒牙立体模型(宁夏人肝小叶模型(3部件)) (今日更新中)

UNITED NATIONS, June 8 (Xinhua) -- Marking 30 years of the HIV- AIDS pandemic, scores of heads of state and government and ministers took to the UN General Assembly podium on Wednesday to list their country's accomplishments and list challenges in the battle.The General Assembly High Level Meeting on AIDS is taking place 10 years after the UN Special Session on HIV/AIDS and also marks five years since signing of the Political Declaration in which UN member states committed to moving towards universal access to HIV prevention, treatment, care and support.UN Secretary-General Ban Ki-moon UN recalled how three decades ago AIDS was spreading while "Today, we have a chance to end this epidemic once and for all."Now, instead of fear, there is hope, he said."Today, HIV is on a steep decline in some of the most affected countries. Countries like Ethiopia, South Africa, Zambia and Zimbabwe," he said. "They had the largest epidemics in the world, and they have cut infection rates by one quarter.""Globally, more than 6 million people now get treatment," Ban said. "All of these advances come thanks to you and the commitments you made, first 10 years ago and then again in 2006. Today, the challenge has changed. Today, we gather to end AIDS."However, President Joseph Deiss of the General Assembly said 10 million people still have no access to treatment and far too many people were still being infected, adding it was necessary to continue complementary and closely-linked prevention, treatment, care and support measures."We have reached a critical moment in time," he said. "We must take a holistic approach and integrate the response to AIDS into broader development programs."Michel Sidibe, executive director of the Joint UN Program on HIV/AIDS (UNAIDS), recalled how 30 years the disease was called the gay plague and slime disease. People were afraid of each other and there was no hope."This image should not disappear. It is part of our history," he said.Sidibe said the AIDS movement was the story of a people breaking the conspiracy of silence, demanding equity and dignity, confronting societies'wrongs, seizing their rights, and making a passionate call for social justice. Since then, a compact had been made between the global North and the South, which had produced lifesaving results.Now, More than 6.6 million people are being treated in low- and middle- income countries, he said, pointing out that since the initial success stories in Uganda and Thailand 56 countries, including 36 in Africa, have been able to stabilize the epidemic and reduce the number of infections significantly.Infections have been reduced by 35 percent in South Africa and by more than half in India, the UNAIDS chief said. In China, the HIV mortality rate had fallen by 64 percent, Sidibe said. Many other countries had reached universal access to treatment.He voiced what was repeated several times, and that was a call for "a transformational agenda" of "zero infections, zero discrimination and zero AIDS-related deaths."To put a personal face on the disease, a woman from Ukraine openly living with HIV, Tetyana Afansiadi, told her story to the delegates.She told how she had been living with HIV and using drugs for 13 years, had hepatitis C for almost 11 years but now has a husband and an 8-year-old son. Neither have HIV.Three years ago she took part in a drug therapy program that has enabled her to live, work, and take care of her son."Drug dependency and HIV-infection require treatment, not prosecution," she said.Given that opioid substitution therapy in her home city had changed the lives of people like her, it was time to stop refusing antiretroviral treatment to people who used drugs.While the heads of states and government and ministers, usually those heading up health departments, spoke in the General Assembly hall under bright lights, scores more of delegates attended five panel sessions and about 40 individual side events.Some samplings from the spotlighted dark-green podium in the great hall:President Paul Kagame of Rwanda, said, "It is time to galvanize member states to commit to a transformative agenda that overcomes the barriers to an effective, equitable and sustainable response to HIV and AIDS."Jose Angel Cordova Villalobos, health minister of Mexico, called for states to implement friendly, non-discriminatory healthcare systems as well as sex education in order to prevent the spread of HIV/AIDS."To achieve this, we call to all the countries congregated here today in order that your actions are based in the framework of respect to the human rights and focusing on gender equity, that allow to consolidate an effective response to the HIV/AIDS without stigmas, discrimination, homophobia, transphobia; as well as any type of violence," he said, referring, in part, to transsexuals.The vice president of Mauritius, Monique Bellepeau, said, "The adverse impact of the AIDS epidemic on the socioeconomic progress, particularly in the developing countries, dictates that there is no time for complacency."She added, "After wrestling with AIDS for the past three decades, we are today equipped with a vast body of knowledge and various new tools to urgently complete the task. No less than strict prevention efforts and universal access to treatment, care and support are required."The speeches continue Thursday and on the final day of the three-day meeting, UN member states are expected to adopt a declaration to guide country responses to HIV over the next five years.

WASHINGTON, Aug. 4 (Xinhua) -- Observations from NASA's Mars Reconnaissance Orbiter have revealed possible flowing water during the warmest months on Mars, the U.S. National Aeronautics and Space Administration (NASA) announced Thursday.Dark, finger-like features appear and extend down some Martian slopes during late spring through summer, fade in winter, and return during the next spring. Repeated observations have tracked the seasonal changes in these recurring features on several steep slopes in the middle latitudes of Mars' southern hemisphere."The best explanation for these observations so far is the flow of briny water," said Alfred McEwen of the University of Arizona, Tucson.McEwen is the principal investigator for the orbiter's High Resolution Imaging Science Experiment and lead author of a report about the recurring flows to be published in Friday's edition of the journal Science.Seven such sites on the planet have been confirmed, with 20 more possible, McEwen said."What makes these new observations so interesting is they occur at much lower latitudes where temperatures are much warmer and where it's actually possible for liquid water to exist," said Arizona State University geophysicist Phil Christensen, one of the scientists who studied the images beamed back from the orbiter.The study does not prove water exists, but identifies it as the best explanation. It's worthwhile to think about alternative reasons for these observations, but none seems to fit as well as briny water, McEwen said."I think it's going to be laboratory experiments on Earth that give us the best confirmation or refutation," he said.

TAIYUAN, May 29 (Xinhua) -- Parents of children with cerebral palsy are going to have a place to turn for help, as the first public foundation to provide aid has been set up in northern Shanxi Province.The Brain Rehabilitation Fund was established on Saturday by the China Population Welfare Foundation (CPWF), which is headquartered in Beijing. The CPWF will cooperate with the Shanxi Cerebral Palsy Hospital, which specializes in curing the brain disease with therapies such as acupuncture and massage.Lan Ye, the deputy secretary general of the CPWF, said the fund aims to relieve the burden of affected families by providing financial assistance and training so parents are able to do the therapy at home. In addition, the fund hopes to reduce the incidence of cerebral palsy by publicizing preventative measures to thwart the disease.More than 6 million suffer from cerebral palsy in China, and among them more than 2 million are children, said Guo Xinzhi, vice president of the Shanxi's Federation of the Disabled."A family needs to spend more than 500,000 yuan (77,000 U.S. dollars) to cure a child with the disease," Guo said. "As 70 percent of the children with cerebral palsy are from poor, mountainous areas, more than 25.7 percent of families cannot afford to pay the medical expenses."On Saturday, 25 parents from Xinjiang Uygur Autonomous Region, Fujian, Henan and Shanxi provinces came to the hospital for free training on helping their children to recover at home.

XIAMEN, July 23 (Xinhua) -- A rescue and breeding base for endangered Chinese white dolphins started a trial operational period on Saturday in the southeastern seaside resort of Xiamen. The base is the first of its kind in the country.The base, located on the city's Huoshaoyu Islet, includes a rescue center and a breeding area and can accommodate up to four to six white dolphins, said Pan Shijian, vice mayor of Xiamen.Previously, rescuers had to return injured white dolphins back to the sea after giving them simple medical treatment due to the lack of a rescue base, Pan said."From now on, the base will be a hospital for injured or stranded dolphins," he said.The base will also be used as a rehabilitation center for children with infantile autism and brain paralysis, with the dolphins acting as "doctors" during the children's recovery period, he added.The Chinese white dolphin mainly lives in the seas around Xiamen and the Pearl River estuary in south China. The dolphins are under first-class state protection.The Chinese Academy of Fishery Sciences estimates that about 2,000 of the dolphins are living in China's seas.

BEIJING, Aug. 30 (Xinhua) -- China's second moon orbiter, the Chang'e-2, has arrived in outer space about 1.5 million km away from Earth and is now orbiting the second Lagrange Point (L2), where gravity from the sun and Earth balances the orbital motion of a satellite, Chinese scientists said Tuesday.Chang'e-2 entered L2's orbit at 11:27 p.m. last Thursday after spending 77 days traveling away from its previous orbital path around the moon, according to the State Administration of Science, Technology and Industry for National Defence (SASTIND).The SASTIND said that China is now the world's third country or organization to successfully put a spacecraft into orbit around L2, after the European Space Agency (ESA) and the National Aeronautics and Space Administration (NASA) of the United States.The Chang'e-2 orbiter will carry out exploration activities around L2 in the coming year, SASTIND said.There are five so-called "Lagrange Points" about 1.5 million km way from the Earth in the exact opposite direction from the sun. Putting a spacecraft at any of these points allows it to stay in a fixed position relative to the Earth and sun with a minimal amount of energy needed for course correction.The orbiter completed all of its assigned tasks after blasting off on Oct. 1, 2010, according to the SASTIND. Although the orbiter was only supposed to remain in space for six months, the SASTIND decided to assign additional tasks to it, as it still had fuel in its reserve tanks.Traveling into outer space from the moon's orbit was one of the orbiter's most important missions, according to the SASTIND.Before arriving at its current position in outer space, the Chang'e-2 took photos of the northern and southern poles of the moon. It then descended to a lower orbit, approximately 15 km away from the moon's surface, where it captured high-resolution images of the Sinus Iridum, or "Bay of Rainbows," an area where future moon probes may land.The SASTIND is reportedly planning to launch measure and control stations into outer space by the end of the second half of next year. The Chang'e-2 will be used to test the two stations' functionality at that time.China's ambitious three-stage moon mission will include a moon landing, as well as the launch of a moon rover during the second stage, which is scheduled to take place in 2012. During the third phase, another rover will land on the moon and return to Earth with lunar soil and stone samples for scientific research around 2017.China does not currently have a timetable in place for a manned moon landing. It launched its first lunar probe, the Chang'e-1, in October 2007.In 2003, China became the third country after Russia and the United States to send a human into space. Two more manned space missions followed, the most recent of which took place in 2008.0 The Chang'e probes are named after the Chinese legendary goddess of the moon.

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