梅州月经来到医院检查什么(梅州附件炎症的治疗) (今日更新中)

BEIJING, Aug. 24 (Xinhuanet) -- Facebook said it is overhauling its privacy settings to give members easier, more precise control over who sees posts, photos and other content over the vast social network.Starting Thursday, Facebook is rolling out new privacy tools that are placed with each piece of content, replacing options that are now buried in overall account settings.Privacy has been a consistently sticky problem for the Palo Alto firm, which has felt the heat from privacy advocates and government regulators. And recently, Facebook faced stiffer competition from Google's new Google+ social network, which was hailed for including a "circles" feature with easy-to-use privacy settings.Instead of vague labels such as "everyone," which have been mistaken for a Facebook member's social network instead of anyone on the Internet, the new system will include more precise words such as "public.""You have told us that 'who can see this?' could be clearer across Facebook, so we have made changes to make this more visual and straightforward," Chris Cox, Facebook's vice president of product, said in blog post."The main change is moving most of your controls from a settings page to being inline, right next to the posts, photos and tags they affect. Plus there are several other updates here that will make it easier to understand who can see your stuff (or your friends') in any context," Cox said.While privacy advocates reserved judgment until the new settings are actually released, they were optimistic the changes will benefit consumers."These changes do make me feel very confident in the direction that Facebook is going and the way they are thinking about privacy," said Erica Newland, policy analyst for the Center for Democracy & Technology in Washington, D.C.

WASHINGTON, June 6 (Xinhua) -- A new University of Missouri study shows that the exposure to the controversial chemical Bisphenol A (BPA) through diet has been underestimated by previous lab tests.The findings were published on Monday in Environmental Health Perspectives.In the study, researchers compared BPA concentrations in mice that were given a steady diet supplemented with BPA throughout the day, compared to the more common lab method of single exposure, and found an increased absorption and accumulation of BPA in the blood of the mice.The authors continuously exposed the mice to BPA through their feed, which is considered the primary route of exposure to this chemical in animals and humans. In previous studies examining the effects of BPA, mice were exposed to BPA only through a one-time administration.Following the exposure through the diet, a significantly greater increase in the active form of BPA, which is the greatest threat as it is the form that can bind to sex steroid receptors and exert adverse effects, was absorbed and accumulated in the animals."People are primarily and unknowingly exposed to BPA through the diet because of the various plastic and paper containers used to store our food are formulated with BPA," said Cheryl Rosenfeld, associate professor in biomedical sciences and corresponding lead author. "We know that the active form of BPA binds to our steroid receptors, meaning it can affect estrogen, thyroid and testosterone function. It might also cause genetic mutations. Thus, this chemical can hinder our ability to reproduce and possibly cause behavioral abnormalities that we are just beginning to understand."The study notes that more than eight billion pounds of BPA are produced every year, and more than 90 percent of people in the United States have measurable amounts of BPA in their bodies."When BPA is taken through the food, the active form may remain in the body for a longer period of time than when it is provided through a single treatment, which does not reflect the continuous exposure that occurs in animal and human populations," said Rosenfeld. "We need to study this further to determine where the ingested BPA becomes concentrated and subsequently released back into the bloodstream to be distributed throughout the body."

BEIJING, Sept. 6 (Xinhuanet) -- A short-term memory loss may suggest the Alzheimer's disease, according to a new study made by Spanish researchers.The finding was published on Monday, in Archives of General Psychiatry, an American Medical Association journal.The researchers gathered data of 116 people with mild cognitive impairment (MCI) who developed Alzheimer's disease within two years, 204 patients with the condition who didn't develop Alzheimer's and 197 people with no cognitive problems.Mild cognitive impairment is usually marked by difficulties with short-term memory, such as losing your train of thought repeatedly or having trouble remembering what you did yesterday, according to the study.After assessing them by biomarker tests and cognitive measures, the researcher found the cognitive markers can forecast the variance."Remarkably, they accounted for nearly 50% of the predictive variance," said Dr. Gomar of Centro de Investigation Biomedica en Red de Salud Mental, Barcelona, who led the research.Mild cognitive impairment at the start of the study was a stronger predictor of Alzheimer's than most biomarkers, the researchers concluded.

UNITED NATIONS, June 9 (Xinhua) -- Partners from UN agencies and governments, as well as civil society and the private sector gathered here Thursday to launch "Countdown to Zero: Global plan towards the elimination of new HIV infections among children by 2015 and keeping their mothers alive.""Governments and foundations that support this plan are saying: we treasure all life equally," said UN Secretary-General Ban Ki- moon, who spoke at the event. "We give all people the best possible chance. We provide health care to all who need it."This new plan, which was formulated by a Global Task Team of more than 30 governments and 50 international and national organizations, aims to bring the number of new HIV infections in children to zero by the middle of the decade and help their mothers survive.The launch of Countdown to Zero came on the sidelines of the UN High-Level Meeting on AIDS, which runs from June 8-10, and has been an opportunity for participants to take stock of gains made in combating the disease and to agree on a declaration that will direct the actions of member states to prevent and treat HIV/AIDS over the next five years.Ban told the audience at the launch that history has proven that it is possible to make great strides in fighting HIV/AIDS, with the right amount of effort and coordination."Let us not forget that some regions have nearly achieved no new infections from mother to child," he said. "If we push hard, as we have committed today, with your continued help and with the will to do what is right for the world, we can spread this success to mothers everywhere."According to the Joint UN Program on HIV/AIDS (UNAIDS), the rate of HIV/AIDS transmission from mother to child was been reduced by 26 percent from 2001 to 2009.Former U.S. President Bill Clinton, who spoke at the launch, said that he believes the time to eliminate HIV/AIDS in children is at hand."We are here because we all recognize that the time has finally come to end pediatric AIDS worldwide and we believe we can do it," he said. "We know we have the capacity to produce the medicine, we know that."Clinton emphasized the fact that HIV/AIDS is often prevalent in less developed countries. Sub-Saharan Africa remains the region that has the most HIV/AIDS infected people."There are still too many kids who are born HIV-positive," he said. "Just 22 countries account for 90 percent of those pediatric infections."He said that there are not only moral reasons for wealthier countries to help these nations by investing in their HIV/AIDS responses, but that by doing so they increase their soft power -- influence that utilizes non-coercive measures."I think its important in a world where no one wants to look weak and the military justifiably has a claim on all of our budgets, we not forget that what my secretary-of-state often refers to as soft power issues, they have a bigger impact on our long term security," Clinton said. "I think that accounts in no small measure for the presence of leaders of global corporations here at this meeting today, they know this as well."Collaboration and close coordination of responses to HIV/AIDS, Clinton said, is also essential."There are still too many places where HIV and maternal and child health groups work completely separately," he said. "That dramatically reduces the likelihood that mothers are their babies will receive the full range of care. We simply have to all work together, both within governments and all of those who are trying to help to ensure that mothers get the drugs they should and that their babies are born without the virus."Clinton said that Goodluck Jonathan, president of Nigeria, who gave a statement at the launch as well, is an excellent example of the "strong political leadership and personal commitment" necessary to defeat HIV/AIDS and reach to goals set by the Countdown to Zero plan.In his speech, Jonathan said that Africa is has banded together through the Abuja Declaration, adopted in 2001, which turned attention and resources towards public health problems on the continent, particularly HIV/AIDS."That declaration was to make African countries spend at least 15 percent of their budget on their health sector and a reasonable percentage of this would be geared towards HIV prevention and control," he said.Budgeting shortfalls for fighting HIV/AIDS in Africa must be accounted for, Jonathan said, as African countries must not rely solely on donors to fund their responses."I intend to explore in the coming months in collaboration with colleagues in sub-Saharan Africa an effective and creative funding mechanism to ensure ownership and long terms sustainability of the HIV and AIDS response in Africa," he said.

CANBERRA, Sept. 6 (Xinhua) -- A rare virus that can be contracted by humans has killed a large number of Victorian pigeons after being detected in the Australian state for the first time, Agriculture Department confirmed on Tuesday.According to the Australian Chief Veterinary Officer, Dr Mark Schipp, the avian paramyxo virus has already started killing some hobby birds, and threatens to spread to Victoria's chicken population.He said the affected birds have died suddenly in large numbers and have sometimes appeared tired or have shown neurological signs such as circling or head flicking before death.He added that the bug can also cause conjunctivitis or influenza-like symptoms in humans."The virus causes only mild, short-term conjunctivitis or influenza-like symptoms (in humans)," Australia Associated Press quoted Schipp as reporting on Tuesday."Human infection with this virus is extremely rare and usually occurs only in people who have close direct contact with infected birds."At this stage, there are no reports of the virus causing disease in wild birds, but the Australian Wildlife Health Network has been asked to monitor the situation.

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