伊宁预约妇科检查(伊宁专业治疗尿道炎的医院) (今日更新中)

WASHINGTON, Nov. 8 (Xinhua) -- Children with autism have more brain cells and heavier brains compared to typically developing children, according to a study to be published on Wednesday in the Journal of the American Medical Association.The small, preliminary study provides direct evidence for possible prenatal causes of autism.The prefrontal cortex is involved in various higher order functions such as language and communication, social behavior, mood, and attention. Children who have autism tend to show deficits in such functions.Eric Courchesne, of the University of San Diego School of Medicine Autism Center of Excellence, and colleagues conducted direct counts of brain cells in specific regions of the prefrontal cortex in postmortem brains of seven boys who had autism and six typically developing males, ranging in age from 2-16 years. Most participants had died in accidents, but the researchers did not base their selection on causes of death.The researchers found that children with autism had 67 percent more neurons in the prefrontal cortex and heavier brains for their age compared to typically developing children. Since these neurons are produced before birth, the study's findings suggest that faulty prenatal cell birth or maintenance may be involved in the development of autism. Another possible factor that may contribute to the neuronal excess is a reduction in apoptosis, or programmed cell death, which normally occurs during the third trimester and early postnatal life.Though small, this preliminary study examined all relevant postmortem tissue available at the time. The relative scarcity of tissue from very young children may limit future research as well, but efforts to include a larger number of samples are needed to confirm these findings and to identify patterns of age-related changes in autism, the researchers say."Earlier studies of head circumference and early brain overgrowth have pointed us in this direction, but there have been few quantitative neuroanatomical studies due to the lack of postmortem tissue from children with autism," said Thomas Insel, director of the National Institute of Mental Health, in a statement. "These new results, along with an earlier study reporting altered wiring of the prefrontal cortex, focus our attention on this critical area of the brain in autism."

NAIROBI, Nov. 15 (Xinhua) -- The UN refugee agency said on Tuesday there has been an outbreak of cholera in Dadaab, the world's largest refugee camp in Kenya, which is believed to have started among new arrivals who had most likely acquired it in Somalia or en route to the camp.The UN High Commissioner for Refugees (UNHCR) said the situation in Dadaab, home to Somalis fleeing famine and conflict, is being exacerbated by heavy rains and accompanying risks of waterborne diseases."Rains and flooding had affected the trucking of water to parts of the camps, and we fear some refugees resorted to using unsafe water from flooded areas," the UN refugee agency said in a statement released in Nairobi.According to UNHCR, there are now 60 cases in the camps, including 10 laboratory-confirmed cases and one refugee death. To manage the outbreak, UNHCR and partners have set up cholera treatment centres for severe cases, it said.The UN agency deplored insecurity which it said continues to affect aid efforts more than a month after the kidnapping of three aid workers in Kenya's Dadaab refugee complex.The UNHCR says insecurity is still hampering aid efforts in the area, despite the deployment of 100 Kenyan policemen in the last month.UNHCR is assisting them with vehicles, shelter and telecommunications equipment."Together with our partners, we are exploring options to gradually resume full operations despite continued security incidents in and around Dadaab. In the meantime, refugees are still receiving life-saving aid, namely food, water and health care," it said.According to the agency, most cases can be managed through oral rehydration solutions (ORS) that can be given at home or at the health posts."We are working with UNICEF and the Ministry of Health to train health workers in the community-based management of diarrhoea so that patients can begin treatment at home," it said.UNHCR said it has increased levels of chlorine, which kills cholera-causing bacteria, at water points in the camps. These, it said, are monitored to make sure they are maintained at the correct levels."We are also promoting hygiene practices among the refugees, especially the use of latrines and hand washing with soap. Each refugee received 250 grams of soap with the latest food distribution and this will continue monthly for several months," UNHCR said.Dadaab is home to more than 400,000 registered refugees, nearly all of them Somali, with an estimated 70,000 people having arrived in July and August as conditions in their homeland rapidly deteriorated.

SAN FRANCISCO, Dec. 2 (Xinhua) -- About one in 10 mobile phone subscribers in the United States is now using an Apple iPhone, said a new survey released on Friday.Latest survey results from research firm comScore showed that for the three-month period ending in October, Apple remained the No. 4 handset maker in the U.S. with its share of mobile subscribers rising to 10.8 percent from 9.5 percent in the previous three months.Among the top five mobile phone brands in the U.S. market, Apple is the only one that saw its market share increase in the quarter, according to the survey.Samsung was still the top handset manufacturer with 25.5 percent of U.S. mobile subscribers, followed by LG and Motorola taking the second and third place with 20.6 percent and 13.6 percent of share respectively.Research in Motion (RIM), maker of Blackberry, ranked No. 5 with a share of 6.6 percent.Except Apple, market shares of the other four brands remained unchanged or dropped from the previous quarter.Apple's gain in the quarter might be driven by the introduction of new model iPhone 4S which went on sale on Oct. 14, and the addition of Sprint as a carrier in the U.S. market, some analysts said.The survey by comScore, which involved more than 30,000 U.S. mobile subscribers, found that 234 million Americans age 13 and older used mobile devices by the end of October.

SAN FRANCISCO, Oct. 17 (Xinhua) -- Apple on Monday announced that it has sold more than four million of its new iPhone 4S, three days after the launch last Friday."IPhone 4S is off to a great start with more than four million sold in its first weekend--the most ever for a phone and more than double the iPhone 4 launch during its first three days," said Philip Schiller, Apple's senior vice president of worldwide product marketing.In addition, more than 25 million customers are already using iOS 5, the latest version of the mobile operating system powering Apple's mobile devices, since it was released last Wednesday; and more than 20 million customers have signed up for iCloud, the cloud service designed to store and sync data for download to multiple devices, said the company in the statement.The iPhone 4S, which looks the same as the iPhone 4, has major hardware upgrade inside, including a faster chip, a higher- resolution camera and Siri intelligent voice control.Last Friday, AT&T and Sprint, two iPhone wireless carriers in the United States, said they have seen record daily sales with the launch of the iPhone 4S.The lasted Apple smartphone is currently on sale in the U.S., Canada, France, Germany, Japan and Britain, and will be available in 22 more countries on Oct. 28. Apple said the phone will be on sale in more than 70 countries and regions by the end of this year.

BEIJING, Jan. 19 (Xinhua) -- A senior official of the Communist Party of China (CPC) on Thursday extended festival greetings to members of the judiciary and police officers of Beijing, ahead of the country's Lunar New Year which falls on Jan. 23.Zhou Yongkang, secretary of the Committee of Political and Legislative Affairs of the CPC Central Committee, met with traffic police, firefighters, armed policemen, prosecutors and judges, prison guards, and families of police officers who died on duty.He urged the judiciary and police to give top priority in 2012 to maintaining social stability in the capital in the run-up to the CPC's 18th national congress.Zhou Yongkang (R front), a member of the Standing Committee of the Political Bureau of Communist Party of China (CPC) Central Committee and also secretary of the CPC Central Political and Legislative Affairs Committee, shakes hands with an armed policeman on duty at a troop station in Beijing, capital of China, Jan. 19, 2012. Zhou visited traffic police, firefighters, armed policemen, justices and procurators, jail police, and families of policemen who died on duties in Beijing on Thursday and extended festival greetings to them ahead of the Lunar New Year, which falls on Jan. 23 this year.He also noted the judiciary and police have completed tasks with honor over the past year, making great contributions to the stability of Beijing and the entire country.Zhou, also a member of the Standing Committee of the Political Bureau of the CPC Central Committee, expressed his appreciation to those armed police on duty during Spring Festival.While visiting a district-level court and procuratorate, Zhou urged staff of the judiciary to attach great importance to providing services, so to improve public confidence in the country's justice system.During his visit to Beijing's fire command headquarter, Zhou urged officers to be high on alert during Spring Festival, to prevent disastrous accidents and ensure the city's residents have a safe and happy holiday.

来源：资阳报