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BEIJING, April 12 (Xinhuanet) -- The elderly have a difficult time with multi-tasking as a study suggests that older brains behave differently when it comes to switching between two tasks, according to media reports on Tuesday.Researchers used functional magnetic resonance imaging (FMRI) to analyze brain activity in 20 people over age 60 by asking them to contemplate outdoor photos shown briefly. Then the elderly were presented with the picture of a face and asked to determine its gender and age, before being asked to recall details from the original scene they viewed.Researchers then compared their results to a similar experiment with 20 younger adults and found the brains of older subjects were less capable of disengaging from the interruption and reestablishing the neural connections necessary to switch back to focusing on the original memory."Unlike younger individuals, older adults failed to both disengage from the interruption and re-establish functional connections associated with the disrupted memory network," write Wesley C. Clapp of the University of California, San Francisco, and colleagues in the Proceedings of the National Academy of Sciences.The study, published in the online edition of the journal Proceedings of the National Academy of Sciences, sheds new lights into a growing body of studies showing that one's ability to move from one task to another in quick succession becomes more difficult with age.

GUIYANG, Jan. 30 (Xinhua) -- Chen and her mentally handicapped son moved into their newly finished home last December. Shortly afterwards, a month-long cold wave with heavy snow hit their hometown, as well as the majority of southern China.It would have been "terrible" to stay in the old home in such cold weather, said 66-year-old Chen Houlian, a villager from the Tongzi County of southwestern China's Guizhou Province.Dropping temperatures and occasional sleet were predicted before this year's lunar New Year festival, which begins next Thursday.Behind the new home stood their old adobe cottage, with visible cracks on the clay walls. Wooden doors and window frames of that cottage were covered with black smoke due to more than 40 years of indoor cooking, while those of the new house were painted bright blue.In fact, the old house might collapse after the heavy snow, according to Jin Jing, deputy head of the County.Chen's family was one of the poorest in town. The farmland they grew crops on barely produced enough corn and cabbage to meet their needs, while the minimum living subsistence allowance of 2,200 yuan (334 U.S. dollars) each year was their total annual income.They would never be able to afford to build a new home on their own without receiving financial aid from a government project, Jin added.Chen's new house cost over 40,000 yuan. They received 20,000 yuan from the project and 5,000 from the local federation of people with disability. The rest was borrowed from relatives and neighbors.Five pairs of red couplets were posted by each door and window to express their gratitude to all the people who had offered help.On the day they moved in, Chen held an outdoor banquet for the entire village using borrowed money to mark the happiest event this family had witnessed for many decades.The government-funded project was launched over two years ago, after a deadly snow storm hit southern China during Jan-Feb 2008, collapsing nearly half a million rural houses and causing damage to another 1.7 million.The project was designed to provide funds to residents living in dilapidated buildings in impoverished rural regions so they might renovate or build new homes.In Guizhou alone, over 600,000 families had finished building new homes by the end of 2010 with help from that project, as over 4.7 billion yuan was allocated to subsidize this building.The project was part of China's efforts to build its social-security-based housing system, which also includes affordable housing, low-rent housing and public rental housing programs to meet the needs of low-income people amid surging property prices across the country.

LUQA, Malta, Feb. 28 (Xinhua) -- Four chartered planes of China Eastern Airlines left Malta Monday, taking home 1,115 Chinese nationals evacuated from Libya. The forth Airbus A340 plane with 275 evacuees on board took off from the Malta International Airport at about 08:40 p.m. local time (1940GMT), bringing the total number of Chinese nationals back home from Malta to 2,223.The flight CES 266 with 275 Chinese nationals on board flew to Beijing while the other three will land in Shanghai, according to Chinese Embassy in Malta.Three chartered flights are expected on Tuesday, the embassy said.In the past 48 hours, three chartered cruise ship with 4,800 Chinese evacuees have reached Valletta, capital of Malta.

GENEVA, May 3 (Xinhua) -- Roughly half to three quarters of adults aged between 18 to 65 years have had headache in the last year, a prevalent problem that went under-treated, the Geneva based World Health Organization (WHO) said in a report issued Tuesday.The report, named "Of Headache Disorders and Resources in the World 2011," regarded headache disorders as one of the most prevalent disorders of mankind.WHO estimated over 10 percent of the adult population suffered from migraine, and 1.7 to 4 percent of them were troubled frequently by headache on 15 or more days every month.Among all cases studied, the report said, on average only 10 percent were treated by neurologists, and the rates were even lower in Africa and South-East Asia.Three types of headache disorders were underlined as the most frequently seen, including migraine, tension-type headache and that caused by medication-overuse.The report concluded that given the very high indirect costs of headache, investment in health care related to headache treatment might be overall cost-saving to society.

来源：资阳报