南昌哪个医院看忧郁障碍好(南昌医院忧郁症治疗) (今日更新中)

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. 7 (Xinhua) -- The funeral for Apple co-founder Steve Jobs, who died Wednesday at the age of 56, is taking place on Friday, U.S. media reported.The funeral is termed as a small private gathering, The Wall Street Journal quoted a person familiar with the matter as saying.The source would not disclose where or when the event was taking place, citing respect for Jobs and his family's privacy.Apple said it has no public services planned for Jobs. In an e- mail sent to Apple staff on Wednesday, Chief Executive Officer Tim Cook said "a celebration of Steve's extraordinary life" would be held soon for employees.On its website, Apple has encouraged people to send their memories and condolence to a special e-mail address.Meanwhile, online magazine deadling.com reported Friday that Sony Pictures is making a hefty deal to acquire feature rights to "Steve Jobs," the only authorized biography of the Apple co- founder which will be published on Oct. 24.

COPENHAGEN, Oct. 1 (Xinhua) -- Denmark implemented a tax on foods high in saturated fat from Saturday, the first of its kind in the world, which will affect products containing more than 2.3 percent saturated fat.Butter, cream, cheese, meat, cooking oil and processed foods like pizza and dark chocolate are among thousands of products affected. The so-called fat tax is pegged at 16 Danish kroner (2.87 U.S. dollars) per kilo of saturated fat.Thus, a 250-gram packet of butter, which previously cost 15.5 Danish kroner (2.78 dollars), will now cost 18.10 Danish kroner (3.25 dollars). And the cost of a liter of olive oil has risen from 38.95 Danish kroner (7 dollars) to 41.60 Danish kroner (7.48 dollars), for example.Some Danes began hoarding the affected products ahead of Saturday's deadline, while stores across Denmark rushed to mark-up prices of these goods.Although the new tax will mean higher costs for consumers and many food product manufacturers, the Danish government believes the tax is a good way of reducing Danes'consumption of fatty foods.Local producers are worried the tax will give an unfair advantage to manufacturers from neighboring countries who, they say, can now sell their products more cheaply in the Danish market.However, tax authorities here said imported food products will also be subject to the tax.

BEIJING, Nov. 7 (Xinhuanet) -- A huge asteroid will pass closer to Earth than the moon on Tuesday, but experts say there is no cause for alarm.Asteroid 2005 YU 55 will pass about 300-thousand kilometers from the earth. The giant space rock is about 400 meters in diameter. The close encounter will occur at 23:28 Greenwich Mean Time. Computer models showing the asteroid’s path for the next 100 years show there is no chance it will hit Earth during that time.Previous studies show the asteroid is what is called a C-type asteroid that is likely made of carbon-based materials and some silicate rock.

WASHINGTON, Dec. 7 (Xinhua) -- Drugs that affect the levels of an important brain protein involved in learning and memory reverse cellular changes in the brain seen during aging, according to an animal study published Wednesday in the Journal of Neuroscience. The findings could one day aid in the development of new drugs that enhance cognitive function in older adults.Aging-related memory loss is associated with the gradual deterioration of the structure and function of synapses (the connections between brain cells) in brain regions critical to learning and memory, such as the hippocampus.Recent studies suggested that histone acetylation, a chemical process that controls whether genes are turned on, affects this process. Specifically, it affects brain cells' ability to alter the strength and structure of their connections for information storage, a process known as synaptic plasticity, which is a cellular signature of memory.In the current study, Cui-Wei Xie, of the University of California, Los Angeles, and colleagues found that compared with younger rats, hippocampi from older rats have less brain-derived neurotrophic factor (BDNF) -- a protein that promotes synaptic plasticity -- and less histone acetylation of the Bdnf gene. By treating the hippocampal tissue from older animals with a drug that increased histone acetylation, they were able to restore BDNF production and synaptic plasticity to levels found in younger animals."These findings shed light on why synapses become less efficient and more vulnerable to impairment during aging," said Xie, who led the study. "Such knowledge could help develop new drugs for cognitive aging and aging-related neurodegenerative diseases, such as Alzheimer's disease," she added.

来源：资阳报