福建猪解剖模型(广东透明男性躯干骨附主要动脉和神经分布模型) (今日更新中)

CHICAGO, Jan. 21 (Xinhua) -- Chinese President Hu Jintao left Chicago for home on Friday after concluding a four-day state visit to the United States, during which Hu and his U.S. counterpart Barack Obama agreed to build a China-U.S. cooperative partnership based on mutual respect and mutual benefit.President Hu, who began his visit on Tuesday, had extensive and in-depth discussions with Obama at the White House on Wednesday on major bilateral, regional and world issues.The two sides reached "important agreement on China-U.S. relations and major international and regional issues of shared interest," the Chinese president said when he and Obama met the press following their discussions."We both agree to further push forward the positive, cooperative and comprehensive China-U.S. relationship," Hu said, adding that both sides also pledged to forge "a China-U.S. cooperative partnership based on mutual respect and mutual benefit" for the benefit of the two countries and beyond.The Chinese president said he and Obama also discussed some disagreements in the economic and trade area, with both sides pledging "to continue to appropriately resolve these according to the principle of mutual respect and consultation on an equal footing."Also on Wednesday, Hu attended a state dinner and a welcome ceremony hosted by Obama.Hu told the Americans on several occasions in Washington that the purpose of his visit to the United States was "to increase mutual trust, enhance friendship, deepen cooperation and advance the positive, cooperative and comprehensive China-U.S. relationship for the 21st century."During Hu's visit, the two countries issued the "China-U.S. Joint Statement," which says "China and the United States committed to work together to build a cooperative partnership based on mutual respect and mutual benefit in order to promote the common interests of both countries and to address the 21st century's opportunities and challenges.""China and the United States are actively cooperating on a wide range of security, economic, social, energy, and environmental issues which require deeper bilateral engagement and coordination," the statement said.On Thursday, Hu called upon the U.S. Congress to continue helping the two countries boost their relations.Pursuing a healthy and steady development of China-U.S. ties is China's established policy and strategic choice, Hu stressed when meeting House Speaker John Boehner and Senate Majority Leader Harry Reid.Also on Thursday in Washington, Hu delivered an important speech at the welcome luncheon hosted by friendly organizations in the United States.To advance the sustained, sound and steady development of China-U.S. relations serves the fundamental interests of peoples of China and the United States, he said.

WASHINGTON, April 20 (Xinhua) -- Those childhood music lessons could pay off decades later -- even for those who no longer play an instrument -- by keeping the mind sharper as people age, according to a preliminary study published by the American Psychological Association (APA).The study recruited 70 healthy adults age 60 to 83 who were divided into groups based on their levels of musical experience. The musicians performed better on several cognitive tests than individuals who had never studied an instrument or learned how to read music, according to the research findings published Wednesday online in the APA journal Neuropsychology."Musical activity throughout life may serve as a challenging cognitive exercise, making your brain fitter and more capable of accommodating the challenges of aging," said lead researcher Brenda Hanna-Pladdy, a clinical neuropsychologist at the University of Kansas Medical Center. "Since studying an instrument requires years of practice and learning, it may create alternate connections in the brain that could compensate for cognitive declines as we get older."The three groups of study participants included individuals with no musical training; with one to nine years of musical study; or with at least 10 years of musical training. All of the participants had similar levels of education and fitness and didn' t show any evidence of Alzheimer's disease.All of the musicians were amateurs who began playing an instrument at about 10 years of age. More than half played the piano while approximately a quarter had studied woodwind instruments such as the flute or clarinet. Smaller numbers performed with stringed instruments, percussion or brass instruments.The high-level musicians who had studied the longest performed the best on the cognitive tests, followed by the low-level musicians and non-musicians, revealing a trend relating to years of musical practice. The high-level musicians had statistically significant higher scores than the non-musicians on cognitive tests relating to visuospatial memory, naming objects and cognitive flexibility, or the brain's ability to adapt to new information.The brain functions measured by the tests typically decline as the body ages and more dramatically deteriorate in neurodegenerative conditions such as Alzheimer's disease. The results "suggest a strong predictive effect of high musical activity throughout the lifespan on preserved cognitive functioning in advanced age," the study stated.Half of the high-level musicians still played an instrument at the time of the study, but they didn't perform better on the cognitive tests than the other advanced musicians who had stopped playing years earlier. This suggests that the duration of musical study was more important than whether musicians continued playing at an advanced age, Hanna-Pladdy says."Based on previous research and our study results, we believe that both the years of musical participation and the age of acquisition are critical," Hanna-Pladdy says. "There are crucial periods in brain plasticity that enhance learning, which may make it easier to learn a musical instrument before a certain age and thus may have a larger impact on brain development."The preliminary study was correlational, meaning that the higher cognitive performance of the musicians couldn't be conclusively linked to their years of musical study. More research is needed to explore that possible link.

BEIJING, Jan. 20 (Xinhua) -- China's Ministry of Land and Resources announced Thursday illegal buildings totaling 14.31 million square meters in floor space were demolished in an effort to crackdown on illegal use of land by local governments and enterprises.In the crackdown, the ministry also took control of buildings totaling 34.15 million square meters in floor space, and retrieved 43,000 mu of land, 37 percent of which is farm land, said Li Jianqin, an official from the ministry who is charge of enforcing laws and regulations on land use.Li said violations of land-use laws and regulations were widespread, especially those by local governments.According to him, a total of 2,582 people involved in such violations were handed over to judicial and disciplinary authorities in 2010, with 239 people prosecuted for criminal offenses.

BEIJING, March 17 (Xinhua) -- The People's Bank of China (PBOC), or the central bank, auctioned 50 billion yuan (7.61 billion U.S. dollars) of three-month bills at a yield of 2.7944 percent on Thursday, temporarily easing speculation of an approaching interest rate hike.The yield on three-month bills stood unchanged from last week at 2.7944 percent.Also, PBOC sold 60 billion yuan (9.13 billion U.S. dollars) worth of 91-day repurchase agreements to banks on Thursday with a yield of 2.8 percent.Offsetting the 181 billion yuan (27.55 billion U.S. dollars) of bills and repurchase agreements that matured, PBOC took 49 billion yuan (7.46 billion U.S. dollars) of liquidity out of the money market this week through open market operations on Tuesday and Thursday.Market analysts have been watching PBOC's open market operations closely this week as the yield of its one-year bill sold on Tuesday exceeded the benchmark interest rate of one-year deposits, which some analysts interpret as a reason for an imminent interest rate hike.Chen Lan, an analyst with Guotai Junan Securities, said higher yields on central bank bills would boost PBOC's ability to absorb liquidity from the market amidst the country's economic tightening efforts."But the hike of interest rates is not an imminent task for the central bank amid the slowdown of China's industrial investment in February, which weakened consumer confidence, and economic uncertainty overseas," Chen said.China's industrial value-added output grew 14.1 percent in the first two months of this year, the National Bureau of Statistics (NBS) announced on Friday.The growth rate during the first two months was up by 0.6 percentage points compared to that in December of last year, according to figures released by the NBS.Chen predicted that PBOC will reduce its frequency to raise banks' reserve requirement ratio in coming months but said the rate hike expectation would continue this year as the government is hoping to curb the red hot property market and soaring inflation.China's consumer price index (CPI), a main gauge of inflation, rose 4.9 percent year on year in February, adding more monetary tightening pressure to the government. 

来源：资阳报