中山便血的颜色(中山痔疮的最佳) (今日更新中)

BEIJING, Jan. 21 (Xinhua) -- Chinese leaders on Saturday offered festive greetings to people across the nation as well as overseas Chinese around the world at a gathering to mark the Lunar New Year that falls on Jan. 23.President Hu Jintao, top legislator Wu Bangguo, Premier Wen Jiabao and top political advisor Jia Qinglin attended the gathering, organized by the Central Committee of the Communist Party of China (CPC) and the State Council at the Great Hall of the People in Beijing.Hosting the gathering, Hu, also General Secretary of the CPC Central Committee, extended regards to Chinese people at home and abroad and foreign friends on behalf of the CPC Central Committee and the State Council, the Cabinet.Premier Wen delivered a speech at the gathering, saying that the country has made a good start to the Twelfth Five-Year Plan (2011-2015) at a time of an austere and complicated international economic situation.Wen said the government would maintain stable prices and steady, rapid economic development, accelerate the transformation of development patterns and adjust the economic structure in a bid to enhance sustainable development, as well as place more importance on people's livelihoods, letting the people share the achievements of reform."We are going to face bigger challenges in the new year," Wen said. "We have the will, determination, courage and ability to overcome any difficulties. We have confidence in the motherland's successful and bright future."Wen said the country will resolutely take the socialist road with Chinese characteristics, and promote economic growth and social progress, as well as improving people's livelihoods, and democracy, rule of law, equality and justice."We need to keep a clear head and thoroughly apply the scientific outlook on development, so to advance the reform and openning up policy and the socialist modernization construction.Wen called for excellent achievements in a bid to put the country on a firm footing for the upcoming 18th National Congress of the Communist Party of China.Other leaders, including Li Changchun, Xi Jinping, Li Keqiang, He Guoqiang and Zhou Yongkang, also attended the gathering.The Spring Festival, or the Chinese Lunar New Year, is the most important traditional festival for China.

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.

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.

BEIJING, Jan. 10 (Xinhua) -- Chinese State Councilor Dai Bingguo on Tuesday attended a reception at the Great Hall of People in Beijing celebrating the 20th anniversary of the establishment of diplomatic ties between China and five Central Asian countries.China successively established diplomatic relations with Uzbekistan, Kazakhstan, Kyrgyzstan, Tajikistan and Turkmenistan in early January of 1992.In his address, Dai said relations between China and the five nations have achieved comprehensive and significant progress since they forged diplomatic ties 20 years ago, featuring frequent high-level visits, deepened political mutual trust, mutual support on major issues of each other's concern and expanded mutually beneficial cooperation in various fields.China and the five countries have maintained close coordination within the framework of the United Nations and the Shanghai Cooperation Organization and have positively contributed to safeguarding and promoting the world's peace, stability and development, he said.Noting China and the Central Asian nations are good neighbors, good friends and good partners, Dai said, no matter how the international situation changes, China will adhere to the policy of building friendship and partnership with its neighbors and support the five nations to independently choose their development path.China will unswervingly advance traditional friendship and cooperation with the five nations and will work with them to make unremitting efforts for building a harmonious world of lasting peace and common prosperity, he said.Dai said China will take the opportunity of celebrating the 20th anniversary to increase political mutual trust, expand mutually beneficial cooperation and develop traditional friendship with the five nations, in the hope of jointly creating a bright future for their relations.Li Xiaolin, president of the Chinese People's Association for Friendship with Foreign Countries, and diplomatic envoys from the five Central Asian nations also addressed the reception.

SAN FRANCISCO, Oct. 5 (Xinhua) -- Google announced Wednesday that Google Earth, the tech giant's virtual globe, map and geographical information program, has been downloaded more than one billion times since it was first introduced in 2005.According to Google's official blog, there have been more than one billion downloads of the Google Earth desktop client, mobile apps and the Google Earth plug-in. To celebrate the milestone, Google is aggregating all the interesting ways people have used Google Earth around the world and posting them on "www. OneWorldManyStories.com.""We never imagined our geospatial technology would be used by people in so many unexpected ways," said Google in the blog post.Google Earth maps the Earth by images obtained from satellite imagery, aerial photography and GIS (geographic information system) 3D globe. It also has versions of Moon, Mars and Sky, enabling users to see images and videos of the planets and distant galaxies.It is currently available in Google Earth, a free version with limited function, as well as Google Earth Pro and Google Earth Enterprise, subscription services with additional features intended for commercial use.

来源：资阳报