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CHICAGO, Jan. 20 (Xinhua) -- Chinese President Hu Jintao arrived here on Thursday afternoon from Washington, after meetings with U.S. President Barack Obama on major bilateral and world issues.During their talks Wednesday, the two leaders agreed to build a China-U.S. cooperative partnership based on mutual respect and mutual benefit.In Chicago, Hu will meet local officials and visit a high school, Chinese officials said.Chinese President Hu Jintao (R front) meets with Mayor of Chicago Richard Daley(L front) in Chicago, the United States, Jan. 20, 2011. Hu arrived in Washington Tuesday for a four-day visit to the United States. The trip, his second as head of state, is aimed at enhancing the positive, cooperative and comprehensive relationship between China and the United States.The Chinese president visited the United States in April 2006.

BEIJING, May 5 (Xinhua) -- A Chinese official has vowed to take every possible measure to ensure food safety in the country, saying the government has decided to launch national overhauls this year on sectors including milk products, cooking oil, health foods, meat and alcohol.Zhang Yong, director of the executive office of the food safety commission under the State Council, or Cabinet, said in an interview with Xinhua that the food and drinks in these five sectors are consumed in enormous quantities each day and they will do great harm and have an extensive social impact if a problem arises.Through special campaigns to overhaul these five sectors and by solving the most prominent problems, the government aims to accumulate experiences and create administrative systems in a bid to prevent food safety incidents and raise the overall level of food safety, Zhang said.The central government initiated a prolonged and stringent fight against the illegal use of additives in food last month, detailing measures to intensify supervision, upgrade safety limits, and increase penalties for violators.Vice Premier Li Keqiang warned of the great harm from illegal additives in food at a high-profile national meeting last month, promising a "firm attitude, iron-hand measures and more efforts" in dealing with the problem.Zhang Yong admitted "China is in a period when food safety incidents are likely to arise" since the country's food industry is on a fast track for development and a large number of food producers and catering operators are running their businesses in a small-scale or scattered way."It makes it more difficult for the government departments to conduct supervision on food quality and safety," Zhang said."We will take every possible measure to consolidate the feeble foundation to ensure food safety and curb food safety incidents as soon as possible," he said.According to Zhang, the government will also make efforts to improve supervision and emergency handling capabilities, raise the credibility and personnel quality of the involved enterprises, and severely punish violators.The Chinese government made the moves after a series of food safety scandals emerged despite the authorities' efforts to revamp the country's food industry. They included steamed buns dyed with unidentified chemicals, the use of "lean meat powder", also known as clenbuterol, a kind of fat-burning drug, as well as the use of illegal cooking oil known as "gutter oil."

WASHINGTON, April 6 (Xinhua) -- A study led by researchers at the University of Michigan (U-M) showed in animal studies that new cancer drug compounds they developed shrank tumors, with few side effects.The study, done in two mouse models of human cancer, looked at two compounds designed to activate a protein that kills cancer cells. The protein, p53, is inactivated in a significant number of human cancers. In some cases, it is because another protein, MDM2, binds to p53 and blocks its tumor suppresser function. This allows the tumor to grow unchecked. The new compounds block MDM2 from binding to p53, consequently activating p53."For the first time, we showed that activation of p53 by our highly potent and optimized MDM2 inhibitors can achieve complete tumor regression in a mouse model of human cancer," says lead study author Shaomeng Wang, director of the Cancer Drug Discovery Program at the U-M Comprehensive Cancer Center.Wang presented the study Wednesday at the American Association for Cancer Research 102nd annual meeting.Many traditional cancer drugs also activate p53 but they do so by causing DNA damage in both tumor cells and normal cells, causing side effects. These new MDM2 inhibitors activate p53 while avoiding the DNA damage common with other drugs. In this study, which was done in collaboration with Ascenta Therapeutics and Sanonfi-Aventis, researchers showed that these new drugs shrank tumors without significant side effects.Because p53 is involved in all types of human cancer, the new drug has potential to be used in multiple types of cancer. Further, the researchers also identified certain markers in tumors that predict which ones will be particularly sensitive to the MDM2 inhibitor, which would allow physicians to target the drug only to patients most likely to benefit.

SHANGHAI, May, 13 (Xinhua) -- Scientists attending a recent high-level conference on robotics agreed that great progress has been made in the field, but strict rules for the safe usage of robots should be implemented."Four years ago, if you went into a Chinese factory and said 'robots can help you work,' you would be kicked out. But now, China has a large industrial robot market, along with Japan, the Republic of Korea and the United States," says Li Zexiang, general chair of the 2011 International Conference on Robotics and Automation (ICRA 2011), which concluded Friday in Shanghai.Chinese robotics researchers have suggested to the government that rules and regulations for robot usage should be created. Professor Wang Tianmiao from the Beihang University (BUAA) told Xinhua about the suggestions during the conference.Wang says that in the future, it might not be possible for artificial intelligence to take the place of humans in some social roles. However, Wang says that mankind should pay close attention to the possible dangers of advancements in robotics, as the industry is currently undergoing dramatic changes.The five-day conference, which is organized by the Institute of Electrical and Electronics Engineers (IEEE), took place in China for the first time ever since its first session in 1984, which took place in the city of Atlanta in the United States.Media reports show that Japan, the Republic of Korea (ROK) and several Western countries have already drafted rules about the safe use of robots.

LOS ANGELES, March 5 (Xinhua) -- Law enforcement agencies are now using smart phones to track and arrest graffiti vandals in Los Angeles, a newspaper report said on Saturday.The graffiti-tracking program, spearheaded by the Tracking and Automated Graffiti Removal System, or TAGRS, allows graffiti- cleaning crews equipped with smart phones to photograph the markings and upload them to a Los Angeles Police Department (LAPD) database, the Los Angeles Times said.The photos are used to gather evidence for prosecution and restitution, the paper quoted city officials as saying.Once the graffiti suspects' identities are discovered, the information is added to the TAGRS database and may eventually uncover incidents involving the same suspects, the paper said.The LAPD launched a pilot project in 2009 in Van Nuys near Los Angeles, modeling its version on one run by the Orange County Sheriff's Department, according to the report.The program is now anchored at four LAPD stations, Van Nuys, Hollenbeck, Central and Harbor, said Mayor Antonio Villaraigosa's spokeswoman Casey Hernandez.Los Angeles spends about 10 million dollars a year cleaning up graffiti, Hernandez said.

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