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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.

LOS ANGELES, May 11 (Xinhua) -- U.S. researchers have found MRSA (methicillin-resistant Staphylococcus aureus) in meats sold at U.S. supermarkets, according to a study published on Wednesday.This is "community-acquired MRSA" that is transmitted by humans carrying the bacteria, researchers at Wayne State University in Detroit reported in the study appearing in the May 11 online edition of the U.S. Centers for Disease Control and Prevention's ( CDC's) journal Emerging Infectious Diseases.For the study, the researchers purchased 289 raw meat samples, including 156 beef, 76 chicken and 57 turkey samples, from 30 grocery stores in Detroit from August 2009 through January 2010.The researchers found that 22.5 percent of the samples were contaminated with S. aureus and six samples tested positive for MRSA.Of the six samples contaminated with MRSA, two were beef, three were chicken and one was turkey, the researchers said.The extent of MRSA contamination in meat varies by the type of meat and where the meat was processed, said lead researcher Yifan Zhang, an assistant professor in the department of nutrition and food science at the university.The germ is apparently being introduced by humans handling the meat, she said.According to another recent study, the strain of MRSA in meat in the United States is not the strain found in animals, Zhang noted."MRSA has always been found in human patients, but we found this in retail meat, so retail meat can be a reservoir of these bugs," said Zhang."When people handle food, they can get the bugs from the meat if the meat is already contaminated," she explained.The risk of becoming infected is especially high if you have open cuts or sores on your hands or skin, Zhang added.MRSA is common in hospitals and nursing homes, where it can cause serious illness and even death.But recently "community-acquired MRSA" has become a problem among some high school and college athletes who share equipment.This type of MRSA appears as a skin infection and is usually less serious, according to CDC.MRSA is killed when the meat is cooked thoroughly, experts say.Other precaution measures include:-- Wear gloves when handling meat, especially when there are wounds on the hands;-- Washing plates or utensils used to prepare food before using them again to eat; and-- Disinfect counters that have come into contact with meats.

WASHINGTON, April 25 (Xinhua) -- A class of drugs that shows promise in breast and ovarian cancers with BRCA gene mutations could potentially benefit colorectal cancer patients with a different genetic mutation, a new study from the University of Michigan Comprehensive Cancer Center finds.Working in cell lines from colorectal cancer patients, researchers found that the class of drugs called PARP inhibitors worked against tumors with mutations in the MRE11 gene.About 15 percent of all colorectal cancers have what's called microsatellite instability, a type of error in the DNA. About 82 percent of those tumors have the MRE11 gene mutation."This is a potential broader application for PARP inhibitors, beyond breast and ovarian cancer. This is a class of drug that's already shown safety in early clinical trials and now might benefit some colorectal cancer patients as well," says lead study author Eduardo Vilar-Sanchez, a hematology/oncology fellow at the university, in a statement.The study, which was published Monday in Cancer Research, also found that PARP inhibitors are even more effective when both copies of MRE11 were mutated. Each person carries two copies of each gene, which means mutations can occur in either one or both copies. The researchers suggest that PARP inhibitors could be targeted specifically to colorectal cancer patients who have two copies of the mutated gene.Researchers are planning a phase I clinical trial to look at using PARP inhibitors in colorectal cancer patients with two mutated copies of MRE11. Future trials are being considered using PARP inhibitors to prevent colorectal cancer and other cancers in people with Lynch syndrome whose tumors have this mutation.Microsatellite instability is also seen in prostate cancer and endometrial cancer, suggesting potential for PARP inhibitors to play a role in additional types of cancer as well, Vilar-Sanchez says, adding that more research is needed in these areas.

SAN FRANCISCO, April 25 (Xinhua) -- Yahoo Inc. on Monday announced that it has acquired IntoNow, a startup company whose technology can let users almost instantly recognize TV content and share favorite programs with their friends.IntoNow has built a technology platform that can automatically identify live television content and any previously aired U.S.- based television programming in the past five years.It also offers an application for iPhone and other devices running Apple's iOS operating system, which can help users connect and engage with their friends around the shows they love.With the application, users can find out what their friends are watching and engage in discussion through their favorite social networks, or discover what shows they have in common with others and which of them are on air right now."Relying on social channels as a means for discovering content - - whether it's on a PC, mobile device, or TV -- is rapidly on the rise," Bill Shaughnessy, Yahoo's senior vice president of product management and product marketing, said in a statement."IntoNow's technology combines the ability to check-in to what a consumer is watching, engage in conversations, and find related content," he added.In a post on its company blog, Yahoo noted that the addition of IntoNow will enhance its video programming, and bolster its social engagement across the Yahoo network and on all screens.IntoNow, headquartered in Palo Alto in the U.S. state of California, was only launched in January 2011 and now has seven employees.Yahoo didn't disclose terms of the purchase. Technology blog TechCrunch reported that Yahoo paid between 20 million to 30 million U.S. dollars, citing sources with knowledge of the deal.

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Academy of Sciences in the U.S. on Monday.Scientists used a technique called "x-ray crystallography" to reveal the molecular structure of proteins, which work as atom-sized "wires" discharging excess electricity."This is an exciting advance in our understanding of how some bacterial species move electrons from the inside to the outside of a cell," said lead author Tom Clarke of the University of East Anglia's School of Biological Sciences in Norwich, England.He said this discovery means "We can now start developing efficient 'bio-batteries' as the viable energy source in the future."Still, it could take perhaps a decade to go. Before that, existing uses of such bacteria needed to become 100 or 1,000 times more efficient, he said.The advance could also hasten the development of microbe technology that can help clean up oil or uranium pollution, he said.Microbes might in future be enlisted to clean up nuclear accidents such as Japan's Fukushima Daiichi disaster, he added.