In collaboration with the National University of Mexico, a team of Spanish researchers has analysed for the first time remains of cosmetics in the graves of prehispanic civilisations on the American continent. In the case of the Teotihuacans, these cosmetics were used as part of the after-death ritual to honour their city's most important people. A research team from the Polytechnic University of Valencia and the University of Valencia has studied various funerary samples found in urns in the Teotihuacan archaeological site (Mexico) that date from between 200 and 500 ...

AUDIO: Melanie Hingle, Ph.D., MPH, RD, University of Arizona, discusses the effectiveness of using text messaging to engage adolescents in ‘‘conversations’’ about health using a familiar communication method -- that is... Click here for more information. Philadelphia, PA, January 9, 2013 – According to the Nielsen consumer research group, teens receive an average of 3,417 text messages per month (that's 114 texts per day!). Couple this with CDC's report that high school students' ...

The key to giving whole wheat bread a more appetizing aroma and taste may lie in controlling the amounts of a single chemical compound that appears in the bread, which nutritionists regard as more healthful than its refined white counterpart. That's the finding of a new study in ACS' Journal of Agricultural and Food Chemistry, which opens the door to making whole wheat bakery products more appealing to millions of people. Devin G. Peterson and colleagues explain that whole wheat flour includes all three layers of the grain — bran, germ and endosperm — while refined flour ...

Scientists are reporting development of chemical modules that can reproduce, on an "unprecedented" molecular level, changes and interactions that occur in natural populations of plants and animals, including those of hunting and being hunted for food, conducting mutually beneficial relationships and competing for resources. The report on these new "predator-prey biochemical oscillators," which could become building blocks for molecular machines and computers, appears in ACS Nano. Yannick Rondelez and Teruo Fujii explain that just as plants and animals interact in complex ...

This press release is available in German. Aggregations of the red and black colored firebugs are ubiquitous under linden trees in Central Europe, where the bugs can reach astounding population densities. While these insects have no impact on humans, their African, Asian, and American relatives, the cotton stainers, are serious agricultural pests of cotton and other Malvaceous plants. Researchers at the Max Planck Institute for Chemical Ecology in Jena, Germany, recently discovered that these bugs need bacterial symbionts to survive on cotton seeds as their sole food source. ...

To plant food, insect repellant and other homespun uses for spent coffee grounds, scientists are adding an application that could make the gunk left over from brewing coffee a valuable resource for production of dietary supplements. Their new report in ACS' Journal of Agricultural and Food Chemistry concludes that used coffee grounds are a rich source of healthful antioxidant substances. Maria-Paz de Peña and colleagues explain that people around the world drink millions of cups of coffee every day, generating about 20 million tons of used grounds annually. Although some ...

URBANA – What are you doing to keep your relationship alive? A University of Illinois study highlights the importance of five relationship maintenance strategies that couples can use to preserve or improve the quality of an intimate relationship. "Relationships are like cars in that you have do certain things to keep them running, especially when your goal is to strengthen and preserve your bond with your partner," said Brian Ogolsky, a U of I professor of human and community development. To determine which factors are the most important in promoting healthy relationships, ...

This press release is available in German. Whether a quantum object behaves like a wave or like a particle depends (according to the Copenhagen interpretation) on the choice of measurement apparatus used for observing the system, and therefore on the type of measurement performed. Anton Zeilinger's team of physicists at the University of Vienna and the Austrian Academy of Sciences has recently taken this phenomenon further than ever. Whether a certain photon behaves like a particle or like a wave depends on the measurement performed on a second photon. In the ...

Mention magnets, and most people think of trivial applications of those pieces of metal, like holding family photos and reminder notes on the refrigerator. An article on magnets in the current edition of Chemical & Engineering News (C&EN), however, focuses on the critical role magnets play in the real world and the search for new materials to make them. C&EN is the weekly newsmagazine of the American Chemical Society, the world's largest scientific society. In the article, C&EN Senior Correspondent Mitch Jacoby explains that magnets are crucial to an enormous number of ...

New Rochelle, NY, January 9, 2013—More than 85,000 synthetic chemicals are registered for commercial use with the U.S. Environmental Protection Agency (EPA), and only about half of those produced in large quantities are tested for their potential toxic effects on humans. Children are particularly vulnerable to environmental toxins and a detailed look at how and why, and what can be done to protect children's health, is presented in a two-part article published in Alternative and Complementary Therapies from Mary Ann Liebert, Inc., publishers. The articles are available ...

Tree seeds, rather than biomass or fuel crop plants, could represent an abundant source of renewable energy, according to research published in the International Journal of Automotive Technology and Management. The study suggests that seeds from the Indian mahua and sal trees have almost as good a thermal efficiency as biodiesel but would produce lower emissions of carbon monoxide, waste hydrocarbons and NOx (nitrogen oxides). Sukumar Puhan of the GKM College of Engineering and Technology and colleagues N. Vedaraman and K.C. Velappan of the Central Leather Research Institute, ...

PITTSBURGH—Self-moving gels can give synthetic materials the ability to "act alive" and mimic primitive biological communication, University of Pittsburgh researchers have found. In a paper published in the Jan. 8 print edition of the Proceedings of the National Academy of Sciences, the Pitt research team demonstrates that a synthetic system can reconfigure itself through a combination of chemical communication and interaction with light. Anna Balazs, principal investigator of the study and Distinguished Professor of Chemical and Petroleum Engineering in Pitt's Swanson ...

WINSTON-SALEM, N.C. – Jan. 9, 2013 – New research from Wake Forest Baptist Medical Center shows that patients suffering from aggressive brain tumors can be effectively treated with smaller radiation fields to spare the rest of the brain and preserve cognition. "For patients with glioblastoma, we now know we can safely and effectively treat them with smaller radiation fields to spare the rest of their normal brain," said lead investigator Michael D. Chan, M.D., assistant professor of radiation oncology at Wake Forest Baptist. "That's important because it lessens the symptoms ...

Alexandria, Va.–January 9, 2013– America Speaks, Volume 13, a compilation of public opinion polls commissioned by Research!America, features timely data about Americans' views on issues related to biomedical and health research. A majority of Americans (72%) say the new Congress and the President should take action to expand medical research within the first 100 days of the 113th Congress. Public support for increased government spending on medical research holds particular relevance as Congress considers whether to further delay, eliminate or permit "sequestration," a ...

When researchers at Moffitt Cancer Center and colleagues conducted a random telephone survey among blacks, whites and Hispanics in New York, Baltimore and San Juan, Puerto Rico, they found that Hispanics are nearly twice as likely to report that fear of being used as a "guinea pig" and lack of trust in medical professionals contribute in being unwilling to participate in cancer screenings. The researchers concluded that health care providers need to do a better job of instilling trust and dispelling certain fears, particularly among Hispanics, to improve cancer screening ...

AUGUSTA, Ga. – As we age, it just may be the ability to filter and eliminate old information – rather than take in the new stuff - that makes it harder to learn, scientists report. "When you are young, your brain is able to strengthen certain connections and weaken certain connections to make new memories," said Dr. Joe Z. Tsien, neuroscientist at the Medical College of Georgia at Georgia Regents University and Co-Director of the GRU Brain & Behavior Discovery Institute. It's that critical weakening that appears hampered in the older brain, according to a study in ...

CHAMPAIGN, Ill. — Negative media coverage may prompt firms to engage in greater levels of strategic change than previously thought, according to research by a University of Illinois business professor. While businesses have typically viewed the news media as a megaphone for publicity, businesses have not viewed the media as an influential stakeholder capable of shaping the strategic decisions of key executives, says Michael K. Bednar, a professor of business administration at Illinois. "As the news media reports negatively about firms, that registers with executives," ...

WASHINGTON — On average, Americans die sooner and experience higher rates of disease and injury than people in other high-income countries, says a new report from the National Research Council and Institute of Medicine. The report finds that this health disadvantage exists at all ages from birth to age 75 and that even advantaged Americans -- those who have health insurance, college educations, higher incomes, and healthy behaviors -- appear to be sicker than their peers in other rich nations. "We were struck by the gravity of these findings," said Steven H. Woolf, professor ...

Two robots equipped with instruments designed to "listen" for the calls of baleen whales detected nine endangered North Atlantic right whales in the Gulf of Maine last month. The robots reported the detections to shore-based researchers within hours of hearing the whales (i.e., in real time), demonstrating a new and powerful tool for managing interactions between whales and human activities. The team of researchers, led by Woods Hole Oceanographic Institution (WHOI) scientists Mark Baumgartner and Dave Fratantoni, reported their sightings to NOAA, the federal agency responsible ...

HOUSTON -- (Jan. 9, 2013) -- Rice University scientists have found that mutations of small effect can turn out to be game changers in the bacterial fight against antibiotic drugs. The discovery came during an exhaustive, three-year effort to create a mathematical model that could accurately predict how specific mutations allow bacteria like E. coli to adapt to antibiotics like minocycline. The findings are detailed in a Dec. 10 study in the Proceedings of the National Academy of Sciences. "As biologists, we tend to focus on big effects that result from big changes, ...

SAN DIEGO – New research suggests that drinking sweetened beverages, especially diet drinks, is associated with an increased risk of depression in adults while drinking coffee was tied to a slightly lower risk. The study was released today and will be presented at the American Academy of Neurology's 65th Annual Meeting in San Diego, March 16 to 23, 2013. "Sweetened beverages, coffee and tea are commonly consumed worldwide and have important physical—and may have important mental—health consequences," said study author Honglei Chen, MD, PhD, with the National Institutes ...

Washington, DC — Seniors who have spoken two languages since childhood are faster than single-language speakers at switching from one task to another, according to a study published in the January 9 issue of The Journal of Neuroscience. Compared to their monolingual peers, lifelong bilinguals also show different patterns of brain activity when making the switch, the study found. The findings suggest the value of regular stimulating mental activity across the lifetime. As people age, cognitive flexibility — the ability to adapt to unfamiliar or unexpected circumstances ...

Cold Spring Harbor, NY – "Although mortality from many cancers has been steadily falling, particularly those of the blood [i.e., leukemias], the more important statistic may be that so many epithelial cancers (carcinomas) and effectively all mesenchymal cancers (sarcomas) remain largely incurable." With these words as preface, Nobel laureate James D. Watson, Ph.D., in a newly published paper that he regards "among my most important work since the double helix," sets forth a novel hypothesis regarding the role of oxidants and antioxidants in cancers that are currently ...

CHICAGO – In a two year randomized trial, patients with symptomatic knee osteoarthritis who received vitamin D supplementation did not have a significant difference in knee pain or cartilage volume loss compared to patients who received placebo, according to a study appearing in the January 9 issue of JAMA. "Knee osteoarthritis (OA) is a common age-related musculoskeletal disorder that has significant functional impact and has considerable societal costs through work loss, early retirement, and arthroplasty. Despite its impact, there are no medical treatments established ...

CHICAGO – In an examination of the effectiveness of cefixime, the only oral cephalosporin antimicrobial recommended for treatment of Neisseria gonorrhoeae (gonorrhea) infections, researchers found a clinical treatment failure rate of nearly 7 percent for patients treated at a clinic in Toronto, according to a preliminary study published in the January 9 issue of JAMA. "Because of Neisseria gonorrhoeae resistance to all prior first-line antimicrobial agents, cephalosporin [antibiotic] therapy with adjuvant azithromycin or doxycycline is recommended for treatment of gonorrhea," ...