In diagrams it looks like a confection of self-curling ribbon with bits of bling hung off the ribbon here and there. In fact it is a carefully designed ring of proteins with attached pigments that self-assembles into a structure that soaks up sunlight. The scientists who made it call it a testbed, or platform for rapid prototyping of light-harvesting antennas–structures found in plants and photosynthesizing bacteria–that take the first step in converting sunlight into usable energy. The antennas consist of protein scaffolding that holds pigment molecules in ideal positions ...

Satellite imagery showed that Tropical Storm Pewa has passed Wake Island on Aug. 21. GOES-West satellite imagery showed Pewa moving farther into the northwestern Pacific. Tropical Storm Pewa continues trekking through the open waters of the Northwestern Pacific Ocean today, and was captured on NASA satellite imagery. On Aug. 21 at 1500 UTC, Tropical Storm Pewa had maximum sustained winds near 35 knots/40.2 mph/64.8 kph. Pewa is a small storm, and tropical-storm-force winds extend from the center up to 65 miles. It was centered near 20.9 north latitude and 170.4 east ...

West Orange, NJ. August 21, 2013. The July issue of the Journal of Spinal Cord Medicine focuses on, "Advances in Technology for People with Spinal Cord Injury." Guest Editor Rory Cooper, PhD, is a member of the journal's Editorial Board. Dr. Cooper is the FISA/PVA Endowed Chair and a Distinguished Professor of the Department of Rehabilitation Science and Technology, School of Health and Rehabilitation Sciences, University of Pittsburgh. He is also the Center Director at the Center of Excellence for Wheelchair and Related Technology, VA Rehabilitation Research & Development ...

(Boston) – The prevalence of obesity has increased markedly in the U.S. in recent years. According to a new study by researchers from Boston University Slone Epidemiology Center's Black Women's Health Study (BWHS), the risk of becoming obese among young African-American women decreased with increasing levels of vigorous activity. The investigators focused on younger women because most weight gain occurs before middle age. The findings are online and will appear in the September 2013 issue of the American Journal of Preventive Medicine. The assessment of exercise in ...

Therapeutic drug substitutions have the potential to double or even triple annual cost savings compared with savings achieved with generic substitutions, according to O. Kenrik Duru and colleagues from the University of California, Los Angeles. Therapeutic drug substitutions involve the use of less expensive substitutes that are not equivalent but have a similar treatment effect as the original medication. Their work¹ estimates the magnitude of potential savings with drug substitution in Medicare Part D plans in the US. The study appears in the Journal of General Internal ...

COLUMBUS, Ohio – New research shows that in a dynamic mind-body interaction during the interpretation of prolonged stress, cells from the immune system are recruited to the brain and promote symptoms of anxiety. The findings, in a mouse model, offer a new explanation of how stress can lead to mood disorders and identify a subset of immune cells, called monocytes, that could be targeted by drugs for treatment of mood disorders. The Ohio State University research also reveals new ways of thinking about the cellular mechanisms behind the effects of stress, identifying ...

Pasadena, CA— A team of astronomers from three institutions has developed a new type of telescope camera that makes higher resolution images than ever before, the culmination of 20 years of effort. The team has been developing this technology at telescope observatories in Arizona and now has deployed the latest version of these cameras in the high desert of Chile at the Magellan 6.5m (21 foot) telescope. Carnegie's Alan Uomoto and Tyson Hare, joined by a team of researchers from the University of Arizona and Arcetri Observatory in Italy, will publish three papers containing ...

MADISON, Wis. – By any measure, tuberculosis (TB) is a wildly successful pathogen. It infects as many as two billion people in every corner of the world, with a new infection of a human host estimated to occur every second. Now, thanks to a new analysis of dozens of tuberculosis genomes gathered from around the world, scientists are getting a more detailed picture of why TB is so prevalent and how it evolves to resist countermeasures. Writing today (Aug. 21, 2013) in the journal Public Library of Science (PLoS) Pathogens, a team led by University of Wisconsin-Madison ...

Researchers in India have carried out a data mining exercise to determine which are the most important risk factors in increasing the chances of an individual suffering a heart attack. Writing in the International Journal of Biomedical Engineering and Technology, they confirm that the usual suspects high blood cholesterol, intake of alcohol and passive smoking play the most crucial role in "severe", "moderate" and "mild" cardiac risks, respectively. Subhagata Chattopadhyay of the Camellia Institute of Engineering in Kolkata adds that being male aged between 48 and 60 ...

Astronomers at the University of Arizona, the Arcetri Observatory near Florence, Italy and the Carnegie Observatory have developed a new type of camera that allows scientists to take sharper images of the night sky than ever before. The team has been developing this technology for more than 20 years at observatories in Arizona, most recently at the Large Binocular Telescope, or LBT, and has now deployed the latest version of these cameras in the high desert of Chile at the Magellan 6.5-meter telescope. "It was very exciting to see this new camera make the night sky ...

ATHENS, Ohio (Aug. 21, 2013)—New Ohio University research suggests that the rise of an early phase of the Appalachian Mountains and cooling oceans allowed invasive species to upset the North American ecosystem 450 million years ago. The study, published recently in the journal PLOS ONE, took a closer look at a dramatic ecological shift captured in the fossil record during the Ordovician period. Ohio University scientists argue that major geological developments triggered evolutionary changes in the ancient seas, which were dominated by organisms such as brachiopods, corals, ...

MINNEAPOLIS – New research suggests that chronic traumatic encephalopathy (CTE), a brain disease associated with repeat brain trauma including concussions in athletes, may affect people in two major ways: initially affecting behavior or mood or initially affecting memory and thinking abilities. The study appears in the August 21, 2013, online issue of Neurology®, the medical journal of the American Academy of Neurology. CTE has been found in amateur and professional athletes, members of the military and others who experienced repeated head injuries, including concussions ...

On August 21, 2013 at 1:24 am EDT, the sun erupted with an Earth-directed coronal mass ejection, or CME, a solar phenomenon that can send billions of tons of particles into space and reach Earth one to three days later. These particles cannot travel through the atmosphere to harm humans on Earth, but they can affect electronic systems in satellites and on the ground. Experimental NASA research models, based on observations from NASA's Solar Terrestrial Relations Observatory show that the CME left the sun at speeds of around 380 miles per second, which is a fairly common ...

During its five-year primary mission, NASA's Fermi Gamma-ray Space Telescope has given astronomers an increasingly detailed portrait of the universe's most extraordinary phenomena, from giant black holes in the hearts of distant galaxies to thunderstorms on Earth. But its job is not done yet. On Aug. 11, Fermi entered an extended phase of its mission -- a deeper study of the high-energy cosmos. This is a significant step toward the science team's planned goal of a decade of observations, ending in 2018. "As Fermi opens its second act, both the spacecraft and its instruments ...

While the 138,000-acre Silver Fire still smoldered, forest restoration specialists were on the job. They analyzed maps created using Landsat satellite data to determine where the burn destroyed vegetation and exposed soil – and where to focus emergency restoration efforts. "The map looked like a big red blob," said Penny Luehring, the U.S. Forest Service's Burned Area Emergency Response and watershed improvement program leader, based in Albuquerque, N.M. Red means high-severity fire, she explained – and the red areas were concentrated in a watershed drainage that fed ...

Food and biofuel crops could be grown and maintained in many places where it wasn't previously possible, such as deserts, landfills and former mining sites, thanks to an inexpensive, non-chemical soil additive. The additive, a simple mixture of organic waste, such as chicken manure, and zeolite, a porous volcanic rock, could be used to support agriculture in both the developed and developing world, while avoiding the serious environmental consequences associated with the overuse of chemical fertilisers. The mixture permits a controlled release of nutrients, the regulation ...

Prison inmates who receive general education and vocational training are significantly less likely to return to prison after release and are more likely to find employment than peers who do not receive such opportunities, according to a new RAND Corporation report. The findings, from the largest-ever meta-analysis of correctional educational studies, suggest that prison education programs are cost effective, with a $1 investment in prison education reducing incarceration costs by $4 to $5 during the first three years post-release. "We found strong evidence that correctional ...

Efforts to promote interdisciplinary research that addresses complex interactions between humans and their environment have become commonplace in recent years, but success is often elusive. To better understand the obstacles facing natural and social scientists attempting such work, Eric D. Roy of Louisiana State University and seven coauthors from a variety of institutions surveyed researchers at all career stages who were interested and experienced in such research. Roy and his coauthors report their findings in the September issue of BioScience. The 323 respondents, ...

A new paper co-written by UM associate professor Mark Hebblewhite details ecological changes caused by a loss of Arctic sea ice. The paper concludes that the loss of sea ice obviously will impact the marine food web and the marine mammals that depend on sea ice habitat. Other major ecological changes in adjacent land-based habitats and species also will occur because of warming oceans. The findings were published in the Aug. 2 issue of Science magazine. Wildlife species like the polar bear are symbolic of how animals are vulnerable to loss of sea ice. Other wildlife ...

(SACRAMENTO, Calif.) — More than 20,000 people in Pakistan are being tested for the potentially deadly stage of tuberculosis using a new strategy developed at UC Davis Health System to effectively detect the disease in children for the first time. At least 600 million people in Pakistan, India and Bangladesh are infected with the tuberculosis bacterium Mycobacterium tuberculosis. Each year at least three million people reach the potentially deadly stage called active TB. The condition is treatable with antibiotics, but conventional tests inevitably miss more than one ...

Powerful x-rays can now be used to rapidly and accurately detect gold in ore samples, thanks to a new technique developed by CSIRO – a move that could save Australia's minerals industry hundreds of millions of dollars each year. CSIRO has conducted a pilot study that shows that gamma-activation analysis (GAA) offers a much faster, more accurate way to detect gold than traditional chemical analysis methods. This will mean mining companies can measure what's coming in and out of their processing plants with greater accuracy, allowing them to monitor process performance ...

Access to safe drinking water is a step closer to being a reality for those in developing countries. A study paves the way for the next generation of portable water purification devices, which could provide relief to the 780 million people around the world who face every day without access to a clean water supply. An international team of researchers – led by Associate Professor Hui Ying Yang from Singapore University of Technology and Design – showed that water purification membranes enhanced by plasma-treated carbon nanotubes are ideal for removing contaminants and ...

CSIRO scientists have written software that could guide spacecraft to Alpha Centauri, show that the planet Nibiru doesn't exist … and prove that the Earth goes around the Sun. Dr George Hobbs (CSIRO) and his colleagues study pulsars — small spinning stars that deliver regular 'blips' or 'pulses' of radio waves and, sometimes, X-rays. Usually the astronomers are interested in measuring, very precisely, when the pulsar pulses arrive in the solar system. Slight deviations from the expected arrival times can give clues about the behaviour of a pulsar itself, or whether it ...

A culturally tailored HIV prevention program developed and tested by investigators at UCLA and the Charles R. Drew University of Medicine and Science has been shown to significantly reduce unprotected sex among bisexual black men. The innovative approach, called Men of African American Legacy Empowering Self, or MAALES, is described in an article in the peer-reviewed journal AIDS. The rate of HIV/AIDS among African-Americans is significantly higher than it is among any other ethnic or racial group. (According to the Centers for Disease Control and Prevention, African-Americans ...

Scientists at The University of Nottingham have shown that psychotic symptoms experienced by people with schizophrenia could be caused by a faulty 'switch' within the brain. In a study published today in the leading journal Neuron, they have demonstrated that the severity of symptoms such as delusions and hallucinations which are typical in patients with the psychiatric disorder is caused by a disconnection between two important regions in the brain — the insula and the lateral frontal cortex. The breakthrough, say the academics, could form the basis for better, more ...