WASHINGTON D.C. June 3, 2014 -- One of Leonardo da Vinci's masterpieces, drawn in red chalk on paper during the early 1500s and widely believed to be a self-portrait, is in extremely poor condition. Centuries of exposure to humid storage conditions or a closed environment has led to widespread and localized yellowing and browning of the paper, which is reducing the contrast between the colors of chalk and paper and substantially diminishing the visibility of the drawing. A group of researchers from Italy and Poland with expertise in paper degradation mechanisms was tasked ...

VIDEO: This video shows how a flat design folds into a cube with the addition of water. The researchers can fold and unfold the cube multiple times without wear, as... Click here for more information. WASHINGTON D.C. June 3, 2014 -- Researchers from the University of Twente in the Netherlands have taken the precise art of origami down to the microscopic scale. Using only a drop of water, the scientists have folded flat sheets of silicon nitride into cubes, pyramids, half soccer-ball-shaped ...

HOUSTON – (June 3, 2014) – Rice University scientists have created an Earth-friendly way to separate carbon dioxide from natural gas at wellheads. A porous material invented by the Rice lab of chemist James Tour sequesters carbon dioxide, a greenhouse gas, at ambient temperature with pressure provided by the wellhead and lets it go once the pressure is released. The material shows promise to replace more costly and energy-intensive processes. Results from the research appear today in the journal Nature Communications. Natural gas is the cleanest fossil fuel. Development ...

June 3, 2014 – Community opioid overdose prevention programs (OOPPs)—including the use of naloxone for rapid drug reversal—can improve bystander responses to overdose of heroin and related drugs, according to a review in the June Journal of Addiction Medicine, the official journal of the American Society of Addiction Medicine. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health . Based on the available evidence, "Bystanders (mostly opioid users) can and will use naloxone to reverse opioid overdoses when properly trained, and…this ...

ALBUQUERQUE, N.M. — Patients trying to navigate today's complex medical system with its costly laboratory analyses might prefer a pain-free home diagnostic device, worn on the wrist, that can analyze, continuously record and immediately remedy low electrolyte levels. Runners, athletes in other strenuous sports and soldiers on long missions also might prefer immediate knowledge of their electrolytic states as an aid to improved performance. Electrolytes such as potassium, calcium, magnesium and other salts are key in carrying nerve impulses that tell the heart and other ...

Research published in the International Journal of Sustainable Development suggests that purportedly entertaining films that feature global warming and climate change can affect public understanding. But films are often bound up in problematic and limiting identity politics, which commonly reiterate racial, gender and sexual stereotypes positioning as they do white men as being the decision makers and the voice of authority. Bridie McGreavy and Laura Lindenfeld of the Department of Communication and Journalism at the University of Maine, have analyzed three films that ...

NASA's Aqua satellite captured an infrared image of Tropical Depression 2E that revealed high, very cold cloud top temperatures. Strong thunderstorms with cold cloud top temperatures that reach high into the troposphere have the potential to drop heavy rainfall amounts, and the National Hurricane Center has forecast large rainfall for the southern region of Mexico over the next couple of days. A Tropical Storm Warning is in effect for Salina Cruz to the Mexico and Guatemala border as the depression remained stationary near the southwestern coast of Mexico on June 3. NASA's ...

URBANA, Ill. – When participants in a local Women, Infants, and Children (WIC) program received vouchers for fruits and vegetables at area farmers markets, they ate a greater variety of vegetables and more often chose fruits or vegetables as snacks. But a survey comparing prices at grocery stores and farmers markets showed that better produce prices could be found in local supermarkets, says a new University of Illinois study. "The biggest effect the vouchers had was related to the quality of participants' diets. Those who used the farmers market vouchers ate a greater ...

June 3, 2014 - Standardized research methods are needed to make greater progress toward reducing the high burden and costs of chronic low back pain (cLBP), according to a Task Force report in the June 15 issue of Spine. The journal is published by Lippincott Williams & Wilkins, a part of Wolters Kluwer Health. The article introduces a set of proposed research standards to help in comparing the results of cLBP studies. The recommendations were developed by a Research Task Force convened by the NIH Pain Consortium. The Task Force co-chairs were Drs Richard A. Deyo of ...

CHAMPAIGN, Ill. — Children who are physically fit have faster and more robust neuro-electrical brain responses during reading than their less-fit peers, researchers report. These differences correspond with better language skills in the children who are more fit, and occur whether they're reading straightforward sentences or sentences that contain errors of grammar or syntax. The new findings, reported in the journal Brain and Cognition, do not prove that higher fitness directly influences the changes seen in the electrical activity of the brain, the researchers say, ...

CHAMPAIGN, Ill. — An invasive weed that has put some southern cotton farmers out of business is now finding its way across the Midwest – and many corn and soybean growers don't yet appreciate the threat, University of Illinois researchers report. Palmer amaranth (Amaranthus palmeri), a flowering plant native to the Sonoran desert and southwest United States, has a laundry list of traits that make it a fierce competitor on the farm, said Aaron Hager, a University of Illinois crop sciences professor. Palmer amaranth germinates throughout much of the growing season, starts ...

As the developing world continues to develop, standards of living and access to technology increases. Unfortunately, as personal computers, laptops and mobile phones become increasingly common so the problem of recycling and disposal of such devices when they become technologically obsolete rises too, according to research published in the International Journal of Environmental Technology and Management. Neelu Jain of the PEC University of Technology, in Chandigarh and Pamela Chawla of the Surya World, Surya World Technical Campus in Punjab, India, have estimated the ...

Scientists at New York University and the University of Melbourne have developed a method using DNA origami to turn one-dimensional nano materials into two dimensions. Their breakthrough, published in the latest issue of the journal Nature Nanotechnology, offers the potential to enhance fiber optics and electronic devices by reducing their size and increasing their speed. "We can now take linear nano-materials and direct how they are organized in two dimensions, using a DNA origami platform to create any number of shapes," explains NYU Chemistry Professor Nadrian Seeman, ...

MADISON, Wis. — A grandfather clock is, on its surface, a simple yet elegant machine. Tall and stately, its job is to steadily tick away the time. But a look inside reveals a much more intricate dance of parts, from precisely-fitted gears to cable-embraced pulleys and bobbing levers. Like exploring the inner workings of a clock, a team of University of Wisconsin-Madison researchers is digging into the inner workings of the tiny cellular machines called spliceosomes, which help make all of the proteins our bodies need to function. In a recent study published in the journal ...

Alexandria, Va., USA – The International and American Associations for Dental Research (IADR/AADR) have published a paper titled "Preventive Services by Medical and Dental Providers and Treatment Outcomes." Nearly all state Medicaid programs reimburse non-dental primary care providers (nDPCPs) for providing preventive oral health services to young children; yet, little is known about how treatment outcomes compare to children visiting dentists. This study compared the association between the provider of preventive services (nDPCP, dentist or both) to Medicaid-enrolled children ...

Boulder, Colo., USA – In a new study published in the Geological Society of America Bulletin, geoscientists Wolfgang Stinnesbeck of the University of Heidelberg and colleagues document the discovery of forty-six ophthalmosaurid ichthyosaurs (marine reptiles). These specimens were discovered in the vicinity of the Tyndall Glacier in the Torres del Paine National Park of southern Chile. Among them are numerous articulated and virtually complete skeletons of adults, pregnant females, and juveniles. Preservation is excellent and occasionally includes soft tissue and embryos. ...

As a kind of ground-based optical astrometric instrument, zenith telescope observes stars near zenith, which substantially reduces the influence of normal atmospheric refraction. Its high-precision observations can be used to calculate astronomical latitude and longitude, which are mainly applied in mobile measurement for deflection of the vertical, long-term measurement for the variations of the vertical, and related researches of astronomical seismology. Utilizing CCD camera, high-precision tiltmeter and other new technologies and devices, Chinese researchers have successfully ...

Astronomers using the Karl G. Jansky Very Large Array (VLA) and the Chandra X-Ray Observatory have produced a spectacular image revealing new details of violent collisions involving at least four clusters of galaxies. Combined with an earlier image from NASA's Hubble Space Telescope (HST), the new observations show a complex region more than 5 billion light-years from Earth where the collisions are triggering a host of phenomena that scientists still are working to understand. The HST image forms the background of this composite, with the X-ray emission detected by Chandra ...

PHILADELPHIA (June 2, 2014) – A new study from researchers at Drexel University adds evidence that using common antidepressant medications during pregnancy may contribute to a higher risk of autism spectrum disorders (ASD) in children, although this risk is still very small. Results from past studies of prenatal use of selective serotonin reuptake inhibitors (SSRIs) and ASD risk have not been consistent. An ongoing challenge in this line of research is trying to tease apart potential effects of the medication on risk from the effects associated with the condition for ...

The Gobi-Steppe Ecosystem is world renowned for its populations of migratory ungulates, which cover great distances in search of forage. Researchers at the Research Institute of Wildlife Ecology at Vetmeduni Vienna have documented, that in just one year an individual wild ass can range over an area of 70,000 km2. "Wild asses and gazelles have to be permanently on the move and travel very long distances to find enough food. Rainfall is highly variable in this region. As a consequence pastures are patchy and unpredictable in space and time," explains Petra Kaczensky, one ...

VIDEO: This is a movie illustrating the lack of lymphatic flow in the lower leg of a subject with lymphedema. Click here for more information. WASHINGTON, June 3, 2014—The human lymphatic system is an important but poorly understood circulatory system consisting of tiny vessels spread throughout the body. This "drainage" network helps guard against infections and prevents swelling, which occasionally happens when disease or trauma interrupts normal lymphatic function. Chronic ...

EAST LANSING, Mich. --- Despite playing a more important role in the wake of 9/11, the security guard industry remains plagued by inadequate training and standards in many states, indicates new research by Michigan State University criminologists. Formal training of the nation's 1 million-plus private security officers is widely neglected, a surprising finding when contrasted with other private occupations such as paramedics, childcare workers and even cosmetologists, said Mahesh Nalla, lead investigator and MSU professor of criminal justice. By and large, security ...

The balancing strategy to lateral impact in a rat is closely related to the striked position of the body. The research result can be inspired to improve the robustness of bionic robot. This was found by Dr. JI Aihong and his group from Institute of Bio-inspired Structure and Surface Engineering, Nanjing University of Aeronautics and Astronautics. This work, entitled "Balancing strategy to lateral impact in a rat Rattus norregicus", was published in Chinese Science Bulletin (In Chinese)，2014, Vol 59(13) issue. The center of mass(COM) of animal's body always falls ...

The big data era bring the confusions, challenges and opportunities to the modeling and simulation field tightly associated with big data. The Chinese Association for System Simulation undertook the 81st new ideas and new theories academic salon of China Association for Science and Technology. This salon, directed by Li Bohu (academician of Chinese Academy of Science) and Hu Xiaofeng (professor of National Defense University, PLA) as the leading scientists, called about 20 specialists and scholars from all the country together. They deeply investigated big data from different ...

WHAT: By analyzing the blood of almost 100 treated and untreated HIV-infected volunteers, a team of scientists has identified previously unknown characteristics of B cells in the context of HIV infection. B cells are the immune system cells that make antibodies to HIV and other pathogens. The findings augment the current understanding of how HIV disease develops and have implications for the timing of treatment. Researchers at the National Institute of Allergy and Infectious Diseases, part of the National Institutes of Health, led the study. Using advanced tools to probe ...