Updated: 7 min 30 sec ago
A new process uses silicon telluride to produce multilayered two-dimensional semiconductor materials in a variety of shapes and orientations.
In a study of more than 8,000 veterans in Hawaii and the Pacific Islands, those with posttraumatic stress disorder had a nearly 50 percent greater risk of developing heart failure. The study adds to a growing body of evidence linking PTSD and heart disease. The research to date--including these latest findings--doesn't show a clear cause-and-effect relationship. But most experts believe PTSD, like other forms of chronic stress or anxiety, can damage the heart over time.
A new study of women with early-stage breast cancer finds that surgeons no longer universally remove most of the lymph nodes in the underarm area when a biopsy of the nearby lymph nodes shows cancer -- a major change in breast cancer management.
Coral trout in protected 'green zones' are not only bigger and more abundant than those in fished 'blue zones' of the Great Barrier Reef Marine Park, but they are also better able to cope with cyclone damage, according to a long-term study.
How you feel pain is affected by where sources of pain are in relation to each other, and so crossing your fingers can change what you feel on a single finger, finds new research. "Many people suffer from chronic pain, and the level of pain experienced can be higher than would be expected from actual tissue damage. Our research is basic laboratory science, but it raises the interesting possibility that pain levels could be manipulated by applying additional stimuli, and by moving one part of the body relative to others," the senior author explained.
A protein has been found that is critical to both the normal development of the brain and, in many cases, the development of medulloblastoma, a fast-growing brain tumor that usually strikes children under 10. When the researchers cut the level of the protein Eya1 in half in mice prone to develop medulloblastoma, the animals' risk of dying from the disease dropped dramatically.
Using high-performance computing and genetic engineering to boost the photosynthetic efficiency of plants offers the best hope of increasing crop yields enough to feed a planet expected to have 9.5 billion people on it by 2050, researchers report.
Scientists say our brains may not be as complicated as we once thought -- and they're using sea slugs to prove it. “This research introduces new methods for pulling apart neural circuits to expose their inner building blocks. Our methods could be used to help understand how brain networks change in disease states and how drugs act to restore normal brain function,” authors say.
Researchers have developed simple but effective techniques to prevent sophisticated malware from secretly attacking smartphones.
A study of 165 veterans currently enrolled at three Texas universities shows that those who use problem-focused coping strategies for anxiety and depression instead of avoidant coping have more successful transitions from military life to college student life.
Buildings destroyed by the 2011 Tohoku earthquake released thousands of tons of climate-warming and ozone-depleting chemicals into the atmosphere, according to a new study.
Researchers have discovered a new species of jumping spider from 'Western Ghats' in southern India, one of the biodiversity hotspots of the world. The spider, which has been named as Stenaelurillus albus, is remarkable for the presence of mating plugs or copulatory plugs, which are supposed to function as paternity protection devices.
Men with a high fitness level in midlife appear to be at lower risk for lung and colorectal cancer, but not prostate cancer, and that higher fitness level also may put them at lower risk of death if they are diagnosed with cancer when they're older, according to a study.
An experimental therapy successfully tested in mice cut in half the time it takes to heal wounds compared to no treatment at all. "We envision that our nanoparticle therapy could be used to speed the healing of all sorts of wounds, including everyday cuts and burns, surgical incisions, and chronic skin ulcers, which are a particular problem in the elderly and people with diabetes," said a study co-leader.
In popular culture, the phrase "battle of the sexes" seems to pit the male hormone (testosterone) against the female (estrogen). Now a researcher has documented a way in which the two hormones work together to protect low-testosterone males from the effects of anxiety and depression.
In biology, materials science and the energy sciences, structural information provides important insights into the understanding of matter. The link between a structure and its properties can suggest new avenues for designed improvements of synthetic materials or provide new fundamental insights in biology and medicine at the molecular level.
Undisturbed ecosystems can be resistant to changing climatic conditions, but this resistance is reduced when ecosystems are subject to natural or anthropogenic disturbances. Plants are particularly sensitive to climatic changes in early life stages and even small climatic changes can cause vegetation shifts when ecosystems are disturbed by fires, insect outbreaks or other disturbances.
Mathematicians have designed an encryption code capable of fending off the phenomenal hacking power of a quantum computer. Using high-level number theory and cryptography, the researchers reworked an infamous old cipher called the knapsack code to create an online security system better prepared for future demands.
A new tissue culture model using human white blood cells shows how people with a latent -- or symptom-free -- tuberculosis infection are protected from active disease by a critical early step in their immune response, researchers say.
Researchers have created materials that exploit the electromechanical properties of specific nanofibers to stretch to up to seven times their length, while remaining tougher than Kevlar.