Posted: 11 Feb 2015 12:39 PM PST
A study challenged younger and older people to look at faces and names while either listening to non-lyrical music or nothing at all. The college-aged participants had no problems -- the music didn't affect their performance. But the older adults remembered 10 percent fewer names when listening to background music or musical rain (as compared to silence).
Posted: 11 Feb 2015 12:39 PM PST
Researchers have identified a gene in Galápagos finches studied by English naturalist Charles Darwin that influences beak shape and that played a role in the birds' evolution from a common ancestor. The study illustrates the genetic foundation of evolution, including how genes can flow from one species to another, and how different versions of a gene within a species can contribute to the formation of new species.
Posted: 11 Feb 2015 11:12 AM PST
This finding supports model predictions about how two- and three-star systems form. Astronomers say understanding why and how multiple star systems form is essential for grasping phenomena such as star and planet formation, planet frequency and habitability.
Posted: 11 Feb 2015 11:12 AM PST
Patterns created by the brain's grid cells, which are believed to guide navigation, are modified by the shape of the environment, according to new research. This means grid patterns aren't a universal metric for the brain's GPS system to measure distance, as previously thought.
Posted: 11 Feb 2015 11:09 AM PST
Researchers have identified fatty acid binding proteins (FABPs) as intracellular transporters for two ingredients in marijuana, THC and CBD (cannabidiol). The finding is significant because it helps explain how CBD works within the cells. Recent clinical findings have shown that CBD may help reduce seizures and could be a potential new medicine to treat pediatric treatment-resistant epilepsy.
Posted: 11 Feb 2015 10:21 AM PST
Humans aren't the only species to be influenced by spin. Our closest primate relatives are susceptible, too. For example, people rate a burger as more tasty when it is described as "75 percent lean" than when it is described as "25 percent fat," even though that's the same thing. A new study finds that positive and negative framing make a big difference for chimpanzees and bonobos too.
Posted: 11 Feb 2015 10:21 AM PST
An expert panel that examined data from 320 studies is recommending new guidelines on how much sleep people should get. The guidelines are based on age, ranging from newborns (who need 14 to 17 hours of sleep per day) to adults aged 65 and up (7 to 8 hours per day).
Posted: 11 Feb 2015 10:21 AM PST
A randomized clinical research study looked at the effectiveness of a new treatment for stroke. The study involved adding a minimally invasive clot removal procedure called stent thrombectomy to standard clot-dissolving therapy, known as tissue plasminogen activator. The study showed a dramatic improvement in restoring blood flow back to the brain, which is critical in the recovery of stroke.
Posted: 11 Feb 2015 10:20 AM PST
Many challenges lie ahead before quantum annealing, the analogue version of quantum computation, contributes to solve combinatorial optimization problems. Traditional computational tools are simply not powerful enough to solve some complex optimization problems, like, for example, protein folding. Quantum annealing, a potentially successful implementation of analogue quantum computing, would bring about an ultra-performant computational method.
Posted: 11 Feb 2015 10:20 AM PST
A release of carbon dioxide from the deep ocean helped bring an end to the last Ice Age, according to new research. The study shows that carbon stored in an isolated reservoir deep in the Southern Ocean re-connected with the atmosphere, driving a rise in atmospheric CO2 and an increase in global temperatures. The finding gives scientists an insight into how the ocean affects the carbon cycle and climate change.
Posted: 11 Feb 2015 10:19 AM PST
How you fill out an online profile makes a big difference in how you're seen by others. New research shows it is better to be real with your information than trying to be perfect.
Posted: 11 Feb 2015 10:18 AM PST
In a study with chronic adolescent and adult meth users in South Korea, MRI brain scans showed decreased thickness in the gray matter of younger users’ frontal cortex. Adult brains showed less damage.
Posted: 11 Feb 2015 10:18 AM PST
Growing global trade is critically important for providing food when and where it's needed -- but it makes it harder to link the benefits of food and the environmental burden of its production. A new study proposes to extend the way we characterize global food trade to include nutritional value and resource consumption alongside more conventional measures of trade's value.
Posted: 11 Feb 2015 10:18 AM PST
While diet and exercise are important, new findings sharpen the role genetics play in people’s tendency to gain weight and where the fat is stored. This work is the first step toward finding individual genes that play key roles in body shape and size.
Posted: 11 Feb 2015 09:40 AM PST
The oldest known fur seal has been discovered by a Geology PhD student at New Zealand's University of Otago, providing a missing link that helps to resolve a more than 5-million-year gap in fur seal and sea lion evolutionary history.
Posted: 11 Feb 2015 09:40 AM PST
Children treated for moderate acute malnutrition experience a high rate of relapse and even death in the year following treatment and recovery. A new study indicates that supplementary feeding for a set time period -- 12 weeks -- makes an impact but may not be as important as treating children until they reach target weights and measures of arm circumference.
Posted: 11 Feb 2015 09:40 AM PST
Silibinin from milk thistle seeds could be a novel, non-invasive treatment strategy for Cushing Disease. Cushing Disease, not to be confused with Cushing's Syndrome, is caused by a tumor in the pituitary gland in the brain.
Posted: 11 Feb 2015 09:37 AM PST
To maximize stroke recovery, researchers may want to focus more on ways to support the side of the brain where the injury didn't occur, scientists report.
Posted: 11 Feb 2015 09:36 AM PST
Bird species have adapted to so many ecological niches in large part because of the variety of ways feathers lend them a competitive advantage. New research shows that one key to the feather's manifold manifestations is the dynamic evolution of a protein family that first appeared some 150 million years ago: the beta-keratins.
Posted: 11 Feb 2015 09:25 AM PST
Food dyes can give cakes, candy and sodas brilliant colors of the rainbow. Now a team of food scientists has found that food coloring may be able to play more than its traditional esthetic role in food presentation.
Posted: 11 Feb 2015 09:25 AM PST
Mechanosensation is one of our fundamental physiological processes, on par with sight and smell, but how it works on a cellular level remains poorly understood, holding back development of effective treatments for mechanosensory disorders like chronic pain. Now, a team of researchers has identified a new model organism that may help elucidate the cellular mechanisms behind mechanosensation: the ordinary duck.
Posted: 11 Feb 2015 09:25 AM PST
Researchers have isolated a peptide, a type of biological molecule, which binds strongly to lithium manganese nickel oxide (LMNO), a material that can be used to make the cathode in high performance batteries. The peptide can latch onto nanosized particles of LMNO and connect them to conductive components of a battery electrode, improving the potential power and stability of the electrode.
Posted: 11 Feb 2015 07:19 AM PST
Astronomers found surprisingly energetic activity in what they otherwise considered a "boring" galaxy, and their discovery provides important insight on how supermassive black holes can have a catastrophic effect on the galaxies in which they reside.
Posted: 11 Feb 2015 07:19 AM PST
A new study demonstrates the effects that a new variant of the hemorrhagic disease virus RHDV has on wild rabbits on the Iberian Peninsula. The virus threatens the survival of its predator, the Iberian lynx. Scientists have identified a new variant of the rabbit hemorrhagic disease virus (RHDV) throughout the entire Iberian Peninsula, including the areas where the Iberian lynx lives, such as the Sierra Morena mountains.
Posted: 11 Feb 2015 06:08 AM PST
Astronomers tinkering with ice and organics in the lab may have discovered why comets are encased in a hard, outer crust. Using an icebox-like instrument nicknamed Himalaya, the researchers show that fluffy ice on the surface of a comet would crystalize and harden as the comet heads toward the sun and warms up. As the water-ice crystals form, becoming denser and more ordered, other molecules containing carbon would be expelled to the comet's surface. The result is a crunchy comet crust sprinkled with organic dust.
Posted: 11 Feb 2015 05:41 AM PST
One in four acute ischemic stroke patients receiving the clot-busting drug tissue plasminogen activator were transferred to a facility with expertise in stroke care. Those transferred to a certified stroke center were more likely to be younger, male and white. Hospitals that accepted transferred stroke patients were more common in the Midwest and more likely to be larger or academic medical centers.
Posted: 11 Feb 2015 05:41 AM PST
A new study has found that teachers who report having more symptoms of depression had classrooms that were of lesser quality, and that students in these classrooms had fewer performance gains. Researchers looked at 27 teachers and their 523 third-grade students in a Florida school district. Teachers reported the frequency of their symptoms of clinical depression, and students' basic reading and math skills were assessed throughout the year.
Posted: 11 Feb 2015 05:40 AM PST
Many of the risk factors associated with pregnancy are more harmful when the expectant mother is over 35. According to an extensive, register-based study, the risks associated with overweight, smoking, gestational diabetes and pre-eclampsia are higher in advanced maternal age than in younger expectant mothers. dvanced maternal age refers to women giving birth at the age of over 35.
Posted: 11 Feb 2015 05:40 AM PST
The Planck collaboration has released data from four years of observation by the European Space Agency's Planck spacecraft. The aim of the Planck mission is to study the Cosmic Microwave Background, the light left over from the Big Bang. The measurements, taken in nine frequency bands, were used to map not only the temperature of the radiation but also its polarization, which provides additional information about both the very early Universe (when it was 380,000 years old) and our Galaxy's magnetic field.
Posted: 11 Feb 2015 05:29 AM PST
Researchers have captured the first X-ray portraits of living bacteria. This milestone is a first step toward possible X-ray explorations of the molecular machinery at work in viral infections, cell division, photosynthesis and other processes that are important to biology, human health and our environment.
Posted: 11 Feb 2015 05:29 AM PST
Socializing with neighbors leads to more planet-friendly behaviors than spending time with friends or family, research finds. That's due to the diversity of neighbors and overwhelming similarity of loved ones, researchers say. So be kind to your neighbors: they may hold the secret to greater action on climate change.
Posted: 11 Feb 2015 05:29 AM PST
If you want to unravel the secrets of proton spin, put a “twist” in your colliding proton beams. The Relativistic Heavy Ion Collider (RHIC) is the only facility in the world with the ability to collide such spin-polarized protons. The latest round of these collisions has just begun and will continue for approximately the next nine weeks.
Posted: 11 Feb 2015 05:29 AM PST
Fatalists trump rational thought: A new study by a political scientist examines perceptions of U.S. citizens about the benefits and risks of immunizations.
Posted: 10 Feb 2015 06:26 PM PST
Researchers have discovered that antibiotics have an unwanted impact on the microorganisms that live in an animal's gut that's more broad and complex than previously known. A study has helped to explain these processes, which are now believed to affect everything from the immune system to glucose metabolism, food absorption, obesity, stress and behavior.
Posted: 10 Feb 2015 06:26 PM PST
Involuntary dyskinetic movements induced by treatment with levodopa are a common problem for people with Parkinson's disease. Now, however, researchers seem to be close to a novel therapy to this distressing side effect.
Posted: 10 Feb 2015 06:26 PM PST
A new study shows how plants' vulnerability to drought varies across the landscape; factors such as plant structure and soil type where the plant is growing can either make them more vulnerable or protect them from declines.
Posted: 10 Feb 2015 06:26 PM PST
Geoengineering, an emerging technology aimed at counteracting the effects of human-caused climate change, also has the potential to counteract political polarization over global warming, according to a new study.
Posted: 10 Feb 2015 06:20 PM PST
Crocodilians engage in all three main types of play distinguished by behavior specialists: locomotor play, play with objects and social play. Crocodiles have also been seen playing with other animals. In rare cases, individual crocodilians have been known to bond so strongly with people that they become playmates for years.
Posted: 10 Feb 2015 06:20 PM PST
The technology leverages the molecular structure of polymers, which makes them highly capable of taking up and storing considerable volumes of lubricating liquids in their molecular structure, like sponges. This allows for absorption of a large reservoir of lubricant, which can then travel to the surface and render it continuously slippery and repellent -- creating an environment that challenges bacteria's ability to colonize.
Posted: 10 Feb 2015 06:20 PM PST
Some of the most prized violins in the world were crafted in the Italian workshops of Amati, Stradivari, and Guarneri -- master violinmaking families from the 17th and 18th centuries who produced increasingly powerful instruments in the renaissance and baroque musical eras. These violins, worth millions of dollars today, represent the Cremonese period -- what is now considered the golden age of violinmaking. Now acousticians and fluid dynamicists, along with violinmakers, have analyzed measurements from hundreds of Cremonese-era violins, identifying key design features that contribute to these particular violins' acoustic power, or fullness of sound.
Posted: 10 Feb 2015 05:59 PM PST
A new study found wide variations in the amount of methane being emitted at U.S. natural gas gathering facilities and processing plants. Their findings indicate facility-level methane emissions ranged from less than 1 kilogram per hour to 698 kilograms per hour, while loss rates ranged from less than 0.01 percent to greater than 10 percent.
Posted: 10 Feb 2015 11:20 AM PST
In the social world, people constantly gather information through visual cues that are used to evaluate others and interact. A new study determined that babies can make sense of complex social situations, and that they expect people to behave appropriately.
Posted: 10 Feb 2015 11:20 AM PST
Since the mid-20th century, research has pointed to an extension of the second law for nonequilibrium systems: the Maximum Entropy Production Principle states that a system away from equilibrium evolves in such a way as to maximize entropy production, given present constraints. Now, physicists have demonstrated the emergence of self-organized structures that drive the evolution of a non-equilibrium system to a state of maximum entropy production.
Posted: 10 Feb 2015 11:17 AM PST
Medical researchers have successfully demonstrated a new device to control fecal incontinence in women.
댓글 없음:
댓글 쓰기