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Friday, November 1, 2013

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


When to invest in the right innovations at the right moment in a product's life cycle

Posted: 31 Oct 2013 12:35 PM PDT

When it comes to reducing the environmental impacts of products and services while maximizing profits, firms sometimes invest in the wrong areas.

Magnetic 'force field' shields giant gas cloud during collision with Milky Way

Posted: 31 Oct 2013 12:34 PM PDT

Doom may be averted for the Smith Cloud, a gigantic streamer of hydrogen gas that is on a collision course with the Milky Way Galaxy. Astronomers have discovered a magnetic field deep in the cloud's interior, which may protect it during its meteoric plunge into the disk of our Galaxy.

Former missile-tracking telescope helps reveal fate of baby pulsar

Posted: 31 Oct 2013 11:29 AM PDT

A radio telescope once used to track ballistic missiles has helped astronomers determine how the magnetic field structure and rotation of the young and rapidly rotating Crab pulsar evolves with time.

First look at diverse life below rare tallgrass prairies

Posted: 31 Oct 2013 11:27 AM PDT

For the first time, biologists have gotten a peek at a vitally important community that once called the tallgrass prairie home: The diverse assortment of microbes that thrived in the dark, rich soils beneath the grass.

Molecule that orients neurons for high definition sensing identified

Posted: 31 Oct 2013 11:27 AM PDT

Many animals have highly developed senses, such as vision in carnivores, touch in mice, and hearing in bats. New research has uncovered a brain molecule that can explain the existence of such finely-tuned sensory capabilities, revealing how brain cells responsible for specific senses are positioned to receive incoming sensory information.

Making electrical contact along 1-D edge of 2-D materials

Posted: 31 Oct 2013 11:27 AM PDT

Scientists have demonstrated it is possible for an atomically thin two-dimensional material to have electrical contact along its one-dimensional edge. The contact architecture offers a new assembly technique for layered materials that prevents contamination at interfaces.

Is global heating hiding out in the oceans? Parts of Pacific warming 15 times faster than in past 10,000 years

Posted: 31 Oct 2013 11:27 AM PDT

In a reconstruction of Pacific Ocean temperatures in the last 10,000 years, researchers have found that its middle depths have warmed 15 times faster in the last 60 years than they did during apparent natural warming cycles in the previous 10,000.

New techniques produce cleanest graphene yet

Posted: 31 Oct 2013 11:27 AM PDT

Researchers demonstrate for the first time that it's possible to electrically contact an atomically thin 2D material only along its 1D edge. With this new contact architecture, they've developed a new assembly technique for layered materials that prevents contamination at the interfaces, and, using graphene as the model 2D material, show that these two methods in combination result in the cleanest graphene yet realized.

Gene found to foster synapse formation in the brain

Posted: 31 Oct 2013 11:26 AM PDT

Researchers say they have found that a gene already implicated in human speech disorders and epilepsy is also needed for vocalizations and synapse formation in mice. The finding, they say, adds to scientific understanding of how language develops, as well as the way synapses — the connections among brain cells that enable us to think — are formed.

Critical gene in retinal development and motion sensing identified

Posted: 31 Oct 2013 11:26 AM PDT

Our vision depends on exquisitely organized layers of cells within the eye's retina, each with a distinct role in perception. Researchers say they have taken an important step toward understanding how those cells are organized to produce what the brain "sees." Specifically, they report identification of a gene that guides the separation of two types of motion-sensing cells, offering insight into how cellular layering develops in the retina, with possible implications for the brain's cerebral cortex.

Most detailed picture yet of key AIDS protein

Posted: 31 Oct 2013 11:26 AM PDT

Scientists have determined the first atomic-level structure of the tripartite HIV envelope protein—long considered one of the most difficult targets in structural biology and of great value for medical science.

Stem cell scarring aids recovery from spinal cord injury

Posted: 31 Oct 2013 11:06 AM PDT

The scar tissue formed by stem cells after a spinal cord injury does not impair recovery; in fact, stem cell scarring confines the damage,according to new research. The findings indicate that scar tissue prevents the lesion from expanding and helps injured nerve cells survive. Spinal cord injuries sever nerve fibers that conduct signals between the brain and the rest of the body, causing various degrees of paralysis depending on the site and extent of the injury. Functional impairment is often permanent, since the cut nerve fibers do not grow back. The lack of regeneration had previously been attributed to a blockage from scar tissue that forms at the lesion.

Lefties more likely to have psychotic disorders such as schizophrenia

Posted: 31 Oct 2013 09:53 AM PDT

Being left-handed has been linked to many mental disorders, but now scientists have found that among those with mental illnesses, people with psychotic disorders like schizophrenia are much more likely to be left-handed than those with mood disorders like depression or bipolar syndrome. The new study is published in the Oct.-Dec. 2013 issue of the journal SAGE Open.

Houston we have a problem: Microgravity accelerates biological aging

Posted: 31 Oct 2013 09:53 AM PDT

As nations strive to put humans farther into space for longer periods of time, the real loser in this new space race could be the astronauts themselves. That's because experiments conducted on the International Space Station show that microgravity accelerates cardiovascular disease and the biological aging of these cells.

Incomplete protein digestion is useful for some bacteria

Posted: 31 Oct 2013 09:53 AM PDT

Protein degradation by energy-dependent proteases normally results in the complete destruction of target proteins. However, under particularly harsh artificial conditions in the test tube, these proteases can stall on certain targets. But until recent experiments, such an effect had never been seen inside a living bacterial cell.

Underwater robots influence complex swimming behaviors of schooling fish

Posted: 31 Oct 2013 09:52 AM PDT

Scientists have demonstrated how underwater robots can be used to understand and influence the complex swimming behaviors of schooling fish. Robotic fish have an impact on collective animal behavior.

Gaming technology unravels one of the most complex entities in nature: Computational research unveils secrets in the human carbohydrate bar-code

Posted: 31 Oct 2013 09:52 AM PDT

Scientists have used the power of off-the-shelf computer gaming technology to capture previously unobservable atomic movements. The research is helping to chart one of nature's most complex entities known as "glycomes" -- the entire complement of carbohydrates within a cell.

HIV antibody infusions show promise for treating SHIV-infected monkeys

Posted: 31 Oct 2013 09:52 AM PDT

Two teams are reporting results from experiments in which they infused powerful anti-HIV antibodies into monkeys infected with an HIV-like virus, rapidly reducing the amount of virus, or viral load, to undetectable levels, where it remained for extended periods. Both teams worked with monkeys infected with simian human immunodeficiency virus, or SHIV, which can cause AIDS in monkeys.

Dogs know a left-sided wag from a right

Posted: 31 Oct 2013 09:49 AM PDT

You might think a wagging tail is a wagging tail, but for dogs there is more to it than that. Dogs recognize and respond differently when their fellow canines wag to the right than they do when they wag to the left. The findings show that dogs, like humans, have asymmetrically organized brains, with the left and right sides playing different roles.

Butterflies show origin of species as an evolutionary process, not a single event

Posted: 31 Oct 2013 09:49 AM PDT

The evolution of new species might not be as hard as it seems, even when diverging populations remain in contact and continue to produce offspring. That's the conclusion of studies that examine the full genome sequences of 32 Heliconius butterflies from the Central American rain forest, representing five different species.

Physicists take an atomic-level peek at unexpected behavior in multilayered structures

Posted: 31 Oct 2013 09:47 AM PDT

A new class of materials may influence the next generation of nano-devices, in which integrated circuits are composed of many layers of dissimilar materials.

Real-time, 3-D teleconferencing technology developed

Posted: 31 Oct 2013 09:47 AM PDT

Engineers have developed 3-D teleconferencing technology that's live, real-time and streaming at 30 frames per second. They say the technology could be ready for smart phones in a few years.

Could a Milky Way supernova be visible from Earth in next 50 years?

Posted: 31 Oct 2013 09:46 AM PDT

Astronomers have calculated the odds that, sometime during the next 50 years, a supernova occurring in our home galaxy will be visible from Earth. The good news: they've calculated the odds to be nearly 100 percent that such a supernova would be visible to telescopes in the form of infrared radiation. The bad news: the odds are much lower -- dipping to 20 percent or less -- that the shining stellar spectacle would be visible to the naked eye in the nighttime sky.

Geoengineering the climate could reduce vital rains

Posted: 31 Oct 2013 09:46 AM PDT

Although a significant build-up in greenhouse gases in the atmosphere would alter worldwide precipitation patterns, geoengineering would also interfere with rainfall and snowfall. An international study finds that "geoengineering" could result in monsoonal rains in North America, East Asia, and other regions dropping by 5-7 percent compared to preindustrial conditions because of less evaporation and reduced plant emissions of water.

Evolution of new species requires few genetic changes

Posted: 31 Oct 2013 09:46 AM PDT

Only a few genetic changes are needed to spur the evolution of new species—even if the original populations are still in contact and exchanging genes. Once started, however, evolutionary divergence evolves rapidly, ultimately leading to fully genetically isolated species, report scientists.

Primary GOES-R instrument ready to be installed onto spacecraft

Posted: 31 Oct 2013 08:19 AM PDT

A key instrument that will fly on the Geostationary Operational Environmental Satellite-R (GOES-R) spacecraft, NOAA's next-generation of geostationary satellites, is cleared for installation on the spacecraft. The Advanced Baseline Imager, or ABI, is GOES-R's primary instrument for scanning Earth's weather, oceans, and environment and is a significant improvement over instruments on NOAA's current geostationary satellites. The ABI will offer faster imaging with much higher detail. It will also introduce new forecast products for severe weather, volcanic ash advisories, fire and smoke monitoring and other hazards.

NASA advances world's first spaceborne sodium lidar: Small-scale measurements of Earth's mesosphere sought

Posted: 31 Oct 2013 08:16 AM PDT

It's used as a coolant in nuclear power plants and as a desiccant to remove humidity that otherwise would ruin moisture-sensitive products. Found in every cell in the human body, it transmits nerve impulses and regulates blood pressure. And as it turns out, sodium -- the sixth most abundant element in Earth's crust -- also is useful as a tracer for characterizing Earth's mesosphere, a poorly understood region of Earth's atmosphere that's sensitive to both the influences from the sun above and the atmospheric layers below.

Suzaku study points to early cosmic 'seeding'

Posted: 31 Oct 2013 08:07 AM PDT

Most of the universe's heavy elements, including the iron central to life itself, formed early in cosmic history and spread throughout the universe, according to a new study of the Perseus Galaxy Cluster using Japan's Suzaku satellite.

Patient in 'vegetative state' not just aware, but paying attention, study suggests

Posted: 31 Oct 2013 08:05 AM PDT

A patient in a seemingly vegetative state, unable to move or speak, showed signs of attentive awareness that had not been detected before, a new study reveals.

New knowledge about the body's fight against HIV

Posted: 31 Oct 2013 08:05 AM PDT

A study of the body's reactions to the HIV virus has led to new understanding of the immune system's fight against HIV. The discovery is an important step on the road towards the future development of new methods for treating HIV.

New recyclable building material, made partially from potatoes, could help solve waste problem

Posted: 31 Oct 2013 08:05 AM PDT

A new biodegradable and recyclable form of medium density fibreboard (MDF) has been created that could dramatically reduce the problem of future waste.

Defective nanotubes turned into light emitters

Posted: 31 Oct 2013 08:05 AM PDT

Researchers have developed and patented a new source of light emitter based on boron nitride nanotubes and suitable for developing high-efficiency optoelectronic devices.

Early rehospitalization after kidney transplant caused by complexity of condition, not poor quality of care

Posted: 31 Oct 2013 08:05 AM PDT

A study of over 750 kidney transplant patients over a five-year period has found that 90 percent of early rehospitalizations (within 30 days of surgery) were caused by complex medical factors related to the transplantation process. Only nine percent of rehospitalizations – which occurred among only three percent of the entire group of patients – were categorized as potentially preventable.

'Witch Head' Brews Baby Stars

Posted: 31 Oct 2013 08:02 AM PDT

A witch appears to be screaming out into space in this new image from NASA's Wide-Field Infrared Survey Explorer, or WISE. The infrared portrait shows the Witch Head nebula, named after its resemblance to the profile of a wicked witch. Astronomers say the billowy clouds of the nebula, where baby stars are brewing, are being lit up by massive stars

Simple plants aren't always easy: Revision of the liverwort Radula buccinifera complex

Posted: 31 Oct 2013 07:33 AM PDT

Simple plants aren't always easy, proves the Radula buccinifera complex, formed of "primitive," small, moss-like plants called liverwort. Molecular and morphological evidence show that what was thought to be one species of leafy liverwort from Australia and New Zealand is in fact eight different species, and five of these are new to science.

U.S. study gives Catholic schools poor marks

Posted: 31 Oct 2013 07:33 AM PDT

A national U.S. study suggests Catholic schools are not superior to public schools after all.

Pizza perfect! A nutritional overhaul of 'junk food,' ready-meals is possible

Posted: 31 Oct 2013 07:33 AM PDT

Pizza is widely regarded as a fully-paid up member of the junk food gang -- maybe even the leader -- at least the versions found on supermarket shelves or delivered to your door by scooter.

Monster mash: Protein folding gone wrong

Posted: 31 Oct 2013 07:30 AM PDT

Imagine a 1950s horror movie monster —- a creeping, gluey tangle of gunk that strangles everything around it. That's what amyloid plaques are like when they form in body tissues. These gooey protein clumps are associated with many chronic and debilitating disorders, and scientists have made enormous strides in understanding how these structures play roles in disease.

Pronghorn warming to safe passages: Scientists observe as pronghorn use overpass without hesitation

Posted: 31 Oct 2013 07:30 AM PDT

Scientists observing the fall migration of pronghorn from Grand Teton National Park to the Upper Green River Basin announced that for the second year, the animals have successfully used the newly constructed overpasses that provide safe passage over U.S. Highway 191 in Trapper's Point, Wyoming. More telling, the scientists report that unlike the first year, the pronghorn showed no hesitation in using the overpass and have apparently adapted to the structure.

Animal personalities are more like humans than first thought

Posted: 31 Oct 2013 06:23 AM PDT

A study has found for the first time that, just like humans, unpredictability is also a consistent behavioral trait in the animal world.

Breakthrough research produces brighter, more efficiently produced lighting

Posted: 31 Oct 2013 06:04 AM PDT

By determining simple guidelines, researchers have made it possible to optimize phosphors -- a key component in white LED lighting -- allowing for brighter, more efficient lights.

Seeing in the dark: Most people can see their body's movement in the absence of light

Posted: 31 Oct 2013 06:04 AM PDT

With the help of computerized eye trackers, a new cognitive science study finds that at least 50 percent of people can see the movement of their own hand even in the absence of all light.

Tagging aquatic animals can disrupt natural behavior

Posted: 31 Oct 2013 06:04 AM PDT

American and Canadian researchers have for the first time quantified the energy cost to aquatic animals when they carry satellite tags, video cameras and other research instruments.

Sex determiner gene of honey bee more complicated than thought

Posted: 31 Oct 2013 06:03 AM PDT

Bee colonies consist of a queen bee, lots of female worker bees and some male drones. The gene that determines the sex of the bees is much more complex than has been assumed up until now and has developed over the course of evolution very quickly.

Chickens to benefit from biofuels bonanza

Posted: 31 Oct 2013 06:03 AM PDT

Chickens could be the unexpected beneficiaries of the growing biofuels industry, feeding on proteins retrieved from the fermenters used to brew bioethanol, thanks to new research.

Giant atom eats quantum gas

Posted: 31 Oct 2013 06:03 AM PDT

A team of experimental and theoretical physicists has studied a single micrometer-sized atom. This atom contains tens of thousands of normal atoms in its electron orbital.

Exposure to cortisol-like medications before birth may contribute to emotional problems, brain changes

Posted: 31 Oct 2013 06:03 AM PDT

Neonatologists seem to perform miracles in the fight to support the survival of babies born prematurely. To promote their survival, cortisol-like drugs called glucocorticoids are administered frequently to women in preterm labor to accelerate their babies' lung maturation prior to birth, a substance naturally released by the body when stressed. But the levels of glucocorticoids administered to promote lung development are higher than that achieved with typical stress, similar to the body's reaction to extreme stresses.

High protein diet, meal replacements can reduce rebound weight gain

Posted: 31 Oct 2013 06:03 AM PDT

New research shows that there are several effective strategies available to people wanting to avoid regaining weight after a successful diet. Anti-obesity drugs, meal replacements and a high protein diet can help weight loss maintenance.

Scent marking - the mammalian equivalent of showy plumage

Posted: 31 Oct 2013 06:03 AM PDT

The smell of urine may not strike people as pleasant, but female mice find it as attractive as cologne. Researchers have confirmed that male house mice that excel at scent-marking their territory also have more offspring. This is likely because mouse females are able to infer mate quality from the males' scent mark deposits.

Hospital volume linked to outcomes for aortic valve replacement

Posted: 31 Oct 2013 06:00 AM PDT

High risk patients have better outcomes when undergoing aortic valve replacement (AVR) at hospitals that perform high volumes of the procedure.

Fresher blood donations may be better for recipients

Posted: 31 Oct 2013 06:00 AM PDT

Although clinical evidence is lacking on the relationship between the storage time of red blood cells and outcomes in transfused patients, these authors are advocating for a modernized blood management system — similar to inventory management systems seen in the retail sector — to potentially reduce patient complications.

Better inventory management systems can reduce operating room costs

Posted: 31 Oct 2013 06:00 AM PDT

Health-care supply chain researchers conducted a major study of three hospitals and found that adoption of advanced inventory management systems can significantly reduce costs associated with medical and surgical items used in operating rooms.

Reducing price differences in energy market may not help consumers

Posted: 30 Oct 2013 06:42 PM PDT

A more sophisticated understanding of what motivates consumers to choose energy suppliers is needed if the government is to stimulate activity and promote competition in the market effectively, according to new research.

New test to determine the severity of coronary artery disease

Posted: 30 Oct 2013 04:00 PM PDT

A new study supports the use of instantaneous wave-free ratio, to simplify assessment and determine the severity of coronary artery disease.

Conservative approach to revascularization is safe

Posted: 30 Oct 2013 04:00 PM PDT

A new study shows that a conservative approach to revascularization for patients with intermediate coronary lesions determined by angiographic diameter stenosis is safe and non-inferior to an aggressive approach.

Drug for artery disease showing promise

Posted: 30 Oct 2013 04:00 PM PDT

The first clinical trial in the United States to study the use of drug coated balloons for femoropopliteal artery disease found the procedure is promising for safety and efficacy at six months.

Old drug may teach new tricks in treating infectious diseases, cancer

Posted: 30 Oct 2013 03:59 PM PDT

Meclizine, an over-the-counter drug used for decades to treat nausea and motion sickness, has the potential for new uses to treat certain infectious diseases and some forms of cancer.

Absence of the SMG1 protein could contribute to Parkinson's, other neurological disorders

Posted: 30 Oct 2013 03:59 PM PDT

The absence of a protein called SMG1 could be a contributing factor in the development of Parkinson's disease and other related neurological disorders, according to a study.

Research shows ability to do next-generation sequencing for patients with advanced cancers

Posted: 30 Oct 2013 03:59 PM PDT

A pilot study shows that, even for patients with advanced and rapidly transforming cancer, researchers can find potential therapeutic targets using the latest advances in genomic sequencing. Sequencing spells out, or decodes, the billions of letters of DNA and other genomic data so that clinicians can discover what genetic changes might lead to cancer.

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