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Maths helps mobiles & tablets match eyes' ability to switch from sunshine to shadow

Maths helps mobiles & tablets match eyes' ability to switch from sunshine to shadow
2012-11-29
Researchers have pushed the boundaries of High Dynamic Range (HDR) video to match our own eyes' ability to cope with the real world's ever rapidly changing light intensity - such as sun simply going behind clouds. Now researchers at WMG at the University of Warwick, have found a way to compress and stream HDR video directly to monitors and mobile devices, such as an iPad, bringing enormous benefits to industries including gaming and security. Researchers at WMG at the University of Warwick, working in partnership with spinout company goHDR Ltd, have succeeded in achieving ...

First-ever hyperspectral images of Earth's auroras

First-ever hyperspectral images of Earth's auroras
2012-11-29
WASHINGTON, Nov. 29—Hoping to expand our understanding of auroras and other fleeting atmospheric events, a team of space-weather researchers designed and built NORUSCA II, a new camera with unprecedented capabilities that can simultaneously image multiple spectral bands, in essence different wavelengths or colors, of light. The camera was tested at the Kjell Henriksen Observatory (KHO) in Svalbard, Norway, where it produced the first-ever hyperspectral images of auroras—commonly referred to as "the Northern (or Southern) Lights"—and may already have revealed a previously ...

Bacteria hijack host cell process, create their own food supply to become infectious

2012-11-29
COLUMBUS, Ohio – Bacteria that cause the tick-borne disease anaplasmosis in humans create their own food supply by hijacking a process in host cells that normally should help kill the pathogenic bugs, scientists have found. This bacterium, Anaplasma phagocytophilum (Ap), secretes a protein that can start this process. The protein binds with another protein produced by white blood cells, and that connection creates compartments that siphon host-cell nutrients to feed the bacteria, enabling their growth inside the white blood cells. The finding defies conventional wisdom ...

Insects beware: The sea anemone is coming

2012-11-29
Bethesda, MD—As insects evolve to become resistant to insecticides, the need to develop new ways to control pests grows. A team of scientists from Leuven, Belgium have discovered that the sea anemone's venom harbors several toxins that promise to become a new generation of insecticides that are environmentally friendly and avoid resistance by the insects. Since these toxins disable ion channels that mediate pain and inflammation, they could also spur drug development aimed at pain, cardiac disorders, epilepsy and seizure disorders, and immunological diseases such as multiple ...

Brain inflammation likely key initiator to prion and Parkinson's disease

2012-11-29
Prion diseases represent a family of neurodegenerative disorders associated with the loss of brain cells and caused by proteins called prions (derived from 'protein' and 'infection'). The diseases are found in both humans and animals, such as Creutzfeld-Jakob disease and mad cow disease respectively. Although mostly harmless, prions can transform into infectious agents, which accumulate in the brain and destroy the nervous tissue. But how exactly does the accumulation of prions cause destruction of the brain? "Understanding the process by which prions destroy neurons ...

New genetic test detects early breast cancer and identifies future risk

2012-11-29
Bethesda, MD—Physicians may now be better at detecting breast cancer than ever before, but much more work remains to ensure accurate diagnosis is possible and especially to assess future risk. That's why researchers from Germany have been working to develop a new test of gene action to predict cancer risk both at first diagnosis and into the future. In a new research report appearing in the December 2012 issue of The FASEB Journal, researchers show that the various genetic switches, which are turned on and off in the regular development of every cell in the body, can be ...

New approach allows past data to be used to improve future climate projections

2012-11-29
Climate scientists are still grappling with one of the main questions of modern times: how high will global temperatures rise if the atmospheric concentration of carbon dioxide doubles. Many researchers are turning to the past because it holds clues to how nature reacted to climate change before the anthropogenic impact. The divergent results of this research, however, have made it difficult to make precise predictions about the impact of increased carbon dioxide on future warming. An international team of scientists have evaluated previously published estimates and assigned ...

'Dark core' may not be so dark after all

'Dark core' may not be so dark after all
2012-11-29
ATHENS, Ohio (Nov. 29, 2012)—Astronomers were puzzled earlier this year when NASA's Hubble Space Telescope spotted an overabundance of dark matter in the heart of the merging galaxy cluster Abell 520. This observation was surprising because dark matter and galaxies should be anchored together, even during a collision between galaxy clusters. Astronomers have abundant evidence that an as-yet-unidentified form of matter is responsible for 90 percent of the gravity within galaxies and clusters of galaxies. Because it is detected via its gravity and not its light, they call ...

The future looks bright: ONR, marines eye solar energy

2012-11-29
ARLINGTON, Va. —The Office of Naval Research (ONR) is looking to the sun for energy in an effort to help Marines do away with diesel-guzzling generators now used in combat outposts, officials announced Nov. 29. The Renewable Sustainable Expeditionary Power (RSEP) program seeks to create a transportable renewable hybrid system that can provide Marines with electricity for a 15-day mission without relying on fuel resupply convoys that often become targets for adversaries. "This program takes on a number of power-related challenges and ultimately will allow the Marine ...

Mild vibrations may provide some of the same benefits to obese people as exercise

2012-11-29
Bethesda, MD—If you're looking to get some of the benefits of exercise without doing the work, here's some good news. A new research report published online in The FASEB Journal shows that low-intensity vibrations led to improvements in the immune function of obese mice. If the same effect can be found in people, this could have clinical benefits for obese people suffering from a wide range of immune problems related to obesity. "This study demonstrates that mechanical signals can help restore an immune system compromised by obesity," said Clinton Rubin, Ph.D., study ...

Oceanic crust breakthrough: Solving a magma mystery

2012-11-29
Washington, D.C. — Oceanic crust covers two-thirds of the Earth's solid surface, but scientists still don't entirely understand the process by which it is made. Analysis of more than 600 samples of oceanic crust by a team including Carnegie's Frances Jenner reveals a systemic pattern that alters long-held beliefs about how this process works, explaining a crucial step in understanding Earth's geological deep processes. Their work is published in Nature on November 29. Magmas generated by melting of the Earth's mantle rise up below the oceanic crust and erupt on the Earth's ...

Children with higher intelligence less likely to report chronic widespread pain in adulthood

2012-11-29
Philadelphia, PA, November 29, 2012 – A UK-based study team has determined that there is a correlation between childhood intelligence and chronic widespread pain (CWP) in adulthood, according to a new study published in the December issue of PAIN®. About 10-15 percent of adults report CWP, a common musculoskeletal complaint that tends to occur more frequently among women and those from disadvantaged socioeconomic backgrounds. CWP is a core symptom of fibromyalgia and is one of the most common reasons for consulting a rheumatologist. "One psychological factor that could ...

Canada's first liver cell transplant takes place in Calgary

2012-11-29
CALGARY – A three-month-old Winnipeg girl has become the first patient in Canada to receive an experimental and potentially life-saving form of therapy to improve the function of her liver. Physicians at Alberta Children's Hospital, led by medical geneticist Dr. Aneal Khan, successfully completed a series of liver cell transplants earlier this month on patient Nazdana Ali. Nazdana was born last August with a Urea Cycle Disorder (UCD), a genetic disease that causes ammonia to build up in the body that, if untreated, would lead to brain damage and death. Ammonia is ...

Sources of E. coli are not always what they seem

2012-11-29
This press release is available in Spanish. U.S. Department of Agriculture (USDA) scientists have identified sources of Escherichia coli bacteria that could help restore the reputation of local livestock. Studies by Agricultural Research Service (ARS) scientist Mark Ibekwe suggest that in some parts of California, pathogens in local waterways are more often carried there via runoff from urban areas, not from animal production facilities. ARS is USDA's chief intramural scientific research agency, and this work supports the USDA priority of ensuring food safety. Even ...

The beginning of everything: A new paradigm shift for the infant universe

The beginning of everything: A new paradigm shift for the infant universe
2012-11-29
A new paradigm for understanding the earliest eras in the history of the universe has been developed by scientists at Penn State University. Using techniques from an area of modern physics called loop quantum cosmology, developed at Penn State, the scientists now have extended analyses that include quantum physics farther back in time than ever before -- all the way to the beginning. The new paradigm of loop quantum origins shows, for the first time, that the large-scale structures we now see in the universe evolved from fundamental fluctuations in the essential quantum ...

Precisely engineering 3-D brain tissues

2012-11-29
CAMBRIDGE, MA -- Borrowing from microfabrication techniques used in the semiconductor industry, MIT and Harvard Medical School (HMS) engineers have developed a simple and inexpensive way to create three-dimensional brain tissues in a lab dish. The new technique yields tissue constructs that closely mimic the cellular composition of those in the living brain, allowing scientists to study how neurons form connections and to predict how cells from individual patients might respond to different drugs. The work also paves the way for developing bioengineered implants to replace ...

Running too far, too fast, and too long speeds progress 'to finish line of life'

2012-11-29
Vigorous exercise is good for health, but only if it's limited to a maximum daily dose of between 30 and 50 minutes, say researchers in an editorial published online in Heart. The idea that more and more high intensity exercise, such as marathons, can only do you good, is a myth say the US cardiologists, and the evidence shows that it's likely to more harm than good to your heart. "If you really want to do a marathon or full distance triathlon, etc, it may be best to do just one or a few and then proceed to safer and healthier exercise patterns," they warn. "A routine ...

Can a genetic variation in the vitamin D receptor protect against osteoporosis?

Can a genetic variation in the vitamin D receptor protect against osteoporosis?
2012-11-29
New Rochelle, NY, November 29, 2012—Osteoporosis, or reduced bone mineral density that can increase the risk of fractures, may affect as many as 30% of women and 12% of men worldwide. One risk factor for osteoporosis is vitamin D deficiency. A modified form of the vitamin D receptor present in some individuals may lower their risk for developing osteoporosis, according to an article in Genetic Testing and Molecular Biomarkers, a peer-reviewed journal from Mary Ann Liebert, Inc., publishers. The article is available on the Genetic Testing and Molecular Biomarkers website. To ...

Post-divorce journaling may hinder healing for some

2012-11-29
Following a divorce or separation, many people are encouraged by loved ones or health-care professionals to keep journals about their feelings. But for some, writing in-depth about those feelings immediately after a split may do more harm than good, according to new research. In a study of 90 recently divorced or separated individuals, psychological scientist David Sbarra of the University of Arizona and colleagues found that writing about one's feelings can actually leave some people feeling more emotionally distraught months down the line, particularly those individuals ...

Drug may offer new approach to treating insomnia

2012-11-29
MINNEAPOLIS – A new drug may bring help for people with insomnia, according to a study published in the November 28, 2012, online issue of Neurology®, the medical journal of the American Academy of Neurology. The drug, suvorexant, blocks the chemical messengers in the brain called orexins, which regulate wakefulness. Other drugs for insomnia affect different brain receptors. Taking the drug suvorexant increased the amount of time people spent asleep during the night, according to the study. The study involved 254 people ages 18 to 64 who were in good physical and ...

Tiny algae shed light on photosynthesis as a dynamic property

2012-11-29
One of the first chemical reactions children learn is the recipe for photosynthesis, combining carbon dioxide, water and solar energy to produce organic compounds. Many of the world's most important photosynthetic eukaryotes such as plants did not develop the ability to combine these ingredients themselves. Rather, they got their light-harnessing organelles -- chloroplasts -- indirectly by stealing them from other organisms. In some instances, this has resulted in algae with multiple, distinct genomes, the evolutionary equivalent of a "turducken*." Chloroplasts originally ...

Morality-based judgments are quicker, more extreme than practical evaluations

2012-11-29
Judgments made after a moral evaluation are quicker and more extreme than the same judgment based on practical considerations, but morality-based evaluations can be more easily shifted and made with other considerations in mind, according to research published November 28 in the open access journal PLOS ONE by Jay Van Bavel and colleagues from New York University. Previous research has suggested that moral reasoning usually occurs after a person makes a decision, as a post hoc justification of their choice, rather than the basis for the decision itself. This new study ...

More omnivore dilemmas: Seasonal diet changes can cause reproductive stress in primates

More omnivore dilemmas: Seasonal diet changes can cause reproductive stress in primates
2012-11-29
When seasonal changes affect food availability, omnivores like blue monkeys adapt by changing their diets, but such nutritional changes may impact female reproduction, according to research published November 28 in the open access journal PLOS ONE by Steffen Foerster from Barnard College, and colleagues from Columbia University and the Smithsonian Institution. The authors found that levels of fecal glucocorticoids (fGC), a stress marker, increased when female monkeys shifted their diet towards lower quality fallback foods, whereas the levels decreased when the monkeys ...

Skeletons in cave reveal Mediterranean secrets

2012-11-29
Skeletal remains in an island cave in Favignana, Italy, reveal that modern humans first settled in Sicily around the time of the last ice age and despite living on Mediterranean islands, ate little seafood. The research is published November 28 in the open access journal PLOS ONE by Marcello Mannino and colleagues from the Max Planck Institute for Evolutionary Anthropology, Germany. Genetic analysis of the bones discovered in caves on the Egadi islands provides some of the first mitochondrial DNA data available for early humans from the Mediterranean region, a crucial ...

Scientists identify depression and anxiety biomarker in youths

2012-11-29
Scientists have discovered a cognitive biomarker – a biological indicator of a disease – for young adolescents who are at high risk of developing depression and anxiety. Their findings were published today, 28 November, in the journal PLOS ONE. The test for the unique cognitive biomarker, which can be done on a computer, could be used as an inexpensive tool to screen adolescents for common emotional mental illnesses. As the cognitive biomarker may appear prior to the symptoms of depression and anxiety, early intervention (which has proven to be one of the most effective ...
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