North Carolina State University researchers have come up with a new technique for improving the connections between stacked solar cells, which should improve the overall efficiency of solar energy devices and reduce the cost of solar energy production. The new connections can allow these cells to operate at solar concentrations of 70,000 suns worth of energy without losing much voltage as "wasted energy" or heat. Stacked solar cells consist of several solar cells that are stacked on top of one another. Stacked cells are currently the most efficient cells on the market, ...

Since its discovery in the early 1990s, the protein STAT1 (Signal Transducer and Activator of Transcription 1) has been found to be central in passing signals across immune cells, ensuring that our bodies react quickly and appropriately to threats from viruses or other pathogens. Animals without STAT1 are also prone to develop cancer, suggesting that STAT1 is somehow involved in protection against malignant cells. The STAT1 protein is known to be phosphorylated on at least two positions: phosphorylation of a particular tyrosine (tyr-701) is required for the protein to enter ...

Research into the rise in obesity associated with the burgeoning industrial and service sectors in low- and middle-income countries found that education is a key factor in reducing the negative impact on women's health. The study, conducted by researchers at UCL and published in the journal BMC Public Health, found that women with no formal education who were working in sedentary occupations were twice as likely to be 'centrally obese' – defined by measuring waist circumference – compared to women with no education working in agriculture. However, for women with at ...

WEST LAFAYETTE, Ind. - Researchers have taken detailed images and measurements of the morphing structure of a brain protein thought to play a role in Parkinson's disease, information that could aid the development of medications to treat the condition. The protein, called alpha synuclein (pronounced sine-yoo-cline), ordinarily exists in a globular shape. However, the protein morphs into harmful structures known as amyloid fibrils, which are linked to protein molecules that form in the brains of patients with neurodegenerative diseases. "The abnormal protein formation ...

A team of scientists from Southwest Research Institute (SwRI) has demonstrated that frozen water in the form of snow or frost can melt to form debris flows on sunward-facing slopes of sand dunes in the Alaskan arctic at air temperatures significantly below the melting point of water. The debris flows consist of sand mixed with liquid water that cascade down steep slopes. SwRI scientists made their observations at the Great Kobuk Sand Dunes, in Kobuk Valley National Park, Alaska. This site serves as an Earth-based cold-climate "analog" to dunes on Mars. Debris flows formed ...

WASHINGTON, D.C. Sept. 6, 2013 -- Researchers have developed a new technique to produce thin films of germanium crystals -- key components for next-generation electronic devices such as advanced large-scale integrated circuits and flexible electronics, which are required for gadgets that move or bend. Unlike conventional methods, the new approach does not require high temperatures or other crystals to act as seeds to grow the germanium crystal. And, the researchers say, the new method can be used to produce germanium films with a very large area, allowing for more potential ...

London -- Long-term confinement is not a humane option for the control of feral and stray or abandoned cat populations, according to new guidelines issued by the International Society of Feline Medicine (ISFM) in its Journal of Feline Medicine and Surgery published by SAGE. According to the society, which is the veterinary division of the charity International Cat Care, culling to control cat populations is also rarely effective or acceptable, whereas trap–neuter–return programmes and rehoming (in appropriate cases) can offer effective and humane solutions, but need to ...

WASHINGTON, D.C. Sept. 6, 2013 -- A team of researchers from Uppsala University in Sweden has designed a microplasma source capable of exciting matter in a controlled, efficient way. This miniature device may find use in a wide range of applications in harsh environments, but can also help revolutionize archaeology. As the researchers describe in the Journal of Applied Physics, produced by AIP Publishing, their new device offers many advantages, such as electromagnetic compatibility, an integrated fluidic system, and Langmuir probes for plasma diagnostics. At the ...

NASA's Tropical Rainfall Measuring Mission satellite known as TRMM passed over Tropical Storm Lorena from its orbit in space on Friday, Sept. 6 and measured the rate in which rain is falling from the storm. Lorena was soaking some areas of Mexico's west coast and is headed for landfall in Baja California, Mexico. On Friday, Sept. 6, a tropical storm warning was in effect for Baja California Sur from Agua Blanca to Buenavista, and a tropical storm watch was in effect for Baja California Sur North of Agua Blanca to Santa Fe. Tropical Depression 12E intensified into Tropical ...

Orphaned chimpanzees are less socially competent than chimpanzees who were reared by their mother. Researchers from the Max Planck Institute for Psycholinguistics in Nijmegen, The Netherlands, observed that orphaned chimpanzees frequently engaged in social play, but their play bouts were much shorter and resulted in aggression more often. Apparently, chimpanzee mothers endow their offspring with important social skills. It may not come as a surprise, but mother chimpanzees seem to be important for the development of social skills in young chimpanzees. "Orphaned chimpanzees ...

The Rim Fire, now three weeks old, is still burning through Yosemite Forest. The blaze, thought to have been started by a hunter's illegal fire, has consumed over 246,000 acres of land. At present, this fire is 80% contained and is expected to be fully contained by September 20, 2013, over a month since it first began. According to Inciweb.org: "Fire activity is expected to intensify Friday as unburned areas within control lines are consumed on the Rim Fire. Hotter and drier weather conditions will persist through Sunday increasing the chance of spotting of embers ...

Coating artery-opening stents with a new compound may someday eliminate a common side effect of the treatment, according to preliminary research in the American Heart Association journal Arteriosclerosis, Thrombosis, and Vascular Biology. Stents are tiny mesh tubes that prop open clogged arteries so blood will flow freely to heart muscle, relieving chest pain and reducing the risk of heart attack. But implanting a stent damages the inner lining of the artery, triggering overgrowth of smooth muscle in the middle layer of the artery, a process that can re-narrow the passageway ...

Washington, DC -- New research has uncovered a process that is defective in patients with autosomal dominant polycystic kidney disease, a common cause of kidney failure. The findings, which appear in an upcoming issue of the Journal of the American Society of Nephrology (JASN), point to a new potential strategy for preventing and treating the disease. Polycystic kidney disease (PKD), the fourth leading cause of kidney failure worldwide, comes in two forms: autosomal dominant polycystic kidney disease (ADPKD) develops in adulthood and is quite common, while autosomal recessive ...

Germ-free mice that received gut bacteria from obese humans put on more weight and accumulated more fat than mice that were given bacteria from the guts of lean humans, according to a new study. This finding, which demonstrates the transmission of physical and metabolic traits via communities of microbes in the gut, depends on the rodents' diet. And the researchers responsible suggest that it may represent an important step toward developing new personalized probiotic and food-based therapies for the treatment or prevention of obesity. This new research follows on the ...

This news release is available in Spanish, Japanese, Arabic and Chinese. Can the separate international commitments of protecting 17% of the planet's terrestrial surface and of conserving 60% of the world's plant species within these protected areas be met simultaneously by 2020? A new study suggests that they can—but only if researchers and conservationists do more to safeguard particularly hot spots of biodiversity. According to Lucas Joppa from Microsoft Research in Cambridge, England, and colleagues from the United Kingdom and the United States, the regions ...

A rare, emerging fungal disease that is spreading throughout Canada and Northwestern USA can easily pass its deadly genes to related fungal strains within the species but less readily to more distant relatives, according to a study part-funded by the Wellcome Trust. The findings will help to understand the origins of infectious outbreaks and predict the likelihood of the disease spreading to other populations and geographical areas. Cryptococcus gattii is a type of fungus that was previously only found in warmer climates throughout the tropics. However, since 1999 outbreaks ...

CINCINNATI – A biomarker test developed initially to identify early acute kidney injury (AKI) after surgery has been shown to successfully detect AKI in emergency room patients with a variety of urgent health issues. In a study published online Sept. 5 in the Clinical Journal of the American Society of Nephrology, the findings expand the overall utility and potential medical settings for using the test, according to researchers. The test measures the protein neutrophil gelatinase-associated lipocalin (NGAL) as a biomarker of early AKI. It was invented by researchers ...

Certification of products from aquatic farming - aquaculture – is contributing to sustainable production, but it also has serious limits. Therefore it should be seen as one approach among many for steering aquaculture toward sustainability. This is argued by an international team of researchers in a paper published in Science on September 6th. Aquaculture is one of the fastest growing global food production systems, and now contributes around 13% of world animal-protein supply. It provides almost half of the world's supply of seafood. The rapid expansion of the sector ...

London -- The unhappiness of being in a bad job is strongly linked to people's decision to leave permanent work for the uncertain world of temporary employment, the British Sociological Association's conference in Warwick heard today. An analysis of data collected from almost 69,000 British people from 1991-2009 found that higher levels of anxiety and distress were a good indicator that people in a permanent job would leave to go into temping, casual work or seasonal labour. The research was carried out by Professor Don Webber and Dr Michail Veliziotis of the University ...

DURHAM, N.C. -- Protecting key regions that comprise just 17 percent of Earth's land may help preserve more than two-thirds of its plant species, according to a new Duke University-led study by an international team of scientists. The researchers from Duke, North Carolina State University and Microsoft Research used computer algorithms to identify the smallest set of regions worldwide that could contain the largest numbers of plant species. They published their findings today in the journal Science. "Our analysis shows that two of the most ambitious goals set forth ...

To protect consumers, screening shellfish for fungal toxins is important, say scientists. Research, published today (06 September) in the Society for Applied Microbiology (SfAM) journal, Letters in Applied Microbiology, shows that in an area with contamination by strains of Penicillium fungus, bivalve molluscs (clams, oysters, mussels, scallops, etc.) will contain toxins at much higher levels that are found in the surrounding environment. Professor Yves François Pouchus, from the University of Nantes, France, led the research, he said "A high level of toxins in the ...

VIDEO: Dr. Jean Hébert has found that inner-ear dysfunction can directly cause neurological changes that increase hyperactivity. The paper was published online September 6, 2013, in Science. Dr. Hébert is professor... Click here for more information. September 5, 2013 — (Bronx, NY) — Behavioral abnormalities are traditionally thought to originate in the brain. But a new study by researchers at Albert Einstein College of Medicine of Yeshiva University has found that ...

Astronomers using a worldwide network of radio telescopes have found strong evidence that a powerful jet of material propelled to nearly light speed by a galaxy's central black hole is blowing massive amounts of gas out of the galaxy. This process, they said, is limiting the growth of the black hole and the rate of star formation in the galaxy, and thus is a key to understanding how galaxies develop. Astronomers have theorized that many galaxies should be more massive and have more stars than is actually the case. Scientists proposed two major mechanisms that would slow ...

Berkeley — Scientists at the University of California, Berkeley, have detected previously unknown channels of slow-moving seismic waves in Earth's upper mantle, a discovery that helps explain "hotspot volcanoes" that give birth to island chains such as Hawaii and Tahiti. Unlike volcanoes that emerge from collision zones between tectonic plates, hotspot volcanoes form in the middle of the plates. The prevalent theory for how a mid-plate volcano forms is that a single upwelling of hot, buoyant rock rises vertically as a plume from deep within Earth's mantle the layer found ...

SCIENTISTS at the Zoological Society of London (ZSL) have devised a novel method to identify suitable new homes for animals under threat from climate change. Conservation scientists used their knowledge on species ecology to create habitat suitability maps and correctly identify sites that will remain viable in the future regardless of changing climate. However, the key for success is to understand, and account for, the link between variation in species population size, climate and how the climate may change. Almost half of all bird and amphibian species are believed ...