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Mounting research shows increased health risks from volcanic air pollution

Mounting research shows increased health risks from volcanic air pollution
2010-10-21
RENO, Nev. – Kilauea Volcano on Hawaii's big island has been erupting on its east rift since 1983. But, in March 2008, an additional eruption vent opened at the volcano's summit, resulting in about triple the amount of sulfur dioxide gas (SO2) emissions drifting to the local community of Ka'u, raising health concerns over the risks associated with exposure to "vog," as the islanders refer to this volcanic air pollution. A University of Nevada, Reno researcher seized the opportunity to build upon her previous research of health risks associated with exposure to vog. Bernadette ...

Elusive protein may lead the fight against inflammatory disease

2010-10-21
A husband and wife research team from Melbourne, Australia, have identified a protein that may be a key therapy for many inflammatory diseases, including those affecting premature babies. In the October edition of Nature Immunology, Drs Marcel and Claudia Nold, from the Monash Institute of Medical Research, describe how a protein, interleukin 37 (IL‐37), reacts when an inflammatory response is detected in the body. "Our bodies mount an inflammatory response to protect against an infection, such as bacteria or viruses. However, if uncontrolled, inflammation ...

Worst coral death strikes at SE Asia

2010-10-21
International marine scientists say that a huge coral death which has struck Southeast Asian and Indian Ocean reefs over recent months has highlighted the urgency of controlling global carbon emissions. Many reefs are dead or dying across the Indian Ocean and into the Coral Triangle following a bleaching event that extends from the Seychelles in the west to Sulawesi and the Philippines in the east and include reefs in Sri Lanka, Burma, Thailand, Malaysia, Singapore, and many sites in western and eastern Indonesia. "It is certainly the worst coral die-off we have seen ...

University of Virginia chemical engineers use gold to discover breakthrough for creating biorenewable chemicals

2010-10-21
October 19, 2010 — University of Virginia chemical engineers Robert J. Davis and Matthew Neurock have uncovered the key features that control the high reactivity of gold nanoparticles in a process that oxidizes alcohols in water. The research is an important first step in unlocking the potential of using metal catalysts for developing biorenewable chemicals. The scientific discovery could one day serve as the foundation for creating a wide range of consumer products from biorenewable carbon feedstocks, as opposed to the petroleum-based chemicals currently being used as ...

Short-range scattering in quantum dots

2010-10-21
Washington, D.C. (October 19, 2010) -- Chinese researchers, reporting in the Journal of Applied Physics, published by the American Institute of Physics, have described a new breakthrough in understanding the way electrons travel around quantum dots. This might lead to promising new fabrication methods of novel quantum devices. Guodong Li and colleagues at the National Center for Nanoscience and Technology in Beijing carried out an experiment using self-assembled quantum dots and a two-dimensional electron gas, and then fit the data to a model to find out the type of ...

A forest of nanorods

2010-10-21
WASHINGTON, D.C., (Oct. 20, 2010) -- Just as landscape photographs shot in low-angle light dramatically accentuate subtle swales and mounds, depositing metal vapors at glancing angles turns a rough surface into amazing nanostructures with a vast range of potential properties. For decades, vapor deposition has been a standard technique for creating modern microelectronic circuits. But nearly all of industry's efforts have been devoted to making structures as flat and smooth as possible. Rather than placing metal sources in the high-noon position used to make featureless ...

'Lubricin' molecule discovered to reduce cartilage wear

2010-10-21
WASHINGTON, D.C., (Oct. 20, 2010) -- A team of researchers in North Carolina has discovered that lubricin, a synovial fluid glycoprotein, reduces wear to bone cartilage. This result, which has implications for the treatment of sufferers of osteoarthritis, will be presented today at the AVS 57th International Symposium & Exhibition, taking place this week at the Albuquerque Convention Center in New Mexico. Osteoarthritis is the most common form of arthritis, the degenerative joint disease. It mostly affects cartilage, the slippery tissue that covers the ends of bones ...

Measuring changes in rock

2010-10-21
WASHINGTON, D.C., (Oct. 20, 2010) -- The capture and storage of carbon dioxide in deep geologic formations, a strategy for minimizing the impacts of greenhouse gases on global warming, may currently be technologically feasible. But one key question that must be answered is the ability of subsurface materials to maintain their integrity in the presence of supercritical carbon dioxide -- a fluid state in which the gas is condensed at high temperature and pressure into a liquid. A research team at the Pacific Northwest National Laboratory has developed tools in EMSL, a ...

Rare but deadly virus reveals potential weakness in new study

2010-10-21
PROVIDENCE, R.I. [Brown University] — The JC polyomavirus doesn't strike very often, but it's a mean bug that preys on people with weakened immune systems, including people with AIDS, and almost always kills them. Now an international team of scientists at Brown University, the University of Tübingen in Germany, and Imperial College in London has found a potential Achilles Heel and painted a target on it: The virus must bind to a very specific sugar molecule dangling from the side of the brain cells it attacks. Like the rebel forces in the 1977 classic movie Star Wars, ...

Neurogenetics research sheds light on the causes of neurological disease

2010-10-21
The last two decades have seen tremendous progress in understanding the genetic basis of human brain disorders. Research developments in this area have revealed fundamental insights into the genes and molecular pathways that underlie neurological and psychiatric diseases. In a new series of review articles published by Cell Press in the October 21 issue of the journal Neuron, experts in the field discuss exciting recent advances in neurogenetics research and the potential implications for the treatment of these devastating disorders. Genetic discoveries have transformed ...

Gene therapy may be powerful new treatment for major depression

2010-10-21
NEW YORK (Oct. 20, 2010) -- In a report published in the Oct. 20 issue of Science Translational Medicine, researchers at NewYork-Presbyterian Hospital/Weill Cornell Medical Center say animal and human data suggest gene therapy to the brain may be able to treat patients with major depression who do not respond to traditional drug treatment. The researchers hope to rapidly translate their findings into a human clinical trial using the same kind of gene therapy modality the investigators have pioneered to treat Parkinson's disease. A 45-patient randomized blinded phase II ...

Surgical aortic valve replacement should remain the standard treatment for aortic stenosis

2010-10-21
(Boston) - Despite the promising results of the "Placement of Aortic Transcatheter Valves (PARTNER) trial," featured in the Oct. 21 issue of the New England Journal of Medicine, a cardiothoracic surgeon from Boston Medical Center (BMC) believes that surgical aortic-valve replacement should remain the standard treatment of aortic stenosis. In the accompanying editorial, the author argues that Transcatheter aortic-valve implantation (TAVI) should be reserved for patients at inordinately high risk who are not suitable candidates for surgery and who have decreased life expectancy. ...

Energy revolution key to complex life

2010-10-21
The evolution of complex life is strictly dependent on mitochondria, the tiny power stations found in all complex cells, according to a new study by Dr Nick Lane, from UCL (University College London), and Dr William Martin, from the University of Dusseldorf. "The underlying principles are universal. Energy is vital, even in the realm of evolutionary inventions," said Dr Lane, UCL Department of Genetics, Evolution and Environment. "Even aliens will need mitochondria." For 70 years scientists have reasoned that evolution of nucleus was the key to complex life. Now, in ...

Star, not so bright

2010-10-21
In a galaxy far away, an exceptionally massive black hole is traveling around a massive star in an unusually tight orbit. Also odd, the star is not as bright as it should be. Astronomers have puzzled over this X-ray binary system, named M33 X-7, but no one could explain all of its features. Now a Northwestern University research team has. The researchers have produced a model of the system's evolutionary history and formation that explains all of the system's observational characteristics: the tight orbit, the large masses of the star and black hole, the X-ray luminosity ...

New space research settles years of scientific debate

2010-10-21
New space research published this week (Thursday 21 October) in the journal Nature, has settled decades of scientific debate. Researchers from the University of California (UCLA) and British Antarctic Survey (BAS) have found the final link between electrons trapped in space and the glow of light from the upper atmosphere known as the diffuse aurora. The research will help us understand 'space weather', with benefits for the satellite, power grid and aviation industries, and how space storms affect the Earth's atmosphere from the top down. Scientists have long understood ...

Clearing the cosmic fog

Clearing the cosmic fog
2010-10-21
A European team of astronomers using ESO's Very Large Telescope (VLT) has measured the distance to the most remote galaxy so far. By carefully analysing the very faint glow of the galaxy they have found that they are seeing it when the Universe was only about 600 million years old (a redshift of 8.6). These are the first confirmed observations of a galaxy whose light is clearing the opaque hydrogen fog that filled the cosmos at this early time. The results will be presented at an online press conference with the scientists on 19 October 2010, and will appear in the 21 October ...

UT MD Anderson scientists show TAp63 suppresses cancer metastasis

2010-10-21
HOUSTON - Long overshadowed by p53, its famous tumor-suppressing sibling, the p63 gene does the tougher, important job of stifling the spread of cancer to other organs, researchers at The University of Texas MD Anderson Cancer Center report in the Oct. 21 issue of Nature. Not only does a specific form of p63 protein block metastasis, but it does so by activating the enzyme Dicer, which plays a pivotal role in the creation of micro RNAs, tiny bits of RNA that regulate a host of cellular processes. "p63 is a master regulator of metastasis, an important role in its own ...

Mount Sinai researchers find potential therapeutic target across a range of cancer types

2010-10-21
Researchers from Mount Sinai School of Medicine, in collaboration with investigators of the National Institute of Health and Medical Research (INSERM) of France led by Nicolae Ghinea, PhD, have found a common link among several malignant tumor types in all grades of cancer. This breakthrough may ultimately provide a new diagnostic or therapeutic target to detect cancer early or stop tumor growth. The study is published in the October 21 issue of The New England Journal of Medicine. The team discovered that a hormone receptor typically found in human reproductive organs ...

New tumor proteins may identify a range of cancers early

2010-10-21
COLUMBUS, Ohio – A new study led by Ohio State University cancer researchers describes a novel cancer-specific protein that is present in a broad range of cancer types and at all stages of tumor development, from premalignant cells to metastatic tumor cells. If verified, the antigen could serve as a marker for the early detection and treatment of primary and metastatic tumors, and provide a target for the development of anticancer therapies, the researchers say. In addition, a vaccine designed to target these cancer-cell proteins, called Piwil2-like (PL2L) proteins, ...

New industrial application for revolutionary forensic metal fingerprinting technique

New industrial application for revolutionary forensic metal fingerprinting technique
2010-10-21
Groundbreaking research into fingerprint detection developed at the University of Leicester now has an industrial application, thanks to a new invention by the scientist who developed the technique. Dr John Bond's method of identifying fingerprints on brass bullet-casings, even after they have been wiped clean, was based on the minuscule amounts of corrosion which can be caused by sweat. First announced in 2008, this breakthrough was cited as one of the technologies 'most likely to change the world' by a panel of experts for BBC Focus magazine and was included in Time ...

NTU researchers develop world's smallest on-chip low-pass filter

NTU researchers develop worlds smallest on-chip low-pass filter
2010-10-21
A research team from Nanyang Technological University (NTU) has successfully designed the world's smallest on-chip low-pass filter which is 1,000 times smaller than existing off-chip filters. A low-pass filter is a circuit that allows low-frequency signals to pass through while reducing unwanted high-frequency signals from passing through. Compared to existing off-chip filters, which are discrete and bulky components, on-chip filters occupy a small area on integrated circuit chips, which can be found in portable devices such as mobile phones, laptops, vehicle-mounted ...

Measuring sea-level rise in the Falklands

2010-10-21
Sea levels around the Falkland Islands in the South Atlantic have risen since the mid nineteenth century and the rate of sea-level rise has accelerated over recent decades, according to newly published research. The findings are as expected under global warming and consistent with observations elsewhere around the globe. "We have been fortunate in being able to compare modern sea-level measurements obtained from tide gauges and from satellite radar altimeters with historical measurements made at Port Louis in the Falkland Islands in 1842," explained researcher Prof. Philip ...

Eating mostly whole grains, few refined grains linked to lower body fat

2010-10-21
BOSTON (October 20, 2010) - People who consume several servings of whole grains per day while limiting daily intake of refined grains appear to have less of a type of fat tissue thought to play a key role in triggering cardiovascular disease and type 2 diabetes, a new study suggests. Researchers at the Jean Mayer USDA Human Nutrition Researcher Center on Aging (USDA HNRCA) at Tufts University observed lower volumes of visceral adipose tissue (VAT) in people who chose to eat mostly whole grains instead of refined grains. "VAT volume was approximately 10 % lower in adults ...

Cancer: Discovery of a very promising biological marker

2010-10-21
The follicle stimulating hormone, FSH, targets the human reproductive organs: the ovaries and testicles. In women, it stimulates maturation of ovarian follicles and production of oestrogens (via its action on granulosa cells). In men, it stimulates production of spermatozoa (via its action on the Sertoli cells). FSH receptor, which was the subject of the work carried out by the Inserm researchers, is normally only found in cells stimulated by FSH (granulosa cells in women and Sertoli cells in men). However, it is also present in very small quantities in the blood vessels ...

Small is beautiful in hydroelectric power plant design, and good for the environment

Small is beautiful in hydroelectric power plant design, and good for the environment
2010-10-21
Hydroelectric power is the oldest and the "greenest" source of renewable energy. In Germany, the potential would appear to be completely exploited, while large-scale projects in developing countries are eliciting strong criticism due to their major impact on the environment. Researchers at Technische Universitaet Muenchen (TUM) have developed a small-scale hydroelectric power plant that solves a number of problems at the same time: The construction is so simple, and thereby cost-efficient, that the power generation system is capable of operating profitably in connection ...
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