HOUSTON, March 7, 2011 – Cleaning up pollution, protecting soil from erosion and maintaining species-rich ecosystems are some of the goals of a computational ecology project by a University of Houston (UH) scientist and his team. Published recently in a top journal, the work sheds light on a new method to speed up research in the ecology of plants. Marc Garbey, a professor of computer science and mathematics at UH, and his fellow researchers describe these findings in a paper titled "Large scale parameter study of an individual-based model of clonal plant with volunteer ...

Burkitt's lymphoma is one of the most aggressive tumors affecting humans. Multiple alterations in genes that regulate cell proliferation rate explain its aggressive behavior. A new study reveals new molecular insight into the understanding and treatment of Burkitt`s lymphoma. The new finding concentrates on a genetic locus -- a piece of DNA with one or more genes which is the specific location of a gene or DNA sequence on a chromosome -- called INK4a/ARF locus. This locus encodes two important tumor suppressor genes, p16 and p14, and is usually inactivated in human tumors ...

Increased export of Brazilian beef indirectly leads to deforestation in the Amazon. New research from Chalmers and SIK that was recently published in Environmental Science & Technology shows that impact on the climate is much greater than current estimates indicate. The researchers are now demanding that indirect effect on land be included when determining a product's carbon footprint. "If this aspect is not taken into consideration, there is a risk of the wrong signals being sent to policy makers and consumers, and we become guilty of underestimating the impact Brazilian ...

LA JOLLA, Calif., March 7, 2011 – In the past few months, a slew of papers have indicated that the therapeutic potential of a promising type of stem cell, called induced pluripotent stem (iPS) cells, might be limited by reprogramming errors and genomic instability. iPS cells are engineered by reprogramming fully differentiated adult cells, often skin cells, back to a primitive, embryonic-like state. Given these problems, a team of researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham), Chung-Ang University in Korea, the University of British Columbia, ...

During embryonic development, sensory and motor fibers interact to form nerves in the limbs. The research team led by Dr. Andrea Huber Brösamle of the Institute of Developmental Genetics of Helmholtz Zentrum München has now elucidated how this interaction functions at the molecular level: The cell surface receptor neuropilin-1 is present in both sensory and motor nerve fibers and controls their interaction in order to correctly regulate growth. "We observed that motor and sensory axons were both able to guide and lead the formation of the spinal nerves of the arms and ...

"Many people are now saying: 'Is it really that easy? Then why didn't anyone think of it a long time ago?' But you have to have the right idea at the right time," says Annette Röttger, physicist at the Physikalisch-Technische Bundesanstalt (PTB), in a pleased way. Annette Röttger and her scientific team managed to do something that was previously thought to be impossible: they developed a primary standard for the measurement of short-lived radioactive thoron. Thoron measuring instruments from all over the world will now be calibrated at this unique device which is currently ...

Poor diet during pregnancy increases offspring's vulnerability to the effects of aging, new research has shown for the first time. The research, by scientists from the University of Cambridge, provides important insight into why children born to mothers who consumed an unhealthy diet during pregnancy have an increased risk of type 2 diabetes (a significant contributing factor to heart disease and cancer) later in life. "What is most exciting about these findings is that we are now starting to really understand how nutrition during the first nine months of life ...

Almost one in five UK doctors has had direct experience of an incompetent or poorly performing colleague in the past three years, finds a survey of professional values, published online in BMJ Quality & Safety. Nearly three out of four of these doctors said they had sounded the alarm, but one in three of those who had not done so gave fear of retribution as the reason. The study authors canvassed the views of almost 2,000 US doctors working in primary care and hospital medicine and over 1,000 of their UK peers in 2009 about various aspects of professional behaviour. Topics ...

High levels of "good" (high density lipoprotein) HDL cholesterol seem to cut the risk of bowel cancer, suggests research published online in Gut. The association is independent of other potentially cancer-inducing markers of inflammation in the blood. The researchers base their findings on participants in the European Prospective Investigation into Cancer and Nutrition (EPIC) study. This is tracking the long term impact of diet on the development of cancer in more than half a million people in 10 European countries, including the UK. Some 1,200 people who developed ...

Traditional Chinese acupuncture curbs the severity of hot flushes and other menopausal symptoms, suggests a small study published today in Acupuncture in Medicine. The effects did not seem to be related to changes in levels of the hormones responsible for sparking the menopause and its associated symptoms, the study shows. The authors base their findings on 53 middle aged women, all of whom were classified as being postmenopausal - they had spontaneously stopped having periods for a year. Their somatic (hot flushes) urogenital (vaginal dryness and urinary tract infection) ...

Scientists at the European Molecular Biology Laboratory (EMBL) and the German Cancer Research Centre (DKFZ), both in Heidelberg, Germany, have developed a new method that uncovers the combined effects of genes. Published online today in Nature Methods, it helps understand how different genes can amplify, cancel out or mask each others' effects, and enables scientists to suggest genes that interfere with each other in much the same manner that facebook suggests friends. To understand the connections between genetic make-up and traits like disease susceptibility, scientists ...

This release is available in German. "Children may be a long-term investment in happiness," says MPIDR demographer Mikko Myrskylä. Together with Rachel Margolis from the University of Pennsylvania in Philadelphia, USA, he published the new study in the latest issue of the journal "Population and Development Review". It shows a global trend: while for parents under 30 the level of happiness decreases with the first and each additional child, mothers and fathers aged 30 to 39 feel as happy as childless peers until they have four children or more. From age 40 onwards parents ...

A tropical frog – the only one of its kind in the world – is providing conservationists with exclusive insights into the genetic make-up of its closest endangered relatives. University of Manchester scientists have allowed two critically endangered species of Central American Leaf frogs to interbreed, producing the unique frog – a hybrid of the two species. DNA tests using a harmless mouth swab showed that the two parent frogs were actually very closely related despite being different species. The findings are important because DNA tests on frogs of the same species ...

Scientists on the Norwich Research Park have sequenced the genome of a novel strain of Clostridium botulinum, one of the most dangerous pathogens known to man. The strain produces an unusual botulinum neurotoxin, known as type A5 neurotoxin, which was isolated by the Health Protection Agency (HPA), following a case of wound botulism. Professor Mike Peck and his research group at the Institute of Food Research (IFR) study Clostridium botulinum. Their expertise is crucial for preventing food poisoning outbreaks in the UK and internationally and to understanding the threat ...

Improved environmental conditions have enabled the otter (Lutra lutra) to spread in Andalusia over the past 20 years. However, the recovery of populations of this mammal has been "relatively" slow, and in some areas the impact of human activities still prevents the species from gaining a foothold. "The high level of 'humanisation' of the landscape still acts as a strong impediment to the expansion of the otter, to such an extent that it is preventing the species from fully recovering its original distribution area", Miguel Clavero, lead author of the study and a researcher ...

TORONTO, ON., March 7, 2011—Screening every woman who comes to a health care centre does increase the number who acknowledge they have been abused by their partners, a new study confirms. The study, led by Patricia O'Campo, director of the Centre for Inner City Research at St. Michael's Hospital, represents a major reversal of thinking about the value of universal screening programs for domestic abuse or intimate partner violence. Until now, the research and health care policy communities felt there was insufficient evidence to support such programs. O'Campo reviewed ...

New research from North Carolina State University shows how attempts to define the South by Republicans and Democrats may have set the stage for President Obama's victories in Southern states – and shaped the way Americans view themselves. "Every presidential election is a chance to discuss what it means to be American," says Dr. Christina Moss, teaching assistant professor of communication at NC State and author of a paper on the research. "The South garnered a great deal of attention in the 2004 election season, and the narratives from that election may provide clues ...

New York / Heidelberg, 7 March 2011 A new study published in the Annals of Biomedical Engineering shows that a MEMS thermal sensor deployed by an angiogram catheter can detect the earliest stages of atherosclerosis. The MEMS thermal sensor used convective heat transfer to detect pre-atherosclerotic regions of arteries that otherwise showed no clinical signs of atherosclerosis. Although diet and lifestyle changes can often reverse atherosclerosis in its earliest stages, no real-time means of detecting pre-atherosclerotic regions exists. The MEMS sensor method has the ...

The main aim of this study, carried out in collaboration with the University of California at San Diego (UCSD) and Stanford University (both in the US) is to characterize some aspects of gastropod (snails and slugs) locomotion to basically respond to one question: To what extent do they depend on the physical properties of their mucus to propel themselves forward? This question is fundamental when applying the studied mechanism to the construction of biomimetic robots. "The aim is for the robot to be able to propel itself in any fluid mucus without having to carry its ...

PROVIDENCE, R.I. [Brown University] — Experiments by Brown University psychologists have produced positive evidence that people often think about positive evidence the wrong way — if it is weak. Defying logic, people given weak evidence can regard predictions supported by that evidence as less likely than if they aren't given the evidence at all. The finding, described in a paper published in advance online in the journal Cognition, has serious implications for professional persuaders such as marketers and can help explain public perceptions of policy and the rhetoric ...

Fumaric acid salts have been in use against severe psoriasis for a long time. About ten years ago, researchers in Bochum speculated that they may also have a favourable effect on Multiple Sclerosis (MS) as a result of their TH2 polarizing mechanisms. In parallel to phase III studies, research is actively searching for the precise effective mechanisms. This has now been achieved by a neuroimmunological group at Bochum: fumaric acid salts detoxify radicals released during the inflammation process. In this way, they protect nerve and glial cells. Neurologists at the Ruhr ...

When people communicate, the way they move has as much to do with what they're saying as the words that come out of their mouths. But what about when robots communicate with people? How can robots use non-verbal communication to interact more naturally with humans? Researchers at the Georgia Institute of Technology found that when robots move in a more human-like fashion, with one movement leading into the next, that people can not only better recognize what the robot is doing, but they can also better mimic it themselves. The research is being presented today at the Human-Robot ...

WASHINGTON – Exposure via the media to activities such as street racing, binge drinking and unprotected sex is linked to risk-taking behaviors and attitudes, according to a new analysis of more than 25 years of research. The connection between risk taking and risk-glorifying media – such as video games, movies, advertising, television and music – was found across differing research methods, media formats and various forms of risky behaviors, according to an article published online in Psychological Bulletin, a journal of the American Psychological Association. The effects ...

KINGSTON, R.I. – March 7, 2011 – For those of us living the frenetic modern lifestyle, sitting in one place for a long period might seem like a vacation. But for those who are retired, it can lead to health complications. Patricia Burbank, professor of nursing at the University of Rhode Island, realized that there is a need to get older adults moving. The actual idea was inspired by Burbank's own aunt, a 97-year-old woman living on her own. "She loves hearing from her family and personal messages really resonate with her. How much better would it be to develop a ...

COLUMBIA, Mo. – America's 75 million aging adults soon will face decisions about where and how to live as they age. Current options for long-term care, including nursing homes and assisted-living facilities, are costly and require seniors to move from place to place. University of Missouri researchers have found that a new strategy for long-term care called Aging in Place is less expensive and provides better health outcomes. Adults want to remain healthy and independent during their senior years, but traditional long-term care often diminishes seniors' independence ...