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281 articles from THURSDAY 5.7.2012

• THURSDAY 5. JULY, 2012
• 06:00 First direct evidence that elemental fluorine occurs in nature

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  Fluorine is the most reactive chemical element. Until now the accepted scientific doctrine was, that therefore it cannot exist in nature in its elemental form. A team of chemists from Munich has now, for the first time, successfully identified natural elemental fluorine in a special fluorite, the "fetid fluorite" or "antozonite." They report their results in the international edition of the scientific journal Angewandte Chemie.  

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• 06:00 Gladstone scientists identify critical process in stem cell development

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  Scientists at the Gladstone Institutes have discovered that environmental factors critically influence the growth of a type of stem cell--called an iPS cell--that is derived from adult skin cells. This discovery offers newfound understanding of how these cells form, while also advancing science closer to stem cell-based therapies to combat disease.  

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• 06:00 Higher but not lower doses of vitamin D are effective in fracture risk reduction in older adults

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  Based on the results of a pooled analysis of 11 unrelated randomized clinical trials investigating vitamin D supplementation and fracture risk in more than 31,000 older adults, Bess Dawson-Hughes, M.D., a research scientists at Tufts University, says higher doses of vitamin D may be the most beneficial in reducing bone fractures in this age group.  

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• 06:00 How a protein meal tells your brain you’re full

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  Feeling full involves more than just the uncomfortable sensation that your waistband is getting tight. Investigators reporting online on July 5th in the Cell Press journal Cell have now mapped out the signals that travel between your gut and your brain to generate the feeling of satiety after eating a protein-rich meal. Understanding this back and forth loop between the brain and gut may pave the way for future approaches in the treatment and/or prevention of obesity.  

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• 06:00 Jekyll and Hyde bacteria aids or kills, depending on chance

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  Living in the guts of worms are seemingly innocuous bacteria that contribute to their survival. With a flip of a switch, however, these same bacteria transform from harmless microbes into deadly insecticides. In the current issue of Science, Michigan State University researchers led a study that revealed how a bacteria flips a DNA switch to go from an upstanding community member in the gut microbiome to deadly killer in insect blood.  

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• 06:00 Like it or not, Facebook and friends can be used to influence health behavior

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  Whether the goal is to curb smoking at a local school or to reduce the spread of sexually transmitted diseases within a community, it is important to understand the social structure of the group and the dynamics of influence at play, according to public health research from the University of Southern California.  

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• 06:00 Loss of protein SPDEF allows prostate cancer cells to gain foothold at possible sites of metastasis

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  Prostate cancer kills only by metastasis to other tissues. A study published online July 2 shows likely mechanism required for this metastasis: cells' loss of protein SPDEF. The presence of SPDEF could be used to recognize prostate cancers that can't kill and so don't require treatment. Adding SPDEF back to cancer cells that have lost it may remove cells' ability to metastasize.  

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• 06:00 miR loss may power maligant transformation in chronic leukemia

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  This study shows that loss of a particular molecule in chronic lymphocytic leukemia (CLL) shuts down normal cell metabolism and turns up alternative mechanisms that enable cancer cells to produce the energy needed to proliferate and invade neighboring tissue. The study shows that the molecule, miR-125b, is often lost in CLL, and that the loss is associated with a characteristic of cancer cells called the Warburg effect.  

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• 06:00 Most accurate robotic legs mimic human walking gait

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  A group of US researchers has produced a robotic set of legs which they believe is the first to fully model walking in a biologically accurate manner.  

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• 06:00 NASA satellites examine powerful summer derecho

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  As a powerful summertime derecho moved from Illinois to the Mid-Atlantic states on June 29, expanding and bringing destruction with it, NASA and other satellites provided a look at various factors involved in the event, its progression and its aftermath.  

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• 06:00 NASA sees tropical fireworks in E. Pacific in newborn Tropical Storm Daniel

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  Tropical "fireworks" happened in the eastern Pacific Ocean on July 4 as Tropical Depression 04E formed off western Mexico's coast and strengthened into Tropical Storm Daniel. NASA's Tropical Rainfall Measuring Mission (TRMM) satellite captured an image of TD 4E's rainfall and towering clouds as it passed overhead, and saw "hot towers" that suggested it would become a tropical storm.  

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• 06:00 New approach uncovers data abuse on mobile end devices

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  Increasingly often, mobile applications on web-enabled mobile phones and tablet computers do more than they appear to.  

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• 06:00 New instrument sifts through starlight to reveal new worlds

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  An advanced telescope imaging system that started taking data last month is the first of its kind capable of spotting planets orbiting suns outside of our solar system. The collaborative set of high-tech instrumentation and software, called Project 1640, is now operating on the Hale telescope at the Palomar Observatory in California after more than six years of development.  

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• 06:00 Nitrogen pollution changing Rocky Mountain National Park vegetation, says CU-Boulder-led study

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  A new study led by the University of Colorado Boulder indicates air pollution in the form of nitrogen compounds emanating from power plants, automobiles and agriculture is changing the alpine vegetation in Rocky Mountain National Park.  

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• 06:00 Novel nanotherapeutic delivers clot-busting drugs directly to obstructed blood vessels

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  Researchers at the Wyss Institute for Biologically Inspired Engineering at Harvard University have developed a novel biomimetic strategy that delivers life-saving nanotherapeutics directly to obstructed blood vessels, dissolving blood clots before they cause serious damage or even death. This new approach enables thrombus dissolution while using only a fraction of the drug dose normally required, thereby minimizing bleeding side effects that currently limit widespread use of clot-busting drugs.  

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• 06:00 OU physicists part of international collaboration leading to discovery of Higgs boson

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  University of Oklahoma high-energy physicists were among the 1,700 US scientists from 89 American universities who collaborated on the international effort in the search for the Higgs boson. Results announced this week from CERN indicate discovery of a new particle consistent with the Higgs boson.  

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• 06:00 Physicists discover a new particle that may be the Higgs boson

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  Physicists at the Large Hadron Collider in Geneva, Switzerland, have discovered a new particle that may be the long-sought Higgs boson, the fundamental particle that is thought to endow elementary particles with mass.  

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• 06:00 Repeat aneurysm screening for high-risk men should be considered

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  Aneurysm screening for men aged over 65 is cost effective and rescreening those at highest risk, at least once, should be considered, suggests a study published on bmj.com today.  

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• 06:00 Research shows endowment effect in chimpanzees can be turned on and off

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  Groundbreaking new research in the field of "evolutionary analysis in law" not only provides additional evidence that chimpanzees share the controversial human psychological trait known as the endowment effect -- which in humans has implications for law -- but also shows the effect can be turned on or off for single objects, depending on their immediate situational usefulness.  

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• 06:00 Researchers find a brain center for social choices

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  Although many areas of the human brain are devoted to social tasks like detecting another person nearby, a new study has found that one small region carries information only for decisions during social interactions. Specifically, the area is active when we encounter a worthy opponent and decide whether to deceive them.  

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• 06:00 Robot vision: Muscle-like action allows camera to mimic human eye movement

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  Using piezoelectric materials, researchers have replicated the muscle motion of the human eye to control camera systems in a way designed to improve the operation of robots. This new muscle-like action could help make robotic tools safer and more effective for MRI-guided surgery and robotic rehabilitation.  

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• 06:00 Satellite research reveals smaller volcanoes could cool climate

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  A University of Saskatchewan-led international research team has discovered that aerosols from relatively small volcanic eruptions can be boosted into the high atmosphere by weather systems such as monsoons, where they can affect global temperatures.  

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• 06:00 Scientists discover new trigger for immense North Atlantic Ocean spring plankton bloom

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  On this July 4th week, US beachgoers are thronging their way to seaside resorts and parks to celebrate with holiday fireworks. But across the horizon and miles out to sea toward the north, the Atlantic Ocean's own spring and summer ritual unfolds. It entails the blooming of countless microscopic plants, or phytoplankton.  

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• 06:00 Scientists identify gene linked to facial, skull and cognitive impairment

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  A gene whose mutation results in malformed faces and skulls as well as mental retardation has been found by scientists.  

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• 06:00 Scripps Florida scientists identify critical 'quality control' for cell growth

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  Scientists from the Florida campus of the Scripps Research Institute have identified a series of intricate biochemical steps that lead to the successful production of proteins, the basic working units of any cell.  

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