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Sunday, February 6, 2011

ScienceDaily Health Headlines -- for the Week of January 30 to February 6, 2011

ScienceDaily Health Headlines

for the Week of January 30 to February 6, 2011

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Posted 2011-01-31:

Scientists unlock the 'gates' on sudden cardiac death
Powerful 3-D X-rays for kids in braces should be the exception, not the rule
New era of advances in brain research: As recording technology rapidly improves, neurons give up their secrets cell by cell
Powerful new painkiller with no apparent side effects or addictive qualities, may be ready in a year
Regenerative medicine advance: New 'cocktails' support long-term maintenance of human embryonic stem cells
Celiac disease and Crohn's disease share part of their genetic background
Retired NFL players misuse painkillers more than general population, study finds

Posted 2011-01-30:

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Posted 2011-01-26:

Human-made DNA sequences made easy: New method for rapidly producing protein-polymers

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ScienceDaily Technology Headlines -- for Sunday, February 6, 2011

ScienceDaily Technology Headlines

for Sunday, February 6, 2011

Welcome to another edition of ScienceDaily's email newsletter. You can change your subscription options or unsubscribe at any time.

A loose grip provides better chemotherapy (February 5, 2011) -- Researchers have found that cancer patients may get a bigger bang and fewer side effects with a new take on a drug delivery system. By using noncovalent bonds to link light-activated anti-cancer drugs to coated gold nanoparticles, they were able to activate treatment in two hours instead of two days. The scientists expect the targeted delivery system will cut dosage by a factor of 10 or more. ... > full story

Nanoscale micorscopy and AFM positioning: Shining light on a needle in a haystack (February 5, 2011) -- Researchers report a neat solution to the "needle in a haystack" problem of nanoscale microscopy, but it's more like the difference between finding the coffee table in a darkened room either by walking around until you fall over it, or using a flashlight. Researchers found tiny assemblies of biomolecules for subsequent detailed imaging by combining precision laser optics with atomic force microscopy. ... > full story

New twist on the electron beam (February 5, 2011) -- Researchers have found a novel, and potentially widely applicable, method to expand the capabilities of conventional transmission electron microscopes by adding a new twist to their electron beams. ... > full story

Gas stations pollute their immediate surroundings, Spanish study finds (February 5, 2011) -- In Spain, it is relatively common to come across gas stations surrounded by houses, particularly in urban areas. Researchers have studied the effects of contamination at gas stations that is potentially harmful to health, which can be noted in buildings less than 100 meters from the service stations. ... > full story

New images show cloud exploding from Sun ripples like clouds on Earth (February 4, 2011) -- Physicists studying new images of clouds of material exploding from the Sun have spotted instabilities forming in that exploding cloud that are similar to those seen in clouds in Earth's atmosphere. ... > full story

New wave: Efficient source of terahertz radiation developed (February 4, 2011) -- Researchers have developed a laser-based source of terahertz radiation that is unusually efficient and less prone to damage than similar systems. The technology might be useful in applications such as detecting trace gases or imaging weapons in security screening. ... > full story

Quantum quirk: Scientists pack atoms together to prevent collisions in atomic clock (February 4, 2011) -- In a paradox typical of the quantum world, scientists have eliminated collisions between atoms in an atomic clock by packing the atoms closer together. The surprising discovery can boost the performance of experimental atomic clocks made of thousands or tens of thousands of neutral atoms trapped by intersecting laser beams. ... > full story

Scientists use quantum mechanics to show that glass will melt near absolute zero (February 4, 2011) -- By cooling glass to a temperature near absolute zero (-459.67 degrees Fahrenheit), a professor is demonstrating that, at the quantum level, glass exhibits a very different behavior than might be expected from traditional physics -- in fact, it melts. ... > full story

New model for how Nevada gold deposits formed may help in gold exploration (February 4, 2011) -- Researchers have devised a new model for how Nevada's gold deposits formed, which may help in exploration efforts for new gold deposits. ... > full story

Northern Mars landscape actively changing (February 4, 2011) -- Sand dunes in a vast area of northern Mars long thought to be frozen in time are changing with both sudden and gradual motions, as revealed by images from a high-resolution camera aboard NASA's Mars Reconnaissance Orbiter, or MRO. The new findings help scientists to better understand what features and landscapes on Mars can be explained by current processes and which require environmental conditions no longer present on the planet. ... > full story

Microbiologists aim to optimize bio-ethanol production (February 4, 2011) -- Researchers are working to resolve an emerging "food versus fuel" rivalry: they are investigating how to most effectively utilize residual field crop material for industrial production of bio-ethanol. Getting a handle on the full "toolbox" that soil bacteria use to transform cellulose into sugar could help to optimize combinations of enzymes for industrial use, potentially leading to development of a specialized degradation tool for every kind of plant waste containing cellulose. ... > full story

Same rules apply to some experimental systems regardless of scale (February 4, 2011) -- New experiments show that common scientific rules can apply to significantly different phenomena operating on vastly different scales. The results raise the possibility of making discoveries pertaining to phenomena that would be too large or impractical to recreate in the laboratory. ... > full story

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ScienceDaily Health Headlines -- for Sunday, February 6, 2011

ScienceDaily Health Headlines

for Sunday, February 6, 2011

Welcome to another edition of ScienceDaily's email newsletter. You can change your subscription options or unsubscribe at any time.

How the body’s frontline defense mechanism determines if a substance is a microbe (February 5, 2011) -- Researchers have now described how the first line of defense of the human immune system distinguishes between microbes and the body's own structures. The basis of this recognition mechanism has been unclear since the key protein components were discovered over 30 years ago -- and has now finally been cracked. ... > full story

Benefits of outdoor exercise confirmed (February 5, 2011) -- A systematic review has analyzed existing studies and concluded that there are benefits to mental and physical well-being from taking exercise in the natural environment. ... > full story

HPV vaccine works for boys: Study shows first clear benefits (February 5, 2011) -- A 4,000-patient clinical trial that spanned 18 countries has shown the first published data that the HPV vaccine works in young men and boys. ... > full story

Blood-clotting protein linked to cancer and septicemia (February 5, 2011) -- Scientists have discovered how stressed cells boost the production of the key blood-clotting factor, thrombin. Their work shows how cancer cells may be taking advantage of this process, and opens new possibilities for fighting back against cancer and septicemia. ... > full story

Children's BMI found to rise the longer their mothers work (February 5, 2011) -- Using U.S national longitudinal data on 900 children in grades 3, 5 and 6, researchers have found that children's body mass index rose the more years their mothers worked over their children's lifetimes. Surprisingly, changes in children's physical activity, unsupervised time, and TV time didn't explain the link. The reasons for these findings are not entirely clear, though one possibility is that working parents may rely more on eating out or eating prepared foods. ... > full story

New induced stem cells may unmask cancer at earliest stage (February 4, 2011) -- By coaxing healthy and diseased human bone marrow to become embryonic-like stem cells, a team of scientists has laid the groundwork for observing the onset of the blood cancer leukemia in the laboratory dish. ... > full story

Mechanism involved in breast cancer's spread to bone discovered (February 4, 2011) -- In a discovery that may lead to a new treatment for breast cancer that has spread to the bone, researchers have unraveled a mystery about how these tumors take root. ... > full story

Cross-species strategy might be a powerful tool for studying human disease (February 4, 2011) -- A new study takes advantage of genetic similarities between mammals and fruit flies by coupling a complex genetic screening technique in humans with functional validation of the results in flies. The new strategy has the potential to be an effective approach for unraveling genetically complex human disorders and providing valuable insights into human disease. ... > full story

Working more than 20 hours a week in high school found harmful (February 4, 2011) -- A new shows that among high school students, working more than 20 hours/week during the school year can lead to academic and behavior problems. The researchers used advanced statistical methods to reanalyze longitudinal data collected in the 1980s on 1,800 middle class teens in 10th and 11th grades. The researchers also found that things didn't get better when teens who were working more than 20 hours/week cut back their hours or stopped working altogether. ... > full story

Boosting body's immune response may hold key to HIV cure (February 4, 2011) -- Scientists have successfully cleared a HIV-like infection from mice by boosting the function of cells vital to the immune response. Researchers showed that a cell signaling hormone called interleukin-7 reinvigorates the immune response to chronic viral infection, allowing the host to completely clear virus. ... > full story