Monday, July 05, 2010

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Super-high pressures used to create super battery: 'Most condensed form of energy storage outside of nuclear energy'

Posted: 05 Jul 2010 02:00 PM PDT

Using super-high pressures similar to those found deep in the Earth or on a giant planet, researchers have created a compact, never-before-seen material capable of storing vast amounts of energy.

Ultrafine particles in air pollution may heighten allergic inflammation in asthma

Posted: 05 Jul 2010 02:00 PM PDT

Even brief exposure to ultrafine pollution particles near a freeway is potent enough to boost the allergic inflammation that exacerbates asthma, according to new research.

Worm bites off enough to chew: Ingenious evolutionary trick

Posted: 05 Jul 2010 02:00 PM PDT

Dramatic scenes are played out under Ralf Sommer's microscope: his research object, the roundworm Pristionchus pacificus bites another worm, tears open a hole in its side and devours the oozing contents. The squirming victim does not stand a chance in this duel: Caenorhabditis elegans may be a close relative of Pristionchus; unfortunately, however, it does not have the same strong "teeth". Pristionchus' impressive hunting technique though is not the focus of interest for the biologists. Their concern is the development of its mouthparts.

Treating tongue tie could help more babies breastfeed

Posted: 05 Jul 2010 02:00 PM PDT

When the connective tissue under a newborn's tongue is too tight, it prevents the baby from being able to breastfeed properly. A simple surgical snip can fix the problem, but many doctors do not perform the procedure.

Nano-sized advance toward next big treatment era in dentistry

Posted: 05 Jul 2010 02:00 PM PDT

Scientists are reporting an advance toward the next big treatment revolution in dentistry -- the era in which root canal therapy brings diseased teeth back to life, rather than leaving a "non-vital" or dead tooth in the mouth. Researchers now describe a first-of-its-kind, nano-sized dental film that shows early promise for achieving this long-sought goal.

More than 2 billion people worldwide lack access to surgical services

Posted: 05 Jul 2010 02:00 PM PDT

More than two billion people worldwide do not have adequate access to surgical treatment, according to a new study.

Our brains are more like birds' than we thought

Posted: 05 Jul 2010 08:00 AM PDT

For more than a century, neuroscientists believed that the brains of humans and other mammals differed from the brains of other animals, such as birds (and so were presumably better). Researchers have now found that a comparable region in the brains of chickens concerned with analyzing auditory inputs is constructed similarly to that of mammals.

Personalized approach to smoking cessation may be reality in 3-5 years

Posted: 05 Jul 2010 08:00 AM PDT

A personalized approach to smoking cessation therapy is quickly taking shape. New evidence suggests that combining information about a smoker's genetic makeup with his or her smoking habits can accurately predict which nicotine replacement therapy will work best.

Mountain mice show adaptation to altitude

Posted: 05 Jul 2010 08:00 AM PDT

Mice at altitude have adapted to use oxygen more efficiently during exercise than their low-altitude counterparts by showing a fuel preference for carbohydrates over fats, Canadian and Peruvian scientists reveal. It is very likely that a similar strategy has also evolved in other mammals, including high-altitude native humans.

Cancer stem cells are not 'one size fits all,' lung cancer models show

Posted: 05 Jul 2010 08:00 AM PDT

Cancer stem cells have enticed scientists because of the potential to provide more durable and widespread cancer cures by identifying and targeting the tumor's most voracious cells. Now, researchers have identified cancer stem cells in a model of the most common form of human lung cancer and, more significantly, have found that the cancer stem cells may vary from tumor to tumor, depending upon the tumor's genetic signature.

Graphene 2.0: A new approach to making a unique material

Posted: 05 Jul 2010 08:00 AM PDT

Since its discovery, graphene -- an unusual and versatile substance composed of a single-layer crystal lattice of carbon atoms -- has caused much excitement in the scientific community. Now, researchers have hit on a new way of making graphene, maximizing the material's enormous potential, particularly for use in high-speed electronic devices.

High BMI linked to proximity to convenience stores

Posted: 05 Jul 2010 08:00 AM PDT

Researchers conducting a neighborhood-scaled exploratory study that tested the association between the food environment, the built environment and women's body mass index have found that women with homes closer to a supermarket, relative to a convenience store, had lower BMIs, and that the greater the number of restaurants within a five minute walk of a woman's home, the higher her BMI.

Reprogrammed human blood cells show promise for disease research

Posted: 05 Jul 2010 02:00 AM PDT

Cells from frozen human blood samples can be reprogrammed to an embryonic stem-cell-like state, according to new research. These cells can be multiplied and used to study the genetic and molecular mechanisms of blood disorders and other diseases. The breakthrough described here allows for study of cells from frozen blood samples already stored at blood banks -- even from deceased patients.

Nanomachines in the powerhouse of the cell: Architecture of the largest protein complex of cellular respiration elucidated

Posted: 05 Jul 2010 02:00 AM PDT

Scientists in Germany have elucidated the architecture of the largest protein complex of the cellular respiratory chain.They discovered an unknown mechanism of energy conversion in this molecular complex. The mechanism is required to utilize the energy contained in food.

Air pollution doesn't increase risk of preeclampsia, early delivery, study finds

Posted: 05 Jul 2010 02:00 AM PDT

While pregnant women may worry about the effects of air pollution on their health and that of their developing child, exposure to carbon monoxide and fine particles in the air during pregnancy does not appear to increase the risk of preterm delivery or preeclampsia -- a serious condition that arises only during pregnancy -- according to results of a new study.

Is your flashy school website safe?

Posted: 05 Jul 2010 02:00 AM PDT

Most educational websites in the US are using Flash applications that fail to adequately secure these pages. This is a growing problem for the Internet as vulnerable sites can be hijacked for malicious and criminal activity, according to a new paper by an expert in digital forensics.

Terrorist de-radicalization shows promise, comprehensive study finds

Posted: 05 Jul 2010 02:00 AM PDT

Prison programs to de-radicalize terrorists show promise, if well-run, according to a new report. It concludes that programs in Saudi-Arabia, Singapore, Indonesia and elsewhere "can make a difference." The researchers say their work could have policy implications for detainees at Guantanamo Bay, Afghanistan and Iraq.

Gene regulating human brain development identified

Posted: 04 Jul 2010 02:00 PM PDT

With more than 100 billion neurons and billions of other specialized cells, the human brain is a marvel of nature. It is the organ that makes people unique.

Brain atrophy responsible for depression in people battling multiple sclerosis

Posted: 04 Jul 2010 02:00 PM PDT

Adding to all that ails people managing their multiple sclerosis (MS) is depression, which has a lifetime risk for MS sufferers as high as 50 percent. Now for the first time in living humans, researchers suggest atrophy of a specific region of the hippocampus, a critical part of the brain involved in mood and memory, among other functions, may be the cause.

Muscular problems in children with neonatal diabetes are neurological, study finds

Posted: 04 Jul 2010 02:00 PM PDT

The muscle weakness and coordination problems sometimes seen in patients with neonatal diabetes -- a rare, inherited form of diabetes -- are caused by problems in the brain rather than the muscles, according to new research. The findings could pave the way for the development of improved treatments for the disease.

Molecules found in blue jean and ink dyes may lead to more efficient solar cells

Posted: 04 Jul 2010 02:00 PM PDT

Researchers have discovered a simple process -- employing molecules typically used in blue jean and ink dyes -- for building an organic framework that could lead to economical, flexible and versatile solar cells.

Memory problems not the only predictor of later mild cognitive impairment

Posted: 04 Jul 2010 02:00 PM PDT

Researchers have found that lower, though not necessarily impaired, performance on tests measuring story learning or retention and processing speed in motor tasks dependent on visual control, as well as symptoms of depression, predicted subsequent cognitive decline in a normal population.

Coolest stars come out of the dark: Spitzer spies frigid brown dwarfs

Posted: 04 Jul 2010 05:00 AM PDT

Astronomers have uncovered what appear to be 14 of the coldest stars known in our universe. These failed stars, called brown dwarfs, are so cold and faint that they'd be impossible to see with current visible-light telescopes. Spitzer's infrared vision was able to pick out their feeble glow, much as a firefighter uses infrared goggles to find hot spots buried underneath a dark forest floor.

Report examines whether statins prevent death in high-risk individuals without heart disease

Posted: 04 Jul 2010 05:00 AM PDT

A meta-analysis of previously published studies finds no evidence that statins are associated with a reduced risk of death among individuals at risk for but with no history of cardiovascular disease, according to a new study.

Nutrition's potential to save sight

Posted: 04 Jul 2010 05:00 AM PDT

Scientists are finding that healthy eating can reduce not only health care costs, but also the decline of quality of life due to these diseases.

How loss of key protein promotes aggressive form of leukemia

Posted: 04 Jul 2010 05:00 AM PDT

New research illuminates in fine detail one of the genetic paths that leads to a particularly aggressive form of leukemia. A team discovered a new tumor-suppressing function of p53, distinct, for instance, from apoptosis, and somewhat related to senescence. They showed that it has the ability to reinforce cell-fate and differentiation programs. In AML, p53 loss leads to cancer by disabling this reinforcement.

Genetic inspiration could show the way to revolutionize information technology

Posted: 04 Jul 2010 05:00 AM PDT

Chemists in the UK have created a synthetic form of DNA that could transform how digital information is processed and stored.

Bicycling, brisk walking help women control weight; Researchers call for more bike-friendly environments to combat obesity

Posted: 04 Jul 2010 05:00 AM PDT

Premenopausal women who make even small increases in the amount of time they spend bicycling or walking briskly every day decrease their risk of gaining weight, according to a new study.

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