الاثنين، 21 مايو 2012

ScienceDaily: Top News

ScienceDaily: Top News


Soldiers who desecrate the dead see themselves as hunters

Posted: 20 May 2012 07:50 PM PDT

Modern day soldiers who mutilate enemy corpses or take body-parts as trophies are usually thought to be suffering from the extreme stresses of battle. But, new research shows that this sort of misconduct has most often been carried out by fighters who viewed the enemy as racially different from themselves and used images of the hunt to describe their actions.

Good news for nanomedicine: Quantum dots appear safe in pioneering study on primates

Posted: 20 May 2012 10:39 AM PDT

A pioneering study to gauge the toxicity of quantum dots in primates has found the tiny crystals to be safe over a one-year period, a hopeful outcome for doctors and scientists seeking new ways to battle diseases like cancer through nanomedicine.

First, do no harm: Danger in standard treatment for a serious lung disease

Posted: 20 May 2012 10:38 AM PDT

A combination of three drugs used worldwide as the standard of care for a serious lung disease puts patients in danger of death or hospitalization, and should not be used together to treat the disease, called idiopathic pulmonary fibrosis, according to the surprising results of a rigorous independent study. The findings show the importance of testing treatments that doctors give for any condition -- to see if they truly help, and don't harm, patients.

Prenatal pollution exposure dangerous for children with asthma

Posted: 20 May 2012 10:36 AM PDT

The link between prenatal exposure to air pollution and childhood lung growth and respiratory ailments is well established, and now a new study suggests that these prenatal exposures can be especially serious for children with asthma.

Children Exposed to Smoking Face Long-Term Respiratory Risks

Posted: 20 May 2012 10:36 AM PDT

A new study shows that the health risks associated with exposure to environmental tobacco smoke among children whose parents smoke persist well beyond childhood, independent of whether or not they end up becoming smokers.

Experimental bariatric surgery controls blood sugar in rodents with diabetes via novel sensing signals in gut

Posted: 20 May 2012 10:35 AM PDT

For the first time, scientists have shown that an experimental bariatric surgery can lower blood sugar levels in rats with type 1 diabetes.

New target to battle rheumatoid arthritis

Posted: 20 May 2012 10:35 AM PDT

Scientists have identified the mechanism by which a cell signaling pathway contributes to the development of rheumatoid arthritis (RA).

Songbirds' learning hub in brain offers insight into motor control

Posted: 20 May 2012 10:35 AM PDT

To learn its signature melody, the male songbird uses a trial-and-error process to mimic the song of its father, singing the tune over and over again, hundreds of times a day, making subtle changes in the pitch of the notes. To accomplish this feat, the Bengalese finch's brain must receive and process large quantities of information about its performance and use that data to precisely control the complex vocal actions that allow it to modify the pitch and pattern of its song. Now, scientists have shown that a key brain structure acts as a learning hub, receiving information from other regions of the brain and figuring out how to use that information to improve its song, even when it's not directly controlling the action.

Drug found for parasite that is major cause of death worldwide

Posted: 20 May 2012 10:35 AM PDT

An existing drug has been found to be effective against Entamoeba histolytica. This parasite causes amebic dysentery and liver abscesses and results in the death of more than 70,000 people worldwide each year.

Acid in the brain: New way to look at brain function

Posted: 19 May 2012 06:32 PM PDT

Researchers have developed an MRI-based method to detect and monitor pH changes in living brains. The new technique provides the best evidence so far that pH changes do occur with normal function in the intact human brain. The team hopes to use the method to investigate the role of pH changes in psychiatric disease, including anxiety and depression.

Performance boost for microchips

Posted: 18 May 2012 10:28 AM PDT

The semiconductor industry is faced with the challenge of supplying ever faster and more powerful chips. The Next-Generation Lithography with EUV radiation will help meeting that challenge. Researchers have now developed key components.

DNA barcoding verified the discovery of a highly disconnected crane fly species

Posted: 18 May 2012 10:27 AM PDT

Entomologists have discovered a new crane fly species on the Eurasian continent. The new species, Tipula recondita, has been documented in both Finnish Lapland and the Russian Far East in two apparently disconnected populations.

Indoor navigation system for blind

Posted: 18 May 2012 10:27 AM PDT

A computer science engineering team has developed an indoor navigation system for people with visual impairments. The researchers have explained how a combination of human-computer interaction and motion-planning research was used to build a low-cost accessible navigation system, called Navatar, which can run on a standard smartphone.

Using graphene, scientists develop a less toxic way to rust-proof steel

Posted: 18 May 2012 10:25 AM PDT

Researchers are making significant progress on rust-proofing steel using a graphene-based composite that could serve as a nontoxic alternative to coatings that contain hexavalent chromium, a probable carcinogen.

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