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Science News Archive May 2012 - Page 7


Page 7 of 31

Business students better equipped to evaluate peers

A study by Concordia University found that business students who evaluate their peers regularly improve in evaluating others. This leads to more effective management skills. The research developed a standardized online peer evaluation system, which can be incorporated into university-wide programs.

SourceConcordia University·JournalAcademy of Management Journal·DateMay 24, 2012

Locating ground zero

Microglia, the brain's emergency workers, use a long-lasting glutamate-driven calcium wave to detect injuries, allowing them to trace the signal backwards until they reach the site of damage. This discovery could lead to new treatments for conditions such as Alzheimer's and Parkinson's diseases.

SourceEuropean Molecular Biology Laboratory·JournalDevelopmental Cell·DateMay 24, 2012

Infections may be deadly for many dialysis patients

A recent study suggests that peritonitis, a common infection in dialysis patients on peritoneal dialysis, may be linked to premature death. Researchers found that patients were more likely to develop peritonitis during the final month before their death, and even six times more so during the 30 days prior to their death.

SourceAmerican Society of Nephrology·JournalJournal of the American Society of Nephrology·DateMay 24, 2012

Relatively speaking: Researchers identify principles that shape kinship categories across languages

A new study reveals that kinship categories across languages reflect general principles of communication, including a trade-off between simplicity and informativeness. The study found that languages use only a handful of the vast number of logically possible kinship categories, with English and Mandarin Chinese using two and four terms...

SourceCarnegie Mellon University·JournalScience·DateMay 24, 2012

Slip-and-slide power generators

A new technology harnesses power from a single droplet sliding along an electret film, producing electricity when it reaches maximum velocity. The device has potential for low-power portable devices and human body motion harvesting, with a prototype demonstrating peak output power of 0.18 microwatts.

SourceAmerican Institute of Physics·JournalApplied Physics Letters·DateMay 24, 2012

The secret to good tomato chemistry

A team of researchers has identified 24 compounds as responsible for the distinct flavors and aromas of heirloom tomatoes. These findings hold promise for improving the flavor of commercially grown tomatoes.

SourceCell Press·JournalCurrent Biology·DateMay 24, 2012

JCI early table of contents for May 24, 2012

Researchers developed a new method to identify vaccine targets for Streptococcus pneumoniae, the most common cause of bacterial meningitis. Gene therapy has shown promise in treating adenosine deaminase deficiency by correcting B cell tolerance problems and supporting treatment options for patients with severe combined immunodeficiency.

SourceJCI Journals·JournalJournal of Clinical Investigation·DateMay 24, 2012

Drug allergy discovery

A research team at the University of Melbourne has discovered the biological mechanisms behind drug hypersensitivities, revealing how the immune system perceives the body's own tissues as foreign. The finding could lead to the development of a diagnostic test to determine drug hypersensitivity.

SourceUniversity of Melbourne·JournalNature·DateMay 24, 2012

Brightly colored bird bills indicate good health

A study by Queen's University researcher Troy Murphy found female birds with more colourful bills have higher antibody levels, indicating greater strength and ability to fight off invaders. The colour of a female bird's bill is strongly correlated with immunoglobulin antibodies, a component of the immune system in birds.

SourceQueen's University·JournalPhysiological and Biochemical Zoology·DateMay 24, 2012

Researchers develop new genetic method to pinpoint individuals' geographic origin

A team of researchers has developed a new genetic method called spatial ancestry analysis (SPA) that can model genetic variation in two- or three-dimensional space. SPA allows for the modeling of the spatial distribution of each genetic variant, enabling individuals to be localized on a world map based on their genetic information alone.

SourceUniversity of California - Los Angeles·JournalNature Genetics·DateMay 23, 2012

Treating pain with transplants

Researchers have successfully transplanted embryonic cells into adult mouse spinal cords to alleviate persistent pain. The study suggests that this approach may not only treat symptoms but also correct underlying disease pathology. This new therapy offers hope for patients with neuropathic pain, a condition with limited treatment options.

SourceCell Press·JournalNeuron·DateMay 23, 2012

Females face different clock problem

A Northwestern University study reveals that female shift workers and women with circadian rhythm sleep disorders experience fertility and menstrual issues due to disrupted circadian clocks. The researchers found that mice subjected to advances of the light-dark cycle had greater circadian clock disruption and lower reproductive success.

SourceNorthwestern University·JournalPLOS ONE·DateMay 23, 2012