Add BrightSurf on Google Email

Science News for March 22, 2011


Look at me!

Researchers investigated how older women feel about their representation in media and society, finding complex emotions and transformative experiences. The project encouraged women to create alternative images using photography, art therapy, and video techniques, leading to increased confidence and self-acceptance among participants.

Seismology tip sheet for April issue of BSSA, Bulletin of the Seismological Society of America

A new seismology tip sheet provides critical information on building in hazardous areas near strike-slip faults, as well as tools for predicting quake shaking in Southern California. Researchers also investigated the impact of wind farms on seismic data collection, finding that nearby turbines can cause 'seismic noise'.

SourceSeismological Society of America·JournalBulletin of the Seismological Society of America·DateMar 22, 2011

Who owns our blood?

A University of Melbourne academic warns that lack of specific laws governing Australia's newborn screening program could threaten public trust. The program, which tests baby blood for genetic conditions, raises legal questions about who owns the blood and how it is used.

SourceUniversity of Melbourne·JournalThe Medical Journal of Australia·DateMar 22, 2011

Cheap catalyst made easy

Catalysts made of carbon nanotubes dipped in a polymer solution have been shown to equal the energy output and outperform platinum catalysts in fuel cells. The new process is simpler and cheaper, reducing the cost of fuel cells by up to 75%.

SourceCase Western Reserve University·JournalJournal of the American Chemical Society·DateMar 22, 2011

Hippocampal volume and resilience in posttramatic stress disorder

A new study finds that larger hippocampal volumes are linked to recovery from post-traumatic stress disorder (PTSD), implying that the hippocampus may play a role in reversing damage caused by chronic stress. The research suggests that treatment for PTSD could be viewed as a form of brain restoration, rather than just symptom relief.

SourceElsevier·JournalBiological Psychiatry·DateMar 22, 2011

The killer within -- a novel bacterial suicide mechanism

Researchers found that zeta toxins convert a compound required for bacterial cell wall synthesis into a poison that kills bacteria from within. The toxin-antitoxin systems, which are normally dormant under normal conditions, can be activated to trigger programmed cell death in response to stress.

SourcePLOS·JournalPLOS Biology·DateMar 22, 2011

WSU proves extracellular matrix tugging creates come hither stimulus for cancer migration

A Wayne State University researcher has found that continuous restructuring of the extracellular matrix, which supports tumor weight, enables highly invasive cancer cells to spread to other parts of the body. The study identified fibronectin and cofilin as crucial components required for this mechanical response.

Digital versus analog control over cortical inhibition

Researchers discovered that membrane potential-dependent modulation of recurrent inhibition is a key mechanism for maintaining dynamic balance of excitation and inhibition in the cortex. This finding has implications for understanding cortical rhythms and preventing abnormal cortical activities during seizures.

SourcePLOS·JournalPLOS Biology·DateMar 22, 2011

Study finds reports of domestic violence rise 10 percent after NFL upsets

An analysis of 900 regular-season NFL games found a 10% increase in calls to police reporting men's assaults on their wives or intimate partners following losses by the local team. The researchers suggest that unexpected disappointments, particularly those involving traditional rival teams, may lead to an increase in violent behavior.

SourceOxford University Press UK·JournalThe Quarterly Journal of Economics·DateMar 22, 2011

Protein associated with allergic response causes airway changes in asthma patients

Researchers found that interleukin-13 stimulates invasion of airway cells called fibroblasts in asthma patients, leading to increased thickness in airway walls and loss of lung function. The protein acts in combination with other mediators, including TGF-β1 and MMPs, to cause cellular changes that contribute to airway remodeling.

SourceAmerican Thoracic Society·JournalAmerican Journal of Respiratory and Critical Care Medicine·DateMar 22, 2011

New online resource on Bacille Calmette-Guerin vaccine

The BCG World Atlas offers detailed information on current and past vaccination policies across over 180 countries. This database aims to improve the care of patients with tuberculosis (TB) by providing useful resources for clinicians, policymakers, and researchers.

SourcePLOS·JournalPLOS Medicine·DateMar 22, 2011

Sign language users read words and see signs simultaneously

A recent study by Penn State researchers found that sign language users can process both English words and American Sign Language (ASL) signs concurrently. When word pairs were matched with similar signs, reaction times were faster and accuracy rates improved compared to control group bilingual speakers.

SourcePenn State·JournalCognition·DateMar 22, 2011

Can non-medical factors trigger sick leave?

A Swedish study found that problems in relationships with colleagues and superiors were more frequent in the days leading up to sick leave. Individuals with minor ailments were also more likely to report sick when they expected a stressful workday ahead, highlighting the impact of work environment on behavior when ill.

SourceBMC (BioMed Central)·JournalBMC Public Health·DateMar 22, 2011