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Science News Archive April 2011 - Page 5


Page 5 of 26

Zeroing in on the elusive green LED

Researchers at Rensselaer Polytechnic Institute have developed a new method for manufacturing green-colored LEDs with significantly enhanced light extraction, internal efficiency, and light output. This breakthrough brings the team closer to their goal of developing high-performance, low-cost green LEDs.

SourceRensselaer Polytechnic Institute·JournalApplied Physics Letters·DateApr 25, 2011

OSA launches new journal, Optical Materials Express

The new journal, Optical Materials Express, launched by OSA, explores the intersection of optics and materials science, offering rapid online publication and open-access features. The inaugural issue includes research on metamaterials, microlasers, and chiral optical materials.

SourceOptica·JournalOptical Materials Express·DateApr 25, 2011

Lollipops with side effects

A recent study by Max Planck Institute researchers discovered that ants can recognize the distinctive body odor of caterpillars after they consume sugary secretions from wild tobacco plant trichomes. The caterpillars develop a unique odor profile, which is then detected by predatory ants, making them easier to locate and feed on.

SourceMax Planck Institute for Chemical Ecology·JournalProceedings of the National Academy of Sciences·DateApr 25, 2011

Study finds keys to working with Latino church to fight domestic abuse

A new study from North Carolina State University identifies cultural factors that social-service providers and others need to understand to form effective partnerships with Latino church leaders in addressing domestic violence. These factors include the importance of acknowledging traditional male and female roles in Latino cultures, a...

SourceNorth Carolina State University·JournalFamilies in Society The Journal of Contemporary Social Services·DateApr 25, 2011

Beetle bling: Researchers discover optical secrets of 'metallic' beetles

Beetle researchers have discovered that the unique structural arrangements of exo-skeletal chitin layers in their elytra create a metallic appearance by reflecting light through different refractive indices. This phenomenon enables the beetles to produce striking gold and silver colors, similar to those found in precious metals.

SourceOptica·JournalOptical Materials Express·DateApr 25, 2011

JCI table of contents: April 25, 2011

A team of researchers has identified a key role for the protein fibulin-5 in preventing pelvic organ prolapse (POP) in mice. Fibulin-5 prevents POP by facilitating the assembly of normal elastic fibers and inhibiting the activity of MMP9, a protein that degrades these fibers. Increased levels of MMP-9 were found in vaginal tissue sampl...

SourceJCI Journals·JournalJournal of Clinical Investigation·DateApr 25, 2011

Researchers identify novel pathophysiologic mechanism responsible for autoimmunity

The study reveals that human proteins with Dermatan Sulfate affinity can become autoantigens, driving autoreactive B-1a cell responses and autoantibody production. Researchers identified over 200 autoantigens, including novel ones, which could lead to better diagnostics and personalized treatment for autoimmune diseases.

SourceBoston University School of Medicine·JournalAmerican Journal Of Pathology·DateApr 25, 2011

Scientists create stable, self-renewing neural stem cells

Researchers at University of California - San Diego School of Medicine and colleagues report a game-changing advance in stem cell science: the creation of long-term, self-renewing neural precursor cells from human embryonic stem cells that can be directed to become many types of neuron. The new process promises to have broad applicatio...

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateApr 25, 2011

Researchers report widespread use of medications among pregnant women

A recent study found that medication use among pregnant women is widespread and varies by socioeconomic status, maternal age, race/ethnicity, and state of residence. The study also revealed a significant increase in the use of prescription medications during the first trimester, with antidepressants showing dramatic increases.

SourceBoston University School of Medicine·JournalAmerican Journal of Obstetrics and Gynecology·DateApr 25, 2011

ACC/AHA issue first clinical guidance for controlling high blood pressure in the elderly

The American College of Cardiology and the American Heart Association released the first expert consensus document to help clinicians reduce hypertension risks in older adults. The guidelines recommend targeted blood pressure control measures, including medication selection, dose titration, and lifestyle changes.

SourceAmerican College of Cardiology·JournalJournal of the American College of Cardiology·DateApr 25, 2011

Study examines changes in medical students’ views about internal medicine careers

A recent study examines changes in medical students' views about internal medicine careers from 1990 to 2007. The proportion of students planning general internal medicine training declined, while those attracted by primary care physicians' appeal increased. Bolder reform is needed to improve the educational pipeline and practice of ge...

SourceJAMA Network·JournalArchives of Internal Medicine·DateApr 25, 2011