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Science News for April 18, 2008


Vitamin D and breast cancer risk

A study of 1,394 women found that those with low vitamin D levels had a significantly increased breast cancer risk. Carriers of certain polymorphisms in the vitamin D receptor gene also showed an increased risk of developing breast tumors.

SourceHelmholtz Association·JournalBreast Cancer Research·DateApr 18, 2008

Ceramic, heal thyself

Researchers found that oxygen atoms in yttria-stabilized zirconia can heal radiation-induced damage by moving into pre-existing vacancies. This self-healing behavior could lead to the development of radiation-resistant materials, improving durability and reducing replacement costs. The simulation results also suggest that this ceramic ...

SourceDOE/Pacific Northwest National Laboratory·JournalJournal of Materials Research·DateApr 18, 2008

Major discovery in the treatment of aortic valve stenosis

A recent study published in the British Journal of Pharmacology has made a significant breakthrough in treating aortic valve stenosis, a common form of heart valve disease. The experimental treatment, which raises high-density lipoproteins (HDL), showed promising results, including reduced aortic valve narrowing and calcifications.

SourceUniversity of Montreal·JournalBritish Journal of Pharmacology·DateApr 18, 2008

Geometry shapes sound of music

Researchers from Florida State University, Yale University, and Princeton University developed a new theory that analyzes music using geometry. The 'geometrical music theory' tool helps composers explore uncharted possibilities and musicians may be trained differently. It represents a culmination of the marriage between music and math.

SourceFlorida State University·JournalScience·DateApr 18, 2008

No place like home: Katrina's lasting impact

A study found that severe housing damage is a key factor behind socioeconomic disparities in psychological distress after Hurricane Katrina. The research also revealed that blacks were substantially more likely to experience serious psychological distress, with almost one-third reporting high levels of distress.

Get mobile, get promoted

Research challenges traditional views on homeworker isolation, finding that mobile connection can facilitate career progression and networking. Four interviewees expressed a desire for promotion and remained connected outside working hours.

SourceInderscience Publishers·JournalInternational Journal of Mobile Communications·DateApr 18, 2008

Promoting positive changes in youth -- even at-risk youth

The Miami Youth Development Project is a community-supported program that targets risky behaviors while promoting positive self-development. The research draws on Developmental Intervention Science, which aims to promote both short-term and long-term life course changes.

SourceSAGE·JournalJournal of Adolescent Research·DateApr 18, 2008