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Science News Archive February 2003 - Page 2


Page 2 of 9

Engineers take new look at strength of industrial glass

Researchers have improved a method for measuring the strength of E-glass and other glass fibers, revealing it may be more than one and a half times stronger than previously recorded measurements. This discovery could help expand applications for glass fibers in industries such as automotive manufacturing.

SourceOhio State University·JournalJournal of Non-Crystalline Solids·DateFeb 25, 2003

Canaries in a coal mine?

A comprehensive volume addresses key hypotheses for amphibian declines, including non-native species, UV radiation, and climate change. The study highlights the urgent need for conservation research to address this biodiversity crisis.

SourceBlackwell Publishing Ltd.·JournalDiversity and Distributions·DateFeb 25, 2003

NMR - The movie

A team led by Prof. Lucio Frydman has found a way to perform multidimensional NMR with a single scan, significantly speeding up molecular studies and enabling the observation of rapid changes in molecules like protein folding. The new method uses a 'slicing' approach, simultaneously performing measurements on multiple thin slices of a ...

SourceAmerican Committee for the Weizmann Institute of Science·JournalProceedings of the National Academy of Sciences·DateFeb 24, 2003

Hormones, sand & terrorism

Researchers are studying the efficacy of bovine growth hormone in tilapia aquaculture and developing methods for its treatment. Additionally, computer models predict physical impacts of offshore dredging on coastal beaches, and a new publication from Delaware Sea Grant examines port security measures.

Keeping tabs on teens may curb alcohol use and risks

A study of 444 managed-care patients aged 12-17 found that adolescents with consistently monitored parents were less likely to engage in alcohol-risk behaviors. The researchers suggest that monitoring may help reduce risk when adolescents are initially exposed to alcohol, but may be insufficient for high-risk behaviors.

SourceCenter for Advancing Health·JournalAmerican Journal of Health Behavior·DateFeb 24, 2003

Teasing apart the molecules of life

Researchers devise new method combining optical trapping and single-molecule fluorescence to study DNA structural and mechanical changes. This technique allows scientists to study rare molecules essential for life and disease development.

SourceBMC (BioMed Central)·JournalJournal of Biology·DateFeb 24, 2003

Eating eggs may protect against breast cancer

A new study published in Breast Cancer Research found that higher levels of egg consumption during adolescence are associated with a decreased risk of breast cancer. Eating dietary fiber and vegetable fat was also attributed to a reduced risk, while butter appeared to increase the risk.

SourceBMC (BioMed Central)·JournalBreast Cancer Research·DateFeb 21, 2003

Study may help explain sunlight's role in melanoma development, have screening implications

Researchers have discovered a specific molecular pathway within cells that becomes mutated by ultraviolet light exposure, accelerating melanoma development. The study's findings suggest a rational method for risk stratification and screening of atypical skin moles, which could help identify patients with high-risk profiles.

SourceUniversity of North Carolina Health Care·JournalProceedings of the National Academy of Sciences·DateFeb 21, 2003