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Science News for February 24, 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