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Science News for April 6, 2007


Researchers move closer to switching nuclear isomer decay on and off

Livermore researchers have made the most accurate measurement of a nuclear isomer's excitation energy, a crucial step towards controlling its decay. This breakthrough could enable the use of isomers as high-energy density storage systems like batteries, and has implications for quantum computing, general relativity testing, and more.

SourceDOE/Lawrence Livermore National Laboratory·JournalPhysical Review Letters·DateApr 6, 2007

Drug used to prevent HIV transmission from mother to child damages DNA

Recent studies have found that the antiretroviral drug AZT causes genetic damage that may increase future cancer risk. Animal studies demonstrated increased rates of tumors and gene changes associated with human cancer, while human studies observed mutations and chromosomal damage in newborns exposed to NRTIs in utero.

SourceWiley·JournalEnvironmental and Molecular Mutagenesis·DateApr 6, 2007

Combined imaging approach may provide better identification of difficult-to-diagnose brain clots

A combined imaging approach that combines standard MRI scans with specialized contrast-enhanced techniques may provide more effective diagnoses in patients with difficult-to-detect blood clots in veins of the brain. This approach could lead to better understanding of the disease process and potentially alter treatment regimens.

SourceUniversity of Cincinnati·JournalAmerican Journal of Neuroradiology·DateApr 6, 2007