Getting a reaction in close-up

Article Abstract:

Mark Wightman and colleagues obtained a statistical distribution of varying reaction times for individual molecules during a chemical reaction. Using a 10-micron-diameter electrode, they generated positive and negative ions of DPA and tracked the photon flashes from individual reactions.

Chemical reactions, University of North Carolina

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Researchers construct cell look-alikes

Article Abstract:

Univ of California-Santa Barbara researchers have coaxed lipid molecules into cell-like structures, consisting of lipid membranes encasing several spherical vesicles. Application could include drug-delivery devices. THe synthesis methodology is described.

Models, Innovations, Cells (Biology), Cells, Lipid research

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Rock chemistry traces ancient traders

Article Abstract:

A chemical analysis of volcanic glass particles indicates that long-distance sea trading on the South Pacific dates back to 4000 BC, 2,500 years earlier that previous estimates. The analysis links glass found on Borneo to islands 3,500 kilometers away.

Excavations (Archaeology), Pacific Islands, Borneo, Obsidian

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