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Largest physics meeting of the year: March 20-25, 2011, Dallas, Texas
Date:2/9/2011

ich propels them forward. Changing the field can make the minuscule machines turn or reverse course. The group is also working on self-propelled particles based on living cells that rely on glucose for power. Such devices may one day precisely deliver drugs in the body, diagnose medical conditions, and detect toxins in the environment, among other applications. Videos of the devices in action are available at https://picasaweb.google.com/rachitasharma05/DiodeRotation#
Y9.00003 http://meetings.aps.org/Meeting/MAR11/Event/144010

PROTEIN FOLDING SPEED LIMIT

One of the most fundamental problems in modern biophysics is that of protein folding

  • how the genetically-defined sequence of a protein completely determines its three-dimensional structure. Milo Lin and colleagues at the California Institute of Technology have determined the speed limit of protein folding by measuring and modeling one of the simplest shortest steps in the process
  • the initial formation of a common protein structure called an alpha helix. They modeled this protein component as a collection of connected spheres. They also experimentally observed the same folding process by making a tiny protein of five amino acids and tracking the folding over the course of a few nanoseconds. Comparing the model and experiment allowed them to identify the factors that limit folding speed.
    J39.00001 http://meetings.aps.org/Meeting/MAR11/Event/139352

    RURAL STOCK EXCHANGES AND PLANETARY-SCALE TRADING

    Physicists in Boston are exploring the wisdom of decentralizing stock exchanges. Alexander Wissner-Gross, of MIT and Harvard University, and colleagues analyzed the advantage of coordinating financial transactions from centralized locations, asking whether it would be advantageous to decentralize exchanges, and if so, where the exchan
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  • Contact: James Riordon
    riordon@aps.org
    301-209-3238
    American Physical Society
    Source:Eurekalert

    Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

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