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The downstream evolution of the vorticity field in the vicinity of hairpinshaped regions of rotational motion appearing in the transitioning boundary layer is examined. It is shown that the dynamics o...
Understanding the Cycle of Knowledge: Its rise, preservation and decay
rise preservation decay
2010/11/17
Can (scientific) knowledge be reliably preserved over the long term. We have today very efficient and reliable methods to encode, store and retrieve data in a storage medium that is fault tolerant ag...
Rise and Fall of Pentaquarks in the QCD Sum Rules Approach
Mass and decay Pentaquarks QCD Sum Rules
2010/10/13
We review the existing mass and decay width determinations of pentaquarks with QCD Sum Rules (QCDSR). We give special attention to the intermediate assumptions and choices which we are obliged to do i...
Great Geomagnetic Storms in the Rise and Maximum of Solar Cycle 23
Great Geomagnetic Storms the Rise and Maximum Solar Cycle 23
2010/10/26
Geomagnetic storms are intervals of time when a sufficiently intense and long-lasting interplanetary convection electric field leads, through a substantial injection of energy into the magnetosphere-i...