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  • Copernicus  (1)
  • International Union of Crystallography (IUCr)  (1)
  • 2000-2004  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Automated data processing on beamline FIP (BM30A) at ESRF (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. 1752-1753 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Automation of protein crystallography synchrotron beamlines is becoming necessary to face challenging structural genomics projects. In this context, a program has been developed that processes diffraction frames using popular software but analyzes statistics and makes choices the way crystallographers usually do. This program includes the classical peak search, indexing, integration, scaling and anomalous signal analysis. The result, comparable with that obtained by standard users, is rapidly available, providing the required information for a more efficient use of the beam time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444901013385
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    Paper (German National Licenses)
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  • 2
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    A numerical study of the interaction between two ejecta in the interplanetary medium: one- and two-dimensional hydrodynamic simulations (2004)
    Copernicus
    Details
    Publication Date: 2004-11-03
    Description: We studied the heliospheric evolution in one and two dimensions of the interaction between two ejecta-like disturbances beyond the critical point: a faster ejecta 2 overtaking a previously launched slower ejecta 1. The study is based on a hydrodynamic model using the ZEUS-3-D code. This model can be applied to those cases where the interaction occurs far away from the Sun and there is no merging (magnetic reconnection) between the two ejecta. The simulation shows that when the faster ejecta 2 overtakes ejecta 1 there is an interchange of momentum between the two ejecta, where the leading ejecta 1 accelerates and the tracking ejecta 2 decelerates. Both ejecta tend to arrive at 1AU having similar speeds, but with the front of ejecta 1 propagating faster than the front of ejecta 2. The momentum is transferred from ejecta 2 to ejecta 1 when the shock initially driven by ejecta 2 passes through ejecta 1. Eventually the two shock waves driven by the two ejecta merge together into a single stronger shock. The 2-D simulation shows that the evolution of the interaction can be very complex and there are very different signatures of the same event at different viewing angles; however, the transferring of momentum between the two ejecta follows the same physical mechanism described above. These results are in qualitative agreement with in-situ plasma observations of "multiple magnetic clouds" detected at 1AU.
    Print ISSN: 0992-7689
    Electronic ISSN: 1432-0576
    Topics: Geosciences , Physics
    Published by Copernicus on behalf of European Geosciences Union.
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