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  • PLASMA PHYSICS  (1)
  • stability  (1)
  • 1990-1994  (2)
  • 1
    Electronic Resource
    Electronic Resource
    The index of lyapunov stable fixed points in two dimensions (1994)
    Springer
    Journal of dynamics and differential equations 6 (1994), S. 631-637 
    Details
    ISSN: 1572-9222
    Keywords: stability ; fixed point index ; periodic solutions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, we prove that a stable isolated fixed point of an orientation preserving local homeomorphism onR 2 has fixed point index 1. We also give a number of applications to differential equations. In particular, we deduce that a number of existence methods for producing periodic solutions of differential equations in the plane always produce unstable solutions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02218851
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Cold plasma processing of local planetary ores for oxygen and metallurgically important metals (1990)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The utilization of a cold plasma in chlorination processing is described. Essential equipment and instruments were received, the experimental apparatus assembled and tested, and preliminary experiments conducted. The results of the latter lend support to the original hypothesis: a cold plasma can both significantly enhance and bias chemical reactions. In two separate experiments, a cold plasma was used to reduce TiCl4 vapor and chlorinate ilmenite. The latter, reacted in an argon-chlorine plasma, yielded oxygen. The former experiment reveals that chlorine can be recovered as HCl vapor from metal chlorides in a hydrogen plasma. Furthermore, the success of the hydrogen experiments has lead to an analysis of the feasibility of direct hydrogen reduction of metal oxides in a cold plasma. That process would produce water vapor and numerous metal by-products.
    Keywords: PLASMA PHYSICS
    Type: NASA Space Engineering Research Center for Utilization of Local Planetary Resources; 5 p
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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