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  • 2005-2009  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Computer Simulation of Grain Growth in Three Dimensions by the Phase Field Model with Anisotropic Grain-Boundary Mobilities (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 2437-2442 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The kinetics and topology of grain growth in three dimensions were simulated using aphase-field model with anisotropic grain-boundary mobilities. In order to perform large scalecalculations we applied both modifications of algorithms and parallel coding techniques to the Fanand Chen's phase-field algorithm. Kinetics of abnormal grain growth is presented. It is observed thatthe grains of a minor component which are at the beginning surrounded preferentially by boundariesof high mobility grow faster than the grains of a major component until the texture reversescompletely. Additionally, topological results of grain structures, such as grain size distributions andgrain face distributions, are discussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.2437.pdf
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Phase-Field Modeling of Recrystallization - Effects of Second-Phase Particles on the Recrystallization Kinetics (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 558-559 (Oct. 2007), p. 1189-1194 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effects of second-phase particles on the recrystallization kinetics in two-dimensionalpolycrystalline structures were investigated. Numerical simulations of recrystallization wereperformed by coupling the unified subgrain growth theory with a phase-field methodology. Simpleassumptions based on experimental observations were utilized for preparing initial microstructures.The following results were obtained: (1) The presence of second-phase particles retardedrecrystallization speeds. (2) If the mean subgrain size was small enough recrystallized region coveredwhole system for various values of the particle fraction, f. (3) On the other hand, if the mean subgrainsize was not small enough the progress of recrystallization was frozen at some point
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.558-559.1189.pdf
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Haemodynamic effects of thoracic epidural anaesthesia during induction of anaesthesia: an investigation into the effects of tracheal intubation during target-controlled infusion of propofol (2005)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 60 (2005), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We compared haemodynamic changes following induction of anaesthesia with propofol during tracheal intubation with and without epidural anaesthesia. Nineteen patients were divided into two groups to receive epidurally administered saline (Group C) or lidocaine 1.5% (Group E). The propofol infusion was started to produce blood concentrations of 3 μg.ml−1, and following fentanyl and vecuronium administration, tracheal intubation was performed. Mean arterial blood pressure (MBP), heart rate (HR), Bispectral index and effect-site propofol concentration were recorded. Time to loss of consciousness was significantly shorter in Group E than in Group C. The effect-site propofol concentration at loss of consciousness was significantly lower in Group E than in Group C. MBP and HR were significantly lower following propofol induction in both groups, and were significantly increased following intubation in Group C but not in Group E. In conclusion, epidural anaesthesia did not produce profound hypotension following induction of anaesthesia and produced a reduction in the haemodynamic response to tracheal intubation during a target controlled infusion of propofol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.2005.04182.x
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    Paper (German National Licenses)
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