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Due to technical work, the interlibrary loan service wont be available from March 28th until presumably April 3rd.
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  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 287-288 (Aug. 1998), p. 441-444 
    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
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 518-520 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Recently, we have reported the unusual nuclear spin relaxation behavior of water in hardening blast furnace slag mixtures and suggested an explanation for the observed changes in the spin relaxation times based on diffusion effects in inner magnetic field gradients in the paste. Meanwhile, we have succeeded in measuring the self-diffusion coefficient of water in the hardening pastes directly by means of a special pulsed field gradient technique in which the effects of internal magnetic field gradients in a sample can be compensated for. Compared to water self-diffusion in ordinary cement materials, we find a much stronger decrease of the self-diffusion coefficient in the slag based cements. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Heat and mass transfer 32 (1996), S. 9-15 
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Abstract  Based on NMR imaging results of the spatial and temporal development of ion exchange processes in alginate gels, the question of appropriate modelling of these processes is discussed. For rare earth and actinoid ions, the behaviour is found to correspond qualitatively to the expectations of Stefan’s model (shrinking core model, SCM). However, quantitative correspondence of the experimental data with the model can only be achieved when an additional diffusive layer at the surface of the ion exchange material is assumed. An extension of the SCM with respect to this problem is derived.
    Notes: Zusammenfassung Ausgehend von NMR-Bildgebungsexperimenten zum räumlichen und zeitlichen Ablauf von Ionenaus-tauschprozessen in Alginatgelen wird in diesem Beitrag die Frage nach geeigneten Modellen zur Beschreibung der experimentellen Befunde diskutiert. Es zeigt sich, daß die Eindringfronten von Lanthanidenund Actiniden-Ionen qualitativ den Erwartungen des Stefanmodells (SCM, shrinking core model) entsprechen, eine quantitative Übereinstimmung jedoch erst dann erreicht werden kann, wenn zusätzlich die Existenz einer zusätzlichen Diffusionsgrenzschicht an der Oberfläche des Gels angenommen wird. Eine entsprechende Modifikation des Stefanmodells wird abgeleitet.
    Type of Medium: Electronic Resource
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