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  1. No Access

    Article

    Existence and location results for sign-changing solutions for three-point boundary value problems using Leray-Schauder degree

    In this paper, by using the modification function technique and the Leray-Schauder degree method some existence and multiplicity results for sign- changing solutions of certain three-point boundary value probl...

    Xu **an, Donal O’Regan, Zhang Ruifang in Monatshefte für Mathematik (2009)

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    Article

    Improvements in α-Fe2O3 ceramic sensors for reducing gases by addition of Sb2O3

    The microstructure, electrical properties and gas-sensing characteristics of Sb-doped α-Fe2O3 were investigated. Powder precursors with Sb/Fe = 0–0.1 were prepared by chemical coprecipitation method. Sb-doped α-F...

    Zhang Tianshu, P. Hing, Zhang Ruifang in Journal of Materials Science (2000)