2 resultados para Amalgams

em Deakin Research Online - Australia


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This article seeks to address significant gaps in educational policy discourses. Namely, to respond to professional development discourses that lack significant engagement with feminist perspectives, as well as to feminist discourses that fail to consider the significance of in-service education. The data reported here are drawn from a broader case study of Australian primary practitioners from 1975 who were interviewed about their enactment of gender-inclusive reform in the state of Victoria. This discussion takes as its focus the standpoint of 17 in-service educators in terms of their conceptualisation of gender inclusiveness. Three distinctive conceptions emerged in data analysis, which may be represented as three amalgams on a continuum according to a feminist perspective. Implications of this plurality of meaning for professional development are concluded.[2]

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Understanding the amalgamation mechanisms between mercury and gold is of fundamental interest and importance to many mercury sensing applications. However, there is only limited and piecemeal discussion in the literature of the mechanisms by which Au-Hg amalgams are formed on thin Au films. Here, we present a comprehensive description of a series of morphological changes occurring in a thin polycrystalline Au film during Au-Hg amalgamation investigated by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and atomic force microscopy (AFM). These microscopic investigations enable us to offer a coherent explanation for the features and the mechanisms of amalgamation of Hg with Au in the film. We also use an optical technique (fringes of equal chromatic order, FECO) to observe changes in optical thickness and reflectivity of the film. Amalgamation reactions in the film render it inhomogeneous, thus making optical techniques unsuitable as a method for quantitative monitoring of Hg vapor using Au films of this type.