1,721,859 research outputs found

    Computer based information/communication revolution: ten problematical issues and questions they raise for disaster planning and managing

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    This is an expanded written version of oral remarks prepared for the Conference on The Challenge of Major Hazards in Urban Areas on the Threshold of the New Millennium scheduled for Florence, Italy on November 12, 1997. Some of the ideas expressed have been previously published especially in Quarantelli 1996

    Simplified HPLC-UV method for the determination of alfa-tocopherol in plasma.

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    Vitamin E, known for its great nutritional importance, is normally included in animal diets as DL-tocopherol acetate. The authors propose a method that makes it possible to determine the concentration of vitamin E in plasma without saponification. This method enable to avoid aggressive treatments on the analyte and complex procedures; it detects vitamin E only in form of DL-x-tocopherol. Lipoproteins of analysed plasma were denaturised by methanol. Vitamin E was extracted by petroleum ether in presence of NaCl. The extract was dried by rotavapor at 45 °C, solubilized by methanol and injected in HPLC (C18 column, reversed phase). The quantitative determination was carried out by UV detector settled on 294 nm. Tests of repeatability inter-analysis and intra-analysis gave coefficient of variability (CV%) respectively of 1.64 and 2.41%. The mean recovery was 100%

    Origin and History of the International Research Committee on Disasters (RC-39)

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    This version of the origin and history of RC-39 was prepared by E. L. Quarantelli, President Emeritus of the RC-39 and Professor Emeritus, University of Delaware (USA). The RC-39 developed out of the fact that sociologists predominated in the pioneering stage of disaster studies
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