Radioactivity and the Environment

    Alvin Summerton South Australia Health Commision We often read or hear media items about the risks to human health of exposure to ionising radiation. With the recent attention to items such as the Chernobyl reactor accident, contamination at Maralinga and transport of plutonium by the Japanese, it seems we are being continually provided with new in...
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    The 1999 Nyholm Youth Lecture: Closet Chemistry - Is Your Home a Health Hazard?

    Assoc Prof Margaret M Harding University of Sydney Introduction Many people, both with and without any scientific background, suffer from chemophobia. The word "chemical" invokes images of pollution, smells, toxic compounds and hazardous substances. Hence, if you asked someone on the street the following questions, most people would probably be hor...
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    How Do Plants Make Oxygen?

    David C. Weatherburn Victoria University of Wellington Introduction This article describes the current state of our knowledge of how plants and other photosynthetic organisms make oxygen. Our understanding is very incomplete and there is considerable doubt about much of the information presented below as facts. This is a very active area of researc...
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    ASSESSING THE IMPACT OF PESTICIDES ON NATURAL WATER SYSTEMS

    S.M. Peterson and G.E. Batley CSIRO Centre for Advanced Analytical Chemistry Lucas Heights, NSW INTRODUCTION Modern Australian agriculture is highly dependent on chemical control for its economic success. The use of such chemicals has been targeted by environmentalists and the media as a significant contributor to the pollution of our inland waterw...
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    THE CHEMISTRY OF FRESHWATER ALGAL TOXINS

    B. C. Nicholson & J. Rositano Australian Centre for Water Quality Research Salisbury, South Australia A group of organisms currently receiving attention due to their ability to produce toxins are the widespread, and rather innocuous-looking, freshwater Algae. In the marine environment toxic algae have been a recognised danger to man for some ti...
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    THE CONTROL OF CONTAMINANT DISPERSION FROM MINE WASTE WATER IN THE TROPICS USING DESIGNED WETLAND SYSTEMS

    SUMMARY The annual wet season in the tropics produces excess accumulation of water on mine sites, which may become contaminated through contact with mine waste rock and mineral processing. Waste water may be discharged offsite and reach downstream aquatic ecosystems, including wetlands. In many cases constituents are diluted or ameliorated through ...
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    THE CHEMISTRY OF CROISSANTS

    Dr Juliet A. Gerrard and Dr Siân E. Fayle Grain Foods Research Crop & Food Research Ltd Christchurch, New Zealand BACKGROUND When leaving your local hot bread shop with a cream donut or a Danish pastry, have you ever stopped to consider the chemical reactions that take place and transform an innocuous white powder - flour- into the delicacy tha...
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    Western Australia Branch Bayliss Youth Lecture Chemistry and the Environment

    Patrick J. Garnett Edith Cowan University Tribute to Sir Noel BaylissI would like to begin by paying tribute to Sir Noel Bayliss who was Professor of Chemistry at the University of Western Australia during my time as an undergraduate and postgraduate student in the 1960s. Sir Noel's contribution to Chemistry in this State is immense. During his tim...
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    Basic Aerosol Technology

    Lindsay Showyin History The invention of the aerosol as we know it is attributed to Eric Rotheim of Norway in the late 1920s. It was not however until the early 1940s when two Americans, Goodue and Sullivan, produced a portable insecticide "bomb" that the evolution of a consumer product started. After World War II developments in the container and ...
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