Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Resin acids"”.
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The Synthesis of C-aryl-18-nor-steroids From Resin Acids and Their Derivatives.
Our interest in the conversion of a resin acid to a C-aryl-18-nor-steroid was to see if this class of compounds could compete as starting materials in the medicinal chemistry field. Since resin acid derivatives are rather inexpensive compared to steroid systems, the economics seemed attractive.In …
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Extractable organics and colour in a bleached kraft mill effluent land application system and recipient ground waters
… effluent organics, including monoterpenes, fatty acids, resin acids, chlorophenolics, and colour, and (2) the effects of the system on organic contamination of sediments, aquifer materials, and ground waters. The study was carried out in four parts, investigating: (i) the behaviour of extractable …
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Environmental aspects of storm runoff discharge from a timber port, Tauranga, New Zealand
… wharf, accumulation of potentially toxic resin acids in adjacent sediments, and the dilution of the wharf runoff in the receiving tidal waters, in order to assess the possible adverse environmental impact associated with the log operation at the Port of Tauranga Ltd. Based upon field data …
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Identification and analysis of extractable organic compounds present in pulp and paper mill effluent
… derivatives. It also reduced the levels of resin acids and fatty acids. BOD₅ levels were found to decrease exponentially through the extended treatment system. An anaerobic sludge lagoon which accepts solid waste from the clarifier and reject pulp was found to give rise to a series of resin …
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Separation and purification of the resins in tallol
… was undertaken to effect a separation of the resin acids from the fatty acids of tallol a waste product of the paper industry. The furfural-water and furfural-petroleum ether methods were investigated. In the first method, a 5% solution of water in furfural by weight was used as a polar …
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Fate and effects of pulp mill effluent solids in the soil environment
… contain high concentrations of naturally derived resin extractive compounds that are toxic to fish and other aquatic organisms. Improvements in waste water treatment technology has enabled the industry to meet rigorous discharge standards, however, this has resulted in an increase in the …
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Quantification and Reduction of Exposure to Residential Woodsmoke Particulate Matter
… after the stove replacement, while the two resin acids remained the same or increased. The methoxyphenols measured showed no trend during the changeout, but were found to correlate to temperature on the day of sample collection. Samples collected inside individual homes in Libby before and …
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Quantification and Reduction of Exposure to Residential Woodsmoke Particulate Matter
… after the stove replacement, while the two resin acids remained the same or increased. The methoxyphenols measured showed no trend during the changeout, but were found to correlate to temperature on the day of sample collection. Samples collected inside individual homes in Libby before and …