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 20 of 69 for “"bleached"”.
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Hydroxyl radical activity in bleached root-filled teeth
Aims to determine whether hydroxyl radicals are generated when hydrogen peroxide is used to bleach root-filled teeth which have been discoloured by blood components.
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Alum treatment of caustic wash from chlorine bleached kraft pulp
… of alum treatment of caustic wash from chlorine bleached kraft pulp, to determine if a double tray Dorr thickener could be used to settle the coagulated waste, and to determine if a centrifugal separator could be used to dewater the sludge from the Dorr underflow. Approximately 5000 gallons of …
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Comparative tests upon the strength of unbleached and bleached cotton cloth
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1891
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Decolorization of caustic wash liquors from chlorine-bleached, sulfate, wood pulp
no abstract provided by author
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Isolation and Partial Characterization of the Rna From Streptomycin-Bleached Euglena Gracilis
Made available in DSpace on 2014-12-09T23:34:06Z (GMT). No. of bitstreams: 1 7000970.pdf: 2838326 bytes, checksum: 56ff55f509a3bbe18f6b6e209615b8c1 (MD5) Previous issue date: 1969
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Isolation and Partial Characterization of Enzymatically Active Nuclei From Streptomycin-Bleached Euglena Gracilis
Made available in DSpace on 2014-12-11T22:22:07Z (GMT). No. of bitstreams: 1 7114665.pdf: 3432855 bytes, checksum: b53b900a6ae8ff1f1dd9823ea96d20bd (MD5) Previous issue date: 1970
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Study the electrical stress withstand properties of heated refined bleached and deodorized palm oil dielectrics
The world’s energy requirement has been dominated by petroleum oil for centuries in many application fields, including transportation, household, and electricity. Mineral oil as an important insulating material in transformers has been used more than 150 years. Mineral oil application in power …
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Characterisation and fate of bleached kraft mill effluents from a New Zealand pulp and paper mill
… from the Kinleith mill, a New Zealand integrated bleached kraft pulp and paper mill, were characterised and their treatability assessed. The chlorination stage bleaching effluents from the mill’s second bleach plant [(C30D70)EoDED sequence] contained a group of novel chlorinated compounds. …
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Extractable organics and colour in a bleached kraft mill effluent land application system and recipient ground waters
… and foul condensate effluents from a traditional bleached kraft mill. The land application system comprised 44 unlined seepage basins, totalling 86 ha in area, into which approximately 10,000 m³ d⁻¹ effluent was loaded for approximately eight months of each year. The study aimed to determine (1) …
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Effects of Alpha-Tocopherol Antioxidant on the Bonding Properties of Resin Adhesive to Dentin Bleached with Sodium Perborate
… Reversal of the bond strengths back to pre-bleached levels can be obtained with application of 10% alpha-tocopherol in a 2-hour time frame, or by delaying bonding for two weeks. This study evaluated the effectiveness of a 5-minute application of 20% alpha-tocopherol to reverse the …
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Characterization of palm olein (oil) as base oil for biolubricant production
… The samples were degummed, neutralised and bleached to remove the red colour (carotene) and gummy materials. The bleached samples were tested to determine the above mentioned properties. Comparison of the crude palm oil and the bleached samples with the conventional lubricants Mobil Super …
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Ultraviolet Radiation and Carotenoid Pigmentation in Symbiotic Anthozoans
… and host feeding on the pigmentation of bleached and unbleached anemones. This experiment ran for 38 days and bleached and unbleached anemones were exposed to one of three light treatments: high PAR and high UVA; high PAR and low UVA; and low PAR and no UVA.</p> <p>Carotenoids positively …
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Culture-independent analysis of the bacterial community shifts in a macroalgal disease
… community composition between healthy and bleached algae and by two bacterial strains that can cause bleaching in vitro. In the present thesis, deep-sequencing of the 16S rRNA gene detected operational taxonomic units (OTUs) matching with 100% identity and coverage to both in vitro …
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Production of high quality soybean oil and meal: Studies on extraction methods, processing steps, deep-fat frying and optimization of extrusion aided screw pressing
… Five gallons of each of degummed, refined, bleached, non-deodorized hydrogenated and deodorized hydrogenated oils were prepared and characterized. The five processed oils were tested for stability against frying times. Optimization of extrusion aided screw press processing variables were …
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Structural changes to Pinus radiata wood lignin during kraft pulping and bleaching
… the structure of the residual lignin in pulps bleached with elemental chlorine free sequences residual lignins were isolated by dioxane acidolysis instead. The approach taken in this thesis was to compare residual lignin from pulps bleached to the same kappa number. Such a comparison should …
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Coral bleaching responses in Sodwana Bay, South Africa
… BR as a weighted percentage of coral cover bleached. Continuous temperature records from a permanent temperature gauge on Two Mile Reef were used to assess thermal stress over this period. The percentage of coral colonies that bleached in 2007, 2008, 2011, 2012 and 2013 were 37.4%, 17.4%, …
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The effects of fiber reactive and direct dyes on the physical properties of cotton fiber
… different from each other or from the bleached fiber from which they were dyed. The properties of bleached (and dyed) fibers were significantly different (lower tenacity and elongation, higher initial modulus) from untreated or scoured fibers, indicating that the bleaching step was …
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Greening the invisible hand : how environmental non-governmental organizations (NGOs) succeed and fall in technology change
… collaborative relations with major buyers of bleached paper, proved that TCF paper was a technically viable alternative, and connected environmentally-minded consumers with like-minded manufacturers. Supporting their success were: a longer history of market campaigns to transform paper …
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Dynamics of DNA-repair factors and chromosomes studied by laser-UVA-microirradiation and laser-photobleaching
… days. Chromatin movements visualized by photobleached H2B-GFP To track possible movements in interphase cell nuclei, stripe patterns were bleached into nuclei at several stages of interphase. These patterns were retained for up to two hours, until they became invisible due to the replacement …
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The abundance and diversity patterns of seaweed communities on natural and artificial substrata at Sodwana Bay, South Africa
… is surprisingly little known about the fate of bleached corals, which may either regain their zooxanthellae and recover, or may die, in which case they generally become overgrown by macroalgae. The nature and dynamics of this algal overgrowth are not well understood. This study was done on …
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