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Filters: Date: "1999" School Or College: "College of Mines & Earth Sciences" Collection: "ir_uspace"
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CreatorTitleDescriptionSubjectDate
1 Miller, Jan D.Effect of pH on pulping and flotation of mixed office wastepaperThe effect of pulping reagents on the deinking flotation of laser-printed wastepaper was investigated with regard to the removal efficiency of toner and mineral filler particles at different pH values. These results show that caustic pulping causes the toner to be released from the fibres as larger...Wastepaper; Deinking; pH values; Pulp production processes1999
2 Chandran, RaviEvolution of microstructure and phases in in-situ processed Ti-TiB composites containing high volume fractions of TiB whiskersA series of titanium composites, with varying volume fractions of titanium monoboride (TiB) whiskers, were made by mixing various proportions of titanium (Ti) and titanium diboride (TiB2) powders followed by hot pressing. The phases present were identified by x-ray diffraction.Morphology; diffraction; relative intensity1999
3 Brown, Francis HaroldThe evolution of neogene terrestrial ecosystems in EuropeThe Pliocene-Pleistocene chronology of hominid and other vertebrate evolution in East Africa is largely constrained by isotopic dating and regional intercorrelation of volcanic ash layers. Some eruptions were of sufficient magnitude or duration that their widespread tephra dispersal defines a serie...1999
4 Zhdanov, Michael S.Focusing geophysical inversion imagesA critical problem in inversion of geophysical data is developing a stable inverse problem solution that can simultaneously resolve complicated geological structures. The traditional way to obtain a stable solution is based on maximum smoothness criteria. This approach, however, provides smoothe...Focusing; Geophysical inversion images; Minimum gradient support functionals; MGS1999
5 Miller, Jan D.Free and emulsified oil removal by bubble accelerated flotation (BAF)Operational data from full-scale field applications and pilot tests using the Bubble Accelerated Flotation ( B A R system for the treatment of wastewater are presented. The compact BAF system based on the air-sparged hydrocyclone technology was designed to remove pollutants from industrial waste and...Bubble accelerated flotation; Air-sparged hydrocyclone; Flocculants; Oil-in-water emulsion1999
6 Miller, Jan D.Internal reflection spectroscopy for FTIR analysis of carboxylate adsorption by semi-soluble salt mineralsFlotation chemists have long sought to unravel the mechanisms of carboxylate collector adsorption by semi-soluble salt minerals. In particular, the adsorption density of adsorbed carboxylates, adsorption kinetics, speciation (chemisorbed, physisorbed), orientation, and conformation are of interest....Carboxylate collector adsorption; Salt minerals; Internal reflection spectroscopy1999
7 Chapman, David S.Regional heat-flow variations across the sedimented Juan de Fuca Ridge eastern flank: constraints on lithospheric cooling and lateral hydrothermal heat transportSeafloor heat flow has been estimated continuously along a transect on the sedimented eastern flank of the Juan de Fuca Ridge to provide constraints on the scale and rate of lateral heat and fluid transport in the upper igneous crust, and on the total flux from the young lithosphere beneath. The ...Juan de Fuca Ridge; Seafloor; Lithospheric cooling; Hydrothermal heat transport1999
8 Miller, Jan D.Treatment of cyanide by using the Mexican modification of the Merrill-Crowe processCyanide consumption can be a major factor which contributes to operating cost for cyanidation. Also after extraction and recovery of precious metals substancial amounts of cyanide are delivered to tailings ponds which creates environmental problems due to the toxicity of cyanides. In this regard, th...Cyanidation; Merrill-Crowe process; Air-sparged hydrocyclone; Cyanide recovery; Cyanide destruction; Chlorine dioxide1999
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