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 9 of 9 for “"Dense Media"”.
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Integrated mining and preconcentration systems for nickel sulfide ores
… the orebodies showed amenability to dense media separation and conductivity sorting. The dense media results showed high mass rejections and high metal recoveries for all nine orebodies. Conductivity sorter results were not as consistent, but still showed good results. Dense media …
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Precombustion Removal of Hazardous Air Pollutant Precursors
… physical cleaning techniques (i.e., crushing, dense media separation, froth flotation, and enhanced gravity separation). The bench-scale test circuit incorporated crushing and rewashing a coarse, mid-density product with hopes that trace element rejections would improve due to greater …
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Electromagnetic scattering and induction models for spheroidal geometries
… of small dielectric spheroids populating a dense medium is compared to scattering from a homogeneous sphere. A Method of Moments (MoM) solution is adopted which accounts for spheroid-spheroid interactions directly. Coherent scattering results from these collections are compared to Mie …
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Hot and dark matter
… the propagation of energetic partons in hot and dense media, and we propose two new reactions for dark matter in the early universe. In the first part, we analyze the transverse momentum broadening in the absence of radiation of an energetic parton propagating through quark-gluon plasma via Soft …
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Development of Alternative Crab Claw Processing Systems to Minimize Environmental Impact
… Two alternatives involved the use of dense media, a 22.5% Staley 1300 corn syrup solution with 5.0% salt and a 30.0% Staley 1300 corn syrup solution, to separate the crab claw meat and shell. These methods, in full scale tests, produced meat yields comparable to that of the brine …
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Optimization of spodumene flotation with fatty acid collectors
… like spodumene (LiAlSi2O6) – concentrated by dense media separation (DMS) and/or froth flotation – represent >50% of global lithium production. A major process challenge in spodumene beneficiation is poor flotation selectivity stemming from insolubility of the tall oil fatty acid (TOFA) …
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Characterizing and mitigating scattering effects in terahertz time domain spectroscopy measurements.
… of particles, and (ii) scattering from dense media. Section II presents several signal processing based approaches for estimating and mitigating scattering effects in THz-TDS measurements for samples that exhibit sharp and sparse absorption features, without requiring a priori …
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Modélisation de l’émission micro-onde hivernale en forêt boréale canadienne
… du modèle d’émission micro-onde passive DMRT-ML (Dense media radiative transfer theory – multi layer) pour l’intégration d’une nouvelle métrique représentant la taille des grains (surface spécifique des grains de neige: SSA). L’étude basée sur des mesures radiométriques et de neige in situ, montre …
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Ultrasonic characterization of cell pellet biophantoms and tumors using quantitative ultrasound models
… tumors. Tumors are complex acoustic scattering media and to date there has not been an adequate acoustic scattering model that fits them well. The tumor scattering mechanisms are studied herein by a step-wise approach: starting from simple (low-concentration cell pellet biophantoms) to …