Filters: School Or College: "College of Mines & Earth Sciences" Collection: "ir_uspace" Format: "application/pdf"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 51 |
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Fernandez, Diego P. | Deep-sea scleractinian coral age and depth distributions in the Northwest Atlantic over the last 225,000 years | Deep-sea corals have grown for over 200,000 yrs on the New England Seamounts in the northwest Atlantic, and this paper describes their distribution both with respect to depth and time. Many thousands of fossil scleractinian corals were collected on a series o f cruises from 2003- 2005; by contrast,... | Desmophyllum dianthus; Scleractinian coral; Seamounts; Northwest Atlantic | 2007 |
| 52 |
 |
Miller, Jan D. | Determination of Madelung constants for infinite and semi-infinite lattices by direct summation | Lattice sums for the electrostatic interactions in ionic crystals, first evaluated by Madelung, are now known to high degrees of accuracy. The problem of conditional convergence has been solved either by manipulations of a mathematical model of the lattice, or by directly summing over neutral group... | Lattices; Madelung constants | 1976 |
| 53 |
 |
Reichler, Thomas J. | Determining the tropopause height from gridded data | A method is presented to determine tropopause height from gridded temperature data with coarse vertical resolution. The algorithm uses a thermal definition of the tropopause, which is based on the concept of a threshold lapse-rate. Interpolation is performed to identify the pressure at which this th... | Meteorology and Atmospheric Dynamics: Stratosphere/troposphere interactions; Numerical modeling and data assimilation; Meteorology; Atmospheric Dynamics: General circulation | 2003 |
| 54 |
 |
Miller, Jan D. | Development and application of centrifugal flotation systems in wastewater treatment | Flotation as a wastewater treatment technique is designed to remove all particles generally encountered as very fine emulsions, suspended solids, and colloids from wastewater. Historically, Dissolved Air Flotation (DAF) has been used to achieve this removal. More recently, other flotation techniques... | Wastewater treatment; Centrifugal flotation; Liquid cyclone mixing; Hybrid centrifugal dissolved-air flotation; ASH; BAF; GEM; FF | 2007 |
| 55 |
 |
Miller, Jan D.; Lin, Chen-Luh | Development of a PC, image-based, on-line particle size analyzer | A PC, image-based, on-line instrument for measuring coarse particle size on a conveyor belt is under development. The hardware and software required to implement such a system are discussed, including the interface for the special image-acquisition hardware. The system concept is given with exampl... | 1993 | |
| 56 |
 |
Miller, Jan D.; Herbst, John A.; Lin, Chen-Luh | Development of a multicomponent-multisize liberation model | This paper is concerned with the development of a kinetic model for mineral liberation by grinding. Existing population balance size reduction models are extended to include two minerals with an arbitrary number of locked particle fractions. The validity of this approach to liberation modelling is d... | Population balance; size reduction; liberation; grinding model | 1985 |
| 57 |
 |
Miller, Jan D. | Development of the air-sparged hydrocyclone - a swirl-flow flotation column | From laboratory research activities during the past five years, it is now evident that effective flotation separations can be achieved with the high-capacity air-sparged hydrocyclone. | Air-sparged hydrocyclone; Froth core | 1988 |
| 58 |
 |
Miller, Jan D. | Dimethyl ether - a new synthetic fuel commodity and chemical building block | Dimethyl ether (DME) is recognized as a potential next-generation, environmentally benign commodity for energy storage and distribution, as well as a momentous chemical building block. DME can be produced at a competitive price from synthesis gas conveniently generated from a variety of carbon-cont... | Dimethyl ether; DME; Energy carrier; Energy commodity; Diesel fuel | 2005 |
| 59 |
 |
Miller, Jan D. | Direct three-dimensional liberation analysis by cone beam x-ray microtomography | Liberation of valuable minerals during size reduction is an important aspect of mineral processing technology. In practice, most quantitative information on liberation is based on the application of stereological theorems for the analysis of image data from two-dimensional polished sections. On th... | Mineral processing; Cone beam x-ray; Microtomography | 1997 |
| 60 |
 |
Zhdanov, Michael | Discussion and reply: comments on "electromagnetic geophysics: notes from the past and the road ahead" | The direct current and electromagnetic methods have been around for almost 180 years and have been applied successfully in mining, petroleum, geotechnical, engineering, environmental, groundwater, and tectonic studies. Over such a long period of time, it is possible to lose track of who the pioneers... | 2012-01-01 | |
| 61 |
 |
Miller, Jan D. | Dispersed oil impact on froth stability in flotation | Foam stability in flotation has been studied for more than half of the last century, however, the mechanisms responsible for the defoaming action of many presently used reagents are not completely understood. This research presents oil flotation data, which may be used in the evaluation of aqueous ... | Particles; Defoaming; Surfactants | 2001 |
| 62 |
 |
Miller, Jan D.; Deo, Milind; Lin, Chen-Luh | Distribution of multiphase fluids in porous media: comparison between lattice Boltzmann modeling and micro-x-ray tomography | A parallel implementation of the three-dimensional Shan-and-Chen multicomponent, multiphase lattice Boltzmann method (LBM) was used to simulate the equilibrium distributions of two immiscible fluids in porous media. The simulations were successfully validated against cone-beam x-ray microtomographi... | Multiphase fluid flow; Porous media; X-ray microtomography | 2008-02 |
| 63 |
 |
Miller, Jan D. | Effect of feed source in the hot water processing of Utah tar sand | The processing strategy for the effective separation of bitumen from low grade (K.10 weight percent bitumen) Utah tar sands by a hot water process differs significantly from that used for the processing of high grade (> 10 weight percent bitumen) Utah tar sands. Excellent separations (coefficient o... | Tar sand; Utah; Bitumen; Hot water separation; Froth flotation | 1980 |
| 64 |
 |
Miller, Jan D. | Effect of ink types and printing processes on flotation deinking | Examination of ink types reveals that newsprint oil-based offset-cold and offset-heat inks contain substantial oil (45 to 60%) and resin (5 to 35%), water-based ink contains water (40%) and resin (polystyrene, 30%). These inks are liquids with densities around 1 g/cm3, having various viscosities... | Toners; Inks; Photocopying; Laser printing; Flotation; Deinking; Recycling; Office waste; Hyrdophobicity | 1997 |
| 65 |
 |
Miller, Jan D. | Effect of pH on pulping and flotation of mixed office wastepaper | The 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 processes | 1999 |
| 66 |
 |
Miller, Jan D. | Effect of surface oxidation on interfacial water structure at the pyrite (100) surface as studied by MDS | Flotation provides a number of alternatives for the processing of gold ores containing sulfide minerals. e.g. flotation of free gold and gold-bearing sulfides to produce a gold-rich concentrate for regrinding, oxidative pretreatment and cyanidation. | 2014-01-01 | |
| 67 |
 |
Jarrard, Richard D. | Electrical properties of basalts from Sites 768 and 770 | Conductivity of 54 basalt samples from ODP Sites 768 and 770 was measured as a function of temperature and fluid salinity. Porosity was also measured for all samples, and cation exchange capacity was measured for 46 of the samples. Porosity measurements indicated that porosity is underestimated fo... | 1991 | |
| 68 |
 |
Miller, Jan D. | Electrochemistry in silver catalysed ferric sulfate leaching of chalcopyrite | Previous investigations have demonstrated the catalytic effect of silver additions in the ferric sulfate leaching of chalcopyrite. CuFeS2 + 4Fe+3 > Cu++ + 5Fe++ + 2S° The enhanced rate of leaching was found to be due to the formation of an intermediate Ag2S film which forms on the CuFeS2 surf... | Reaction; Sulfur; Elemental | 1981 |
| 69 |
 |
Zhdanov, Michael S. | Electromagnetic inversion using quasi-linear approximation | Three-dimensional electromagnetic inversion continues to be a challenging problem in electrical exploration. We have recently developed a new approach to the solution of this problem based on quasi-linear approximation of a forward modeling operator. It generates a linear equation with respect to ... | Quasi-linear approximation; Electromagnetic inversion | 2000 |
| 70 |
 |
Miller, Jan D.; Wan, Rong Yu | Enhanced ferric sulphate leaching of copper from CuFeS2 and C particulate aggregates | Significantly faster leaching kinetics for ferric sulphate are achieved for particulate aggregates of CuFeS2 and C than for CuFeS2 itself. The effect of carbon particles upon the rate of dissolution of chalcopyrite has been increased by a factor of 4 (after 10 hours' leaching), depending upon the ... | Reaction; Chalcopyrite; Electrochemical | 1984 |
| 71 |
 |
Steenburgh, William James | Episodic dust events of Utahs Wasatch Front and adjoining region | Episodic dust events cause hazardous air quality along Utah's Wasatch Front and dust loading of the snowpack in the adjacentWasatch Mountains. This paper presents a climatology of episodic dust events of the Wasatch Front and adjoining region that is based on surface weather observations from the Sa... | 2012-01-01 | |
| 72 |
 |
Miller, Jan D. | Equilibrium and kinetics of copper extraction from ammoniacal solutions by hydroxoximes with particular emphasis on transport phenomena | The chemistry of copper extraction from ammoniacal solutions by hydroxyoxime extractants was studied. Equilibrium measurements were made by shakeout experiments with subsequent analyasis of the aqueous and/or organic phases. The kinetic experiments were carried out in a single drop reaction cell in ... | Reactant; Concentration; Dispersed | 1981 |
| 73 |
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Miller, Jan D. | Erratum to Evaluation of stucco binder for agglomeration in the heap leaching of copper ore | Figure 8 top legend is mentioned incorrectly. The legend "With ferric sulfate: column leaching of agglomerates (stucco) should be red in color and column leaching of agglomerates (no stucco) should be blue in color. The correct Fig. 8 is shown below. The authors would like to apologize for the incon... | 2011-01-01 | |
| 74 |
 |
Solomon, Douglas Kip | Evaluating the use of strontium isotopes in tree rings to record the isotopic signal of dust deposited on the Wasatch Mountains | Dust cycling from the Great Basin to the Rocky Mountains is an important component of ecological and hydrological processes. We investigated the use of strontium (Sr) concentrations and isotope ratios (87Sr/86Sr) in tree rings as a proxy for dust deposition. We report Sr concentrations and isotope r... | 2014-01-01 | |
| 75 |
 |
Miller, Jan D. | Evaluation of a CT-based coal washability analysis system under simulated on-line conditions | The appropriate software and hardware necessary to adapt an X-ray CTanalyzerfor the determination of coal washability was developed and successfully tested for well-characterized samples under laboratory conditions. Evaluation of the CT-based analyzer under simulated on-line conditions is also prese... | Coal washability; Computer simulation; X-ray CT analysis | 2002 |