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 83 for “"tailing"”.
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Ultrasonic coagulation of phosphate tailing
no abstracts provided by author
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Online Social Presence (OSP) In E-Tailing: Construct Development And Testing
… to create persuasive and effective online retailing experiences, which persuade customers to purchase their products and services. Online Social Presence (OSP) reexamines and extends the original social presence theory to the complex and dynamic e-tailing environment to address research that …
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ESTABLISHMENT AND GROWTH OF ANNUAL AND PERENNIAL GRASSES ON COPPER MINE TAILING SLOPES (ARIZONA).
… perennial grasses on the slopes of copper mine tailing ponds. In 1980, the north and south slope exposures were hydroseeded with barley (Hordeum vulgare L.). Plots were capped with topsoil prior to planting or left uncapped, and mulched with wheat straw after planting or left unmulched. Desert …
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Assessment of copper recovery from leaching of microwave pre-treated tailing from the Otjihase mine
… considered. XRD analysis of the as-received mine tailings revealed that copper is present in the tailings material in the form of sulphide minerals only, covellite (CuS) and chalcopyrite (CuFeS2). Dry mine tailings of particle size -75μm were subjected to microwave pre-heating for 6 minutes in a …
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Framework for managing first party fraud in e-tailing: A case study of the UK retail sector
Although there is a growing volume of research on different types of fraud, relatively little has been written about fraudulent consumer behaviour. Even fewer studies have been written about fraudulent consumer behaviour in the retail sector, nor of the strategies for managing such fraud. This …
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Impact of mine pollution of composition, diversity and structure of plant and ground-dwelling invertebrate communities around Kombat mine tailing dump, Namibia
… invertebrates was investigated at Kombat Mine tailings dump in Namibia. Sixteen transect lines were marked around the dump. Plots, 15m x 15m, were marked at 50m intervals along each transect. Top soils in the demarcated plots were sampled and analysed for concentrations of heavy metals and …
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Pore Scale Simulation of Transport in Porous Media
… appears with non-sorbing solutes and is known as tailing. There are several hypotheses to explain this phenomenon. The modelling is often done using the mobile-immobile model (MIM), which assumes that parts of the solvent are not moving along with the general flow. The solutes can move into these …
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Partnering online : developing a value framework for e-tailers
… within which to analyse and discuss the "e-tailing partnership" - a "horizontal" partnership model in which e-taiIers promote, sell and even bundle one another’s goods in a mutually beneficial partnership. At the core of the framework is the concept of "value". The research draws on marketing …
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Análise do comportamento de um rejeito de minério de ferro no estado do regime permanente
… the steady state line (SSL) of an iron tailing. The resultsallowed determining thestateparameters of the specimens and evaluatingits influenceon the material behavior. To analyse the instability/liquefactionbehavior ofthis iron tailing when subjected to a monotonic undrainedload, the …
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Avaliação tribológica de compósitos de PTFE e rejeito de scheelita aplicáveis a mancais secos
… to investigate, tribologically, a scheelite tailings- filled PTFE composites to dry rubbing journal bearings application, to reduce cost and extend life service of this parts. The tailing of scheelite, obtained from scheelite mining to produce tungsten, is a mineral spoilage composed of …
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Hydrogeochemical and radiometric investigation of the uranium tailings Schneckenstein
… of the environmental contamination risk from the tailings materials. In order to achieve this task, hydrogeological, mineralogical, geochemical, hydrochemical, and isotope studies were conducted at the uranium tailings Schneckenstein. Four cores were taken at the tailing sites by drilling to …
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E-tail vs. retail : the future of the downtown regional shopping center
… approach to explore the potential impacts of e-tailing on place based shopping. The analysis focuses on the downtown regional shopping center as the prototype of study. The value chain concept is applied to disaggregate retailing into its fundamental components and their related real estate …
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Use of IGT/COMFET in zero current quasi resonant converters
… in PWM converters, such as turn off current tailing and latching are largely avoided in a resonant converter. Dynamic saturation loss is identified as the predominant power loss in IGT/COMFET devices for very high frequency resonant operation. Device design change is suggested for very high …
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Mass transfer and dispersion processes in connected conductivity structures : simulation, visualization, delineation and application
… thesis focuses on mass transfer behavior, i.e., tailing, in solute transport, and on hydraulic conductivity heterogeneity. Macrodispersive theory, generally used to incorporate heterogeneity into solute transport, does not account for this tailing and makes assumptions about the structural …
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Arsenic transport in groundwater, surface water, and the hyporheic zone of a mine-influenced stream-aquifer system
… by an abandoned arsenopyrite mine. Mine tailing piles consisting of a host of arsenic-bearing minerals including arsenopyrite and scorodite remain adjacent to the stream and represent a continuous source of arsenic. Arsenic loads from the stream, springs, and groundwater were quantified …
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Economic Potential of Rare Earth Elements Within Accessory Minerals of Granitic Pegmatite Mine Tailings
… feasibility of repurposing current mine waste tailings as a rare earth element resource. Spruce Pine is home to several active quartz and feldspar mining operations, with large waste tailing piles generated during the separation process for quartz and feldspar. The mineralogy, composition, and …
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Assessment of scaling and information requirements of the classical advection dispersion equation and a temporal-nonlocal advection dispersion equation at the MADE site, An
… Equation (ADE) is unable to match. The heavy tailing is due to mass transfer into low velocity zones where dissolved solute becomes relatively immobile for certain periods of time. Transport modeling insufficiencies have led to two additional areas of research: collecting more hydraulic …
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Nutrient availability in mineral sand tailings amended with yard waste compost and wood ash
Mine tailings result from surface mining coastal plain soils and sediments and are redeposited in a slurry form to the mined area. Mine tailing contains a low amount of organic matter, a low pH, and a high P fixation capacity. This research was carried out in the Atlantic Coastal Plain region to …
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Applicazione delle tecniche elettrosmotiche alla consolidazione dei fanghi di risulta dei processi mineralurgici
… of the most important problems is linked to the tailing basins which represent around 40% of the mining waste in the territory. The risk these pose is related to the huge volume of the deposited material, to its chemical and mineralogical characteristics (high concentrations of heavy metals) and …
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Investigation on Revegetation/ Phytoremediation of Campo Pisano abandoned mine area
The contaminated mine tailings rich in toxic metals pose serious environmental threats to the surrounding areas. The reclamation of these mine sites is an economically costly and technically complex process. Phytoremediation is one of the most promising techniques for sustainable, cost-effective …
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