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 14 of 14 for “"Particle Mixing"”.
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Non-Symmetrized Hyperspherical Harmonics Method Applied to Light Hypernuclei
… treat quantum systems with different species of particles and additional degrees of freedom, like particle mixing. The aim is to introduce it as a new tool in the ab-initio study of light hypernuclei, and, more in general, of few-body quantum systems composed by a variety of different objects. To …
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Investigation of the evolution of atmospheric particles with integration of the stochastic particle-resolved model PartMC-MOSAIC and atmospheric measurements
… emission, or can be also formed through gas- particle conversion processes. Aerosol particles in the atmosphere often represent a complex mixture of a wide variety of species, and the mixing state can change during the evolution of particles in the ambient environment, leading to significantly …
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Computer simulations for a scholastic theory of granular drainage
… with the purpose of simulating the behavior of particles in the silo was developed by the author, and several results were obtained using simulations carried out with this implementation. As regards particle streamlines, average velocity profiles, predictions of particle mixing and of particle …
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Sub-grid process analysis of the sensitivity of black carbon aging to particle microphysical properties at emission
… properties of black carbon-containing particles change due to interaction with other aerosol components after emission, altering their radiative properties and cloud condensation nuclei activity. Understanding these aging processes is essential in assessing black carbon’s direct and …
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Drying kinetics of pepper in swirling fluidized bed dryer
… study, the SFBD exhibited excellent particle mixing with relatively low bed pressure drop. Four regimes of operation were discovered namely the packed regime, minimum fluidization, minimum swirling and swirling regime. As for the drying studies, lower bed loadings and higher drying …
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The influence of macrofauna on intertidal sediment stability and biogeochemical properties.
… microphytobenthos biomass and health, sediment particle size and size distribution, sediment water content, chlorophyll a and b concentration, and colloidal carbohydrate concentration. Mudflat sediment macrofaunal biomass was removed using cryo-defaunation and the abundances of three common …
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Solids motion in fluidised beds of fine particles
… for the past 70 years, the interaction between particles and rising bubbles and the general solids motion in bubbling fluidised beds are still not fully understood. The work presented in this thesis uses the method known as Positron Emission Particle Tracking (PEPT) to track the motion of a …
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Some Aspects of the Performance of Rotating Fluidized Beds
… fully fluidized bed pressure drop, effect of particle size and limits for fluidized bed combustion. The fluidization results were compared with modified stationary fluidized bed theories and empirical correlations developed for minimum fluidizing velocity and fully fluidized bed pressure drop. …
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Micron-bubble streaming flow towards micron to sub-micron sized sorting
… great potential in the applications of micro-particle manipulation (e.g. size dependent trapping, sorting, and focusing etc.). The main object of this thesis work is to extend towards much smaller sized particle sorting down to 1μm and sub-micron. On top of that, we want to further explore the …
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Bioremediation of ethanol in air using a gas-fluidized bioreactor
… a comparable packed bed. Microorganisms on the particles biodegrade contaminants in the polluted air, which flows up through the bed. At high flowrates, the polluted air fluidizes the particles, while at low velocities the operation is in packed bed mode.Initially, sawdust was selected for use …
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Studies in three phase gas-liquid-solid fluidised systems
… parameters, phase holdups (gas and solid), particle mixing and segregation, and phase flow dynamics (flow regime and circulation patterns). The studies have focused particularly on the solid behaviour and the influence of properties of solids present on the above parameters in three-phase, …
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Spray Techniques And Lung Cancer Chemoprevention
… THES) to generate chemopreventive agent particles. Six single agents and three combinational agents, both natural and synthetic compounds, were investigated in the first part of this dissertation work. Polyphenon E and Polyphenon E without EGCG, which are mixtures of tea catechins, were …
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Fluidization and soot filtration in a rotating fluidized bed
… an understanding of the nature of fluidization, particle mixing and filtration in the RFB. In an RFB, particles are subject to a centrifugal force which can be much larger than the force of gravity. Therefore the Geldart classification for conventional fluidized beds must be modified for rotating …
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Transport of trace metals in nearshore sediments
… constituents important to metal cycling, and of particle and solute transport rates could be made at the same site. In addition, a direct, in situ study of the interaction of chemical and transport processes was undertaken using radiotracer techniques. Thus, the study emphasizes the mechanisms of …