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 Mobility"”.
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Effect of adsorption of non-protolyzable anions on goethite (alpha-FeOOH) mobility
… INTERFACE ARE IMPORTANT CONTROLS ON THE MOBILITY OF MANY INORGANIC IONS IN THE ENVIRONMENT. ANION ADSORPTION ON IRON HYDROXIDE USUALLY DECREASES THE PARTICLE MOBILITY AND MAKES THE PARTICLE SURFACE LESS POSITIVE. HOWEVER, FOR SOME NON-PROTOLYZABLE ANIONS LIKE FLUORIDE AND ARSENITE, THE …
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Effect of particles on evaporation of droplet containing particles
The evaporation of droplet containing insoluble particles has grown into an active area of research due to the needs for nanofluids for applications in heat transfer, combustion, and manufacturing desired micro/nano particles in the pharmaceutical industry. The evaporation of droplets containing …
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Characterization of aerosols in an underground mine
… are a common source of submicron carbon-rich particles. Characterizing morphological and physical attributes of diesel agglomerates is therefore of great importance to be able to identify the source and improve removal technology. Size-segregated sampling was conducted in two phases of …
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Digitale Bildverarbeitung schneller Partikelbewegungen in kolloidalen Suspensionen
The structure and short time particle dynamics of electrostatically stabilized colloidal suspensions was examined with a high-speed camera. The particle positions were extracted from the image sequences by means of digital image processing. Correlation functions in space and time could be …
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Simulating Nanoparticle and Polymer Dynamics in Solution
The dynamics of nanoparticles in complex fluids are of great interest for applications in drug delivery, oil recovery, and materials processing. Particle mobility is well described by the generalized Stokes-Einstein (GSE) relation when the nanoparticles are much larger than the polymers. Violations …
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Spontaneous symmetry breaking transport : from anomalous response to chiral separation
We consider the dynamics of Brownian particles exposed to symmetric periodic potentials and driven out of equilibrium by symmetric driving forces at several examples. For any non-zero temperature, the average velocity vanishes but there may be dynamical states of sustained transport spontaneously …
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Contributions Toward Understanding the Effects of Rotor and Airframe Configurations On Brownout Dust Clouds
… tail rotor. For the dispersed phase of the flow, particle tracking was used to model the dust cloud based on solutions to a decoupled form of the Basset-Boussinesq-Oseen equations appropriate to dilute gas particle suspensions of low Reynolds number Stokes flow. Important aspects of particle …
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Measuring Aerosol Nanoparticles By Ultraviolet Photoionisation
… have indicated that ultrafine aerosol nanoparticles, those under 100 nm in diameter, may have significant health impacts due to their relatively high number concentration, surface area and potential for deep penetration into the human lung. However, epidemiological evidence remains limited …
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Aerosol Route Synthesis and Applications of Doped Nanostructured Materials
… were independently controlled based on nanoparticle formation and growth mechanisms dictated by process control parameters. Copper dopant found to significantly affect TiO2 properties such as particle size, crystal phase, stability in the suspension, and absorption spectrum: shift from UV to …
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Remote estimation of grain size distribution and simulating grain size effects on debris-flow rheology and post-fire variability of transport by dry ravel
… changes in vegetation density controlled particle mobility. Following these efforts, a workflow involving machine learning and a novel clustering approach (termed DBloops) was developed to extract the size distribution of angular cobble and boulder sized clasts from point clouds of …
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The cold atom toolbox in momentum space
… to this localization transition (single-particle mobility edge) in two ways: with the addition of more tunneling pathways, and by modifying the form of the potential. Finally, we have studied the effects of nonlinear inter-atomic interactions in the momentum-space lattice, observing …
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The impact of run-of-river dams on channel morphology and sedimentation
… of the dams on backwater conditions and on particle mobility upstream and downstream of the dams. The results of this research show that the morphological and sedimentological effects caused by run-of-river dams are relatively minor compared to systematic patterns of upstream sedimentation …
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Particle Charging and Classification: The Mass Mobility Aerosol Spectrometer (M2AS)
… Many aerosol quantification methods rely on particle charging and classification techniques, where particles are charged and classified based on their electrical mobility or mass-to-charge ratio. Diffusion charging is commonly used to impart a known charge to particles, enabling precise …
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Microscale dynamics in suspensions of non-spherical particles
… in suspensions of spherical and non-spherical particles. Two new algorithms were developed to enable studies with accurate hydrodynamics. The first algorithm was a high accuracy Stokesian Dynamics technique (SD) extended to a generic non-spherical particle shape. The many body interactions were …