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 67 for “"Oil Droplets"”.
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Intrusion dynamics of small oil droplets from a deep ocean blowout
… an experimental study of the behavior of oil plumes in ambient stratification and a mild current, in which the flow is classified as stratification-dominated. Experiments are conducted in an inverted framework by releasing a continuous stream of dense glass beads from a carriage towed in a …
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Interfacial deformations by active growth of oil-degrading bacteria on oil droplets
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Surface chemical aspects of microbubble flotation
… electrokinetic studies of the hydrocarbon oils used in flotation as collectors have been conducted. Also, the effect of oil emulsifiers on the zeta potential of oil droplets has been studied. In general, oil droplets are negatively charged and negative zeta potential is reduced with the …
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Rheology and microscopy of low calorie mayonnaise-type emulsions made with stearic acid- modified maize and teff starches
… (RVA) and used to prepare LCMTE with the oil replaced at 50%, 80% and 100% in comparison to a full fat mayonnaise. All samples exhibited a shear thinning behaviour and yield stress in terms of flow properties. Modification of teff and maize starches with stearic acid decreased the yield …
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Oil flow from compressor valve to discharge tube
Oil existence is important for compressor operation because it provides lubrication, cooling and sealing. But the discharge process of the compressor inevitably entrains some oil in the refrigerant vapor, which makes oil leave compressor and circulate in the system. For better heat transfer and …
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Flow and separation of the oil from compressor discharge to external separator
Oil is essential for most of the refrigerant compressors, but oil circulating in the refrigeration or air conditioning systems has a side effect on the heat transfer and total efficiency. Oil separator is an important component to reduce the amount of oil circulating in the system and to keep the …
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Intrusion dynamics of particles or droplets released continuously to the deep ocean
… plumes that result from a dispersed phase (e.g., droplets or particles) being discharged continuously into a stratified flowing ambient. Results are relevant to a wide range of natural and man-made applications, including the transport of oil droplets created accidentally during a deep-sea oil …
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Implementation of drop-based oil flow interferometry to estimate wall shear stress in three-dimensional flows
This thesis introduces a simplified drop based oil-film interferometry (OFI) approach using silicone oil droplets to measure wall shear stress in three-dimensional flows. Wall shear stress is a critical parameter in fluid dynamics, significantly affecting aerodynamic drag and turbulent flow …
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High-speed video observation and on-line measurements of oil aeration in an internal combustion engine
Along the oil's journey through the oil lube system, the oil lubricates, cools, removes impurities, supports load, and minimizes friction. At the end of the oil's journey it returns to the sump where it remains nearly motionless until it re-enters the oil pick-up and restarts its journey. This …
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DNA Driven Assembly at Solid and Liquid Interfaces
… approach for introducing mobile DNA linkers on oil droplets, enabling a reversible adsorption of colloids at the oil/water interface. In comparison to previous cumbersome approaches involving expensive biotinylated lipids, this simple method provides a relatively higher grafting density of DNA …
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Enhancement of fluidization and filtration using nanoparticle agglomerates and aerogels
… been studied for the removal of oil from wastewater. The granules are several hundred microns or larger in size, but they have a nano-porous structure that provides large surface area and low density. The hydrodynamic characteristics of the granules during inverse fluidization and …
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Effects of droplet size on intrusion of sub-surface oil spills
… droplet size on droplet intrusion in sub-surface oil spills. Laboratory experiments were performed where glass beads of various sizes, which serve to simulate oil droplets in deepsea oil spills, were released vertically in a quiescent salinity stratified ambient and descended as multi-phase …
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The Treatment of a Food Process Waste Material
… during the production of Malaysian palm oil, for the treatment of the effluent with the concommitant production of a fungel protein, and to investigate the operating characteristics of the continuous aerobic Tower fermenter, with respect to some chemical and physical variables. Initial …
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Modeling the evolution of composition of the fuel and lubricant mixture on the cylinder wall in internal combustion engines
… cylinder liner. This fuel spray mixes with the oil (lubricant) present on the liner. Now the liquid layer on the liner consists of fuel and oil (fuel-oil film is formed) which interacts with the piston rings and the up-scraping of the fuel-oil film can cause the release of oil droplets into the …
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Fabrication and characterization of nano-engineered membranes for oil-water separation
… testing of membranes for separation of water-in- oil (w/o) emulsions. A polycarbonate membrane treated with octadecyltrichlorosilane (OTS) is used to filter a 3 wt% w/o emulsion. The permeate is characterized to have no measurable water content by microscopy, dynamic light scattering (DLS) and …
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Fouling in membrane technology for produced water treatment: Assessing mechanisms, mitigation, and CFD Analysis
… regulations and compliance, the need for oily wastewater treatment and reuse for sustainability has become a pressing reality. Membrane-based technologies for oily wastewater separation have grown in popularity due to their energy efficiency, chemical/thermal resistance, and low cost. The …
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The structure and function of a bovine salivary protein - BSP30b
… GFP-tagged BSP30b binds to the surface of olive oil droplets, as observed by fluorescent microscopy. Bacteria extracted directly from rumen samples indicate that the GFP_BSP30b fusion protein binds to a small number of selected bacterial strains in vivo. These results suggest that BSP30b could …
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Droplet-Based Microfluidics for High-Throughput Single-Cell Omics Profiling
… analysis in pico-/nano-liter water-in-oil droplets. It has been integrated into various library preparation techniques to accomplish high-throughput scRNA-seq, scDNA-seq, scATAC-seq, scChIP-seq, as well as scMulti-omics-seq. These advanced technologies have been providing unique and …
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New Tools for Studying Nanoscale Electrochemical Phenomena
… measurements of nanoparticles. Emulsified oil droplets are monitored with ionic current measurements and fluorescence imaging to reveal their interactions at a nanopore. In Chapter 6 a new method for fabricating nanopores is outlined along with substantial experiments and finite element …
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The suitability of coal-oil and other slurries as blast furnace tuyere injectants
This thesis examines the combustion of coal-oil slurries in the unusual low-recirculation conditions obtaining in the blast furnace tuyere raceway.<br/>A computer-controlled combustion rig was built which would simulate, as nearly as possible, the conditions of air velocity (typically 200 m/s) air …
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