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Skip to Search Results- 1Afshar, Shima
- 1Aldhaleai, Ahmed Mahmood
- 1Bozorg Bigdeli, Masoud
- 1Chan, T.
- 1Chen, Huanchen
- 1Chini, Seyed Farshid
- 16Graduate and Postdoctoral Studies (GPS), Faculty of
- 16Graduate and Postdoctoral Studies (GPS), Faculty of/Theses and Dissertations
- 1Chemical and Materials Engineering, Department of
- 1Chemical and Materials Engineering, Department of/Research Articles and Materials (Chemical and Materials Engineering)
- 1Mechanical Engineering, Department of
- 1Mechanical Engineering, Department of/Journal Articles (Mechanical Engineering)
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Spring 2010
Molecular dynamics simulation and density functional theory were applied to calculate heats of immersion (ΔHimm) of n-heptane, toluene, pyridine and water on two model sand surfaces and two model clay surfaces. Our results indicated that water showed the highest ΔHimm for the model clay surfaces...
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Fall 2012
Last couple of decades have witnessed massive upsurge in efforts of transporting and manipulating solutes and moieties in microfluidic devices. Classical pressure-driven transport demands massive pumping power for microchannels making it unusable in several microfluidic applications. Accordingly,...
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Spring 2013
This thesis is concerned with the effect of mechanical wear on superhydrophobic surfaces (SHS). This work, for the first time, systematically details the simultaneous surface topography and wetting behavior changes upon abrasion of SHS. The process of physical abrasion was also simulated on the...
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Spring 2013
Removal of a drop from its substrate may be gradually (e.g. evaporation) or all at once (e.g. shedding). In this thesis, drop adhesion force as a base for understanding the all at once removal of a drop from its substrate, and drop evaporation in room temperature as one of the gradual removal...
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Colloid Science of Sand Remediation: A Study Motivated by the Non-Aqueous Extraction of Bitumen from Oil Sands
DownloadFall 2014
The current water-based method of bitumen extraction requires withdrawal of fresh water from the Athabasca River — a practice which leads to the continual buildup of tailings ponds and other environmental concerns. As Alberta’s bitumen production is expected to more than double by 2020, there is...
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Fabrication and Characterization of Photolithographically Patterned Rough Surfaces Demonstrating Extreme Contact Angle Behavior
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This thesis features experimental work done to fabricate and characterize silicon surfaces patterned using photolithographic techniques, both standard and novel, to produce a variety of surfaces with roughness of controlled geometric properties. In specific, one set of the surfaces fabricated...
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Fall 2015
Drop transfer from one solid surface to another through stretching liquid bridges between them is important for many industrial applications. Due to the different dominate forces, three possible regimes exist: Quasi-static Regime, where the transfer process is only dominated by surface forces;...
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Spring 2015
The minable oil sands extraction process can be understood on a scale of a single oil sand grain. When the oil sand ore is mixed with warm water, each sand granule is initially covered with bitumen film which ruptures under the composite effect of shear and interfacial forces, while water...
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Rheology of Bitumen at the Onset of Asphaltene Aggregation and its Effects on the Stability of Water-in-Oil Emulsion
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Asphaltenes are the heaviest fraction of bitumen. Asphaltenes not only play an important role in the high viscosity of bitumen but also in the water-in-oil (W/O) emulsion stability. Nevertheless, their exact function in the stability mechanism of W/O emulsion still remains unresolved. It is...
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Petroleum Diesel-Assisted Ambient Temperature Aqueous-Nonaqueous Hybrid Bitumen Extraction Process
DownloadFall 2017
Solvents are used in the oil sands industry to reduce the viscosity of bitumen and hence to assist recovery of bitumen prior to its upgrading. Solvents can also be added to the ores to reduce energy consumption during the aqueous-nonaqueous hybrid bitumen extraction process at ambient conditions....