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Skip to Search Results- 10Graduate and Postdoctoral Studies (GPS), Faculty of
- 10Graduate and Postdoctoral Studies (GPS), Faculty of /Theses and Dissertations
- 1Agricultural, Food and Nutritional Science, Department of
- 1Agricultural, Food and Nutritional Science, Department of/Journal Articles (Agricultural, Food and Nutritional Science)
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An Investigation of Millerite (beta-NiS) Flotation Behaviour in Alkaline Solutions in Cu-Ni Sulphide Mineral Flotation Separation
DownloadFall 2021
In the Sudbury Basin nickel deposit, the presence of a less common nickel sulphide mineral – millerite (beta-NiS) has a substantial impact on the Cu/Ni flotation separation efficiency. In this study, the flotation chemistry of millerite in alkaline solutions was investigated with pure minerals...
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Inactivation of Escherichia coli population on fruit surfaces using ultraviolet-C light: Influence of fruit surface characteristics
Download2013-01-01
Syamaladevi, Roopesh M., Lu, Xiaonan, Sablani, Shyam S., Insan, Sunil Kumar, Adhikari, Achyut, Killinger, Karen, Rasco, Barbara, Dhinga, Amit, Bandyopadhyay, Amit, Annapure, Uday
Ultraviolet-C (UV-C 254 nm) light is a possible alternative for chemical disinfection of fresh fruits. However, studies on the influence of surface characteristics on the kinetics of UV-C inactivation of microorganisms on fruits are limited. In this study, UV-C inactivation of generic Escherichia...
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Spring 2014
Crude oils contain a distribution of molecules with diverse chemical structures and molecular weights. Asphaltenes are considered the most problematic of these structures. We have investigated the adsorption and aggregation of asphaltenes on surfaces using scanning probe microscopy. Modifying the...
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Observing and Manipulating Single Electrons Confined to Silicon Dangling Bond Ensembles with Non-Contact Atomic Force Microscopy
DownloadFall 2018
Non-contact atomic force microscopy (nc-AFM) is capable of inducing and resolving single-electron charge transitions of surface adsorbates. Here, these techniques are extended by studying the charge configurations of dangling bond (DB) ensembles on the hydrogen-terminated silicon surface. nc-AFM...
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Probing Deformable Oil-Water Interfaces by Atomic Force Microscopy and Cascade Partial Coalescence Measurements
DownloadFall 2016
Phase separation of stable oil-in-water and water-in-oil emulsions poses major challenges for a variety of industries, including the petroleum industry. The stability and destabilizing of petroleum emulsions highly depend on interfacial properties such as surface/interfacial charges, interfacial...
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Spring 2014
Froth flotation is one of the most common methods in the mineral industry for selective extraction of a small fraction of desired mineral from a finely mixed ground ore. This work explores the development of a fundamental dynamic model for froth flotation with parameters of the model being...
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Fall 2021
Pentlandite is very important to the mining industry since it is the main source of metallic nickel. However, its separation from hexagonal pyrrhotite is a challenge for processing engineers due to the similar floatabilities of these sulfide minerals. An inefficient separation of these minerals...
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Fall 2009
Microcantilever sensor has gained much popularity because of its high sensitivity and selectivity. It consists of a micro-sized cantilever that is usually coated on one side with chemical/biological probe agents to generate strong attraction to target molecules. The interactions between the probe...
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Surface Oxidation of Millerite and its Galvanic Interaction with Chalcopyrite in Collectorless Flotation
DownloadFall 2021
Surface analysis of millerite and chalcopyrite were performed to enhance the understanding of fundamental millerite flotation behaviour in single mineral and mixed mineral conditions. By studying the mineral surfaces without collector addition, the ambiguity about the origin of the formed...
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Spring 2019
Oil-assisted flotation is one of the most promising techniques in fine mineral particle recovery in the beneficiation of low-grade finely-disseminated ores. However, literature reports show that when non-polar oil is used in conjunction with different types of collectors, the flotation response...