Thesis (M. Div.)--Grace Theological Seminary, 1985. / Abstract. Bibliography: leaves 69-72.

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In the development of a non-aqueous bitumen extraction process, a major obstacle is solvent loss due to hydrocarbon attachment to the reject sand grains. A proposed solution to this problem is to wash (i.e. remediate) the oil-contaminated sand grains with water and surfactants. This research is focused on developing a protocol to evaluate the performance of particular surfactant types and water chemistry; emphasis was placed on using minimal amounts of water to recover the residual oil. To start, a series of jar tests were conducted (using heptane and hexadecane as solvents)to study the phase behaviours of oil-water-surfactant ternary systems. This was followed by the development of a new washing protocol for the purpose of evaluating remediation performance. Finally, the correlation between overall remediation performance and the oil-water interfacial tension was discussed.

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Source: Masters Abstracts International, Volume: 47-06, page: 3556. Adviser: T. Robert Harris. Includes bibliographical references.

Introduction: Hand hygiene, the most effective and economical way to prevent the transmission of many bacteria and viruses in healthcare settings, yet, its compliance rate remained unacceptably poor in many countries. Compliance with hand hygiene among healthcare workers increased substantially during outbreak of serious acute respiratory symptoms (SARS) in 2003 but decreased to the baseline after SARS, to improve compliance rate sustainable, many hand hygiene intervention programs have been established since 2003. However, the effectiveness of these programs were in big variations. The objectives of this review were to identify the effectiveness of these hand hygiene intervention programs. Methods: This review was conducted using the search engines – PubMed. The key words “hand hygiene”, “hand-washing”, “compliance”, “healthcare personnel”, and “program*” were used for searching literature published from 2003 to July 2012.. Forty-Seven articles were initially obtained. After screening and reviewing of these articles,9 articles met the requirements for inclusion and exclusion criteria were included in this review. The outcome measure was set as the differences and relative ratios in the observed hand hygiene compliance rate before and after intervention. Results: Results showed that 8 hand hygiene programs were effective while 1 programme was ineffective in improving hand hygiene compliance rates. Of the eight studies that reported improvement in compliance with hand hygiene, improvement in compliance rate after the interventions was ranged from (24% to 50%) while the relative ratio of compliance (after vs. before intervention) was ranged from 1.78 to 4. The study that reported no improvement in compliance with hand hygiene had a relative high naseline hand hygiene compliance rate of 61% Conclusion: Hand hygiene programs that improve compliance rate among healthcare workers were effective overall. The effectiveness of hand hygiene programs seemed to be positively associated with the numbers of intervention types involved. Research on non-compliance and intrapersonal behavior on hand hygiene was suggested for future investigation. / published_or_final_version / Public Health / Master / Master of Public Health

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Mechatronics involves the combination of the disciplines of Mechanical Engineering and Electrical Engineering with computer technology. The purpose of this work is to incorporate mechatronics technology into a novel experimental apparatus and perform a series of experiments to generate data on the filter cycle using this novel technique. The experimental data generated are compared with results obtained from a selection of existing theoretical models which successfully demonstrates the advantages of the novel technology used.