Thesis (M.S.)--Ball State University, 2009. / Title from PDF t.p. (viewed on Dec. 14, 2009). Includes bibliographical references.

Thesis (M. Sc.)--University of Alberta, 2009. / Title from pdf file main screen (viewed on Dec. 11, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Department of Civil and Environment Engineering , University of Alberta." Includes bibliographical references.

No description available.

For one hundred years, the mighty blast furnaces of Stelco have burned, melted, and forged the identity of Hamilton, Ontario, into the epitomic Steeltown of Canada. Now US Steel Canada, its recently announced closure has silenced the operation that once defined Hamilton itself, leaving in its wake an array of ruined machines upon a toxic wasteland. But is it really a wasteland? Could the energy latent in the site, its architecture, and its history be recovered? In order to propel the city towards a more sustainable future, could its degradation be used as an agent for change, to transform the site and even provide the basis for a new hybrid industry? This thesis proposes an architectural design for a recalibrated steel industry on the site whose excess energy output is used to fuel a new industry of greenhouses. These greenhouses nurture plants to be used in the gradual bioremediation of the contaminated landscape into a site of both active industry and civic amenity. Through the re-ignition of the blast furnace and the subsequent design opportunities it creates, the site becomes an extension of the civic realm rather than an obstruction to it. Three areas of focus define this thesis proposal. The first is an exploration into the opportunities latent in ruination, both architecturally through entropy and in landscape through toxic contamination. This is followed by an investigation into the century-old relationship between Stelco and Hamilton, and how this history has created the current state of tension between industry and city. Finally, through the re-imagination of the blast furnace and its output, this thesis positions the site as part of an energy flow that links industry with its landscape, and both with the city in which they reside.

No description available.

No description available.

Remediation of pre-clerkship students for deficits in basic science knowledge should help them overcome their learning deficiencies prior to clerkship. However, very little is known about remediation in basic science knowledge during pre-clerkship. This study utilized the program theory framework to collect and organize mixed methods data of the remediation plan for pre-clerkship students who failed their basic science cognitive examinations in a Canadian medical school. This plan was analyzed using a logic model narrative approach and compared to literature on the learning theories. The analysis showed a remediation plan that was strong on governance and verification of scores, but lacked: clarity and transparency of communication, qualified remedial tutors, individualized diagnosis of learner’s deficits, and student centered learning. Participants admitted uncertainty about the efficacy of the remediation process. A remediation framework is proposed that includes student-centered participation, individualized learning plan and activities, deliberate practice, feedback, reflection, and rigorous reassessment

No description available.

This study was designed to develop an in-situ flushing system for remediating metal-contaminated soils. Specifically, the capabilities of citric acid, an organic acid, to extract metal ions from a metal-contaminated sandy soil, containing 0.42, 0.04, 0.01, and 41.52 mg g-1 of Zn, Cu, Cd, and Pb, respectively, were tested at bench-scale and large-scale levels. Citric acid, at pH 5.5, was used at different levels of concentration and retention time in batch experiments to establish optimum conditions for the maximum removal of heavy metals from the soil. Citric acid exhibited a tremendous potential to extract metal ions from the metal-contaminated soil. The extraction of metal ions increased with an increase in citric acid concentration. A column study (height = 0.6 m; internal diameter = 0.1 m) was conducted to compare metal leaching with surface and subsurface application of citric acid. The results indicated that the subsurface application resulted in a more efficient extraction of metal ions due to uniform distribution of the citric acid. / Finally, a large-scale experiment involving soil columns (height = 1.0 m; internal diameter = 0.2 m) was carried out to develop an in situ soil flushing system to remediate the metal-contaminated soil. Citric acid was supplied into the soil columns through a subsurface irrigation system. This process resulted in an overall extraction of Zn, Cu, Cd, and Pb ions from the soil columns at 83.27%, 1.47%, 16.70%, and 26.55%, respectively. Results obtained in different experimental protocols suggested that continuous flushing of the soil is a suitable method for extracting metal ions from the contaminated soil using citric acid. / The metal-rich leachate was effectively treated with chitosan flakes. Results indicate that for 0.1 M citric acid leachate containing 0.06, 0.02, 0.003, and 5.87 mumoles ml-1 of Zn, Cu, Cd, and Pb, respectively, about 20 g of chitosan would be sufficient to remove about 50% of the contaminants from one liter of leachate in 6 h. Various batch experiments involving pure solutions of metal ions as well as the metal-rich leachate were conducted to establish the metal adsorption properties of chitosan under various physico-chemical conditions. The controlled parameters were the amount of chitosan, reaction time with and without shaking, and the pH of the solution. The sorption of metal ions from pure metal solutions and the leachate was not improved by the agitation, and the maximum adsorption of metal ions onto chitosan flakes occurred at pH 6.0. Sorption equilibrium studies were also conducted with a constant sorbent weight and varying initial concentration of metal ions. The experimental data of adsorption from the solutions, containing metal ions, were found to correlate well with the Langmuir isotherm equation.

Remediation of pre-clerkship students for deficits in basic science knowledge should help them overcome their learning deficiencies prior to clerkship. However, very little is known about remediation in basic science knowledge during pre-clerkship. This study utilized the program theory framework to collect and organize mixed methods data of the remediation plan for pre-clerkship students who failed their basic science cognitive examinations in a Canadian medical school. This plan was analyzed using a logic model narrative approach and compared to literature on the learning theories. The analysis showed a remediation plan that was strong on governance and verification of scores, but lacked: clarity and transparency of communication, qualified remedial tutors, individualized diagnosis of learner’s deficits, and student centered learning. Participants admitted uncertainty about the efficacy of the remediation process. A remediation framework is proposed that includes student-centered participation, individualized learning plan and activities, deliberate practice, feedback, reflection, and rigorous reassessment