Browsing Theses by Title
Now showing items 11423-11442 of 15617
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Preparation of Ruthenium and Iridium Pincer-Type Pyridylidenes
(University of Waterloo, 2009-08-31)A new POCOP pincer-type ligand was synthesized and characterized. This new ligand gave rise to the first POCOP pyridylidene pincer-type ruthenium and iridium complexes. Investigations into structural and electronic parameters ... -
Preparation of Thermoplastic Vulcanizates from Devulcanized Rubber and Polypropylene
(University of Waterloo, 2013-04-22)One of the current problems faced by mankind is the problem of safe disposal of waste rubber. Statistics show that the number of waste tires is continuously increasing at a very rapid rate. Since rubber materials do not ... -
Preparation, Characterization and Performance of Poly(vinyl alcohol) based Membranes for Pervaporation Dehydration of Alcohols
(University of Waterloo, 2008-09-24)Pervaporation (PV), a non-porous membrane separation process, is gaining considerable attention for solvent separation in a variety of industries ranging from chemical to food and pharmaceutical to petrochemicals. The most ... -
Preparation, characterization, and evaluation of Mg-Al mixed oxide supported nickel catalysts for the steam reforming of ethanol
(University of Waterloo, 2008-01-22)The conversion of ethanol to hydrogen or syngas can be achieved by reacting ethanol with water via steam reforming, CH3CH2OH + (1-x)H2O = (4-x)H2 + (2-x)CO + xCO2 (R.1) CH3CH2OH + H2O = 4H2 + 2CO (R.2) CO + H2O = ... -
Preparing and Tuning the Reactivity of Palladium Carbenes and an Unusual Catalytic Isomerization of Diphenylcyclopropanes
(University of Waterloo, 2007-09-26)The preparation of palladium carbene intermediates from diphenylketene is proposed. Experiments to trap these intermediates with alkenes have been conducted and optimized, with cyclopropanes being prepared in up to 69% ... -
Preparing for the Eschaton: A Theology of Work
(University of Waterloo, 2010-10-27)Work occupies a significant part of our lives, and yet it is often not given sufficient attention. Certainly there is much consideration given to finding a career, and succeeding in work, but not enough to how our work ... -
Preparing Nanotubes via Polymerization of Diacetylene Functionality Containing Carbon-based Macrocycles
(University of Waterloo, 2013-09-05)Nanofibers and nanotubes have been extensively studied in materials science due to their extraordinary thermal conductivity, excellent mechanical and electrical properties, and their potential capability for gas storage. ... -
Prepositional Phrase Attachment Disambiguation Using WordNet
(University of Waterloo, 2006)In this thesis we use a knowledge-based approach to disambiguating prepositional phrase attachments in English sentences. This method was first introduced by S. M. Harabagiu. The Penn Treebank corpus is used as ... -
Preprocessing and Reduction for Semidefinite Programming via Facial Reduction: Theory and Practice
(University of Waterloo, 2013-11-26)Semidefinite programming is a powerful modeling tool for a wide range of optimization and feasibility problems. Its prevalent use in practice relies on the fact that a (nearly) optimal solution of a semidefinite program ... -
Preschoolers’ reasoning about the “how”, “what” and “when” of ownership.
(University of Waterloo, 2016-03-30)My dissertation includes three papers. Paper one investigates preschoolers’ appreciation of how people become owners. In two experiments, 70 3-to-5-year-olds were asked to explain why a character owns, likes, or uses certain ... -
Prescriptive Semantics For Big-Step Modelling Languages
(University of Waterloo, 2011-02-22)With the popularity of model-driven methodologies and the abundance of modelling languages, a major question for a modeller is: Which language is suitable for modelling a system under study? To answer this question, one ... -
A Present Absence
(University of Waterloo, 2017-06-14)For the last ten years I have travelled with my camera out on the roads of the Canadian prairies, usually for a few days at a time, up and down stretches of highways, grids, and back roads, stopping to investigate whatever ... -
Preservation and Development at the Great Wall World Heritage Sites, China
(University of Waterloo, 2010-01-22)Heritage preservation and tourism development are inevitably intertwined at heritage sites. The relationships between tourism use and the preservation of heritage resources are characterized by both symbioses and tension ... -
The Preservation and Stewardship of Archaeological Sites in the Boreal Forest: A Public Issues Approach
(University of Waterloo, 2014-01-23)Archaeological sites in the boreal forest are facing threats due to urban development, resource exploitation, vandalism, and infrastructure development, among others. In the context of archaeological site preservation as ... -
A Preservationist Approach to Relevant Logic
(University of Waterloo, 2014-08-29)The semantics I develop extend an approach to logic called preservationism. The preservationist approach to logic interprets non-classical consequence relations as preserving something other than truth. I specifically ... -
Preserving Arctic Archaeology in the 21st Century: Threats of Climate Change
(University of Waterloo, 2010-12-16)Archaeological sites around the world are facing many challenges. These challenges include urban expansion, resource exploitation, tourism, governmental infrastructure programs such as road development and one of the ... -
Preserving Measured Structure During Generation and Reduction of Multivariate Point Configurations
(University of Waterloo, 2018-05-30)Inherent in any multivariate data is structure, which describes the general shape and distribution of the underlying point configuration. While there are potentially many types of structure that could be of interest, ... -
Preserving Texture Boundaries for SAR Sea Ice Segmentation
(University of Waterloo, 2004)Texture analysis has been used extensively in the computer-assisted interpretation of SAR sea ice imagery. Provision of maps which distinguish relevant ice types is significant for monitoring global warming and ship ... -
Pressure Sensor Placement for Leak Diagnosis under Demand Uncertainty in Water Distribution Systems
(University of Waterloo, 2019-01-24)Leakages in concealed pipes in urban water distribution systems (WDS) can cause losses of up to 25% of potable water supply in municipalities. These losses are not only a tremendous waste of water but also the energy spent ... -
Pressure Wave Velocity Using High-Frame-Rate Ultrasound Imaging for Urodynamic Study
(University of Waterloo, 2023-01-16)Benign Prostatic Hyperplasia (BPH) is a noncancerous urologic condition in aging males where an overgrowth of the prostate gland occurs. It notably leads to lower urinary tract symptoms ranging from inconvenient nocturia ...