Browsing Department of Chemical Engineering Graduate Theses by Title
Now showing items 200-219 of 286
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Numerical model of Ni-infiltrated porous anode solid oxide fuel cells
(2012-06-14)A numerical model for solid oxide fuel cells with Ni-infiltrated porous anode has been described. The novel contribution of the work is the development of a semi-continuous film model to describe the infiltrated Ni-phase. ... -
Numerical Modeling of the Effect of Sulfur Poisoning on the Performance of the Porous Anode Solid Oxide Fuel Cell
(2014-11-11)A numerical model to capture the effect of H2S impurities on the Solid Oxide Fuel Cell (SOFC) performance with Ni-based porous anode is developed. H2S impurities can adversely affect the fuel cell performance, due to the ... -
Obstructions to Motion Planning by the Continuation Method
(2013-01-03)The subject of this thesis is the motion planning algorithm known as the continuation method. To solve motion planning problems, the continuation method proceeds by lifting curves in state space to curves in control space; ... -
Obtaining a quality model for manufacturing systems and establishing a maintenance-quality link
(2008-06-25)This thesis describes the application of the stochastic-flow-modeling (SFM) approach to represent the quality behavior of a manufacturing system. Initially, a simple, one-product type SFM is discussed and then a more ... -
Obtaining the Best Model Predictions and Parameter Estimates Using Limited Data
(2011-09-27)Engineers who develop fundamental models for chemical processes are often unable to estimate all of the model parameters due to problems with parameter identifiability and estimability. The literature concerning these two ... -
On the regioselectivity of H-atom abstraction from model polyolefins by alkoxyl radicals
(2011-10-24)Solvent-free peroxide-initiated polymer modifications are widely used to improve the physical and/or chemical properties of commodity plastics and elastomers. Although the reactions that underlie polymer grafting are known, ... -
On-Line Optimization for a Batch-Fed Copolymerization Reactor with Partial State Measurement
(2009-10-06)Polymerization processes require adequate monitoring to ensure that the final product meets specification. Various on-line measuring techniques have been developed and implemented to track polymer properties in reactors. ... -
Optimization and Biological Characterization of Decellularized Adipose Tissue Scaffolds for Soft Tissue Reconstruction
(2014-01-30)It would be a great advantage in reconstructive surgery to have an off-the-shelf biomaterial to promote regeneration and volume augmentation following soft tissue damage. With this long-term objective, human adipose tissue ... -
Parameter estimation in nonlinear continuous-time dynamic models with modelling errors and process disturbances
(2008-06-25)Model-based control and process optimization technologies are becoming more commonly used by chemical engineers. These algorithms rely on fundamental or empirical models that are frequently described by systems of differential ... -
Parameter Estimation Techniques for Nonlinear Dynamic Models with Limited Data, Process Disturbances and Modeling Errors
(2013-12-23)In this thesis appropriate statistical methods to overcome two types of problems that occur during parameter estimation in chemical engineering systems are studied. The first problem is having too many parameters to estimate ... -
Parameter identifiability of biochemical reaction networks in systems biology
(2008-08-14)In systems biology, models often contain a large number of unknown or only roughly known parameters that must be estimated through the fitting of data. This work examines the question of whether or not these parameters ... -
Parameter Inference and Estimability Analysis for Nonlinear Multi-Response Systems by Means of Profiling
(2014-10-01)Determining the inference bounds for parameter estimates in multi-response models is a challenge for research and industry since potential co-dependencies among responses add to the complexity of the problem. Statistical ... -
Peroxide Curable Butyl Rubber Derivatives
(2012-07-06)Isobutylene-rich elastomers bearing functional groups that engage N-arylmaleimides in C-H bond addition and/or alternating copolymerization are described. While inactive to cross-linking when treated at high temperature ... -
Peroxide-Curable Macromonomer Derivatives of Isobutylene-Rich Elastomers
(2014-01-30)Macromonomers bearing oligomerizable C=C functionality have been prepared by the nucleophilic displacement of allylic bromide functionality on brominated poly(isobutylene-co-isoprene) (BIIR). Whereas commercial grades of ... -
Peroxide-initiated Modification of Polylactic acid (PLA) and Poly(3-hydroxyalkanoates) (PHAs) in the Presence of Allylic and Acrylic Coagents
This thesis investigates the fundamentals of modification of polylactic acid (PLA) and poly(3-hydroxyalkanoates) (PHAs), focusing on improving the understanding of the reactivity of these ... -
Polymer micelles for the protection and delivery of specialized pro-resolving meditators
Specialized pro-resolving mediators (SPM) play a pivotal role in the resolution of acute inflammation events and have recently gained interest as a treatment for chronic inflammation. Polymer micelles are a promising ... -
Polymer Process Partitioning: Extruding Plastic Pipe
(2016-09-14)When plastic pipe is solidified, it proceeds through a long cooling chamber. Inside this chamber, inside the hollow extrudate, the plastic is molten, and this inner surface solidifies last. Sag, the flow due to the ... -
Polymeric Ionic Liquid Compositions for In-Situ Product Removal Bioreactor Applications
Although the biosynthesis of n-butanol and succinic acid can afford renewable fuels, solvents, and chemical intermediates, these bioprocesses suffer from the cytotoxicity of their end products, leading to reduced production ... -
Polymeric Liquid Behavior in Oscillatory Shear Flow
One of the great challenges in chemical engineering is to predict physical properties from molecular structure. Predicting transport properties presents special challenges, especially for macromolecular structures. This ... -
Polymeric Substances and Microbial Communities in Source Water and in Biofiltration Processes in the Treatment for Drinking Water
(2015-02-04)The application of membrane filtration for drinking water treatment is limited by membrane fouling due to the accumulation of biopolymers. Biofiltration may be an effective pretreatment approach to reduce the biopolymers, ...