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Articles 1 - 6 of 6
Full-Text Articles in Engineering
Quantifying Individual Losses In A Direct Methanol Fuel Cell, Jennifer Rae Ruffing
Quantifying Individual Losses In A Direct Methanol Fuel Cell, Jennifer Rae Ruffing
Theses and Dissertations
The performance of a direct methanol fuel cell (DMFC) is complicated due to the complex interactions of kinetic and transport processes. As a result, changes in one aspect of the cell have consequences in other aspects, which are difficult to elucidate from the full-cell polarization (i.e. voltage vs. current) behavior that fuel cell researchers often use to characterize the performance of their systems. The objective of this work was to develop a strategy to use current and voltage relationships from anode half cells, cathode half-cells, and a hydrogen pump, coupled with methanol crossover data and a mathematical model, to quantify …
Mechanism Of Insulin Aggregation: Applied To Alzheimer's Disease, Milos Atz
Mechanism Of Insulin Aggregation: Applied To Alzheimer's Disease, Milos Atz
Honors Scholar Theses
Alzheimer’s disease, a debilitating neurodegenerative illness, is caused by the irreversible aggregation of beta-amyloid proteins in the brain. In Alzheimer’s brains, the protein can become disfigured, causing it to aggregate into long, insoluble fibers that deposit on brain tissue. Studying the aggregation mechanisms of amyloid proteins can lead to a deeper understanding of the progression of Alzheimer’s disease and possibly point towards a potential cure or treatment for the disease. Heat induced aggregation of insulin provides a model system to study the aggregation of amyloidogenic proteins. This study investigates the early stages of heat induced insulin aggregation using dynamic light …
Design And Construction Of A Chemical Engineering (Cheme) Car Using Thermoelectrics, Timothy Barnhill, Sara Davino, Spencer Faltin, Lauryn Jamison, Christina Papadimitrio, Mccall Rogers
Design And Construction Of A Chemical Engineering (Cheme) Car Using Thermoelectrics, Timothy Barnhill, Sara Davino, Spencer Faltin, Lauryn Jamison, Christina Papadimitrio, Mccall Rogers
Senior Theses
Six chemical engineering undergraduates at the University of South Carolina formed a team to compete in the 2014 AIChE Chem-E-Car competition at the Southern Regional Student Conference in San Juan, Puerto Rico, in March. In the Chem-E-Car competition, students must design and build a vehicle powered by an unconventional form of chemical energy to carry a specified weight over a given distance (1). The group used knowledge gained through undergraduate study to construct a small-scale vehicle that is powered by a set of thermoelectric generators utilizing a heat gradient between boiling water and an ethanol-dry ice mixture (2). An iodine …
Avoiding Aggregation During Drying And Rehydration Of Nanocellulose, Evelyn Fairman
Avoiding Aggregation During Drying And Rehydration Of Nanocellulose, Evelyn Fairman
Honors College
Nanocellulose has attracted attention from academic researchers and industrial corporations worldwide. It is a sustainable raw material with remarkable strength and rheological properties. The industrial production of nanocellulose is an aqueous process; however, many of its valuableproperties are lost upon water removal. Indeed, once dried, nanocellulose irreversibly assembles into a plastic-like material. Currently it can betoo expensive to transport the aqueous suspensions. In order to mitigate high transportation costs, a methodmust be developed to dry and rehydrate nanocellulose whilst maintaining its nano-morphology. The current work demonstrates that the introduction of a cationic surfactant into the aqueous nanocellulose suspensionyields a chemical …
Reduction Of Ketoximes To Amines By Catalytic Transfer Hydrogenation Using Raney Nickel And 2-Propanol As Hydrogen Donor, Katherynne E. Taylor
Reduction Of Ketoximes To Amines By Catalytic Transfer Hydrogenation Using Raney Nickel And 2-Propanol As Hydrogen Donor, Katherynne E. Taylor
Honors Theses
Ketoximes successfully underwent hydrogenolysis and hydrogenation under catalytic transfer conditions with Raney Nickel and 2-propanol as a hydrogen donor. Ketoximes were reduced to primary amines when 2% KOH was included in the reaction. In the absence of KOH N-isopropyl-secondary-amines were obtained in good yields.
A Psa Process For An Oxygen Concentrator, Aaron A. Moran
A Psa Process For An Oxygen Concentrator, Aaron A. Moran
ETD Archive
Oxygen is used in a variety of chemical processes and for medical purposes throughout the world. Pressure swing adsorption (PSA) has become a viable alternative to cryogenic distillation for the separation of oxygen from air with the development of advanced adsorbents like zeolites. PSA processes are inherently complex because it is a dynamic process. Efficient operation of a PSA process is necessary in order to utilize the capacity of the adsorbent as much as possible and reduce the power requirements of the process.In this thesis, a novel zeolite adsorbent was utilized in a PSA process for oxygen generation with the …