Index Catalog // ScholarsArchive@OSU

Extensional characterization of weakly-viscoelastic fluids : methods & applications

Creator:: Marshall, Kristin A.
Abstract:: The addition of macromolecules to solvent, even in dilute quantities, can significantly alter a fluid's response in an extensional, or stretching, flow. When high-molecular-weight polymers are extended in solution, extensional thickening can result, yielding viscosities that are orders of magnitude larger than values found in shear. Examples of applications where...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Kristin A. Marshall for the

Design of a microstructured liquid-liquid separator utilizing a capillary pressure gradient

Creator:: Zoebelein, Conor M.
Abstract:: Continuous liquid-liquid two-phase separation is needed in microfluidic devices. Due to the small characteristic lengths of microreactors, phenomena such as mass transport via molecular diffusion occur within seconds. Typically, discrete slugs of an extract are created within microchannels for high specific interfacial area to achieve intensified mass transfer. A challenge...
Resource Type:: Masters Thesis
Full Text:: Conor M. Zoebelein for the degree of Master of Science in Environmental Engineering presented on March

Production of C4-C10 Hydrocarbons from CO₂, H₂O, CO, H₂ and CH₄ Utilizing DC Glow Discharges, Catalytic Rapid Temperature Pulsing in Micro-Scale Reactors.

Creator:: Mohamed, Omar M.
Abstract:: This thesis experimentally determines the feasibility to creating C4 to C10 hydrocarbons from CO2, CO, H2, H2O and CH4. This is done in two steps, the initial step is the formation of ethylene through DC electrical glow discharge at ambient pressure while the second step is through temperature pulse controlled...
Resource Type:: Dissertation
Full Text:: this work – Kristin Rorrer, Charlotte Williams, Lea Clayton, Jordan Jones, and Amy Thompson. Elisha

Development of Rapid Diagnostic Tools for Personal Health Monitors in the Context of Therapy Monitoring

Creator:: Wentland, Lael T.
Abstract:: Personal health monitoring tools, a subset of point-of care-diagnostics, enable more frequent testing of chronic health conditions outside of a clinic setting and can inform personalized therapy or support telehealth diagnostic capabilities. While there is evidence that regular monitoring of chronic conditions can lead to better health outcomes and lower...
Resource Type:: Dissertation
Full Text:: “traditional microfluidics”, are the manipulation of fluid in channels ranging from 1 to 1000 μm in width or

Intensification of Solvent Extraction in an Additively Manufactured Microfluidic Separator

Creator:: Touma, Jad George, Coblyn, Matthew, Freiberg, Lucas Joseph, Kowall, Cliff, Zoebelein, Avaline, and Jovanovic, Goran Nadezda
Abstract:: Solvent extraction is an integral chemical and biochemical separation process that is drastically intensified in microfluidic systems. A novel high-throughput micro-separator was additively manufactured for the intensification of liquid–liquid separation. The micro-posts array within the flow plate generated a capillary pressure gradient on the non-wetting organic phase, enabling continuous, membrane-free,...
Resource Type:: Article
Full Text:: 10.9 mN/m, and aque- ous:organic inlet flow ratios of 1:1 and 2:1. Separation performance deteriorated

Analytical determination of copper speciation in Oregon highway runoff

Creator:: Sprick, Matthew S.
Abstract:: Low concentrations of dissolved copper have been shown to adversely affect the olfactory system of endangered salmonids, impairing their ability to avoid predators and likely increasing predation. It is believed that only the free ionic (Cu2+ free) and weakly complexed forms are bioavailable to organisms; these forms typically account for...
Resource Type:: Masters Thesis
Full Text:: monitored sites ranges from 10−13.49 to 10−6.74 M. Additionally, free copper concentrations are best

Study of graphite-polyurethane composite thin film electrodes for their use in electrochemical antifouling systems

Creator:: Delaney, Matthew A.
Abstract:: Prevention of marine biofouling is vital to the survivability and performance of ships, buoys, and wave energy devices. Coatings that contain metal biocides are currently used to prevent marine biofouling. These coatings have a limited lifetime and are under environmental scrutiny. As a result, it is necessary to research and...
Resource Type:: Masters Thesis
Full Text:: Science Center (Dr. Sarah Henkel, Kristin Politano, and Randy Walker) was extremely helpful in setting

Development of a Paper-Based Whole Blood Phenylalanine Assay for PKU Diagnosis and Monitoring in Low Resource Settings

Creator:: Robinson, Robert Tyler
Abstract:: Phenylketonuria (PKU) is a genetic inborn metabolic disorder which inhibits the functional production of the enzyme phenylalanine hydroxylase (PAH). It currently affects one in 15,000 Americans and is the most common amino acid metabolism error found in newborns. Individuals affected with PKU are incapable of metabolizing the amino acid, phenylalanine...
Resource Type:: Masters Thesis

Aging and performance evaluation of marine antifouling coatings

Creator:: Bunn, Malachi D.
Abstract:: Marine biofouling is a major problem in many industries. Shipping has been afflicted with reduced vessel speed and hindered maneuverability due to organisms attaching since the dawn of sailing. To date, the primary method developed to prevent fouling is the application of biocide laden coatings with various release mechanisms. Mass...
Resource Type:: Dissertation

Solution-based deposition of functional thin films : development of a glucose biosensor and thermal processing of CZTS nanoparticle films

Creator:: Durgan, Christopher J.
Abstract:: The development of solution-based methods for deposition of different thin film material is presented as an alternative to high cost vacuum-based methods. For certain materials, vacuum techniques are unsuitable for processing. Additionally, vacuum-based processes present high capital costs associated with equipment, and slow processing times. Atmospheric pressure solution based techniques...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Extensional characterization of weakly-viscoelastic fluids : methods & applications

Design of a microstructured liquid-liquid separator utilizing a capillary pressure gradient

Production of C4-C10 Hydrocarbons from CO₂, H₂O, CO, H₂ and CH₄ Utilizing DC Glow Discharges, Catalytic Rapid Temperature Pulsing in Micro-Scale Reactors.

Development of Rapid Diagnostic Tools for Personal Health Monitors in the Context of Therapy Monitoring

Intensification of Solvent Extraction in an Additively Manufactured Microfluidic Separator

Analytical determination of copper speciation in Oregon highway runoff

Study of graphite-polyurethane composite thin film electrodes for their use in electrochemical antifouling systems

Development of a Paper-Based Whole Blood Phenylalanine Assay for PKU Diagnosis and Monitoring in Low Resource Settings

Aging and performance evaluation of marine antifouling coatings

Solution-based deposition of functional thin films : development of a glucose biosensor and thermal processing of CZTS nanoparticle films

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