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  • Molecular origins of peptide entrapment in polyethylene oxide layers

    Creator:
    Wu, Xiangming
    Abstract:
    A more quantitative understanding of peptide entrapment and elution from otherwise protein-repellent polyethylene oxide (PEO) brush layers will provide direction for development of new strategies for drug storage and delivery. Here we describe criteria for peptide integration and structural change within the PEO brush, and discuss the reversibility of peptide...
    Resource Type:
    Dissertation
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    peptide S-WLBU2, and the non-amphiphilic homopolymer poly-L-arginine (PLR). Circular dichroism (CD) was

  • Behavior of cellular bulkheads in deep sands

    Creator:
    Maitland, James Keith
    Abstract:
    Large-scale experiments on circular model cell bulkheads were conducted to define the distribution of hoop stresses, deflections of the cells, distortion of the cell fill, ultimate overturning resistance, and the critical mode of failure. The embedment depth of the model cells was varied to investigate the effect of embedment on...
    Resource Type:
    Dissertation
    Full Text:
    experiments on circular model cell bulkheads were conducted to define the distribution of hoop stresses

  • Bacterial pathogens and associated toxins involved in erythrophore cell aggregation

    Creator:
    Hutchison, Janine R.
    Abstract:
    Current detection methods for bacterial contamination rely on structure based detection of proteins and nucleic acids. While these methods are easy to use and reliable, they cannot evaluate the toxicity of a sample and the potential to cause disease. Previously, erythrophore cells derived from Betta splendens had been suggested as...
    Resource Type:
    Dissertation
    Full Text:
    single amino acid conversion of alanine to threonine at residue 289 of L2 toxin component of HBL. This

  • Evaluation of Driver Behavior during Right Turn Maneuvers at Signalized Intersections: Mitigation of Driver-Pedestrian Conflicts with a Right Turn Flashing Yellow Arrow

    Creator:
    Jashami, Hisham
    Abstract:
    Accommodating motor vehicles that are turning (left or right) at signalized intersections requires a careful understanding of the safety and efficiency of design and operational variables. Turning vehicles are the primary collision risk for non-motorized road users at signalized intersections. When turning movements need to be controlled, proper driver response...
    Resource Type:
    Dissertation
    Full Text:
    drivers were presented with a steady red arrow display as compared to a steady circular red display

  • Binding of bacterial lipopolysaccharide by the cationic amphiphilic peptide WLBU2 at interfaces

    Creator:
    Ryder, Matthew P.
    Abstract:
    Passage of blood through a sorbent device for removal of bacteria and endotoxin by specific binding with immobilized, membrane-active, bactericidal peptides holds promise for treating severe blood infections. Peptide insertion in the target membrane and stable binding is desirable, while membrane disruption and release of degradation products to the circulating...
    Resource Type:
    Dissertation
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    PmB. Circular dichroism spectra confirmed that WLBU2, which shows disordered structure in aqueous

  • Heat transfer in magnetic fluids at low Reynolds number

    Creator:
    Choi, Sang Hyouk
    Abstract:
    This study was concerned with the flow of a magnetic self-propelled ferrohydrodynamic fluid in a horizontal circular tube subjected to axially varying temperature and magnetic field. The first phase of the study involved the analytical solution to the governing equations for the velocity and temperature profiles within the fully developed...
    Resource Type:
    Dissertation
    Full Text:
    magnetic self- propelled ferrohydrodynamic fluid in a horizontal circular tube sub- jected to axially

  • Natural products from tropical and temperate marine algae

    Creator:
    Bernart, Matthew W.
    Abstract:
    Following surveys of seaweeds in Oregon and the Caribbean, four algal species were selected for study on the basis of their crude extract biological activity or thin-layer chromatographic characteristics. Extracts were fractionated by normal phase chromatography, including high performance liquid chromatography (HPLC). Derivatives (methyl esters, acetates, and benzoates) of natural...
    Resource Type:
    Dissertation
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    rotations, mass spectra, and circular dichroic spectroscopy were also employed. The Puerto Rican red alga

  • Pool absorption of gas entrained by a plunging liquid jet

    Creator:
    Hauxwell, Gerald Dean
    Abstract:
    A mathematical model was developed to predict the absorption rate of a slightly soluble gas entrained by a plunging liquid jet. The single parameter of the model, the transfer factor, TF, was defined as the summation of the product of the mass transfer coefficient and interfacial area over all the...
    Resource Type:
    Dissertation
    Full Text:
    pool of water. Circular, coherent jet streams varying from 1.4 to 6. 8 mm OD at flow rates equivalent

  • Antimicrobial resistance and plasmid properties of Leuconostoc and group N Streptococcus

    Creator:
    Orberg, Paulo K.
    Abstract:
    A method for rapid isolation of plasmid DNA from group N streptococci was developed. Chief advantages of the method were simplicity, the utilization of microliter quantities of reagents, and the obtainment of preparations highly enriched for covalently closed circular plasmid DNA. The method was also applied to over 15 Leuconostoc...
    Resource Type:
    Dissertation
    Full Text:
    , and the obtainment of preparations highly enriched for covalently closed circular plasmid DNA. The

  • Nisin adsorption and function at hydrophobic surfaces coated with the poly[ethylene oxide]-poly[propylene oxide]-poly[ethylene oxide] triblock surfactant Pluronic® F108

    Creator:
    Tai, Yuan-Ching
    Abstract:
    The adsorption and elution of the antimicrobial peptide nisin at hydrophobic, silanized silica surfaces coated with the poly[ethylene oxide]-poly[propylene oxide]- poly[ethylene oxide] surfactant Pluronic® F108 was measured in situ, with ellipsometry. While such layers are known to inhibit protein adsorption, nisin was observed to adsorb in multilayer quantities, to an...
    Resource Type:
    Dissertation
    Full Text:
    - coated substrates was most pronounced in the presence of blood proteins. Circular dichroism