Index Catalog // ScholarsArchive@OSU

Urban natural parks in Portland : nature, networks, and community health

Creator:: Baur, Joshua W. R.
Abstract:: Three trends are occurring today in the United States which inspired this research. First, America is growing increasingly urbanized. Today, more Americans are living in cities than in rural environments, and this pattern is predicted to continue for the foreseeable future. Urban living has benefits, but there are also challenges...
Resource Type:: Dissertation
Full Text:: authorizes release of my dissertation to any reader upon request. Joshua W. R

Development of a Boiling Surface Effectiveness Parameter by Modeling and Quantifying the Net Coolant Flow Rate

Creator:: Harrison, Matt
Abstract:: Boiling dynamics and related heat transfer mechanisms have been widely studied for several decades. During that time, incredible progress has been made on quantifying bubble departure phenomena including growth rate, departure frequency, associated natural and forced convection, and radiation additions to the overall heat transfer rate. With this, the thermal...
Resource Type:: Dissertation
Full Text:: similar to that of a fin Joshua L. Gess effectiveness parameter as this quantifies the utility

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Creator:: Cox, Bryce
Abstract:: Laser Powder Bed Fusion (LPBF) is a process commonly used to create additively manufactured metal parts. The flexibility and complexity allowed by the LPBF process provides opportunity for significant advancement in multiple industries as parts can be customized in shape and function for specific needs. These benefits can be compounded...
Resource Type:: Dissertation
Full Text:: . Abstract approved: ______________________________________________________ Joshua L. Gess Laser

Biophysical properties of the turnip yellow mosaic virus explored by coat protein mutagenesis

Creator:: Powell, Joshua D.
Abstract:: Plant viruses have been instrumental in our understanding of the biophysical properties pertaining to non-enveloped icosahedral virus particles. A substantial amount of research has been performed over five decades on Turnip yellow mosaic virus (TYMV), arguably one of the most extensively studied icosahedral plant viruses and the type-member of the...
Resource Type:: Dissertation
Full Text:: 2 AN ABSTRACT OF THE DISSERTATION OF Joshua D. Powell for the degree of Doctor of

Phylogeny of the "Chaoboriform" genera

Creator:: Ogawa, Joshua R.
Abstract:: The phantom midges (Diptera: Chaoboridae) are a relatively small fly family composed of 50 extant species in six genera. Larvae are of interest to limnologists and ecologists because of their tolerance to toxicants, predatory avoidance strategies, and the role chaoborids play in zooplankton community dynamics. Relative to mosquitoes, systematists have...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Joshua R. Ogawa for the degree of Doctor of Philosophy in Zoology presented on June

Advancements in Phytoremediation, Dosimetry, and Environmental Radiological Protection: Integrating Endemic Plants, Anatomically Accurate Phantoms, and Real-world Data for Improved Assessments

Creator:: Hargraves, Joshua T.
Abstract:: The environmental impact of the nuclear industry has prompted the need for innovative remediation strategies and accurate radiological assessments. This paper synthesizes three studies that collectively explore the potential of endemic plant species for phytoremediation, the development of anatomically accurate phantoms for precise dosimetry calculations, and the critical evaluation of...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Joshua

Evidence of a trophic cascade among wolves, elk, and aspen in Yellowstone National Park, USA

Creator:: Halofsky, Joshua S.
Abstract:: According to general top-down trophic theory, in the presence of carnivores, herbivore behavior and/or densities could change and result in an overall decrease in herbivory on plant communities. In this dissertation, I examined the potential relationship between gray wolf (Canis lupus) presence and absence on elk (Cervus elaphus) herbivory of...
Resource Type:: Dissertation
Full Text:: Joshua S. Halofsky for the degree of Doctor of Philosophy in Forest Resources presented on April 19

Total synthesis of (-)-7-epicylindrospermopsin

Creator:: Hansen, Joshua D.
Abstract:: The first asymmetric synthesis of (-)-7-epicylindrospermopsin via intramolecular nitrone cycloaddition is described. The synthesis utilized a convergent approach to prepare the cycloaddition precursor 176, which was assembled by condensation of hydroxylamine 175 with aldehyde 145. Hydroxylamine 175 was synthesized from ethylene glycol (166) in seven steps. Aldehyde 145 was completed...
Resource Type:: Dissertation
Full Text:: OF THE DISSERTATION OF Joshua D. Hansen for the degree of Doctor of Philosophy in Chemistry

An Interdisciplinary approach towards understanding late Pleistocene ice sheet change

Creator:: Cuzzone, Joshua K.
Abstract:: The results presented in this dissertation address a number of questions regarding late Pleistocene and Holocene ice-sheet and climate interactions, spanning disciplines involving paleoclimatology and atmospheric science. These studies use various techniques in geochemistry, climate modeling, and ice-sheet modeling to address ice- sheet response to climate and the attendant interactions...
Resource Type:: Dissertation
Full Text:: Josh_Thesis.pdf AN ABSTRACT OF THE DISSERTATION OF Joshua K

Analysis of secondary structures in nucleic acid binding proteins and nuclear magnetic resonance investigation of helix propagation and residual motions in proteins

Creator:: Hicks, Joshua M.
Abstract:: This thesis involves analyses of 3₂-helices, a-helices and of the change in residual entropy of a protein upon chemical modification. Part of the long-term goal of understanding the formation, function and stability of proteins requires that all conformations be accurately assigned and structurally understood. By a statistical analysis of 258...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Joshua M. Hicks for the

ScholarsArchive@OSU

Urban natural parks in Portland : nature, networks, and community health

Development of a Boiling Surface Effectiveness Parameter by Modeling and Quantifying the Net Coolant Flow Rate

Tracking of Melt Pool Motion Using Numerical Analysis of Laser Powder Bed Fusion

Biophysical properties of the turnip yellow mosaic virus explored by coat protein mutagenesis

Phylogeny of the "Chaoboriform" genera

Advancements in Phytoremediation, Dosimetry, and Environmental Radiological Protection: Integrating Endemic Plants, Anatomically Accurate Phantoms, and Real-world Data for Improved Assessments

Evidence of a trophic cascade among wolves, elk, and aspen in Yellowstone National Park, USA

Total synthesis of (-)-7-epicylindrospermopsin

An Interdisciplinary approach towards understanding late Pleistocene ice sheet change

Analysis of secondary structures in nucleic acid binding proteins and nuclear magnetic resonance investigation of helix propagation and residual motions in proteins

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