Index Catalog // ScholarsArchive@OSU

Atypical presentation of pseudomembranous colitis localized in adenomatous polyps

Creator:: Hernández-Rocha, Cristian, Barra-Carrasco, Jonathan, Guzmán, Ana María, Paredes-Sabja, Daniel, Lezcano, Gabriel, Zoroquiaín, Pablo, and Álvarez-Lobos, Manuel
Abstract:: The most frequent cause of pseudomembranous colitis is Clostridium difficile (C. difficile) infection. This type of colitis is characterized by an endoscopic pattern of numerous small, yellowish or whitish plaques diffusely distributed, which typically compromises the rectum extending to proximal colon. Occasionally, the pseudomembranes compromise only the transverse or right...
Resource Type:: Article
Full Text:: Cristian Hernández-Rocha, Jonathan Barra-Carrasco, Ana María

Epidemic Clostridium difficile Ribotype 027 in Chile

Creator:: Hernandez-Rocha, Cristian, Barra-Carrasco, Jonathan, Pizarro-Guajardo, Marjorie, Ibanez, Patricio, Bueno, Susan M., Sarker, Mahfuzur R., Maria Guzman, Ana, Alvarez-Lobos, Manuel, and Paredes-Sabja, Daniel
Abstract:: The increased severity of Clostridium difficile infection is primarily attributed to the appearance of an epidemic strain characterized as PCR ribotype 027. The only report that identified epidemic C. difficile ribotype 027 in an American country outside of North America comes from Costa Rica, raising the possibility that strains 027...
Resource Type:: Article
Full Text:: Hernández-Rocha,1 Jonathan Barra-Carrasco,1 Marjorie Pizarro-Guajardo, Patricio Ibáñez, Susan M. Bueno

The Clostridium difficile Exosporium Cysteine (CdeC)-Rich Protein Is Required for Exosporium Morphogenesis and Coat Assembly

Creator:: Barra-Carrasco, Jonathan, Olguín-Araneda, Valeria, Plaza-Garrido, Ángela, Miranda-Cárdenas, Camila, Cofré-Araneda, Glenda, Pizarro-Guajardo, Marjorie, Sarker, Mahfuzur R., and Paredes-Sabja, Daniel
Abstract:: Clostridium difficile is an important nosocomial pathogen that has become a major cause of antibiotic-associated diarrhea. There is a general consensus that C. difficile spores play an important role in C. difficile pathogenesis, contributing to infection, persistence, and transmission. Evidence has demonstrated that C. difficile spores have an outermost layer,...
Resource Type:: Article
Full Text:: Protein Is Required for Exosporium Morphogenesis and Coat Assembly Jonathan Barra-Carrasco,a Valeria

First principles studies of optical, electronic and mechanical properties of organic molecules and solids

Creator:: Barras, Faye Lyn
Abstract:: This thesis presents the results of quantum-mechanical first principles calculations of optical, electronic and mechanical properties of organic molecules and solids, which have diverse potential applications such as photovoltaics, flexible electronics, and mechanical catalysts with applications in force sensors and self-healing materials. The electronic and optoelectronic properties of organic thin...
Resource Type:: Dissertation

Water scarcity and reservoir reliability in basins affected by climate and land use change : impacts of hydrogeology, sensitivities, and uncertainties in the Santiam River Basin, Oregon

Creator:: Mateus, M. Cristina
Abstract:: Multipurpose management of hydrosystems face a number of uncertainties related to hydrologic variability and nonstationarity. Anticipated air temperature increases in the Pacific Northwest region are projected to alter the timing and quantity of streamflow associated with precipitation shifting from snow to rain, including shorter winter runoff periods, earlier spring runoff,...
Resource Type:: Dissertation
Full Text:: , thoughtful ideas, and contributions to my success. I thank my graduate council representative, Dr. Jonathan

Distinguishing Risk and Protective Factors for Suicidal Ideation and Attempt Among Gender Diverse and Cisgender Youth: Findings from a State Survey

Creator:: Zell, Holly
Abstract:: Suicide is a leading cause of death amongst adolescents, and transgender and gender diverse youth are at especially high risk for suicidal ideation and attempt compared with cisgender peers. Using established ideation-to-action models of suicide and the Minority Stress Model, this project used the 2019 results of the Oregon Healthy...
Resource Type:: Masters Thesis
Full Text:: , Jessica Dietch, and Jonathan Garcia for their meaningful feedback and support throughout my projects and

Forest Fire Impacts on Carbon Uptake, Storage, and Emission: The Role of Burn Severity in the Eastern Cascades, Oregon

Creator:: Meigs, Garrett W., Donato, Daniel C., Campbell, John L., Martin, Jonathan G., and Law, Beverly E.
Abstract:: This study quantifies the short-term effects of low-, moderate-, and high-severity fire on carbon pools and fluxes in the Eastern Cascades of Oregon. We surveyed 64 forest stands across four fires that burned 41,000 ha (35%) of the Metolius Watershed in 2002 and 2003, stratifying the landscape by burn severity...
Resource Type:: Article
Full Text:: L. Campbell,1 Jonathan G. Martin,1 and Beverly E. Law1 1Department of Forest Ecosystems and Society

An atom probe perspective on phase separation and precipitation in duplex stainless steels

Creator:: Guo, Wei, Garfinkel, David A., Tucker, Julie D., Haley, Daniel, Young, George A., and Poplawsky, Jonathan D.
Abstract:: Three-dimensional chemical imaging of Fe–Cr alloys showing Fe-rich (α)/Cr-rich (α') phase separation is reported using atom probe tomography techniques. The extent of phase separation, i.e., amplitude and wavelength, has been quantitatively assessed using the Langer-Bar-on-Miller, proximity histogram, and autocorrelation function methods for two separate Fe–Cr alloys, designated 2101 and 2205....
Resource Type:: Article
Full Text:: , Daniel Haley3, George A Young4 and Jonathan D Poplawsky1 1Center for Nanophase Materials Sciences, Oak

Advancing Spatial Data Engineering and Analysis: Integrative Approaches with GIS, Statistical Modelling, and Deep Learning

Creator:: Krivova, Maria
Abstract:: Geospatial data analysis is a multifaceted discipline encompassing the collection, processing, and visualization of diverse datasets. It models and delineates the interactions of people, objects, and phenomena within geographical spaces and predicts patterns based on the relationships between different locations. Despite significant advancements in geospatial data engineering and analytics over...
Resource Type:: Dissertation
Full Text:: . Michael Olsen, with co-authorship contributions from Jonathan Allan, Christopher Parrish, Ben

The first molecular phylogeny of Chilodontidae (Teleostei: Ostariophysi: Characiformes) reveals cryptic biodiversity and taxonomic uncertainty

Creator:: Melo, B. F., Sidlauskas, B. L., Hoekzema, K., Vari, R. P., and Oliveira, C.
Abstract:: Chilodontidae is a small family of eight described characiform species popularly known as headstanders. These small to moderately sized fishes are well known to aquarists, who prize their striking spotted pigmentation and unusual behaviors, and to systematists, who have revised both chilodontid genera in recent memory and studied their phylogenetic...
Resource Type:: Article
Full Text:: Perez (ANSP), 480 Nathan K. Lujan and Jonathan W. Armbruster (AUM), Raphael Covain (MHNG), 481

ScholarsArchive@OSU

Atypical presentation of pseudomembranous colitis localized in adenomatous polyps

Epidemic Clostridium difficile Ribotype 027 in Chile

The Clostridium difficile Exosporium Cysteine (CdeC)-Rich Protein Is Required for Exosporium Morphogenesis and Coat Assembly

First principles studies of optical, electronic and mechanical properties of organic molecules and solids

Water scarcity and reservoir reliability in basins affected by climate and land use change : impacts of hydrogeology, sensitivities, and uncertainties in the Santiam River Basin, Oregon

Distinguishing Risk and Protective Factors for Suicidal Ideation and Attempt Among Gender Diverse and Cisgender Youth: Findings from a State Survey

Forest Fire Impacts on Carbon Uptake, Storage, and Emission: The Role of Burn Severity in the Eastern Cascades, Oregon

An atom probe perspective on phase separation and precipitation in duplex stainless steels

Advancing Spatial Data Engineering and Analysis: Integrative Approaches with GIS, Statistical Modelling, and Deep Learning

The first molecular phylogeny of Chilodontidae (Teleostei: Ostariophysi: Characiformes) reveals cryptic biodiversity and taxonomic uncertainty

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