Index Catalog // ScholarsArchive@OSU

Chronic Toxicological Effects in Daphnia magna from Exposure to PMMA Nanoplastics

Creator:: Brown, Hans
Abstract:: Plastic pollution is an ever-increasing environmental threat. As large-scale plastics break down to form nanoscale plastics, it is essential to investigate their effects on freshwater ecosystems. With many plastic nanoparticle (NP) studies favoring the effects of common polystyrene (PS) plastics, a gap is formed for other common plastic types like...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Bryan Harper, Committee Member, representing the Department of Environmental and Molecular

Environmental Transformations in Hydrophobicity of TiO2 P-25 Nanoparticles in Alsea River Waters

Creator:: Boenisch, Kylie
Abstract:: Hydrophobic titanium dioxide (TiO2) nanoparticles (NPs) are prevalent in industry and manufacturing. They are known for their white pigmentation, are found in sunscreens, paints, cosmetics, and are frequently used in wastewater treatment. Understanding the physicochemical properties of TiO2 P-25 NPs, such as hydrophobicity, are essential when determining their fate, transport,...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Bryan Harper, Committee Member, representing Environmental and Molecular Toxicology

Optimizing Methods to Assess Nanoparticle Biodistribution in Embryonic Zebrafish

Creator:: Pfarr, Shaylin H.
Abstract:: As nanoparticle (NP) research and development expands, the significance of NP biodistribution effects on toxicity increases. A reliable method for measuring NP biodistribution is critical. Hyperspectral Imaging (HSI) is capable of accurately quantitating NP biodistribution within embryonic zebrafish with incredibly high precision. Before HSI processing, the embryo must be sectioned...
Resource Type:: Honors College Thesis
Full Text:: Engineering _____________________________________________________________________ Bryan Harper

Developmental effects of micro- and nanoscale tire particles and recycled rubber on zebrafish

Creator:: Mottern, Taylor H.
Abstract:: Plastics have become an essential part of everyone lives, found in almost every product made today. Tires only make up a fraction of these products but as their use increasing so does the microplastics that flake off. Many studies have evaluated the toxic effects of tire particles on aquatic environments...
Resource Type:: Honors College Thesis
Full Text:: Harper, Mentor, representing Chemical, Biological, and Environmental Engineering Bryan Harper

Environmental Transformations of Nanoparticles in Natural Water Systems using a Hydrophobic and Hydrophilic Dye Assay

Creator:: Turnquist, Macklin C.
Abstract:: Nanoparticles (NPs) are generally defined as particles <100 nanometers (nm) in size in one dimension. Despite increasing industrial usage of TiO2 NPs in sunscreens, cosmetics, and water remediation little is known of their environmental behavior. The primary goal of this research was to develop a rapid method for determining the...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Bryan Harper, Committee Member, representing Department of Environmental and Molecular

Assisted Migration in the Colorado Subalpine Forest

Creator:: Najim, Tara
Abstract:: This capstone study reports on global warming-induced changes to the Colorado subalpine zone climate and disturbance regimes. It assesses the impacts of these changes upon the dominant subalpine tree species and summarizes future species distribution modeling for these and other nearby species potentially suitable for the future subalpine zone in...
Resource Type:: Capstone Project

"Instead of tumbleweed, we have mitigation systems" : an ethnography of toxics risk, mitigation, and advocacy in IBM's deindustrialized birthplace

Creator:: Little, Peter C.
Abstract:: This dissertation draws on ethnographic data and political ecological theory to analyze the experience of residents living in the IBM-Endicott Superfund site in Endicott, New York. Combining in-depth narratives and quantitative measures from a household survey, it highlights residents' perceptions of 1) environmental health risk, 2) risk mitigation, 3) deindustrialization...
Resource Type:: Dissertation
Full Text:: Bryan Tilt This dissertation draws on ethnographic data and political ecological theory to

Assessing Changes in Biological Interactions of Lipid-Coated Gold and Silver Nanoparticles Based on Physicochemical Properties

Creator:: Engstrom, Arek Mackenzie
Abstract:: Nanoparticles (NPs), particles defined by their size in a single dimension (1-100 nm), are being increasingly incorporated into commercial and industrial products due to their high surface area to volume ratio that gives them unique properties, such as optical tunability and higher reactivity than their bulk counterparts. NPs can be...
Resource Type:: Masters Thesis
Full Text:: am today. I would also like to thank Bryan Harper, who provided support to me as a mentor, in

Assessing the toxicity of nanoplastics using the primary human bronchial epithelial model

Creator:: Germano, Francesca
Abstract:: Emerging data showing the presence of atmospheric microplastics (MPs) has recently raised awareness surrounding the potential of human nanoplastics (NPs) exposure. Due to factors such as weathering, UV exposure, and other biodegradation processes, plastic pollution in the environment breaks down over time into micro (<5 micrometers) and nanoscale (<1000nm) particles....
Resource Type:: Masters Thesis
Full Text:: such a positive learning experience for us all. To Jamie Pennington and Bryan Harper, no

Comparative toxicological assessment of PAMAM and thiophosphoryl dendrimers using embryonic zebrafish

Creator:: Pryor, Joseph B., Harper, Bryan J., and Harper, Stacey L.
Abstract:: Dendrimers are well-defined, polymeric nanomaterials currently being investigated for biomedical applications such as medical imaging, gene therapy, and tissue targeted therapy. Initially, higher generation (size) dendrimers were of interest because of their drug carrying capacity. However, increased generation was associated with increased toxicity. The majority of studies exploring dendrimer toxicity...
Resource Type:: Article
Full Text:: PAMAM and thiophosphoryl dendrimers using embryonic zebrafish Pryor, J. B., Harper, B. J., & Harper, S

ScholarsArchive@OSU

Chronic Toxicological Effects in Daphnia magna from Exposure to PMMA Nanoplastics

Environmental Transformations in Hydrophobicity of TiO2 P-25 Nanoparticles in Alsea River Waters

Optimizing Methods to Assess Nanoparticle Biodistribution in Embryonic Zebrafish

Developmental effects of micro- and nanoscale tire particles and recycled rubber on zebrafish

Environmental Transformations of Nanoparticles in Natural Water Systems using a Hydrophobic and Hydrophilic Dye Assay

Assisted Migration in the Colorado Subalpine Forest

"Instead of tumbleweed, we have mitigation systems" : an ethnography of toxics risk, mitigation, and advocacy in IBM's deindustrialized birthplace

Assessing Changes in Biological Interactions of Lipid-Coated Gold and Silver Nanoparticles Based on Physicochemical Properties

Assessing the toxicity of nanoplastics using the primary human bronchial epithelial model

Comparative toxicological assessment of PAMAM and thiophosphoryl dendrimers using embryonic zebrafish

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