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Filtering by: Creator Ostermann, Stacey D. Remove constraint Creator: Ostermann, Stacey D. Academic Affiliation Chemical, Biological and Environmental Engineering Remove constraint Academic Affiliation: Chemical, Biological and Environmental Engineering Language English [eng] Remove constraint Language: English [eng]

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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:

rubber on zebrafish. Abstract approved: Stacey Harper Plastics have become an essential
Novel Approaches to Evaluate the Environmental Impacts of Nanomaterials

Creator:

Wu, Fan

Abstract:

Numerous studies have shown that some nanomaterials are highly toxic to aquatic organisms and can potentially disrupt overall community health; however, current methods to evaluate the nanomaterials environmental impacts rarely consider the environmental realism or provide sufficient detail on the impact at the community level. Here we demonstrate three approaches...

Resource Type:

Dissertation

Full Text:

Abstract approved: ____________________________________________ Stacey L. Harper Numerous
An in silico Approach to Determine the Influence of Surface Chemical Properties on the Toxicity of Engineered Zinc Oxide Nanoparticles

Creator:

Zhou, Zitao

Abstract:

Nanotechnology products have long since made their way to markets around the world increasing the concerns about whether nanomaterials pose a risk to our environment or health. It has been suggested that engineered nanomaterial (ENM) with broad applications and rapid commercialization need better risk assessment and regulation. However, the refinement...

Resource Type:

Masters Thesis

Full Text:

Toxicity of Engineered Zinc Oxide Nanoparticles. Abstract approved: Stacey L. Harper Nanotechnology
Addressing the Risks of Nanoscale Polymers: Exposure, Behavior, and Toxicity

Creator:

Stine, Jared

Abstract:

Nanoscale polymers (including nanoplastics) are widely present through commerce and make their way into the environment. As the improper disposal of plastic waste leads to continued accumulation and degradation of plastic pollution, the presence of plastic particles less than 1 micron (μm) in size (nanoplastics) will increase. Heightened concern over...

Resource Type:

Dissertation

Full Text:

approved: ______________________________________________________ Stacey L. Harper Nanoscale
Addressing Persistent Challenges in Nanotoxicology Exposures : Techniques for in situ Characterization

Creator:

Crandon, Lauren E.

Abstract:

Nanoparticles (NPs), defined by their size (1-100 nm), are increasingly incorporated into commercial and industrial products due to their high surface area and unique properties. They can be designed for specific applications by manipulating composition, size, shape, and surface functionalization. As NP production and complexity increases, there is a need...

Resource Type:

Dissertation

Full Text:

Abstract approved: Stacey L. Harper Nanoparticles (NPs), defined by their size (1-100 nm), are
Method development for characterizing the hydrophobicity of engineered nanoparticles

Creator:

Lee, Fang Yu

Abstract:

Characterizing the hydrophobicity of nanoparticles can help us understand their fate and transport in the environment, as well as how nanoparticles may interact with biological systems. However, contact angle and partition coefficient have limitations in measuring the hydrophobicity of nanoparticles, thus promising methods to measuring the hydrophobicity of nanoparticles are...

Resource Type:

Masters Thesis

Full Text:

Stacey L. Harper Characterizing the hydrophobicity of nanoparticles can help us understand their
Studies on effect of stabilizers, chelators and inherent periodicity on nanoparticle antioxidant activity

Creator:

Zhou, Zheng

Abstract:

The level of reactive oxygen species (ROS) is tightly regulated in biological systems as overproduction can lead to oxidative stress and result in a number of diseases. Due to its negative effects, antioxidants are studied and used against ROS in medicine, pharmaceuticals and therapeutics. Because of issues with the uptake...

Resource Type:

Masters Thesis

Full Text:

Abstract approved: ______________________________________________________ Stacey L. Harper The
Development of traceable metal oxide nanoparticles for examining environmental fate and transport

Creator:

Rowbotham, Brian

Abstract:

The fate and transport of engineered nanoparticles (ENPs) such as titanium dioxide (TiO₂) are of concern due to their increasing use in consumer products. Although analytical methods for detection and quantification of ENPs in environmental matrices are being developed, these methods are difficult, time consuming, and not easily validated for...

Resource Type:

Masters Thesis

Full Text:

treatment, an d the ability of labeled particles to be detected against background titanium concentrations
The effects of engineered coatings and natural organic matter on nanoparticle aggregation

Creator:

McDowell, Shannon A.

Abstract:

In order to better predict the aggregation state of nanomaterials, the factors that influence aggregation must be understood. The combined effects of natural and engineered coatings have been shown to factor into nanoparticle aggregation behavior in preliminary research. In this study, aggregation behaviors of gold nanoparticles with two different engineered...

Resource Type:

Masters Thesis

Full Text:

. Aggregation of cit-AuNPs in the presence of NOM isolates and KCl. (a-d) TR-DLS profiles of cit-AuNPs in 1
Development and applications of a high-throughput activity assay, using the ammonia-oxidizing bacteria Nitrosomonas europaea

Creator:

Bartow, Shannon M.

Abstract:

The rising demand on freshwater resources emphasizes the benefit of biogeochemical processes that maintain clean water by removing pollutants such as excess nitrogen. The most sensitive step in the removal of nitrogen from waterways is the oxidation of ammonia, a part of nitrification, which is carried out by ammonia oxidizing...

Resource Type:

Masters Thesis

Full Text:

nitrogen under section 303(d) of the Clean Water Act (EPA 1993). Jurisdictions with waters that exceed

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Academic Affiliation

Chemical, Biological and Environmental Engineering[remove]26

Advisor

Harper, Stacey L.6
Nason, Jeffrey A.5
Semprini, Lewis4
Baio, Joe E.2
Nason, Jeffrey2
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2011 to 2024

View distribution

Unknown 1

Committee Member

Harper, Stacey8
Radniecki, Tyler7
Higgins, Adam5
Semprini, Lewis4
Nason, Jeffrey A.3
more Committee Members »

Creator

Mottern, Taylor H.2
Barker, Leila Kelly1
Bartow, Shannon M.1
Crandon, Lauren E.1
Deline, Alyssa R.1
more Creators »

Contributor

Cunningham, Brittany2
Stine, Jared2
Angstrom, Arek M.1
Baio, Joe E.1
Chang, Chih Hung1
more Contributors »

Date

Date range begin – Date range end

Current results range from 2010 to 2023

View distribution

Decade

2020-20299
2010-201917

Degree Field

Environmental Engineering14
Chemical Engineering9
Bioengineering3

Degree Level

Master's13
Doctoral11
Bachelor's2

Degree Name

Master of Science (M.S.)13
Doctor of Philosophy (Ph.D.)11
Honors Bachelor of Science (H.B.S.)2

Language

English [eng][remove]26

License

All rights reserved25

Non-Academic Affiliation

Oregon State University. Graduate School12
Oregon State University. Honors College2

Peer Reviewed

No26

Resource Type

Masters Thesis13
Dissertation11
Honors College Thesis1
Poster1

Rights Statement

In Copyright25
In Copyright - Non-Commercial Use Permitted1

Subject

Nanoparticles4
Nanoparticles -- Environmental aspects4
Aggregation (Chemistry)2
Microplastics2
Nanoparticles -- Toxicology2
more Subjects »

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