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Filtering by: Creator Muehlbauer, Jeffrey D. Remove constraint Creator: Muehlbauer, Jeffrey D. Advisor Harper, Stacey L. Remove constraint Advisor: Harper, Stacey L.

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  • Size and surface area dependent toxicity of silver nanoparticles in zebrafish embryos (Danio rerio)

    Creator:
    Tuttle, George R.
    Abstract:
    Many studies addressing the toxicity of silver nanomaterials have found that smaller sized silver nanoparticles are usually more toxic to organisms and in cell culture than particles of larger sizes yet it is not entirely clear why. We investigated the size dependent toxicity of silver nanoparticles by measuring the response...
    Resource Type:
    Masters Thesis
    Full Text:
    for surface area, 4*π*1/2d2 where d is the mean primary particle diameter measured by TEM, and [4

  • 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:
    members, Dr. Tyler Radniecki, Dr. Jeffrey Nason, Dr. Lewis Semprini, and Dr. Perry Hystad, I cannot

  • 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:
    . Paul D. Nguyen contributed to the design of experiments, data collection, and data analysis of

  • 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:
    dissertation possible. Thank you so much to my committee members Dr. Jeffrey Nason, Dr. Tyler Radniecki, Dr

  • A Review and Toxicological Evaluation of an Environmentally-Friendly Alternative to Silver Nanoparticles

    Creator:
    Nix, Cassandra E.
    Abstract:
    Within the past two decades, the rise of nanotechnology has provided various technological and industrial sectors with avenues for significant growth and improvements to existing practices. With the inherent qualities which make materials on the nanoscale unique in behavior and function, there are limitless applications of nanotechnology. One of the...
    Resource Type:
    Masters Thesis

  • The Stability, Toxicity, and Reactivity of Zero Valent Iron Nanoparticles

    Creator:
    Bulovsky, Hannah G.
    Abstract:
    Zero valent iron nanoparticles effectively remediate groundwater contaminants due to their catalytic properties and enhanced surface area. However, these properties contribute to particle agglomeration, decreasing their effectiveness. In this study, we examined the effect of two stabilizing agents (gum arabic (GA) and sodium carboxymethyl cellulose (CMC)) on particle stability, toxicity,...
    Resource Type:
    Honors College Thesis
    Full Text:
    _____________________________________________________________________ Jeffrey A. Nason, Committee Member, representing Chemical, Biological, and Environmental

  • 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