Index Catalog // ScholarsArchive@OSU

The Effects of UV Irradiation on the Biosorption of Titanium Dioxide Nanoparticles to Heterotrophic Biomass

Creator:: Young, William M.
Abstract:: The production of titanium dioxide (TiO2) nanoparticles has increased significantly in the past decades, which has generated concern due to their known toxicity in the environment. As a result of the production, use and disposal of productions containing TiO2, TiO2 nanoparticles are often received by wastewater treatment facilities. The adsorption...
Resource Type:: Honors College Thesis
Full Text:: (24.0 µg/L). Exposure to UV irradiation reduced Au@TiO2 nanoparticle hydrophobicity and shifted the

Systematically evaluating the developmental toxicity of nanomaterials using the zebrafish model

Creator:: Edwards, Sabrina R.
Abstract:: As engineered nanomaterials (ENM) become more common in consumer products, it is crucial to rapidly assess toxicity of unique ENM. Previous studies rarely focused on standardizing nanotoxicity testing, leading to inconsistent and irreproducible results. This study characterized a variety of ENM of different size, shape, core type, and surface charge...
Resource Type:: Poster, Undergraduate Thesis, and Presentation
Full Text:: Silver on Silica 4% w/w Composite 25 At 120hpf, hypoactivity persisted with the lowest effect level at

Modeling of Power Efficiency in a Magnetohydrodynamic Generator

Creator:: Redle, Michael T.
Abstract:: The introduction of an Magnetohydrodynamic (MHD) generator in coal or natural gas energy plants could significantly increase the efficiency by converting kinetic and thermal energy of the combustion exhaust to electrical energy by the generation of a Faraday and Hall current. The traditional MHD system was transformed into a simplified...
Resource Type:: Honors College Thesis
Full Text:: : Modeling of Power Efficiency in a Magnetohydrodynamic Generator Abstract approved: Nathan L. Gibson The

Electrical Transport Measurements Show Intrinsic Doping and Hysteresis in Graphene p-n Junction Devices

Creator:: Plunkett, Garrett R.
Abstract:: Understanding the electrical transport properties of graphene provides a basis for determining its future as a potential semiconducting device that can be used for the next generation of transistors and photodetectors. Graphene p-n junctions can also function as field effect transistors, and thus are a logical starting point for I-V...
Resource Type:: Undergraduate Thesis
Full Text:: gate voltage. This is given by 𝜇 = ∆𝐺 ∆𝑉𝑇𝐺 𝐿 𝑊 1 𝐶𝑇𝐺𝑒

Utilization of Robot Ankle Torque to Account for Foot Placement Error

Creator:: Bernards, Mitchell F.
Abstract:: Modern walking robots have shown that dynamic gaits can be achieved without ankle motors. It seems logical that the additional control authority that they provide can be used to improve the stability of the walking gait against foot placement errors caused by low level control. This thesis develops and compares...
Resource Type:: Honors College Thesis
Full Text:: conclusion 24 ii appendix bibliography 27 L I S T O F F I G U R E S Figure 2.1 The spring mass model

Implementation of a comparative method for measuring photoluminescence quantum yield of novel compounds in solution

Creator:: Brandner, Bret
Abstract:: Quantum yield is an important, characteristic quantity to be measured for fluorescent compounds. Here, a comparative method between fluorescent compounds in solution is applied to measure unknown quantum yields. An absorption spectrometer was used to measure the absorbances of two different fluorescent quantum yield standards. The integrated fluorescence intensities were...
Resource Type:: Undergraduate Thesis
Full Text:: Photoluminescence Quantum Yields of Novel Compounds in Solution Bret Brandner Advisor: Dr. Matthew W. Graham

Adapting the Methylene Blue Sulfide Detection Method for Use in a Microfluidic in-situ Monitoring Device

Creator:: Monares, Shane W.
Abstract:: Sulfide is an important species to measure in environmental water samples. The spectrophotometric detection method for reduced sulfur species (sulfide) based on generation of methylene blue was adapted to work in an apparatus utilizing microfluidic PDMS mixing and observation cells with flow channels in the 100 μm range. The benefits...
Resource Type:: Honors College Thesis
Full Text:: . Eaton, A. D.; Clesceri, L. S.; Rice, E. W.; Greenberg, A. E.; American Public Health, Association

Effects of Marijuana on Risky Decision-Making in Young Adult College Students

Creator:: Casey, Jorie L.
Abstract:: Marijuana (MJ) is a widely used illicit substance among adolescents and young adults. Frequent MJ use has been associated with impairments in cognitive flexibility and inhibition, both of which play important roles in decision-making. However, the impact of frequent MJ on decision-making performance is mixed and not well understood. The...
Resource Type:: Honors College Thesis
Full Text:: References Arain, M., Haque, M., Johal, L., Mathur, P., Nel, W., Rais, A., … Sharma, S. (2013). Maturation

Protection of Nitrosomonas europaea from Silver Nanoparticle-Induced Inhibition through a Two-Step, Magnesium-Facilitated Mechanism

Creator:: Anderson, Joseph W.
Abstract:: The inhibitory effects of (Ag⁺) and silver nanoparticles (Ag NP) 3-5 nm in diameter (stabilized with polyvinylpyrrolidone (PVP)) and 20 nm (stabilized with citrate) on nitrification rates of the model ammonia-oxidizing bacteria (AOB) Nitrosomonas europaea were investigated. Experimental solutions contained HEPES buffer and ammonia (NH₃) in the presence and absence...
Resource Type:: Honors College Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Joseph W

Detection and Segmentation of Bird Song in Noisy Environments

Creator:: Neal, Lawrence W.
Abstract:: Recent work in machine learning concerns the detection and identification of bird species from audio recordings of their vocalizations. Such analysis can yield valuable ecological information concerning the activity and distribution of species in the wild. Current species-identification methods require individual syllables of bird audio as input, but field-collected audio...
Resource Type:: Honors College Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Lawrence W. Neal for the degree

ScholarsArchive@OSU

The Effects of UV Irradiation on the Biosorption of Titanium Dioxide Nanoparticles to Heterotrophic Biomass

Systematically evaluating the developmental toxicity of nanomaterials using the zebrafish model

Modeling of Power Efficiency in a Magnetohydrodynamic Generator

Electrical Transport Measurements Show Intrinsic Doping and Hysteresis in Graphene p-n Junction Devices

Utilization of Robot Ankle Torque to Account for Foot Placement Error

Implementation of a comparative method for measuring photoluminescence quantum yield of novel compounds in solution

Adapting the Methylene Blue Sulfide Detection Method for Use in a Microfluidic in-situ Monitoring Device

Effects of Marijuana on Risky Decision-Making in Young Adult College Students

Protection of Nitrosomonas europaea from Silver Nanoparticle-Induced Inhibition through a Two-Step, Magnesium-Facilitated Mechanism

Detection and Segmentation of Bird Song in Noisy Environments

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