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Comparing The Sensitivity And Specificity Of Novel Motor Assessments For Traumatic Brain Injury, Paula K. Johnson, Ariana M. Hedges-Muncy, Erin D. Bigler, Lorie Richards, Steven Knight Charles Jan 2025

Comparing The Sensitivity And Specificity Of Novel Motor Assessments For Traumatic Brain Injury, Paula K. Johnson, Ariana M. Hedges-Muncy, Erin D. Bigler, Lorie Richards, Steven Knight Charles

Faculty Publications

Background: Portable technology that records movements with high accuracy provides potential for sensitive clinical movement tests for individuals who experienced a traumatic brain injury (TBI). Objective: (1)To present impairments assessed using markerless motion capture (MMC) and (2) to compare the sensitivity and specificity of the MMCmediated tests to each other and to common clinical tests. Design: Screening study, using as criterion standard the ability to classify participant with TBI versus control participant. Setting: Research laboratory. Participants: The study included 30 individuals with TBI and 101 control participants. Entry criteria included most recent head injury < 5 years old, no history of movement issues prior to injury, no movement-affecting medications, and sufficient cognitive ability to follow instructions. Interventions: Not applicable. Main Outcome Measures: Performance on MMC-mediated tests and existing clinical analogs. MMC-mediated tests included finger oscillation, simple reaction time, and visually guided movement tasks. For comparison, participants also completed the following clinical tests: Halstead–Reitan finger tapping, simple reaction time test, and Beery Visuomotor Integration test. Impairments were identified as test scores of participants with TBI that fell outside of the 95% interval of control participants’ test scores. Random forest analysis was used to calculate the sensitivity and specificity of MMC and clinical tests according to their ability to correctly classify participants with TBI and control participants. Results: MMC-mediated tests revealed impairments in more participants with TBI than clinical tests in all three TBI groups (mild, repeated, and moderate to severe). Similarly, MMC-mediated tests revealed a higher percentage of scores as impairments than clinical tests in all three groups with TBI. Furthermore, MMC-mediated tests proved more sensitive and more specific than clinical tests (70% versus 50% and 98% versus 93%, respectively). Conclusion: MMC-mediated tests are sensitive and specific (compared to traditional clinical tests) and have potential to fill a gap in clinical care of TBI.


Genomic Differences And Parentage In West Virginia's Reintroduced Elk (Cervus Canadensis), Adam A.V. Cook Jan 2025

Genomic Differences And Parentage In West Virginia's Reintroduced Elk (Cervus Canadensis), Adam A.V. Cook

Graduate Theses, Dissertations, and Problem Reports (ETD)

Elk (Cervus canadensis) reintroductions have been common in the 20th and 21st centuries, yet 40% have failed to establish self-sustaining elk populations due to a lack of post-reintroduction demographic monitoring. Elk were reintroduced to West Virginia in 2016 following more than a century of absence after the species was extirpated in 1875. Elk were translocated to West Virginia from Land Between the Lakes National Recreation Area (LBL) in eastern Kentucky and from Arizona. The two groups of elk differ in their subspecies, physiology, reintroduction history, connectivity, and habitat. Reintroductions create genetic risks such as the founder effect and …


Mechanisms Of Neurovascular Dysfunction In Chronic Ischemic Stroke: Insights From Sex And Aging, Briana L. Clary Jan 2025

Mechanisms Of Neurovascular Dysfunction In Chronic Ischemic Stroke: Insights From Sex And Aging, Briana L. Clary

Graduate Theses, Dissertations, and Problem Reports (ETD)

Ischemic stroke is the leading cause of long-term disability world-wide. These disabilities can include both cognitive impairment and sensorimotor deficits. Due to the prevalence of post-stroke functional deficits, it is imperative to identify novel therapeutic targets and develop new treatments. These cognitive deficits are a result of damage to the neurovascular unit (NVU), a term used to describe the relationship between the cerebral vasculature and other cell types within the brain. Cognitive impairment as a result of damage to the NVU is referred to as vascular contributions to cognitive impairment and dementia (VCID), and it is estimated that between 25-30% …


Microbiological Examination Of Yellow Mealworm (Tenebrio Molitor) Larvae Under Various Processing And Storage Conditions As Potential For Human Consumption, Rachel Midkiff Jan 2025

Microbiological Examination Of Yellow Mealworm (Tenebrio Molitor) Larvae Under Various Processing And Storage Conditions As Potential For Human Consumption, Rachel Midkiff

Graduate Theses, Dissertations, and Problem Reports (ETD)

Yellow mealworm (Tenebrio molitor) larvae have gained attention as a sustainable and nutritionally balanced food source, yet their high natural bacterial load raises food safety concerns. This study investigates the impact of pre-processing, processing, and storage conditions on microbial load and diversity in mealworms, comparing thermal (hot) and non-thermal (cold) treatments. These treatments include freeze-drying, wet heat treatments, dry heat treatments, and the combination of wet and dry heat treatments against untreated controls. Microbial loads were quantified by plate counts after day 0, day 10, and day 28 of vacuum-sealed refrigerated (4°C) storage. Water activity (Aw), pH, and moisture content …


Mathematical Contributions To The Study Of Chemotaxis And Cell Signaling, Hajr Zam Jan 2025

Mathematical Contributions To The Study Of Chemotaxis And Cell Signaling, Hajr Zam

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation presents results from two mathematical projects concerned with the biology of cells. Chapter 1 provides biological background and places the two mathematical problems in the context of cell signaling. The larger project, with Prof. H. Hattori on a chemotaxis model is presented in Chapters 3 and 4. Work with Prof. \'{A}. Hal\'{a}sz on a chemical reaction network system with linear multimers and two types of labels is presented in Chapter 2. The chemotaxis system describes the one-dimensional dynamics of a species of cells with two chemical species, a chemo-attractant and chemo-repellent. The goal is to analyze the behavior …


Late Ordovician Evolution Of Sea Scorpions: Eurypterids Of The Big Hill Lagerstätte, Joseph Donaldson Bingham Jr. Jan 2025

Late Ordovician Evolution Of Sea Scorpions: Eurypterids Of The Big Hill Lagerstätte, Joseph Donaldson Bingham Jr.

Graduate Theses, Dissertations, and Problem Reports (ETD)

Eurypterids are a group of diverse chelicerates that first appeared during the Middle Ordovician (467.3 Ma) and went extinct at the end of the Permian (251.9 Ma). The fossil record of eurypterids during the Ordovician is relatively sparce, comprising only 12 species representing the Megalograptidae, a ‘waeringopterid’ clade, Rhenopteridae, Onychopterellidae, Adelophthalmoidea, and Eurypteroidea clades. This study describes early eurypterids from the Katian aged (~452 Ma) Big Hill Lagerstätte of Michigan. The described material represents two new species, herein named Machipterus margaritae sp. nov. (based on 21 specimens preserving the ventral prosoma and prosomal appendages, and opisthosoma) and Dikranopterus lysinae sp. …


Impact Of Whey And Soy Protein Supplementation On Resistance Training In Young Adults: A Systematic Literature Review And Meta-Analysis, Brandon Eric Davis Jan 2025

Impact Of Whey And Soy Protein Supplementation On Resistance Training In Young Adults: A Systematic Literature Review And Meta-Analysis, Brandon Eric Davis

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Whey protein is a popular supplement in sports nutrition. Soy protein is an alternative to whey protein, often marketed to individuals following a plant-based diet. Evaluating whey and soy protein supplementation's role in resistance exercise is essential for providing evidence-based nutrition guidance.

Objective: The study aim was to conduct a systematic literature review and meta-analysis on randomized control trials (RCTs) on the effectiveness of whey and soy protein supplementation on outcomes of lean body mass (LBM), squat, bench press, and plasma essential plasma amino acid (EAA) levels in young adult men and women.

Methods: The databases …


A Framework For Biomimetic Robot Design Applied To The Development Of A Robotic Model Of Drosophila Melanogaster, Clarissa A. Goldsmith Jan 2025

A Framework For Biomimetic Robot Design Applied To The Development Of A Robotic Model Of Drosophila Melanogaster, Clarissa A. Goldsmith

Graduate Theses, Dissertations, and Problem Reports (ETD)

For decades, the field of biologically inspired robotics has leveraged insights from animal locomotion to improve the walking ability of legged robots. Recently, “biomimetic” robots have been developed to model how specific animals walk. By prioritizing biological accuracy to the target organism rather than the application of general principles from biology, these robots can be used to develop detailed biological hypotheses for animal experiments, ultimately improving our understanding of the biological control of legs while improving technical solutions. Much of this work involves biologically inspired walking controllers informed by the morphology and dynamics of the insect nervous system, which necessitate …


Exploring Teacher Perception And Implementation Of Sae Programming In West Virginia, Joseph Laflamme Jan 2025

Exploring Teacher Perception And Implementation Of Sae Programming In West Virginia, Joseph Laflamme

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to describe the phenomenon of SAE implementation in West Virginia. This study utilized qualitative research methodology to describe teacher perceptions of how student, guardian, school and community factors affect SAE program implementation. Additionally, teacher backgrounds, including formative experiences, training and education, guiding philosophies, skills, and motivation were explored. This study describes contextual aspects of population, economics, state guidelines and local agriculture industries. This is done through a document review of student reported records as well as surveys and teacher interviews.


Back To The Future Self: Parsing Age Effects In Future Self-Continuity Through Goal Orientation And Life Satisfaction, Laken A. Mooney Jan 2025

Back To The Future Self: Parsing Age Effects In Future Self-Continuity Through Goal Orientation And Life Satisfaction, Laken A. Mooney

Graduate Theses, Dissertations, and Problem Reports (ETD)

Future self-continuity, the psychological feeling of connectedness between the current and the future self, is a relatively novel concept that is associated with and has been used to predict a variety of outcomes. Though work investigating individual differences is comparatively rare, a robust demographic difference found in previous literature is the presence of an age effect, where older adults are more likely to feel a greater connection to their future self than younger adults. This finding has been replicated a number of times, but potential mechanisms behind this observed age-related increase have yet to be fully uncovered. Limited previous work …


The Abuse Liability Of Oral Nicotine Pouches In Electronic Cigarette Users, Jakob D. Bohland Jan 2025

The Abuse Liability Of Oral Nicotine Pouches In Electronic Cigarette Users, Jakob D. Bohland

Graduate Theses, Dissertations, and Problem Reports (ETD)

Oral nicotine pouches (ONPs) are products containing synthetic or tobacco derived nicotine in a cellulose pouch. While relatively novel in their current state, ONPs are increasing in popularity, with little known about their national level prevalence. Extant work has suggested that electronic cigarette (e-cig) users may be interested in ONPs; however, no abuse liability studies have been conducted comparing ONPs directly to e-cigs. In the few abuse liability studies that have been conducted, ONPs have been evaluated in comparison to combustible cigarettes or smokeless tobacco (SLT). These studies suggest ONPs may be less reinforcing than combustible cigarettes or SLT. Therefore, …


Membrane Reactor Modeling And Optimization For Hydrogen Production, Ayooluwa Tomiwa Akintola Jan 2025

Membrane Reactor Modeling And Optimization For Hydrogen Production, Ayooluwa Tomiwa Akintola

Graduate Theses, Dissertations, and Problem Reports (ETD)

There has been an ongoing trend toward cleaner fuels for more environmentally benign forms of energy generation. Recently, hydrogen has been identified as a clean fuel for energy generation. However, the most established, efficient, and widely utilized technique for producing hydrogen remains the steam methane reforming (SMR) in the presence of catalyst. Unlike other fossil fuels, utilizing methane from natural gas in an SMR process to produce hydrogen emits less, but yet a notable sum of carbon dioxide. Furthermore, the endothermic nature of SMR reactions imply that there is a high energy requirement to obtain a substantial amount of hydrogen …


Xanthine Oxidoreductase, Uric Acid, And Iron Homeostasis: Discovering A Therapeutic Vulnerability In Breast Cancer, Matthew G. Chapa Jan 2025

Xanthine Oxidoreductase, Uric Acid, And Iron Homeostasis: Discovering A Therapeutic Vulnerability In Breast Cancer, Matthew G. Chapa

Graduate Theses, Dissertations, and Problem Reports (ETD)

Breast cancer remains the most frequently diagnosed malignancy and the leading cause of cancer related deaths in women. This is primarily due to distant metastases, which highlight the necessity to understand factors that contribute to breast cancer progression. Emerging evidence associates decreased tumor xanthine oxidoreductase (XOR) expression with a poorer prognosis, increased recurrence, and a more aggressive phenotype. While healthy liver, intestines, kidneys, and breast tissue have robust XOR expression and activity, there is a tendency for this to be ablated in carcinogenesis. This dissertation investigates XOR's role in breast cancer and identifies its product, uric acid (UA), as possessing …


Adolescent Attachment And Anxiety: Examining Implicit Emotion Beliefs And Emotion Regulation As Mediators, Jeanette Pool Jan 2025

Adolescent Attachment And Anxiety: Examining Implicit Emotion Beliefs And Emotion Regulation As Mediators, Jeanette Pool

Graduate Theses, Dissertations, and Problem Reports (ETD)

Anxiety is a growing issue in adolescents, with teens reporting worse and more severe symptoms in recent years (Kajastus et al., 2023; Solmi et al., 2022). There are several risk factors for developing anxiety symptoms, including cognitive, behavioral, and social factors. Effective emotion regulation (ER) has been shown to be helpful in decreasing anxiety symptom levels (Arbulu et al., 2023; Cho et al., 2019). A better understanding of precursors of ER could aid in prevention of anxiety. ER may stem from our personal beliefs about emotions (Ford et al., 2018; Schroder et al., 2015; Tamir et al., 2007) and to …


Beyond The Byproduct: Exploring Approaches For The Sustainable Valorization Of Underutilized Food Streams, Ian Phillip Israelsen Jan 2025

Beyond The Byproduct: Exploring Approaches For The Sustainable Valorization Of Underutilized Food Streams, Ian Phillip Israelsen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Commercial food processing creates side-streams that are often underutilized yet hold significant potential for valorization into value-added products for consumer use. This study investigated and compared potential protein recovery and lipid removal potential from buckwheat (BW; Fagopyrum esculentum Moench), brewer’s spent grain (BSG), and coffee silverskin (CSS) using a one-step solvent defatting and a pH-shift protein extraction method. The extraction efficiency yields of extracted protein from CSS were significantly lower than all other samples (p < 0.05). The defatted BW had the highest extracted protein content of all samples (p < 0.05). The sizes of the proteins in the starting materials were observed using LDS-PAGE. These sizes were consistent with published values and were mostly unchanged by defatting or the pH-shift process. The presence of 13S globulins and 2S albumins was confirmed under reducing conditions. Protein extracted from all native samples had lower total free essential amino acids than the starting materials. Native CSS and extracted protein followed this trend, but in defatted CSS and respective extracted protein samples, the extracted proteins had higher free essential amino acid content than the starting materials, sometimes of twofold or greater (p < 0.05). After defatting, the percentage of lipids recovered compared to the original lipid content of the samples was measured. The crude fat content of native and hexane-defatted BW flour was higher than BW flour defatted with ethanol (p < 0.05). The lipid extraction efficiency of all samples ranged from 4.6 ± 1.26%–43.20 ± 14.21%. The mass of the native and defatted starting materials were recorded at each step of processing, with reasonable losses assessed. The major non-polar lipid classes in each starting material were separated using thin-layer chromatography. All samples also displayed the presence of polar lipids. When comparing starting materials, BW and BSG was the most effective for protein extraction, and BSG has the most promise for lipid removal and potential for upcycling. All the examined starting materials show promise for use in food supplementation, especially as native flours. These products are plentiful and considered underutilized or side-stream products.


Do Dung Beetles Sink Or Swim: Exploring Dung Beetle Response To Precipitation, Lauren T. Cheshire Jan 2025

Do Dung Beetles Sink Or Swim: Exploring Dung Beetle Response To Precipitation, Lauren T. Cheshire

Graduate Theses, Dissertations, and Problem Reports (ETD)

Global climate change constitutes a major threat to biodiversity and ecosystem services of many taxa. The Mid-Atlantic region of the US is expecting to see an increase in extreme precipitation events and flooding. Dung beetles (Scarabaeinae) can tunnel below the soil surface allowing for water to dissipate into the soil rather than sit on the surface and add to flooding conditions. They also can decrease methane emission by burying dung and reduce outbreaks of pests that prefer the moist environment of dung. They contribute roughly $380 million in ecosystem services annually in the United States, yet their services may be …


Resilience In Adolescents With Type 1 Diabetes: The Relation Between Grit, Benefit-Finding, Diabetes Distress, Hba1c And Health-Related Quality Of Life, Hannah Hardiman Jan 2025

Resilience In Adolescents With Type 1 Diabetes: The Relation Between Grit, Benefit-Finding, Diabetes Distress, Hba1c And Health-Related Quality Of Life, Hannah Hardiman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background: Type 1 diabetes (T1D) is a common pediatric chronic illness that requires complicated management by both the child and their caregiver. Research and clinical guidelines have highlighted adherence (as measured by HbA1c) and health-related quality of life (HRQOL) as important outcomes particularly in adolescents with T1D. Notably, diabetes distress has been identified as a risk factor contributing to poor adherence and HRQOL outcomes in this population. Given these considerations, understanding what resilience factors contribute to optimal outcomes is vitally important to inform future interventions. Grit and benefit-finding are two novel resilience factors that have yet to be fully evaluated …


Influence Of Different Rates Of Biochar And Deer Browsing On Pollinator Plant Productivity, Bipana Bhusal Jan 2025

Influence Of Different Rates Of Biochar And Deer Browsing On Pollinator Plant Productivity, Bipana Bhusal

Graduate Theses, Dissertations, and Problem Reports (ETD)

Biochar, a carbon-rich material produced from biomass, has received wide attention for soil amendment to improve plant growth. However, its specific effects on pollinator friendly plants remain poorly understood. In this study, we evaluated the effects of four biochar application rates (0, 10, 20, 40 tons/acre) and deer exclusion (fenced vs. unfenced) on the productivity of three pollinator species; Buckwheat (Fagopyrum esculentum), Plains Coreopsis (Coreopsis tinctoria), and Black-eyed Susan (Rudbeckia hirta) in a utility right of way with a history of mining. A split-plot randomized design was used, and the results were analyzed using …


No Man’S A Stone: A Qualitative Approach To Characterizing Masculinity In Older Adulthood, Montgomery T. Owsiany Jan 2025

No Man’S A Stone: A Qualitative Approach To Characterizing Masculinity In Older Adulthood, Montgomery T. Owsiany

Graduate Theses, Dissertations, and Problem Reports (ETD)

Suicide rates are exceedingly high in U.S. older men (aged 65 years and older). In 2020, older men were about 6.5 times more likely to die by suicide than older women and 1.14 times more likely than men aged 18 to 64 years. Masculine norms (e.g., emotional suppression, self-reliance, anger, physical toughness risk-taking behaviors, alcohol misuse) are believed to influence the presentation of mental disorders, such as depression, which has led to the conceptualization of masculine depression. Research on masculinity often focuses on the experiences of younger men, ignoring how gender identities may change as one progresses through adulthood. Meanwhile, …


Computational Approaches For Diagnosing Neurological Impairments And Restoring Functional Movement, Serhii Bahdasariants Jan 2025

Computational Approaches For Diagnosing Neurological Impairments And Restoring Functional Movement, Serhii Bahdasariants

Graduate Theses, Dissertations, and Problem Reports (ETD)

Movement is the primary means by which the nervous system converts intention into interaction with the environment. Voluntary limb motion enables standing, walking, reaching, and grasping—actions that underpin self‑care, communication, and economic participation. When diseases or injuries disrupt the pathways that couple neural commands to muscle forces—whether through cortical stroke, spinal cord injury, or peripheral nerve damage—mechanical outcomes such as weakness, loss of coordination, and ultimately reduced mobility emerge. These impairments cascade into secondary complications, increased dependence on caregivers, and diminished quality of life. Quantifying how the lesion alters the mechanics of movement is therefore essential for designing targeted interventions …


Functionalized Carbon Nanohoops: Synthesis, Structural Insights, And Pathways To Carbon Nanobelts, Liu Li Jan 2025

Functionalized Carbon Nanohoops: Synthesis, Structural Insights, And Pathways To Carbon Nanobelts, Liu Li

Graduate Theses, Dissertations, and Problem Reports (ETD)

The development of structurally defined carbon nanostructures has gained significant attention due to their unique electronic, optical, and mechanical properties. Cycloparaphenylenes (CPPs), also known as carbon nanohoops, and carbon nanobelts (CNBs) represent key molecular segments of carbon nanotubes (CNTs), offering a bottom-up approach to precise nanotube construction. This dissertation focuses on the synthesis, structural characterization, and functionalization of CPPs, as well as the development of novel synthetic pathways for CNBs. A series of functionalized CPPs, including [9]-, [12]-, [15]-, and [18]CPPs, were synthesized using a modular approach involving a Diels-Alder adduct formation followed by a Ni(cod)2/bpymediated macrocyclization reaction. The influence …


Efficacy Of Salmonella Surrogate Enterococcus Faecium In Poultry And Mash Broiler Feed, Corey Waitman Coe Jan 2025

Efficacy Of Salmonella Surrogate Enterococcus Faecium In Poultry And Mash Broiler Feed, Corey Waitman Coe

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation investigates the efficacy of Enterococcus faecium as a surrogate for Salmonella in validating thermal inactivation processes during poultry feed manufacturing and meat processing. The research encompassed three studies evaluating microbial kinetics in mash broiler feed, reconstructed ground chicken, and predictive modeling approaches to improve food safety interventions. In the first study, the thermal resistance of nalidixic acid-resistant Salmonella Typhimurium and E. faecium was compared in mash broiler feed heated at 75–95°C. Results demonstrated that E. faecium exhibited significantly greater heat resistance than Salmonella, with longer shoulder times, greater tailing effects, and higher D-values, supporting its use as …


Neuroendocrine Regulation Of The Luteinizing Hormone Surge And Puberty Onset In Sheep, Max J. Griesgraber Jan 2025

Neuroendocrine Regulation Of The Luteinizing Hormone Surge And Puberty Onset In Sheep, Max J. Griesgraber

Graduate Theses, Dissertations, and Problem Reports (ETD)

Gonadotropin-releasing hormone (GnRH), luteinizing hormone (LH), and follicle stimulating hormone (FSH) are essential for the reproduction of all mammalian species, including both sheep and humans. GnRH is secreted by hypothalamic neurons into the hypophyseal portal vasculature in a pulsatile manner, which then acts within the anterior pituitary to elicit the release of LH and FSH into wider systemic circulation. In females LH and FSH act on the ovaries to promote estradiol (E2) production, follicular development, and under certain conditions in regard to LH, ovulation. Furthermore, while E2 inhibits GnRH and subsequent LH secretion under most conditions, at high concentrations E2 …


Social Support And Negative Affective Outcomes Among Older Adults: Does Valuing Autonomy Matter?, Erika Anne Fenstermacher Jan 2025

Social Support And Negative Affective Outcomes Among Older Adults: Does Valuing Autonomy Matter?, Erika Anne Fenstermacher

Graduate Theses, Dissertations, and Problem Reports (ETD)

While not a normal part of aging, depression is a concerning psychiatric condition in late life. Depression is a significant predictor of suicide and the highest rates of suicide occur in middle aged and older adult men. One factor that may protect against depression and suicidal behavior among older adults is social support. Social support has been demonstrated as a significant factor in health and well-being. Perceived social support has consistently been linked to beneficial outcomes, however, received support has mixed results with some studies even finding received support to be harmful. For individuals who highly value autonomy, it may …


Long-Term Trends In Brook Trout Production And Large Wood In West Virginia Headwater Streams, Halden D. Edwards Jan 2025

Long-Term Trends In Brook Trout Production And Large Wood In West Virginia Headwater Streams, Halden D. Edwards

Graduate Theses, Dissertations, and Problem Reports (ETD)

Projects which monitor long-term trends in ecosystems are uncommon but extremely important in the management of fish and wildlife populations. By assessing the health of a population or community over multiple temporal scales, these projects provide true insight into population success that cannot be elucidated through short-term studies. Long-term projects are also instrumental in assessing the effects of disturbance events as they provide valuable baseline information which can be compared to data collected post-disturbance. Even more importantly, long-term studies can help identify crucial changes in the health and success of imperiled and invaluable species to improve and focus conservation efforts. …


Artificial Intelligence Approaches For Membrane Fouling Prediction, Yazhou Jiang Jan 2025

Artificial Intelligence Approaches For Membrane Fouling Prediction, Yazhou Jiang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Abstract

Membrane fouling is a persistent and critical challenge in membrane-based separation processes, resulting in reduced performance, higher energy consumption, and increased operational and maintenance costs. Addressing this issue is essential for improving the long-term sustainability and efficiency of membrane systems. This report provides a comprehensive overview of membrane fouling mechanisms—such as organic, inorganic, particulate, and biofouling—and explores the growing role of Artificial Intelligence (AI) in tackling this problem. Specifically, it reviews three widely adopted AI techniques: Artificial Neural Networks (ANN), Fuzzy Logic (FL), and Support Vector Machines (SVM). Each method is examined through a series of literature-based case studies, …


Molecular Characterization Of Fungus-Arthropod Associations, Angie M. Martin Jan 2025

Molecular Characterization Of Fungus-Arthropod Associations, Angie M. Martin

Graduate Theses, Dissertations, and Problem Reports (ETD)

Arthropods, or phylum Arthropoda, are the largest group of animals, accounting for over three quarters of all animal records on NCBI Taxonomy. And yet, only 40% of all deposited sequences on NCBI Nucleotide come from arthropods. Clearly, arthropods are an understudied group of animals: they are small, often drab, and lead lives very alien to our own. Arthropods have chitinous exoskeletons, segmented bodies, and jointed appendages, and include crabs, barnacles, insects, spiders, and millipedes. Since the era of DNA based studies took off in the 1980s, DNA and other small molecules have been integral to our understanding of the Earth …


Vital Rates And Nest Site Selection Of Merriam’S Wild Turkeys (Meleagris Gallopavo Merriami) In South-Central, South Dakota, Luke N. Mccray Jan 2025

Vital Rates And Nest Site Selection Of Merriam’S Wild Turkeys (Meleagris Gallopavo Merriami) In South-Central, South Dakota, Luke N. Mccray

Graduate Theses, Dissertations, and Problem Reports (ETD)

Wild turkeys (Meleagris gallopavo) are an economically and culturally significantly game species throughout much of the United States. Within South Dakota, spring turkey hunting generates approximately $20 million in expenditures annually to local economies. Merriam’s wild turkeys (Meleagris gallopavo meriami) were reintroduced to the Missouri River Breaks of Gregory County, South Dakota, USA, between the 1950s and 1980s, and was one of the most successful reintroductions in the state. However, a recent decline in gobbler harvest suggests a potential decline in this population. To estimate survival and reproduction and evaluate nest site selection, we captured 121 …


Comparative Analysis Of Electrode Encapsulation Reliability: Planar Vs. Thermoformed Interdigitated Neural Electrodes In Biomedical Engineering, Tatum Peyerl Jan 2025

Comparative Analysis Of Electrode Encapsulation Reliability: Planar Vs. Thermoformed Interdigitated Neural Electrodes In Biomedical Engineering, Tatum Peyerl

Graduate Theses, Dissertations, and Problem Reports (ETD)

Durable dielectric encapsulation is crucial for the long-term function of implantable neural electrodes; however, the reliability of curved, thermoformed coatings remains underexplored. This study addresses that gap by comparing planar (non-thermoformed) and thermoformed interdigitated neural electrodes (IDEs) encapsulated in Polyimide-2611. Both device types underwent accelerated in vitro aging in phosphate‑buffered saline (PBS) at 67 °C for approximately 91 days, simulating two years of physiological exposure. Post-accelerated aging evaluation included electrochemical impedance spectroscopy (EIS) from 0.1 Hz to 100 kHz to monitor moisture‑induced leakage, and high‑voltage breakdown testing under saline immersion to assess dielectric strength. After aging, all electrodes maintained impedance …


Evaluating Osmia Cornifrons As An Effective Pollinator For Agricultural Crops: An Analysis Of Hair Morphology And Sex-Ratio Distorting Bacterium, Wolbachia, Nellie Heitzman Jan 2025

Evaluating Osmia Cornifrons As An Effective Pollinator For Agricultural Crops: An Analysis Of Hair Morphology And Sex-Ratio Distorting Bacterium, Wolbachia, Nellie Heitzman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Effective pollination relies not only on the presence of pollinators but also on their morphological adaptations and reproductive biology. In this study, I investigated both the external hair morphology and the intracellular bacterial infection status of Osmia cornifrons, a solitary bee species increasingly used in orchard pollination due to its efficiency and early seasonal activity. Using Scanning Electron Microscopy (SEM), I characterized the distribution and structure of two major hair types present on the bee's body: branched and unbranched. Branched hairs were found widely distributed across the head, thorax, dorsal abdomen, and legs, and appeared to function primarily in incidental …