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Novel, Ultra-Fast Electrochemical Sensors For The Enhanced Detection Of Neurotransmitters And Toxic Heavy Metals In Aqueous Solutions, Noel Manring
Theses and Dissertations
Neurodegenerative diseases (NDDs) are a growing global health concern, affecting millions of people worldwide. NDDs arise from the progressive loss of neuronal cell function, ultimately leading to cell death. Abnormal levels of neurotransmitters, the chemical messengers in the brain, have also been linked to NDDs. Despite various treatments and medications aimed at alleviating physical and mental symptoms, there is currently no cure or means to halt disease progression. While the exact pathogenesis of NDDs remain poorly understood, cognitive decline is largely attributed to brain volume reduction, particularly in the hippocampus. Clinical studies suggest that environmental factors, such as exposure to …
Impact Of Delphi-Developed Rubrics On Rater Consistency In 14 Cfr 141 Flight Training Assessment Environments, Lewis Robert James Archer
Impact Of Delphi-Developed Rubrics On Rater Consistency In 14 Cfr 141 Flight Training Assessment Environments, Lewis Robert James Archer
Theses and Dissertations
Pilot schools operating in accordance with 14 CFR 141 provide a substantial supply of pilots to the aviation industry. Recent high industry demand for pilots has created turnover among the flight instructor workforce, often considered an entry-level position used by aspiring aviators to build flight experience. This in turn means that check instructors, evaluators who are often selected from the more senior flight instructor population at a pilot school, are generally less experienced than in the past. Anecdotal evidence suggests that there is low consistency among these check instructors when conducting performance-based assessments. This study sought to determine the existing …
Targeting World Language Learning In The Target Language: A Qualitative Inquiry Of The K–12 Foreign Language Teacher Experience, Igor Ljevaja
Theses and Dissertations
This qualitative study explores the current practices of K–12 foreign language teachers (FLTs) in using the target language (TL) within an urban school district in the Midwest United States. Focusing on how FLTs engage in professional development (PD) to optimize their TL use in the classroom, the study investigates the strategies and knowledge FLTs employ to foster TL proficiency among students. Purposeful sampling was employed to recruit participants (n = 5) who represented full-time FLTs, taught between sixth and 12th grade, and had at least four years of teaching experience and valid state licenses. Semi-structured interviews with current FLTs provide …
The Reservoir Geomechanics And Production Effects On Permafrost Stability During Polymer Eor, Shane S. Namie
The Reservoir Geomechanics And Production Effects On Permafrost Stability During Polymer Eor, Shane S. Namie
Theses and Dissertations
The North Slope of Alaska (ANS) contains an estimated 40 billion barrels of heavy oil in relatively shallow formations (984 to 1,969 ft / 304 to 600 m) within the Prudhoe Bay Unit (PBU), Milne Point Unit (MPU) and Kuparuk River Unit (KRU). Extracting this resource presents unique challenges, especially when hydrocarbon-bearing zones are near the permafrost. Research on tertiary recovery processes in these shallow zones is limited, with prior studies indicating minor permafrost thawing and subsidence over 30 to 40 years but lacking a numerical simulation model supported by laboratory data.This study investigates the feasibility of an enhanced oil …
Using Nano-Ities For Detection Of Metal Ions In Complex Aqueous Solutions, Mohammed Muzammil Nishar Ahmed
Using Nano-Ities For Detection Of Metal Ions In Complex Aqueous Solutions, Mohammed Muzammil Nishar Ahmed
Theses and Dissertations
Recent urbanization has induced a rapid increase in heavy metal exposure to humans. The exploitation of heavy metals for economic gains coupled with poor and economically infeasible recycling methods have led to poor management of heavy metal wastes, which has opened up several pathways for heavy metals to enter the human body. Such heavy metals target many vital organs, but the early symptoms are common and difficult to diagnose. Severe symptoms appear in later stages and are very expensive to treat and the damage caused to the health are not typically reversable in such later stages. To counter this issue, …
Demonstrating Feasibility Of Ultrasound-Sensitive Microbubbles Delivery To Treat Disruptions In The Blood Brain Barrier Endothelium, Rubens Jourdain
Demonstrating Feasibility Of Ultrasound-Sensitive Microbubbles Delivery To Treat Disruptions In The Blood Brain Barrier Endothelium, Rubens Jourdain
Theses and Dissertations
Vascular cognitive impairment and dementia (VCID) is one of the main causes of dementia. VCID is caused by age and other genetic factors that lead to disruptions in the blood brain barrier (BBB) and allow blood components to enter the brain. The currently available treatments of VCID include opening the BBB with high-frequency-ultrasound to deliver drugs to the brain. However, this only treats the already developed disease. Consequently, we developed a new drug delivery system whose goal is to restore the brain capillary endothelial cells (BCEC) lining the blood vessel. The objective of this study was to demonstrate the feasibility …
Investigation Of Reproductive Inhibition During Chronic Heat Stress In C. Elegans, Macy Makenna Nielander
Investigation Of Reproductive Inhibition During Chronic Heat Stress In C. Elegans, Macy Makenna Nielander
Theses and Dissertations
Nearly all organisms experience heterogeneity in environmental conditions that can negatively impact fitness. A common adaptive strategy to reduce the impact of this stress is called facultative diapause, where development and reproduction are temporarily arrested to promote survival. Facultative diapause is characterized by three major criteria, the arrest must be (i) induced by an unfavorable environmental condition, (ii) reversible, and (iii) driven by genetically regulated mechanisms. The aim of this thesis was to determine whether chronic heat-induced inhibition of egg laying in Caenorhabditis elegans represents a novel form of facultative diapause. It was found that the inhibition of egg-laying is …
Evaluating Uas As A Tool For Improving Elk Population Counts In A Suburban Forested Area Of North Central Colorado, Michael Wussow
Evaluating Uas As A Tool For Improving Elk Population Counts In A Suburban Forested Area Of North Central Colorado, Michael Wussow
Theses and Dissertations
For decades, wildlife researchers have taken advantage of an aerial perspective for performing population counts because of challenges associated with ground observations. Due to advances in aviation technology and regulations, unoccupied aerial systems (UAS) have become increasingly available for wildlife population monitoring in addition to manned aircraft, with success largely dependent on the species, their habitat, and UAS utilized. This study compares a currently accepted method of counting North American elk (ground/spotting scope counts) to a novel method (UAS) to evaluate if a commercial-off-the-shelf quadcopter (COTS) UAS equipped with zoom-capable RGB cameras would be an acceptable tool for counting elk …
Division I Female Business Student-Athletes And Career Readiness During Their Academic Careers At A 4-Year Institution, Brianna Black
Division I Female Business Student-Athletes And Career Readiness During Their Academic Careers At A 4-Year Institution, Brianna Black
Theses and Dissertations
The purpose of this project is to explore female student-athletes within a business major and the transition from student-athlete into a professional career in a nonplaying sport capacity. This qualitative study examines eight female student-athletes who have selected a business major and their experiences with career readiness. Literature shows that student-athletes are behind in aspects of career readiness due to their focus on academic coursework and aspects of athletics with potential hopes of still becoming professional athletes. In addition, female student-athletes specifically business students are behind their counterparts due to the competitive nature of being a business student let alone …
Fluorescence Imaging Systems To Detect Contamination On Surfaces Common In Food Processing And Medical Facilities, Benjamin Hu
Fluorescence Imaging Systems To Detect Contamination On Surfaces Common In Food Processing And Medical Facilities, Benjamin Hu
Theses and Dissertations
Biofilm are aggregates of microbial cells encased under an extracellular polymeric substance (EPS) and resist sanitizers or antibiotics. Because of their persistence on various surfaces such as medical devices or industrial piping, biofilm formation is associated with approximately 65% of all microbial infections. Thus, their detection and deactivation are of great importance to public health. Many detection methods such as swabbing require sampling by rubbing , which can be inefficient and challenging. This study proposes the use of handheld multispectral fluorescence imaging systems to detect and deactivate biofilm in situ. We utilized the Contamination and Sanitization Inspection (CSI) and -Disinfection …
Numerical Simulation And Assessment Of Underground Blue Hydrogen Storage In Depleted Gas Reservoir, Abraham Kazala
Numerical Simulation And Assessment Of Underground Blue Hydrogen Storage In Depleted Gas Reservoir, Abraham Kazala
Theses and Dissertations
Nowadays, the world needs more energy than ever before. This need emphasizes that the world also requires a sustainable system that can meet these growing demands while addressing the overall impact on the environment. For this reason, the international community, including all levels of environmental policymakers, have shown a great deal of concern about the tremendous negative effects of fossil fuels on the globe. The impact of carbon dioxide as a Greenhouse Gas (GHG) from burning fossil fuels on the ozone layer and what it entails in global warming and, therefore, climate change has motivated research on finding either alternatives …
Cyclical Musicians: Collegiate Music Students’ Experiences Of Instrumental Musicking Processes Across The Menstrual Cycle, Anne Marques Catarin
Cyclical Musicians: Collegiate Music Students’ Experiences Of Instrumental Musicking Processes Across The Menstrual Cycle, Anne Marques Catarin
Theses and Dissertations
Instrumental music researchers tend to focus on non-sex-specific health topics, such as posture (e.g., Garnett et al., 2022; Rousseau et al., 2023), musculoskeletal health (e.g., Mizrahi, 2020; Pratt et al., 2020), or neurological movement disorders (e.g., Altenmüller & Jabusch, 2010; Frucht, 2009). Despite the considerable extent of topics covered in musician health, the role of menstrual health in instrumentalists is currently underdeveloped. Using a case study design (Stake, 1995; Yin, 2014), I explored the unspoken experiences of collegiate instrumental music majors who menstruate, in an investigation to better understand the role of menstrual cycles in their musicking. For four months, …
Hydraulic Fracturing And Reservoir Simulation Modeling Of Enhanced Geothermal System Optimization For Economical Energy Production, Jerjes W Porlles Hurtado
Hydraulic Fracturing And Reservoir Simulation Modeling Of Enhanced Geothermal System Optimization For Economical Energy Production, Jerjes W Porlles Hurtado
Theses and Dissertations
Enhanced Geothermal Systems (EGS) have the potential for sustainable energy production but require large upfront expenditures and strategic development to be profitable. To reduce costs and increase energy output, this work integrates hydraulic fracturing (HF) modeling with reservoir simulation optimization to improve EGS design and operating efficiency. EGS uses hot, dry rock geothermal resources, mostly crystalline and sedimentary rocks with poor permeability. Shear stimulation is preferred over hydraulic fracturing in EGS reservoirs, but a comprehensive HF strategy is still lacking. This study fills this gap by evaluating hydraulic fracturing and proppant use for optimal EGS development. Hydraulic fracturing in EGS …
The Catalytic Conversion Of Corn Stover Sugars Into Lactic Acid, Ahmed Essam
The Catalytic Conversion Of Corn Stover Sugars Into Lactic Acid, Ahmed Essam
Theses and Dissertations
The rising global demand for addressing global warming necessitates the development of renewable-based alternatives to current fossil fuel-based chemicals and fuels. Lignocellulosic biomass is the most abundant energy source following fossil fuels. As a result, agricultural residues such as corn stover have attracted substantial interest for utilization as a potential feedstock for renewable chemicals.Previous research work at the University of North Dakota showed promising results in converting corn stover sugars into chemical building blocks. The most crucial of these chemicals is lactic acid, which can be used in multiple applications including food, pharmaceuticals, and biodegradable plastics. Traditionally, lactic acid is …
Directivity Improvement Of A Broad-Beam Patch Antenna By Means Of A Flat Metamaterial Lens, Tyler Midas
Directivity Improvement Of A Broad-Beam Patch Antenna By Means Of A Flat Metamaterial Lens, Tyler Midas
Theses and Dissertations
This thesis demonstrates the development of a flat metamaterial lens intended to enhance antenna directivity in RF applications. Development and evaluation was performed with ANSYS HFSS, where a theoretical convex lens model was developed and used as a basis for unit cell refractive indices of the metamaterial lens. The unit cell demonstrated in this study leverages the properties of a nested split-ring resonator merged with a center column. Adjusting the rings allow for refractive index optimization and effective beam focusing. The work presented also provides a 2x2 antenna array with a feed network, which enables the future work of bench …
Elementary Teacher Instructional Self-Efficacy In Leader In Me Lighthouse Schools, Lara Storm
Elementary Teacher Instructional Self-Efficacy In Leader In Me Lighthouse Schools, Lara Storm
Theses and Dissertations
This study is a secondary data comparative analysis using the Leader in Me Measurable Results Assessment (MRA) to examine whether teachers at Leader in Me Lighthouse certified schools have a greater degree of instructional self-efficacy than teachers at non-Lighthouse certified Leader in Me schools. Literature shows that students in classes with teachers that have a higher degree of instructional self-efficacy experience higher student achievement and a more supportive classroom climate. In addition, those teachers with higher efficacy experience lower levels of stress and burnout and are more engaged in professional development. The guiding notion of this investigation is that implementing …
Evaluation Of Hydrogen Storage Potential In Depelted Hydrocarbon Formations: A Case Study Of The Middle Bakken Member In The Antelope Field, Williston Basin, North Dakota, Grace Oluwakemisola Taiwo
Evaluation Of Hydrogen Storage Potential In Depelted Hydrocarbon Formations: A Case Study Of The Middle Bakken Member In The Antelope Field, Williston Basin, North Dakota, Grace Oluwakemisola Taiwo
Theses and Dissertations
Hydrogen, as a low-emission fuel and energy carrier, plays a crucial role in stabilizing renewable energy variability amid global decarbonization efforts. Subsurface storage, uniquely secure against threats such as severe weather, military conflicts, fires, and acts of terrorism, is critical for large-scale hydrogen applications and addressing the intermittency of renewable resources. North Dakota, represents a classic example of a state where reliance on fossil fuels drives significant greenhouse gas emissions. The state also hosts the Bakken Formation, an important hydrocarbon formation where depleted or nearly depleted wells exacerbate environmental challenges through potential fugitive emissions. This study therefore investigates the feasibility …
Development Of Fluorescent-Based Nanoparticles For Bioimaging, Gene Regulation Expression, And Photo-Induced Synergistic Cancer Therapy, Di Sun
Theses and Dissertations
Fluorescent-based nanoparticles have been applied to a broad range of biological applications, as discussed in this dissertation, including bioimaging, gene regulation expression, and photo-induced synergistic cancer therapy. Prior to applications, this dissertation first focused on the development and characterization of several fluorescent-based nanoparticles using different methods. These include 1) Streamlined synthesis of dual-emissive fluorescent-based silicon quantum dots (SiQDs). The SiQDs were generated as a promising, non-toxic labeling tool for bioimaging of a variety of cell types. both in visible and near-infrared (NIR) ranges. 2) Polymer-based nanoparticles - Polymer dots (Pdots) with a strong NIR fluorescence. The Pdots were functionalized as …
Development, Characterization, And Application Of Nanomaterials For Target Detection And Therapeutic Study, Yingfen Wu
Development, Characterization, And Application Of Nanomaterials For Target Detection And Therapeutic Study, Yingfen Wu
Theses and Dissertations
Nanomaterials have emerged as a pivotal area of research in chemistry, driven by their unique properties that make them suitable for both industrial and biomedical applications. Among nanomaterials, nanozyme is a series of nanomaterials with enzyme-mimetic activities that can proceed with the catalytic reactions of natural enzymes, conferring significant potential for their use in various biomedical applications. Herein, we describe three types of nanomaterials products with distinct properties and applications: 1) Fe³⁺-doped graphene quantum dots (GQDs) for sensitive H₂O₂ detection; 2) ratiometric fluorescent nanoprobes based on near-infrared (NIR) semiconducting polymer dots for label-free detection of dopamine; and 3) Multifunctional near …
Investigation Of Gas Injection Eor In Conventional And Unconventional Reservoirs Based On Laboratory Experiments And Field Pilot Tests, Jin Zhao
Theses and Dissertations
Currently, fossil fuels (including oil, natural gas, and coal) are still the dominant energy sources in the United States. However, their extraction and utilization generate a significant volume of carbon dioxide (CO2) and associated gases, such as methane (CH4), ethane (C2H6), propane (C3H8), etc. Injecting these gases back into deep oil reservoirs offers a practical means to enhance oil recovery while reducing air pollution. The target formations are usually characterized by good porosity and permeability to ensure sufficient injectivity and storage capacity. However, recent unconventional reservoir development indicated that tight formations could also be potential targets for enhanced oil recovery …
Soil Biogeography And Community Assembly In Polar Regions, Jesse Jorna
Soil Biogeography And Community Assembly In Polar Regions, Jesse Jorna
Theses and Dissertations
The polar regions provide community ecologists with natural microcosms, that include reduced species diversity, steep environmental gradients and limited human perturbance. Soil biodiversity in the polar regions is poorly understood, and the driving forces behind community compositions can range in scale from glacial forces 20,000 years ago to the impact of a researcher's footstep. Here, we present the results of an investigation of the driving factors behind biodiversity in Arctic and Antarctic soils, with specific attention to the role of community assembly processes. We suggest a framework for investigating the effects of inter-bacterial community processes like facilitation and argue for …
Capturing Creativity: An Exploration Of The Positive Impact Of Art Integration In Elementary Education, Christina Zander
Capturing Creativity: An Exploration Of The Positive Impact Of Art Integration In Elementary Education, Christina Zander
Theses and Dissertations
My thesis focuses on the necessity of including art in education and the positive impact integrating art has on students mentally and academically. Over the past 2 years, I have seen the major impact integrating art has on students and how essential it is to keep creativity in the classroom. My research explains how incorporating art helps increase both student engagement and retention of concepts. I have also studied how integrating art with mindfulness can help students develop essential SEL skills including emotion management. My research expands on how utilizing art allows individuals and students to better cope with challenges …
Human-Bear Conflict In North America (1880-2020): A Comprehensive Analysis Of Patterns, Outcomes And Interactions, Cody Robert Miller
Human-Bear Conflict In North America (1880-2020): A Comprehensive Analysis Of Patterns, Outcomes And Interactions, Cody Robert Miller
Theses and Dissertations
Human-bear (Ursus spp.) conflict (HBC) is an important issue facing wildlife managers across North America. It is essential that we understand the factors associated with HBCs in North America so that wildlife managers can make appropriate, science-based recommendations about how to avoid, and if necessary, survive such incidents. To that end, we present this comprehensive analysis of > 2,100 HBCs in the United States and Canada, ranging from 1880 to the present. This analysis includes the three native North American bear species: black bears (Ursus americanus), grizzly bears (U. arctos), and polar bears (U. maritimus) and assesses the role that twelve …
Enhancing Muscle Health And Modulating Immune Response With Galectin-1 In Lgmd2b/R2 Models, Stefannia Esparza Pulido
Enhancing Muscle Health And Modulating Immune Response With Galectin-1 In Lgmd2b/R2 Models, Stefannia Esparza Pulido
Theses and Dissertations
Limb-Girdle Muscular Dystrophy Type 2B/R2 (LGMD2B/R2) is a type of dysferlinopathy, a progressive muscle-wasting disorder caused by mutations in the dysferlin gene. Hallmarks of the disease include chronic inflammation, impaired muscle regeneration, and eventual muscle degeneration. Currently, no FDA-approved therapies are available for dysferlinopathies. Recombinant human Galectin-1 (rHsGal-1) has shown multiple roles in maintaining skeletal muscle homeostasis, promoting muscle repair, enhancing myogenesis, and modulating inflammation by downregulating the NF-κB pathway. The ability of rHsGal-1 to modulate the immune response is particularly promising for therapeutic applications in patients with LGMD2B/R2. In this study, we evaluated the effects of rHsGal-1 in a …
Effect Of Roadway Lighting On Safety In Utah, Samuel Lewis Runyan
Effect Of Roadway Lighting On Safety In Utah, Samuel Lewis Runyan
Theses and Dissertations
A significant portion of severe crashes and severe crashes involving vulnerable road users, 29 percent and 39 percent respectively, occur at night in Utah, despite roughly only 25 percent of traffic occurring at night. Nighttime crash causes are less understood than daytime crashes as there are fewer nighttime crashes, but it is generally assumed that increasing street lighting can help mitigate these crashes. To test this assumption, the Utah Department of Transportation was interested in developing Crash Modification Factors (CMFs) specific to the state of Utah which correlate the quantity and quality of light to crash outcomes, to observe how …
Aircraft Control, Collision Avoidance, And Remote Autonomy In Scenarios With Ground Radar Information, Jaron Charles Ellingson
Aircraft Control, Collision Avoidance, And Remote Autonomy In Scenarios With Ground Radar Information, Jaron Charles Ellingson
Theses and Dissertations
Unmanned aircraft systems (UAS) have become integral to various modern applications, including package delivery, security, medicine, and recreation. The autonomous operation of UAS significantly enhances their utility by improving performance and reducing operator workload, enabling collaborative missions such as boundary detection, border protection, and target tracking. To ensure safe integration of UAS, more work needs to be done in the areas of control, estimation, collision avoidance, path planning, hardware implementation, and autonomous practices in general. For this dissertation we chose to focus on the critical areas of control, collision avoidance, and remote autonomy. Our research is motivated by the need …
Lost, Or Found? Seeking And Preserving The Education Of Artisanal Arts, Jennie Doezie
Lost, Or Found? Seeking And Preserving The Education Of Artisanal Arts, Jennie Doezie
Theses and Dissertations
Crafts and the artisanal arts have a complex relationship with art and art education. Nevertheless, hands-on crafts have an important and often overlooked contribution to visual art education. In addition to their value as cultural icons, the artisanal arts can contribute to cognitive development, emotional well-being, and mental health. The practice of a craft can balance some of the negative effects of 21st century screen culture. This thesis explores the following regarding crafts education: its value, its relationship to traditional art education, and its future potential. In addition to the traditional elements of literature review and research methodology, this thesis …
Implementing The Safe System Approach At Intersections In Utah, Ian Patrick Macgregor
Implementing The Safe System Approach At Intersections In Utah, Ian Patrick Macgregor
Theses and Dissertations
This thesis investigates the principles and elements of the Safe System Approach, a new paradigm in roadway safety. A compendium of practice was created to determine recommendations on how to implement the Safe System Approach at intersections and observe how other jurisdictions are implementing it. Several strategies identified include the Safe Systems at Intersections (SSI) methodology, Safe System Alignment Frameworks, Vision Zero communities, incorporating the Safe System Approach into the Strategic Highway Safety Plan (SHSP) or Highway Safety Improvement Program (HSIP), mandating the Safe System Approach be considered in all projects, and the Organizational Safety Culture Self-Assessment. These policies do …
Barbie, Taylor Michelle Gale
Barbie, Taylor Michelle Gale
Theses and Dissertations
The stereotypes placed over men and women throughout various forms of media, including film and TV, song, printed media, and even through objects like toys, have a large impact on society as a whole. Kumari and Joshi (2015) explain that media plays an important role in sharing information concerning what deems to be the fabric of contemporary culture, which can aid in changing, or perpetuating long standing societal norms. This study identifies how Greta Gerwig's Barbie (2023) approaches the themes of the portrayal of women in the media through the Barbie film, examining themes such as objectification, self-objectification, and the …
Computational Study Of The Evolution Of The Grain Boundary Network During Anisotropic Grain Growth, Jose Nino
Computational Study Of The Evolution Of The Grain Boundary Network During Anisotropic Grain Growth, Jose Nino
Theses and Dissertations
The grain boundary network (GBN) of polycrystalline materials changes during grain growth, affecting the material's properties. This research presents the results of fully anisotropic grain growth simulations. We perform simulations using three GB energy functions: an energy function that considers a GB's 5 degrees of freedom, the Read-Shockley model, and isotropic. We analyze the impact of these energy functions on the morphological evolution and various microstructural statistics, such as crystallographic texture and triple junction distribution. The results demonstrate that while individual grain evolution varies with GB energy function, certain microstructural statistics reach similar steady states across different models. In addition, …