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The Influence Of Commercial Salmonella Vaccination Programs On Local- And Systemic-Immune Responses And Ceca Microbiome In Egg-Type Chickens, Chrysta Noelle Beck
The Influence Of Commercial Salmonella Vaccination Programs On Local- And Systemic-Immune Responses And Ceca Microbiome In Egg-Type Chickens, Chrysta Noelle Beck
Graduate Theses and Dissertations
Salmonella vaccination is a widely accepted practice in the United States poultry industry. These vaccines stimulate a strong humoral response to Salmonella serovars and significantly reduce Salmonella load in the bird. In general, a Salmonella vaccination program for an egg-type pullet flock consists of two administrations of a live attenuated Salmonella vaccine at 1- and 6-wk-of-age followed by one administration of a Salmonella bacterin at 12-wk-of-age. Although these vaccines are regarded as effective against paratyphoid Salmonella infections, there are incidences of breakthrough Salmonella infections and severe injection site reactions after bacterin administration. Therefore, the main objective of this dissertation was …
The Effects Of Grading Equity Practices On Students: Do Student Perceptions Of And Teachers’ Exposure To Grading Equity Practices Matter?, Sarah Ruth Morris
The Effects Of Grading Equity Practices On Students: Do Student Perceptions Of And Teachers’ Exposure To Grading Equity Practices Matter?, Sarah Ruth Morris
Graduate Theses and Dissertations
This dissertation critically examines grading practices within schools, tracing the evolution from traditional to modern approaches and highlighting the social dimensions and debates surrounding grading. Through a mixed-methods study spanning three empirical chapters, it explores students' and teachers' perceptions of grading practices, the impact of professional development (PD) on teachers' approaches to grading equity, and the resultant effects on student outcomes. Chapter Two reveals students' preferences for practices that recognize effort and support academic growth, alongside a tension between Pre-AP students' resistance and the support from students under high stress. Chapter Three finds that while PD can shift teachers' views …
Effects Of Land Cover And Land Change On Monarch Butterfly Presence Across The Conus, Chris R. Burkhart
Effects Of Land Cover And Land Change On Monarch Butterfly Presence Across The Conus, Chris R. Burkhart
Graduate Theses and Dissertations
The decline of monarch butterfly populations (Danaus plexippus L.) over the past four decades, particularly in their overwintering habitats, has raised concerns about the species' conservation. Habitat loss and modification, particularly within the contiguous United States, are attributed as one of the key drivers of this decline. However, the specific impact of land use and land cover (LULC) changes on monarch distributions remains inadequately documented. This study integrates monarch observations from multiple sources spanning 2008 to 2019 with LULC data to analyze the relationship between habitat configuration and monarch presence. Using a randomized grid sampling approach, habitat configuration metrics were …
Modification Of Time-Domain Terahertz Spectroscopy System To Polarimetry Imaging System With Application To Human Breast Cancer Surgical Specimen, Nikita Gurjar
Graduate Theses and Dissertations
Breast-conserving therapy (lumpectomy) is one of the most performed breast cancer surgeries in the United States. The best outcome of lumpectomy surgery is achieved when the surgical margins are free of cancer. When remnants of cancer are detected at the surgical margins after the initial operation, a second operation will be required to remove the cancer. Unfortunately, a significant number of patients undergo breast conserving surgery (BCS) at local hospitals that do not have access to immediate on-site pathology leading to high rates of re-excision or reoperation (greater than 30%). Therefore, there is a significant need for new intraoperative technology …
The Impact Of Reactive Oxygen Species On Bactericidal Activity And Drug Resistance In Salmonella Typhimurium Upon Chlorine And Eugenol Exposure, Mohammed Aljuwayd
The Impact Of Reactive Oxygen Species On Bactericidal Activity And Drug Resistance In Salmonella Typhimurium Upon Chlorine And Eugenol Exposure, Mohammed Aljuwayd
Graduate Theses and Dissertations
Salmonella Typhimurium (S.T) is a foodborne pathogenic bacterium which causes salmonellosis in human beings. Chicken is the most common source of S.T contamination. In chapter I, I discuss the growth of the poultry industry, the role chickens play as Salmonella reservoirs, the spread of drug-resistant strains caused by chicken husbandry and antibiotic use, and how eugenol can be used in poultry feed to decrease Salmonella infections and improve intestinal health. In chapter Ⅱ, I summarize the role of reactive oxygen species (ROS) in bactericidal activity. In chapter Ⅲ, I describe the killing mechanism of sodium hypochlorite (NaOCl) and identify the …
Gan With Skip Patch Discriminator For Biological Electron Microscopy Image Generation, Nishith Ranjon Roy
Gan With Skip Patch Discriminator For Biological Electron Microscopy Image Generation, Nishith Ranjon Roy
Graduate Theses and Dissertations
GAN models have been successfully used for image generation in various sections such as real-life objects like human faces, cars, animal faces, landscapes, etc. This work focuses on biological electron microscopy (EM) image generation. Unlike other real-life objects, biological EM images are obtained through electron microscopy techniques to study biological specimens. Electron microscopy offers high resolution and magnification capabilities, making it a powerful tool for visualizing biological structures at the nanoscale. However, using GAN models for biological EM image generation poses challenges due to the complex and unique arrangements of biological structures and the sparse and asymmetrical patterns in EM …
Tissue Engineered Models Of Environmental And Metabolism-Driven Cancer-Nerve Crosstalk, Emory Gregory
Tissue Engineered Models Of Environmental And Metabolism-Driven Cancer-Nerve Crosstalk, Emory Gregory
Graduate Theses and Dissertations
Purpose: Within the last 30 years, cancer-nerve interactions have garnered attention for causing patient pain, increasing the risk of recurrence, and decreasing patient prognosis. There are 2 key forms cancer-nerve crosstalk takes: perineural invasion (PNI), in which cancer cells infiltrate nerves as a route for metastasis, and tumor innervation (TI), in which neurites penetrate solid tumors to promote tumor progression. Present in vitro models of cancer-nerve crosstalk primarily include Matrigel® mouse matrix and collagen I hydrogels; whereas collagen I hydrogels neglect tumor extracellular matrix (ECM) complexity, Matrigel® is controversial for its batch-to-batch inconsistencies and inclusion of experiment-altering growth factors. Decellularized …
Desire Lines: Reading Queerly Through The Forests Of Medieval Love Literature, Brianna Skye Oliver
Desire Lines: Reading Queerly Through The Forests Of Medieval Love Literature, Brianna Skye Oliver
Graduate Theses and Dissertations
This dissertation conducts queer eco-sensitive readings of a selection of medieval love texts in Middle English and Old French. Informed in turns by the works of feminist, queer, and ecocritical scholars, each chapter engages with a different iteration of literary queerness by bringing the representation of natural spaces and objects (especially the forest) to the fore and reading through nature depicted in the texts. The readings all share a broad goal of inviting modern audiences to play with desire and its manifestations within each text to make meaning and compel intimacy between the work and its current audience. Chapter 1 …
Development Of Iii-V And Iv Epitaxy On Sapphire Technology, Emmanuel Wangila
Development Of Iii-V And Iv Epitaxy On Sapphire Technology, Emmanuel Wangila
Graduate Theses and Dissertations
This research presents comprehensive insights into the epitaxial growth of germanium (Ge) on c-plane sapphire substrates using molecular beam epitaxy (MBE). The direct growth of Ge on sapphire typically yields three-dimensional (3D) Ge islands with diverse growth directions, multiple primary domains, and twinned crystals. However, incorporating a thin AlAs nucleation layer proves instrumental in enhancing surface and material quality. With a 10 nm AlAs layer, the achieved surface exhibits improved characteristics, including a smoother surface, single epitaxial orientation, sharper rocking curve, and a single domain. This study surpasses previous works by achieving a single primary domain and reducing twinning. Furthermore, …
Student Perceptions And Academic Performance When Taught With Multiple Active Learning Methods In A High Enrollment Undergraduate Human Physiology Course, Kate Ireton Walker
Student Perceptions And Academic Performance When Taught With Multiple Active Learning Methods In A High Enrollment Undergraduate Human Physiology Course, Kate Ireton Walker
Graduate Theses and Dissertations
When instructing very large groups of students in science, it can be difficult to engage all students in the content and measure their understanding. A major unaddressed challenge in science instruction is how specifically to design and implement strategies that engender active learning particularly in high-enrollment undergraduate courses. Active learning, which represents a diverse set of strategies, may include student engagement as part of instruction through discussions, active movement, and application (Bernstein, 2018; Cavanagh, et al. 2016; Michael, 2006 & Wilke, 2003). This study was designed to provide data addressing the gap in the literature regarding how the continual implementation …
Local And Systemic Inflammatory And Antibody Responses To Salmonella-Killed Vaccines In Egg-Type Pullets, Jossie Mair Santamaria Archbold
Local And Systemic Inflammatory And Antibody Responses To Salmonella-Killed Vaccines In Egg-Type Pullets, Jossie Mair Santamaria Archbold
Graduate Theses and Dissertations
Salmonella infection in chickens is a significant and complex challenge to manage, affecting poultry health and food safety. Vaccination against Salmonella is a promising preventative approach to control flock infection and decrease the loads of this pathogen. Vaccination strategies against Salmonella often comprise the application of live attenuated and killed (inactivated) vaccines, including inactivated autogenous vaccines. Live attenuated Salmonella vaccines stimulate both cellular and humoral immunity but can potentially return to a virulent state; meanwhile, inactivated Salmonella vaccines trigger more of a humoral response and are safer since they are entirely rendered inactive. However, there is a lack of information …
Computational Models That Exploit Spatial, Temporal, And Voltage-Current Relationships In The Electrochemical Generation-Collection Of Redox-Active Molecules, Miguel Angel Abrego Tello
Computational Models That Exploit Spatial, Temporal, And Voltage-Current Relationships In The Electrochemical Generation-Collection Of Redox-Active Molecules, Miguel Angel Abrego Tello
Graduate Theses and Dissertations
The numerical studies in this dissertation explore the application of redox cycling, an advanced electrochemical technique, for analyzing bioelectrochemical systems with a particular focus on small-volume samples and involves electrodes that can be activated to oxidize and reduce, separated by varying distances and featuring different geometries. The redox cycling approach facilitates the spatio-temporal interrogation of kinetics, mass transport, and the quantification and identification of chemical systems. We optimize a previously fabricated neural probe design on an SU-8 substrate, featuring coplanar arrays of nine microband electrodes suited for in vivo applications. Through comprehensive in situ and in silico redox cycling studies …
Use Of Herbicides Coated Onto Fertilizer And Applied Over-The-Top Of Cotton, Summer Linn
Use Of Herbicides Coated Onto Fertilizer And Applied Over-The-Top Of Cotton, Summer Linn
Graduate Theses and Dissertations
Cotton (Gossypium hirsutum L.) production faces numerous challenges, many related to weed management. A herbicide application method that focuses on combing resources that producers already have access to, such as herbicide-coated fertilizers, could be a practical approach for addressing late-season control of Palmer amaranth (Amaranthus palmeri S. Wats) and other problematic weed species. Two main factors would potentially impact the efficiency of utilizing this method: cotton tolerance to the application and weed control provided by the herbicide-coated fertilizers. Some considerations could affect the efficacy of these applications, such as when the treatments are applied and when they are activated by …
Cover-Crop Effects On Near-Surface Soil Properties Over Time In The Lower Mississippi River Valley, Cooper Fanning
Cover-Crop Effects On Near-Surface Soil Properties Over Time In The Lower Mississippi River Valley, Cooper Fanning
Graduate Theses and Dissertations
Human population growth and climate change are present stressors that continue to put pressure on current agricultural production systems, where typical row-crop agricultural practices can negatively impact soil health. Extensive use of cover crops (CC) to increase soil health remains widely unrealized. Soil health in Arkansas is a major concern for sustaining agricultural output, therefore research into CC implementation across Arkansas to maintain or improve soil health is needed. The objective of this study was to evaluate the effects of CC (i.e., with and without CC) across various physical, hydraulic, biological, and chemical soil indicators in the Lower Mississippi River …
Feasibility Study For The Application Of A Solar Powered Absorption Chilling System For Cooling Poultry Houses In Northwest Arkansas, Matthew James Kelly
Feasibility Study For The Application Of A Solar Powered Absorption Chilling System For Cooling Poultry Houses In Northwest Arkansas, Matthew James Kelly
Graduate Theses and Dissertations
This paper investigates the economic feasibility of utilizing a solar-powered absorption chiller to provide cooling for poultry houses in northwest Arkansas. An existing thermodynamic model of a poultry house was modified to account for cooling. A simulation was performed using actual weather data from Fayetteville, Arkansas for 26 flocks of broilers at four cooling capacities for the 2020, 2021, and 2022 calendar years. Based on the simulation, the savings from reduced electricity use for ventilation and the cost of the required absorption chiller and solar thermal array for an 8-house farm were calculated. While providing cooling was found to reduce …
Approaches To Controlling Palmer Amaranth And Its Interference In Furrow-Irrigated Rice, Tanner Austin King
Approaches To Controlling Palmer Amaranth And Its Interference In Furrow-Irrigated Rice, Tanner Austin King
Graduate Theses and Dissertations
Palmer amaranth (Amaranthus palmeri S. Wats) is the most troublesome and problematic weed in most mid-southern U.S. row crop production systems. With the increased adoption of furrow-irrigated rice (Oryza sativa L.), there is a greater occurrence of Palmer amaranth due to sustained moist conditions allowing continual emergence of the weed throughout the growing season. Palmer amaranth has previously been shown to negatively affect crop yields when left unmanaged. Therefore, there is a high potential for rice yield loss due to the weed’s ability to emerge over an extended period and interfere with crop development. However, there is a lack of …
Real-Time Delphi Study: Perspectives Of An Autistic Panel On Independent Living, Celeste Michaud
Real-Time Delphi Study: Perspectives Of An Autistic Panel On Independent Living, Celeste Michaud
Graduate Theses and Dissertations
The shift from institutional living to community integration for people with disabilities, including autistic people, has been significantly influenced by legislative measures and advocacy. Despite these efforts, autistic youth and adults still experience a unique transition to independent living compared to their peers with other disabilities. Studies have reported that autistic adults are more likely to remain in the family home and less likely to live independently post-high school (Anderson et al., 2014). Existing literature and legislation illustrate a fragmented approach to defining and measuring independent living for autistic adults, often driven by non-autistic perspectives (Cribb et al., 2019). This …
Three Essays Examining Technology Adoption And The Role Of Physicians In Improving Efficiency, Quality And Reducing Risk In Healthcare Supply Chains, Rajib Dutta
Graduate Theses and Dissertations
Hospitals across the USA are operating under extreme financial stress and looking for opportunities to improve financial stability and maximize bottom-line savings. As supply chain function accounts for up to 40 percent of total hospital operating cost, hospital leaders are increasingly viewing the healthcare supply chain as a potential area for efficiency gain and cost reduction. The recipe for effective and efficient care delivery is to synchronize the flow of supplies with patient needs by integrating products, processes, and information while complying with government regulations. Therefore, proper management of inventory, role of government policies in shaping hospital strategies, adoption of …
Partial Immunity To Mycoplasma Gallisepticum After An Initial Infection Is Long-Lasting And Reduces Transmission In Flocks Of Canaries, Madeline Sudnick
Partial Immunity To Mycoplasma Gallisepticum After An Initial Infection Is Long-Lasting And Reduces Transmission In Flocks Of Canaries, Madeline Sudnick
Graduate Theses and Dissertations
Pathology during a second infection can be influenced by immunity and an increase in resistance or tolerance of individuals. Population-level differences in the ability to maintain immunity can lead to contrasting survival outcomes between groups and determine how future outbreaks will spread. However, long term wildlife disease surveillance can be challenging due to lack of infrastructure and host-pathogen specific tests. Calculating disease transmission likelihood requires understanding individual-level heterogeneity in pathology and behavior, and there is limited knowledge in understanding how populations in different stages of an epidemic will transmit disease. In Chapter I, we aim to help fill a gap …
Play Therapists Attitudes, Knowledge, And Skills In Identifying Disordered Eating In Children And Adolescents., Hailey Thomas
Play Therapists Attitudes, Knowledge, And Skills In Identifying Disordered Eating In Children And Adolescents., Hailey Thomas
Graduate Theses and Dissertations
The prevalence of disordered eating among children and adolescents has been steadily increasing, posing an increase in the need for treatment. Recognizing and addressing disordered eating in childhood and adolescence is critical to fostering a healthy relationship with food and body image and ensuring the overall well-being of youth. Play has long been considered an important factor in understanding children's lives and experiences and is the recommended counseling approach for children and adolescents (Landreth, 2012). Play therapy is grounded in the fundamental understanding that play is children's and adolescents' natural mode of expression, where toys are their words, and play …
The Impact Of Ectopic Expression Of A Plant Elicitor Peptide In Bacillus Subtilis On Nematode Resistance In Soybean Through Seed Treatment, Abeer Alnasrawi
The Impact Of Ectopic Expression Of A Plant Elicitor Peptide In Bacillus Subtilis On Nematode Resistance In Soybean Through Seed Treatment, Abeer Alnasrawi
Graduate Theses and Dissertations
Soybean (Glycine max) is the most beneficial legume crop because it is a source of protein as well as oil for humans and livestock. Soybean is the second most planted crop in the United States following corn and it is also the fourth planted crop worldwide. However, the soybean cyst nematode (Heterodera glycines, SCN) is the most damaging pest of soybean in the United States, accounting for more than twice as much yield loss as the following cause of yield loss in soybean. Therefore, there is a pressing need to develop alternative management strategies to control SCN infection in soybeans. …
Motives For And Consequences Of Deception In Romantic Relationships, Breanna De Leeuw
Motives For And Consequences Of Deception In Romantic Relationships, Breanna De Leeuw
Graduate Theses and Dissertations
The goals of this study are twofold. First, I examined the influence of sex, relational intimacy, and face concerns on deploying deceptive communication within romantic relationships. Second, I investigated the impact of deceptive communication on relational commitment and relationship satisfaction. Two hundred twenty-two college-aged students completed self-report measures assessing the variables of interest. Results demonstrated that men and women deceive their romantic relationship partners at similar rates; however, deception is differentially motivated across the sexes. In addition, results indicated that relational intimacy was negatively associated with the frequency of deceit, although relational intimacy was not significantly associated with specific motives …
What Is A Person? How Does One Become A Morally Good Person? The Intuitive View!, Tancredo Tivane
What Is A Person? How Does One Become A Morally Good Person? The Intuitive View!, Tancredo Tivane
Graduate Theses and Dissertations
This thesis centers around two philosophical problems: the concept of a person and the process by which one becomes a morally good person. Drawing on the works of philosophers such as Harry Frankfurt, Strawson, and A.J. Ayer, it begins with an inquiry into what it means to be a person. It argues that while humanhood, with its rational capacities, is a contingent rather than a necessary condition, it can serve as an accurate predictor of personhood. The thesis posits that personhood is an achievement rather than an inherent state, facilitated by interactions within a social framework that refine these rational …
Cancer Heterogeneity And Mitochondrial-Targeted Therapies In Cancer Cachexia, Francielly Morena Clark
Cancer Heterogeneity And Mitochondrial-Targeted Therapies In Cancer Cachexia, Francielly Morena Clark
Graduate Theses and Dissertations
Cancer Cachexia (CC) is a multifactorial and complex syndrome affecting up to 80% of cancer patients and contributing to approximately 40% of cancer-related deaths. Given its relationship with patients' quality of life and prognosis, there has been increasing emphasis on understanding the underlying mechanisms of CC using pre-clinical models. However, the mechanisms of cachexia vary depending on several factors, including tumor type, model, and biological variables such as sex. RNA-sequencing technology is a crucial tool for investigating CC heterogeneity, enabling the analysis of the transcriptome across different models, conditions, and sexes using publicly available data. Aim 1 of this dissertation …
Optimization Of And Mechanistic Insights Into Photocatalytic And Non-Thermal Plasma Degradation Of Organic Pollutants For Sustainable Wastewater Treatment, Yiting Xiao
Graduate Theses and Dissertations
Water pollution by organic pollutants poses a significant environmental threat, necessitating the development of advanced treatment technologies to ensure sustainable and efficient remediation. This dissertation explored innovative approaches to enhance the degradation of organic pollutants through the integration of photocatalytic and plasma-assisted systems, with a focus on optimizing these processes using methodologies ranging from response surface methodology (RSM) to advanced machine learning techniques. The first part of the dissertation investigated the degradation of organic pollutants in flocculated liquid digestate using photocatalytic titanate nanofibers (TNFs) synthesized via a hydrothermal method. This study represents the first application of TNFs, with a bandgap …
L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile, Danielle M. Maynard
L-Arabinose Induced Overexpression For Crystallographic Analysis Of The Spoiie Protein From Clostridioides Difficile, Danielle M. Maynard
Graduate Theses and Dissertations
The SpoIIE protein plays a crucial role in the sporulation process of Clostridioides difficile, a pathogen responsible for severe gastrointestinal diseases. Understanding the structural and functional aspects of SpoIIE is pivotal for deciphering its role in sporulation and exploring its potential as a therapeutic target. This study investigates the impact of varying concentrations of L-arabinose on the overexpression of SpoIIE in C. difficile, aiming to optimize protein yield and purity for subsequent crystallization and structural determination via X-ray crystallography. Using a recombinant expression system in Escherichia coli, different concentrations of L-arabinose were employed to induce SpoIIE overexpression. Protein purification was …
In The Performance Of A Lifetime: Pepper Plinkett, Lily Camille Hollinden
In The Performance Of A Lifetime: Pepper Plinkett, Lily Camille Hollinden
Graduate Theses and Dissertations
This narrative depicts a caricature of the human experience through the eyes of my alter- ego character, Pepper Plinkett. Pepper is a symbol of my personal philosophies of what it means to be human, and serves as a protagonist and guide through an infinite, ambiguous natural world. This exhibition is a celebration of the vibrancy, curiosity, and ridiculousness of a lifetime. The uniqueness of humor as a specifically human trait and its use as a tool of communication, particularly in expressing authenticity, is the driving force behind my use of clowns in my work. I take an absurdist approach to …
Fostering Community Among Women Mountain Bikers, Samantha Wischmeyer
Fostering Community Among Women Mountain Bikers, Samantha Wischmeyer
Graduate Theses and Dissertations
Although women have shown growing interest in mountain biking in recent years, a disproportionate number of men and women participate, with women representing only one-third of overall riders (The National Sporting Goods Association, 2023). Many women describe feeling insecure and intimidated by what they perceive to be the traditional mountain biking culture (Bordelon & Ferreira, 2019; Carpiet, 2014; Huybers-Withers, 2015; McCormack, 2020; Nash & Moore, 2021). This research is concerned with fostering a sense of belonging and opportunities for community-building to reduce barriers of entry in mountain biking for self-identified women in Northwest Arkansas. Northwest Arkansas has a highly active …
Dna/Carbon Nanotube Hybrid Structure And Their Translocation Through A Nanochannel, Daniel Christoffel Viljoen
Dna/Carbon Nanotube Hybrid Structure And Their Translocation Through A Nanochannel, Daniel Christoffel Viljoen
Graduate Theses and Dissertations
DNA sequencing is of major importance as it is used in fields such as species differentiation, personalized medicine and food safety. Currently sequencing by synthesis is the most popular commercial method of sequencing DNA while Oxford nanopore’s protein based nanopores are the only portable commercial method. Current nanopore based devices have three main issues: Spacial resolution, translocation rate versus sensor strength and dealing with the persistence length of ssDNA. This thesis contributes to ongoing research that aims to create a nanochannel with integrated sensor based sequencing device. The project has two main objectives. The first objective is to improve the …
Empower Voices, Enhance Dignity A Study On Menstrual Hygiene Management Among Internally Displaced Menstruators In Wassa Idp Camp, Abuja, Fct., Shalom Joro Yabilsu
Empower Voices, Enhance Dignity A Study On Menstrual Hygiene Management Among Internally Displaced Menstruators In Wassa Idp Camp, Abuja, Fct., Shalom Joro Yabilsu
Graduate Theses and Dissertations
Nigeria’s humanitarian crisis has led to prolonged internal displacement, with many people forced to flee their homes due to armed conflict and communal violence. Internally Displaced Persons (IDPs) number in the millions and face numerous challenges that leave them vulnerable. Among those affected are menstruators, who face unique challenges related to managing menstruation in these dire circumstances. Despite significant research on various aspects of life within Internally Displaced Persons (IDP) camps, there remains a notable gap in addressing menstrual hygiene management (MHM) in this space. This study focuses on understanding and enhancing health literacy of MHM through a life-centered embodied …