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Revealing The Effects Of Climate Change And Fungicides On Soil Microbial Communities In The Lower Rio Grande Valley, Texas, Armida Rivera
Revealing The Effects Of Climate Change And Fungicides On Soil Microbial Communities In The Lower Rio Grande Valley, Texas, Armida Rivera
Theses and Dissertations
Fungicide applications are effective to prevent fungal pathogens that are known to cause crop damage and decrease yields. However, these pesticides can exert toxic or inhibitory effects on non-targeted organisms such as soil microbial communities. In addition, it is unknown to what extent shifts in temperature and soil moisture resulting from global climate change, alter the activities of non-targeted soil organisms. The aim of this study was to evaluate soil biological parameters such as soil respiration and enzyme activities involved in the cycling of carbon, nitrogen, and phosphorous (Beta-glucosidase, Fluorescein Diacetate (FDA) Hydrolysis, urease, alkaline phosphatase, acid phosphatase, and N-acetyl-Beta-glucosaminidase) …
Could Cultures Determine The Course Of Epidemics And Explain Waves Of Covid-19?, Md Salman Rahman
Could Cultures Determine The Course Of Epidemics And Explain Waves Of Covid-19?, Md Salman Rahman
Theses and Dissertations
Coronavirus Disease (COVID-19), caused by the SARS-CoV-2 virus, is an infectious disease that quickly became a pandemic spreading with different patterns in each country. Travel bans, lockdowns, social distancing, and non-essential business closures caused significant economic disruptions and stalled growth worldwide in the pandemic’s first year. In almost every country, public health officials forced and/or encouraged Nonpharmaceutical Interventions (NPIs) such as contact tracing, social distancing, masks, and quarantine. Human behavioral decision-making regarding social isolation significantly impedes global success in containing the pandemic. This thesis focuses on human behaviors and cultures related to the decision-making of social isolation during the pandemic. …
Growth And Reproduction In Gulf Of Mexico Black Corals (Antipatharians) In Field And Laboratory Studies, Victoria E. Salinas
Growth And Reproduction In Gulf Of Mexico Black Corals (Antipatharians) In Field And Laboratory Studies, Victoria E. Salinas
Theses and Dissertations
Black corals provide an important ecosystem of marine life and are found throughout all the oceans of the world at depths between 2 and 8,600 m. However, little is understood about their life history and the factors that control the distribution of black corals, particularly in the Gulf of Mexico (GoM). Given the impacts of the Deepwater Horizon oil spill on soft corals (e.g., black corals and octocorals) in the GoM, studies of their growth and reproductive biology in both natural and aquaculture environments are crucial for restoration efforts. The objectives of this study were to examine reproductive processes, compare …
Examination Of The Realized Host Range Of North American Lacebug (Gargaphia Arizonica Drake & Carvalho) And Texas False Potato Beetle (Leptinotarsa Texana Schaeffer) As A Potential Biocontrol Agents For Silverleaf Nightshade (Solanum Elaeagnifoli Cav.), Samikshya Subedi
Theses and Dissertations
Silverleaf nightshade (Solanum elaeagnifolium Cav.) is a perennial forb native to South Texas and Central and South America, but it has become a serious agricultural weed across the world. Because silverleaf nightshade (SLN) is difficult and expensive to manage using chemical and mechanical controls, there is growing attention and research focused on biological control options. In this project, we used both field and laboratory studies to examine the suitability of two North American insects, namely North American lacebug (Gargaphia arizonica Drake & Carvalho) and Texas false potato beetle (Leptinotarsa texana Schaeffer) as prospective biological control agents for …
Network Analysis Of Scientific Research In The Gulf Of Mexico, Juliet S. Vallejo
Network Analysis Of Scientific Research In The Gulf Of Mexico, Juliet S. Vallejo
Theses and Dissertations
The Gulf of Mexico ecosystem represents a significant management challenge in its 3,423-mile coastline and transnational regulatory setting, along five states from the United States, six states from Mexico, and Cuba which borders the southeastern quadrant. Providing various resources to the regional economies, the continued success of these resources depends on the collaboration among transnational participants in bringing together complementary skills and multidisciplinary approaches to producing, circulating, and utilizing scientific knowledge. Using bibliometric analysis of Gulf of Mexico-related published research over 18 years from 2000 to 2018 allows for identifying organizations, their connections, and trends in the production of scientific …
Neural Networks And Stochastic Differential Equations, Stephanie L. Flores
Neural Networks And Stochastic Differential Equations, Stephanie L. Flores
Theses and Dissertations
Influenced by the seminal work, “Physics Informed Neural Networks” by Raissi et al., 2017, there has been a growing interest in solving and parameter estimation of Nonlinear Partial Differential Equations (PDE) with Deep Neural networks in recent years. In fact, this has broadened the pathways and shed light on deep learning of stochastic differential equations (SDE) and stochastic PDE’s (SPDE).In this work, we intend to investigate the current approaches of solving and parameter estimation of the SDE/SPDE with deep neural networks and the possibility of extending them to obtain more accurate/stable solutions with residual systems and/or generative adversarial neural networks. …
Fabrication And Characterization Of Dna Templated Electronic Nanomaterials And Their Directed Placement By Self-Assembly Of Block Copolymers, Dulashani Ruwanthika Ranasinghe Weerakkodige
Fabrication And Characterization Of Dna Templated Electronic Nanomaterials And Their Directed Placement By Self-Assembly Of Block Copolymers, Dulashani Ruwanthika Ranasinghe Weerakkodige
Theses and Dissertations
Bottom-up self-assembly has the potential to fabricate nanostructures with advanced electrical features. DNA templates have been used to enable such self-assembling methods due to their versatility and compatibility with various nanomaterials. This dissertation describes research to advance several different steps of biotemplated nanofabrication, from DNA assembly to characterization. I assembled different nanomaterials including surfactant-coated Au nanorods, DNA-linked Au nanorods and Pd nanoparticles on DNA nanotubes ~10 micrometer long, and on ~400 nm long bar-shaped DNA origami templates. I optimized seeding by changing the surfactant and magnesium ion concentrations in the seeding solution. After successful seeding, I performed electroless plating on …
La Asignación De Género De Los Préstamos En El Sureste De Tejas [The Gender Assignment Of Loans In Southeast Texas], Elsa Guadalupe Magana Orozco
La Asignación De Género De Los Préstamos En El Sureste De Tejas [The Gender Assignment Of Loans In Southeast Texas], Elsa Guadalupe Magana Orozco
Theses and Dissertations
En esta investigación se examina la asignación de género de préstamos del inglés al español en el Valle del Río Grande de Tejas basándose en 32 entrevistas sociolingüistas del Corpus bilingüe del Valle (Christoffersen y Bessett, 2019). Se han llegado a reconocer tres posibles factores que determinan la asignación de género (masculino o femenino) de los préstamos, tales como el sexo biológico, el género fonológico y el género analógico (Poplack, 1982; DuBord, 2004; Montés-Alcalá y Lapidus Shin, 2011). Los resultados muestran un total de 692 préstamos la mayoría fue asignado el género masculino un 50%, mientras 33% fue asignado el …
Financial Literacy And Consumer Well-Being: Examining The Role Of Gender Role Ideology, Lorena Garcia Ramon
Financial Literacy And Consumer Well-Being: Examining The Role Of Gender Role Ideology, Lorena Garcia Ramon
Theses and Dissertations
Financial literacy, or the ability to process economic information and make informed decisions about financial planning, wealth accumulation, debt, and pensions, has been linked to beneficial financial behaviors that support financial well-being. Despite these benefits, consumers tend to underperform in financial literacy tests with women generally faring worse than men. This dissertation draws from gender roles literature and Expectancy-Value Theory to examine how, why, and when traditional attitudes regarding societal gender roles (i.e., gender role ideology) hinder women’s financial literacy and willingness to acquire financial knowledge. Moreover, it examines how financial literacy and willingness to …
Examination Of Amphibian Community And Environmental Relationships In South Texas Using Environmental Dna (Edna), Sean Michael Collins
Examination Of Amphibian Community And Environmental Relationships In South Texas Using Environmental Dna (Edna), Sean Michael Collins
Theses and Dissertations
Developing more efficient tools to assess amphibian biodiversity and understanding what environmental variables drive amphibian biodiversity are top priorities, as amphibians are facing extinction events across the globe. Environmental DNA (eDNA) surveys are a promising new tool to asses amphibian biodiversity. Throughout the study eDNA metabarcoding along with a targeted eDNA assay and traditional survey methods were used to provide foundational information on amphibian community assemblages throughout South Texas. Water quality, habitat characteristics and soil composition data were collected and used to examine environmental relationships. eDNA metabarcoding detected significantly more amphibian taxonomic units compared to traditional survey …
Assessment Of Nitrogen-Based Fertilizer Transport And Microbial Activities In Sandy Soil Profiles In South Texas, Gladys De La Rosa
Assessment Of Nitrogen-Based Fertilizer Transport And Microbial Activities In Sandy Soil Profiles In South Texas, Gladys De La Rosa
Theses and Dissertations
Conventional farming is a common practice in Lower Rio Grande Valley (LRGV) and the application of nitrogen fertilizer is essential for plant growth and support. However, managing the rate of nitrogen that is applied can benefit farmers financially and reduce nitrate leaching that can have an adverse effect on the local environment and aquatic systems, e.g., rivers and estuaries. Sandy soils are more vulnerable to water infiltration due to the large proportion of macropores. This study aims to (i) assess how nitrate from a variety of fertilizers (i.e., synthetic and organic) distributes on the top 60 cm layer of a …
From Nepantla To Aztlan: Testimonios Of Faculty Mothers Of Color With Disabilities, Maria Bridges
From Nepantla To Aztlan: Testimonios Of Faculty Mothers Of Color With Disabilities, Maria Bridges
Theses and Dissertations
From Nepantla to Aztlan: This dissertation sheds light on the supports and barriers that tenured/tenure-track Faculty Mothers of Color with Disabilities experience/d in their careers as students and faculty. Drawing from Indigenous methodologies (Relationality, Decoloniality, and Autoethnography), Liberation Psychology (Decolonial Designs, Conscientização, and Psicología social de la liberación), and Critical Theories (Latina Critical Theory, Pedagogies of the Home, Autohistoria-teoría and Disability Critical Theory), the researcher uses testimonios/pláticas as a method of inquiry to uncover the experiences of eight Nepantleras, Faculty Mothers of Color with Disabilities. The researcher initially hypothesized that she would find supports and barriers that fell into 4 …
Bildung And Flânerie: Aesthetics, Genre, And Modes Of Development In The Moviegoer, Sean P. Phillips
Bildung And Flânerie: Aesthetics, Genre, And Modes Of Development In The Moviegoer, Sean P. Phillips
Theses and Dissertations
My thesis frames Walker Percy's The Moviegoer (1961) as a novel that pits the fading tradition of the Bildungsroman, aligned with what its protagonist calls the "vertical" throughout the text, against the supposed alternative of "the search", aligned with horizontal wandering. As the vast changes of modernity, namely technology and industrialization, transformed Western society throughout the nineteenth and twentieth century, many novelists began to see the Bildungsideal as incompatible with their new world. Walker Percy's novel begins with a similar conclusion, and I track how The Moviegoer engages with the Bildungsideal and its supposed failure to sustain itself into the …
The Role Of Nest Location On The Reproductive Success Of Piping Plovers Breeding At Rockaway Beach, New York, Clara I.D. Arndtsen
The Role Of Nest Location On The Reproductive Success Of Piping Plovers Breeding At Rockaway Beach, New York, Clara I.D. Arndtsen
Theses and Dissertations
The study’s goal was to learn what aspects of the piping plover experience affect reproductive outcomes at Rockaway Beach Endangered Species Nesting Area. Nest location was found to help predict reproductive success. Nests further from American oystercatcher nests were likely to fledge more chicks. Reproductive success was low in 2021.
Gaze In Cats And Dogs, Michael Bogese
Gaze In Cats And Dogs, Michael Bogese
Theses and Dissertations
Domestic dogs (Canis lupus familiaris) developed many behaviors across domestication, one example being gaze behavior. Gaze is the crux of other behaviors that make dogs unique in human-animal dyads, including lookbacks, gaze-following, and participation in an oxytocin feedback loop. Gaze behavior may have been motivated and sustained by evergreen cooperative relationships between dogs and humans (e.g., hunting, service roles). One way to confirm this relationship is to compare dogs to a domesticated species that lacks a protracted history of companionship: the domestic cat (Felis catus). In this study, we compare the gaze duration to owners of …
Problem Solving In Chelonia With Comments On Behavior And Methodological Challenges, Mal Walton
Problem Solving In Chelonia With Comments On Behavior And Methodological Challenges, Mal Walton
Theses and Dissertations
This study presented, to a variety of Chelonia species, a one-solution puzzle box problem. Of the 15 turtles tested, 11 solved the task at least once. Because studies on problem solving in reptiles, specifically Chelonia, are relatively unprecedented, we provide an examination of our methodology, along with suggestions for improvement.
Advance In Contextualizing Focal Structure Sets In Complex Network Analysis, Mustafa Alassad
Advance In Contextualizing Focal Structure Sets In Complex Network Analysis, Mustafa Alassad
Theses and Dissertations
Focal Structures are key sets of individuals who may be responsible for online socially minded events, protests, or leading citizen engagement efforts on social media networks. Discovering focal structure sets who able to promote online social campaigns is important, but complex, as they are typically active locally, globally, and acting unlike central users and influencers, focal structure sets can influence large social media networks. Researchers applied a greedy algorithm to discover focal structure sets in social media networks. However, the outcomes were lacking on the users’ activities and interests that made the analysis incomplete. In this research, I present a …
Is There A Relationship Between Religiosity And Infidelity? A Meta-Analysis, Meghan Maddock
Is There A Relationship Between Religiosity And Infidelity? A Meta-Analysis, Meghan Maddock
Theses and Dissertations
Infidelity in romantic relationships is common and has been associated with relationship dissolution and strain on individuals. Most religions teach that infidelity is harmful, and some researchers have suggested that, in the aggregate, more religious people might be less likely to report infidelity. However, research has been mixed, with some studies finding that more religious people are less likely to report infidelity, other studies finding that more religious people are more likely to report infidelity, and other studies finding no relationship. To clarify seemingly contradictory findings, I conducted a meta-analysis of the infidelity-religiosity relationship with 38 studies and a total …
Evaluating The Influence Of The Inclusion Of Liquid Brewers Yeast During Gestation On Ewe And Lamb Performance, Colostrum And Milk Quality, And Transfer Of Passive Immunity In Lambs, Julissa Navarrete
Theses and Dissertations
The microbrewery industry has experienced exponential growth since 2005. As a result, the by-products associated with this industry are becoming increasingly available. One of these by-products is liquid brewers yeast, which is produced in excess during the production of beer. For livestock producers that have access to microbreweries, a potentially economical way to feed their flock would to be repurpose the by-product that would otherwise be disposed. Similarly, microbreweries would benefit from repurposing the liquid brewers yeast as livestock feed, resulting in less waste and a more sustainable beer production system.Researchers have evaluated the effect of liquid brewers yeast supplementation …
Mestiza Teatro: An Examination On The Historical Artform Of The Latina / Chicana Theatre Collective, Cheyenne Felicitas Flores
Mestiza Teatro: An Examination On The Historical Artform Of The Latina / Chicana Theatre Collective, Cheyenne Felicitas Flores
Theses and Dissertations
Teatro groups were a form of devised theatre that came to shape after the influential times of the Chicano National Movement of the 1960s and 70s. Due to its strong relationship with the movement, teatro became the epitome of performance culture for the Chicano/Latino public. But as Chicana scholars argue, the female narrative on stage through the use of teatro was limited, static, dichotomous, and misrepresented. This confining restriction to seeing Latina performers only as mothers, strippers, maids, and other stereotypical roles is still present today. This paper aims to articulate that this gender-subordinate representation has a history in formation, …
Exercise As A Predictor Of Change In Self-Reported Marital Satisfaction And Behaviors Of Couples In Therapy, Emily J. Nelson
Exercise As A Predictor Of Change In Self-Reported Marital Satisfaction And Behaviors Of Couples In Therapy, Emily J. Nelson
Theses and Dissertations
Recent studies looking to link physical exercise with beneficial couple outcomes have had mixed results, showing benefits for females but not males in some instances, and even negative effects for males in one instance. However, these studies used self-report data for exercise which may suffer from reporting errors. This study analyzed how daily exercise, measured by participants wearing accelerometers, impacts marital satisfaction, positive behaviors, and negative behaviors in a clinical population. The data was analyzed using multilevel models to determine how time spent exercising impacted individuals and their partners in terms of relationship outcomes. Results indicated small but significant relationships …
Ethanol-Induced Impacts On Nervous System Development And Dopamine Transporter Characterization In Schmidtea Mediterranea Planaria, Brennen Covely
Ethanol-Induced Impacts On Nervous System Development And Dopamine Transporter Characterization In Schmidtea Mediterranea Planaria, Brennen Covely
Theses and Dissertations
Fetal alcohol spectrum disorders (FASD) are diagnosed in 2-5% of newborns, but the biology underlying FASD is poorly understood and challenging to study with existing model organisms. A new model for FASD research is Schmidtea mediterranea (Smed) planaria. Smed have a remarkable ability to regenerate their central nervous system (CNS), and possess a well-studied, simple genome. Previous studies have shown that ethanol exposure delays this regeneration, yet this relationship is not fully understood. Here, we show that alcohol exposure affects Smed in a dose-dependent manner, eliciting characteristic withdrawal-like behaviors and impacting cognitive function. Interestingly, prior exposure does not alter subsequent …
Atomic Layer Deposition And High Sensitivity-Low Energy Ion Scattering For The Determination Of The Surface Silanol Density On Glass And Unsupervised Exploratory Data Analysis With Summary Statistics And Other Methods, Tahereh Gholian Avval
Theses and Dissertations
With the increasing importance of hand-held devices with touch displays, the need for flat panel displays (FPDs) will likely increase in the future. Glass is the most important substrate for FPD manufacturing, where both its bulk and surface properties are critical for its performance. Many properties of the glass used in FPDs are controlled by its surface chemistry. Surface hydroxyls are the most important functional groups on a glass surface, which control processes that occurs on oxide surfaces, including wetting, adhesion, electrostatic charging and discharge, and the rate of contamination. In this dissertation, I present a new approach for determining …
Quantifying Protein Quality To Understand Protein Homeostasis, Hsien-Jung Lavender Lin
Quantifying Protein Quality To Understand Protein Homeostasis, Hsien-Jung Lavender Lin
Theses and Dissertations
Proteins are the center of all biochemical reactions in living organisms. Proteins need to be present at the right time, in the right place, with the correct concentration and have the right shape to carry their designated function. Protein homeostasis is when all proteins in the proteome are in functional balance, and such balance is maintained by synthesis, folding, and degradation machinery. When protein homeostasis is lost, organisms start to age and develop diseases. To truly unveil disease mechanisms and provide more efficient means for treatment and prevention, we need a holistic understanding of the mechanism of protein homeostasis. Currently, …
Synthesis Of Highly Conjugated Porphyrinoid Systems, Melissa Mathius
Synthesis Of Highly Conjugated Porphyrinoid Systems, Melissa Mathius
Theses and Dissertations
Porphyrins are a group of naturally occurring heterocyclic macrocycles comprising of four pyrrole subunits connected by four methine bridges. Metalloporphyrins, such as heme and chlorophyll, serve as cofactors in essential biological processes, making them one of nature’s most versatile ligands. However, porphyrinoid structures are not only of biological relevance, but they show intriguing spectroscopic properties which are commonly attributed to their [18]annulene-like delocalization pathway. Porphyrinoid systems are widely studied via modifications such as the introduction of additional conjugated units, particularly fused aromatic rings. The synthesis and subsequent modification of chrysoporphyrin and anthro[2,3-b]carbaporphyrin demonstrates that fusion of aromatic rings onto the …
Simulation And Localization Of Autonomous Underwater Vehicles Leveraging Lie Group Structure, Easton Robert Potokar
Simulation And Localization Of Autonomous Underwater Vehicles Leveraging Lie Group Structure, Easton Robert Potokar
Theses and Dissertations
Autonomous underwater vehicles (AUVs) have the potential to dramatically improve safety, quality of life and general scientific knowledge. Our coasts, lakes and rivers are filled with various forms of marine infrastructure including dams, bridges, ship hulls, communication lines, and oil rigs. Each of these structures requires regular inspection, and current methods utilize divers, which is dangerous, expensive, and time consuming. AUVs have the potential to alleviate these difficulties and enable more regular inspection of these structures. Furthermore, there are significant scientific discoveries in the fields of geology, marine biology and medicine that AUV exploration of our oceans will enable. Since …
“Give Me The Rules, I’Ll Understand Grammar Better ”: Exploring The Effectiveness Of Usage-Based Grammar Approach Through Explicit Instruction Of Adverbials, Pouya Vakili
Theses and Dissertations
The main purpose of this dissertation is to examine the (in)effectiveness of the Usage-based grammar approach through explicit instruction of adverbials in the US educational context. One area that can complicate the question of native speakers’ grammar knowledge is their awareness of grammatical terms and their functions. Along with exploring psychological and linguistic domains of language learning and instructional theories and methodologies, and also investigating grammar teaching in US schools, this dissertation intends to examine native speakers’ knowledge of grammar focusing on adverbs and adverbials as its pedagogical concern. Using a limited pool of students to examine the effectiveness of …
Genomic Analysis And Therapeutic Development Of Bacteriophages To Treat Bacterial Infections And Parasitic Infestations, Daniel W. Thompson
Genomic Analysis And Therapeutic Development Of Bacteriophages To Treat Bacterial Infections And Parasitic Infestations, Daniel W. Thompson
Theses and Dissertations
Microbiomes are an extremely vast and complex network of microorganisms. Bacteriophages are a key factor in the microbial health of an ecological system and impact the evolution of pathogenic bacterial strains. Bacteria and the phages that infect them have an intricate relationship due to the dependency on the bacterial host for phage replication, the ability of the phage to lyse and kill its host, and the horizontal gene transfer between the host and phage. This thesis aimed to understand how bacteria and the bacteriophages that infect them impact an ecological system, with a focus on disease states. By analyzing all …
The Regulation Of Oxidative Stress In Age-Related Diseases, Jesica Burkhart
The Regulation Of Oxidative Stress In Age-Related Diseases, Jesica Burkhart
Theses and Dissertations
Oxidative stress and mitochondrial dysfunction have been linked to multiple age-related diseases including common neurodegenerative diseases Alzheimer's disease (AD) and Parkinson’s disease (PD). A gene found to regulated oxidative stress and aging is a stress response gene p38 MAPK (p38K). Oxidative stress arises when the over production of reactive oxygen species (ROS) from within the cell or from environmental stimuli outweighs its clearance by antioxidants. This cascade leads to DNA damage, mitochondrial damage, and cell death. Mitochondrial dysfunction and oxidative stress are markers for biological aging. As we age mitochondrial DNA becomes more sensitive to damages and mutations. When the …
A Mixed Method Approach To Understanding Team Members' Perspectives After Receiving Problem-Solving Training And Performance Feedback, Alexander Mark Julian
A Mixed Method Approach To Understanding Team Members' Perspectives After Receiving Problem-Solving Training And Performance Feedback, Alexander Mark Julian
Theses and Dissertations
While countless studies have collected data on the effectiveness of various problem- solving models, few have attempted to identify which components of the training process are helpful to participants. Two teacher teams consisting of seven participants were trained in an adapted version of the Team-initiated Problem Solving (TIPS) model, observed each meeting, and provided performance feedback regarding how well they had adhered to the model. A mixed method approach was used to collect quantitative data in the form of the teams' adherence to the TIPS model and qualitative data once successful adherence to the model had been shown. Researchers interviewed …