Digital Commons Network^™

Acute Toxicity Of Chlorpyrifos On The Freshwater Bivalves (Unio Tigridis) And Effects On Bioindicators, Nihal Suhail Hanna, Yahya Ahmed Shekha

Baghdad Science Journal

A freshwater bivalve plays a crucial function in aquatic habitats as the filtered water and burrowing mussels mix the sediment, thus increasing oxygen content and making the ecosystem healthier. The aim of the study is to see how chlorpyrifos affects biochemical markers in freshwater mussel Unio tigridis. About 180 individuals per taxon and water samples were collected from the Qandil water resource on the Greater Zab River, Erbil Province, Iraq. Once arrived at the lab, the individuals were kept in aquaria with river water and an air-conditioned room Temperature: 25±2 and Light: 12h/12h and acclimatized to laboratory conditions for seven …

A Local History Of Horses, Caleb Nichols

Intertidal

No abstract provided.

The Influence Of Relational Frames On Climate Purchasing And Policy, Lauren Rose Hutchison

Graduate Theses/Dissertations

Evaluative conditioning refers to the effect that occurs when two stimuli are paired together, resulting in a change in the evaluation or function of one of the stimuli. Evaluative conditioning has been researched in various fields of study, such as advertisement and public administration, but synthetization efforts of these results with a relational frame theory approach, and vice versa, have been limited. This thesis used de-identified data from prior approved research to integrate and discusses two manuscripts that provide a relational frame theory perspective to evaluative conditioning effects. Study 1 extends a previous experiment by Matthews et al. (2022) through …

Population Viability Of Egyptian Tortoises: Analyzing Demographics Sensitivities And Extinction Risk In North Sinai, Basem Ahmed Rabia Motwaly

Graduate Theses/Dissertations

This study investigated the population viability of the critically endangered Egyptian Tortoise (Testudo kleinmanni) across five populations in North Sinai, Egypt. The research aimed to assess demographic sensitivities, extinction risks, and the influence of environmental variables to guide conservation strategies. Using multistate mark-recapture models within a Bayesian framework, survival, transition, and recapture probabilities were estimated across life stages, integrating site-specific environmental data such as the Normalized Difference Vegetation Index (NDVI). The analysis revealed stark contrasts between populations, with three sites demonstrating high extinction risk due to lower juvenile survival and limited recruitment. In contrast, two populations exhibited demographic …

Scent Trailing In Neonate Agkistrodon Piscivorus When Exposed To Conspecific And Heterospecific Chemical Cues, Samantha R. Grove

Graduate Theses/Dissertations

Chemosensation is central to snake ecology, playing an essential role in predator recognition, foraging success, and communication with conspecifics. In areas with cold winters, neonatal snakes often trail chemical cues from older individuals to locate communal hibernacula essential for winter survival. Juvenile Northern Cottonmouths (Agkistrodon piscivorus) form social bonds with littermates and have been shown to trail chemical cues of conspecifics in the fall. However, the effect of relatedness on trailing phenomena has not been tested. Using y-maze experiments I evaluated trailing behavior of 32 captive-born neonate Northern Cottonmouths (Agkistrodon piscivorus) to determine if (1) subjects prefer to trail siblings …

Epigenetic Mechanism Of Ebp1 In Nlrp-Dependent Development, Summer Reign Moore

Graduate Theses/Dissertations

ErbB3-binding protein 1 (EBP1) helps regulate gene expression through various epigenetic modifications and is crucial for embryotic development. NLRP2 and NLRP7 are more commonly known for their roles in the immune system, however, recent research has implicated NLRP2 and 7 as critical factors in embryonic development. EPB1, NLRP2, and NLRP7 dysfunction is a known cause of recurrent miscarriages and other developmental diseases, including infertility. NLRP2 and NLRP7 are also known to affect the levels of DNA methylation, despite that they are located exclusively in the cytoplasm. However, EBP1 can be located in the nucleus and cytoplasm, and is known to …

Effect Of P2y2 Receptors On Leukocyte Behavior Under Acute Inflammation In Transgenic Male Mice In Vivo, Corynn D. Knight

Graduate Theses/Dissertations

P2Y₂ receptors, G-protein coupled receptors and transmembrane proteins, are present on most cells in the body and hold a wide variety of roles. Previous research indicates that under resting conditions, P2Y₂ receptors suppress the movement of leukocytes but it is unknown how inflammation will alter this in the body. The objective of this project was to determine the effect of P2Y₂ receptors on leukocyte behavior in vivo under acute inflammation using Intravenous Microscopy (IVM) in post-capillary venules of the cremaster skeletal muscle. Lipopolysaccharide was injected into the scrotum of transgenic male mice to cause localized acute inflammation. …

The Implications Of Free Exercise Clause Jurisprudence For State Abortion Bans, Kunjan Sunil Patel

Student Works

No abstract provided.

Enhancing Microwave Disinfection: Impact Of Sodium Chloride On Microbial Inactivation, Saleh A. Alfawaz, Ibrahim Nasser I. Alquaydheb, Amirreza Ghadimi Avval, Sara Ghayouraneh, Samir M. El-Ghazaly, Jianhong Zhou

Electrical Engineering and Computer Science Faculty Publications and Presentations

This study explores the role of sodium chloride (NaCl) in enhancing the efficiency of microbial inactivation using microwave energy with two distinct methods: temperature-controlled treatment and predefined cycle. The primary objective is to maintain a stable temperature within the biological samples during treatment. Detailed descriptions of the treatment system’s design and the function of each element are provided. Simulations are conducted to illustrate the heating behavior of liquids with and without NaCl, revealing significant differences in temperature profiles between the two media. The experimental design and the objective behind each iteration are discussed. The experimental design includes three different power …

Management Protocol For Uncomplicated Peritonsillar Abscess: Standardizing Care And Improving Emergency Medicine Resident Confidence., John Casey, Scott Keidel, Marissa Kudo, Miriam Chan

Medical Education Articles

INTRODUCTION: A peritonsillar abscess (PTA) is a frequent reason for a visit to the emergency department. As there are no current published guidelines for medical versus surgical management, attending physicians vary among management tendencies, generating uncertainty among resident physicians. This project established a standard of care for managing patients with PTA and provided clear management guidelines to the emergency department, in collaboration with the otolaryngology department, at a community academic hospital.

METHODS: Pre- and post-interventional, anonymous surveys were given to assess resident physician confidence in the management of PTA. A proposed management protocol was developed based on existing literature and …

Exploring Interdisciplinary Literacy Practices Supporting Youth Creativity, Critical Literacy, And Climate Change From An Interdisciplinary Perspective, Thomas W. Bean

Teaching & Learning Faculty Publications

Norfolk, Virginia endures frequent tide- and rain-impacted flooding with king tides and flooding neighborhoods. The heavy rainfall envelops parking lots at the naval airbase, and plans are underway to create barrier sea walls that can be adjusted based on conditions. Given various dire predications for future sea level rise, Old Dominion University has created a “Maritime Consortium” aimed at bringing together interested faculty and students from a range of fields (e.g., oceanography, engineering, education, and other fields). At this stage the focus is on compiling a directory of interested parties. So far regular meetings have been held to learn about …

Children's Moments Of "Becoming" In Classrooms: Spatial Production And Multiliteracy Practices, Seongryeong Yu

Teaching & Learning Faculty Publications

While immigrant children’s identity negotiation and their sense of belonging are increasingly highlighted, existing literature remains largely focused on language abilities and identity struggles, often emphasizing rigid definitions of “identity” grounded in blood, language, and culture. Drawing on findings from my dissertation, this comparative ethnographic case study examines the fluidity of identity through literacy practices that help children construct meaning and foster belonging. By analyzing how 10-year-old students’ literacy practices interact with physical and social environments at school, I discuss shared expressions of emotions, power dynamics, the role of language, and variations in the use of cultural materials. These moments …

The Regenarrative: How To Change The Story In Order To Change The Future, S. Rose Bigheart O'Leary

Dartmouth College Master’s Theses

Abstract

In the era of Climate Change, many are concerned that the end of the Anthropocene, or the end of the era of human life on Earth, is upon us. Western European colonialism and its subsequent systems (settler-colonialism, colonial-capitalism, and globalization - sometimes termed “neocolonialism”) have all been implicated in contributing to unsustainable behaviors linked to accelerating climate change. In searching for possible solutions, some have called for listening to Indigenous Peoples, citing ethics of sustainability found among many Indigenous cultures. However, the cultural products of settler-colonialism are still dominant in ways that do not allow for Indigenous worldviews to …

Deep Screens: A Pipeline For Transforming Pose Estimation In Film Into 3d Character Animations, Yaming Xu

Dartmouth College Master’s Theses

With the advancement of computer vision and machine learning, techniques have emerged to capture movement data from humans in video footage. The Deep Screens Project utilizes these techniques to extract 3D human body pose data from film using machine learning and computer vision algorithms. Once data is extracted, it will undergo statistical analysis to quantitatively characterize the acting styles specific to various eras, genres, and actors. My thesis contributes to the Deep Screens Project by developing a pipeline that integrates machine learning and computer vision libraries to import data into a 3D visualization environment such as Unity. This pipeline includes …

Advancements In Sarcoma- And Nerve-Specific Fluorescence Imaging For Surgical Guidance, Kendra A. Hebert

Dartmouth College Master’s Theses

Fluorescence guided surgery (FGS) is an evolving field that aims to improve patient outcomes by using fluorophores to identify important tissues during surgery, such as tumors and nerves. In this thesis work, we explored different methods of identifying nerve and tumor tissues for FGS and a novel fluorescence-based method to determine the depths of these structures.

Researchers have explored using fluorescence guided surgery for surgical resection of cancerous tissues, including recent work by our group focusing on identifying soft tissue sarcomas with ABY-029, an epidermal growth factor receptor targeting probe. However, our preclinical and clinical work shows no single reporter …

Asynchronous Movement Patterns Between Breeding And Stopover Locations In A Long-Distance Migratory Songbird, Theodore Zenzal, Andrea Contina, Hannah Vander Zanden, Leanne Kuwahara, Daniel Allen, Kristen Covino

Faculty Publications

The species-specific migratory patterns and strategies of many songbirds remain unknown or understudied, as research in animal ecology is biased toward the breeding period, with the fewest studies on the migratory period across taxa. Identifying large-scale spatiotemporal migratory patterns is challenging, as individuals within a species may vary in their migratory behavior and strategies. The Yellow Warbler (Setophaga petechia) is a Nearctic-Neotropical migrant that is relatively well studied during the breeding season, but its species-wide migratory patterns remain understudied. Our aim in studying Yellow Warbler movement ecology was to characterize temporal migration patterns during fall migration. We sought to determine …

The Role Of Altered Cell-Cell Communication Between Glia And Neurons In Alzheimer’S Disease, Tabea Marga Soelter

All ETDs from UAB

Alzheimer’s disease is the most prevalent neurodegenerative disease and is characterized by progressive memory loss and cognitive decline, affecting behavior, speech, and motor abilities. The neuropathology includes the formation of extracellular amyloid-β plaques and intracellular neurofibrillary tangles of phosphorylated tau. Additionally, neurons become functionally impaired before degenerating and dying. While neuronal loss is a disease hallmark, glia maintain neuronal health and homeostasis through cell-cell communication with neurons. Cellular crosstalk is mediated through the release of chemical intermediates (i.e., ligands), which are taken up by cell surface membrane receptors. Previous studies have shown dysregulation of global cell-cell communication patterns and communication …

Optical Absorption Of Defects In Aluminum Nitride, Mackenzie Siford

All ETDs from UAB

Aluminum nitride (AlN) is an ultrawide bandgap semiconductor material known for its applications in high power microelectronic and optoelectronic devices due to its high thermal conductivity and high electrical resistivity. Point defects are known to hinder the material’s properties and are therefore a subject of interest in semiconductor materials research. The samples used in this work were grown by physical vapor transport (PVT) at Hexatech and they exhibit amber and clear coloration as well as a nonuniformity of charge, which was investigated. Experiments were carried out by electron paramagnetic resonance (EPR) and photo-EPR spectroscopy in order to detect the defect …

Cross-Laminated Timber For Sustainable Construction - Long-Term Performance And Environmental Impacts, Arthiha Tharmrasan

Open Access Master's Theses

As concerns about climate change and its extensive impacts continue to grow, the construction industry has become focus of attention due to its substantial role in contributing to carbon dioxide emissions and resource depletion. This research thesis delves into the potential of timber structures, particularly cross-laminated timber (CLT), to offer sustainable alternatives to traditional construction materials. The study is structured into two main parts: an examination of the long-term performance of CLT and an evaluation of its environmental impacts through life cycle assessment (LCA).

The initial section of the study focuses on the durability and mechanical integrity of CLT structures, …

The Role Of Feedback In Accurate Delivery Of Skill Acquisition Programs In Applied Behavior Analysis, Cyndy Wollenweber

Research Papers

Feedback is commonly used to increase and maintain employee performance. Although the effectiveness of feedback is frequently studied in applied behavior analysis (ABA), there are various considerations when it comes to providing feedback, such as the type of feedback, delivery method, and timing of feedback. For instance, although the feedback sandwich is commonly used, where positive feedback is delivered followed by corrective feedback and more positive feedback, empirical findings are mixed (Henley & DiGennaro Reed 2015; Parkes et. al., 2013). Therefore, the current paper will review ABA, organizational behavior management, the role of feedback in the aforementioned areas, and provide …

Optimization Of A Low-Cost Corona Dielectric-Barrier Discharge Plasma Wastewater Treatment System Through Central Composite Design/Response Surface Methodology With Mechanistic And Efficiency Analysis, Yiting Xiao, Yang Tian, Yuanhang Zhan, Jun Zhu

Biological and Agricultural Engineering Faculty Publications and Presentations

Water pollution, which is intensified by the release of hard-to-degrade pollutants, poses severe threats to ecosystems, human health, and economic development. The existing advanced oxidation processes often involve high operational costs and can potentially result in secondary pollution, highlighting the necessity for innovative and more sustainable solutions. To address these challenges, our study introduces a cost-effective and eco-friendly corona dielectric-barrier discharge for wastewater treatment. Using the central composite design/response surface methodology, a high decolorization rate of 98% of methylene blue (MB) was achieved within 10 min by optimizing parameters such as pH and voltage. Furthermore, the mechanisms underlying the generation …

Rule-In-Use For Community-Based Springs Management Faces Land Use Pressures: Lesson Learned From Manggarai District, Bernadinus Steni, Hariadi Kartodihardjo, Soeryo Adiwibowo, Ruchyat Deni Djakapermana

The Indonesian Journal of Socio-Legal Studies

The struggle for water is one of the greatest immediate risks of the climate crisis. Therefore, the institutional challenge of water management is increasingly urgent and requires a number of consensuses to succeed, including community-based natural resource management (CBNRM). A key challenge to the traditional consensus for water conservation is the increasing need for land conversion due to population growth, which in turn deflects decision-making power away from traditional institutions towards external decision-makers such as regional governments. Using Ostrom's conceptual framework of rules of use, this research examines shifting spring water management in the context of Kabupaten Manggarai. The paper …

Exploring The Associations Between Cognitive Training, Social Determinants Of Health, And Driving Behaviors: A Longitudinal Analysis Of The Active Study, Katie Wheeler

All ETDs from UAB

As the average lifespan increases, older adults are remaining independent into older ages than before. The ability to drive a vehicle is an essential part of daily living that helps older adults maintain independence. Cognitive training, specifically speed of processing training (SOPT), is an intervention that has consistently shown to benefit older adult’s driving abilities and driving behaviors. This dissertation examined the longitudinal association between cognitive training and primary driving location on crash risk across 20 years (Paper 1), investigated the effects of cognitive training and dosage on driving mobility across 10 years (Paper 2), and explored social determinants of …

The Modification Of Single Domain Antibody Framework And Variable Regions To Impart Novel Pharmacodynamic And Pharmacokinetic Properties, Lucinda Ann Hall

All ETDs from UAB

In recent years, nanobodies have become important theranostic molecules, and research has focused on improving their pharmacokinetics and binding for novel targets. Nanobodies are characterized by their high kidney uptake, leading to potentially unsafe exposure of the kidneys when delivering cytotoxic payloads. Researchers hypothesize that positively charged amino acids contribute to this kidney uptake. To address this, we assessed the impact of substituting lysine residues within the 2Rs15d HER2 nanobody scaffold to alanine on its in vivo pharmacokinetics using positron emission tomography (PET) imaging. We found that nanobodies bearing lysine-to-alanine substitutions maintained their affinity for HER2. Characterization of the K88A …

Opossums And Pathogens: A Survey Of Vector-Borne And Zoonotic Pathogens From Didelphis Virginiana In The Midwest, Usa, Cassandra C. P. Strehl

Masters Theses

Didelphis virginiana are at elevated risk of exposure to many zoonotic and vector-borne pathogens (ZVBP) as a result of their unfastidious diets, large geographic ranges, and diverse habitat types. Didelphis virginiana are synanthropic animals, which is concerning considering the spillover risk of pathogens D. virginiana present as a result. 81 D. virginiana from Ohio and Illinois were screened for Rickettsia spp., Mycoplasma spp., Borrelia burgdorferi, Trypanosoma cruzi, and apicomplexan pathogens. Live D. virginiana were trapped in wire cage traps to perform venipuncture for blood collection. Samples collected as roadkill or from animal control companies were dissected and spleen …

Riverrun 2024, Saint Mary's College Of California

Riverrun Literary Magazine

No abstract provided.

The Power Of Action, Giavanna Fioretti

Comm-entary

This essay analyzes a constructive conversation me and my roommate Kaylee had with a friend of ours, Teddy. This conversation presented itself after Kaylee and I witnessing a form of a microaggression. It was not intended with harm, but the conversation was one that we felt we needed to discuss. This essay emphasizes the impact of action and how it can be put to very good use. It also discusses how Teddy felt after the conversation, as opposed to how Kaylee and I felt after discussing this issue with him. This conversation was handled with kindness, as well as attempting …

Lysophospholipids Are Associated With Outcomes In Hospitalized Patients With Mild Traumatic Brain Injury, Aaron M Gusdon, Jude Pj Savarraj, John B Redell, Atzhiry Paz, Sarah Hinds, Angela Burkett, Glenda Torres, Xuefang Ren, Neeraj Badjatia, Georgene W Hergenroeder, Anthony N Moore, H Alex Choi, Pramod K Dash

Faculty, Staff and Student Publications

Mild traumatic brain injury (mTBI) accounts for 70-90% of all TBI cases. Lipid metabolites have important roles in plasma membrane biogenesis, function, and cell signaling. As TBI can compromise plasma membrane integrity and alter brain cell function, we sought to identify circulating phospholipid alterations after mTBI, and determine if these changes were associated with clinical outcomes. Patients with mTBI (Glasgow Coma Score [GCS] ≥13 and loss of consciousness <30 >min) were recruited. A total of 84 mTBI subjects were enrolled after admission to a level I trauma center, with the majority having evidence of traumatic intracranial hemorrhage on brain computed tomography …

Image-Guided Deployment And Monitoring Of A Novel Tungsten Nanoparticle-Infused Radiopaque Absorbable Inferior Vena Cava Filter In A Swine Model, Erin Marie San Valentin, Jossana A Damasco, Marvin Bernardino, Karem A Court, Biana Godin, Gino Martin Canlas, Adam Melancon, Gouthami Chintalapani, Megan C Jacobsen, William Norton, Rick R Layman, Natalie Fowlkes, Stephen R Chen, Steven Y Huang, Marites P Melancon

Faculty, Staff and Student Publications

PURPOSE: To improve radiopacity of radiolucent absorbable poly-p-dioxanone (PPDO) inferior vena cava filters (IVCFs) and demostrate their effectiveness in clot-trapping ability.

MATERIALS AND METHODS: Tungsten nanoparticles (WNPs) were incorporated along with polyhydroxybutyrate (PHB), polycaprolactone (PCL), and polyvinylpyrrolidone (PVP) polymers to increase the surface adsorption of WNPs. The physicochemical and in vitro and in vivo imaging properties of PPDO IVCFs with WNPs with single-polymer PHB (W-P) were compared with those of WNPs with polymer blends consisting of PHB, PCL, and PVP (W-PB).

RESULTS: In vitro analyses using PPDO sutures showed enhanced radiopacity with either W-P or W-PB coating, without compromising the …

Increased Resolvin E1 Production By Peripheral Blood Mononuclear Cells In Periodontitis Patients: Pilot Study, Lina J Suárez, Wilmer González-Duarte, Rodrigo Torrez-Velasco, Viviana Salinas, Nelly S Roa-Molina, Sindy M Muñoz, Luz-Stella Rodríguez, Roger M Arce, Jamil A Shibli, Adriana Rodríguez-Ciodaro

Faculty, Staff and Student Publications

This study quantified the production of the pro-resolving agent Resolvin E1 by peripheral blood mononuclear cells (PBMC) from 20 systemically healthy volunteers with and without periodontitis after stimulation with lipopolysaccharide (LPS) from Porphyromonas gingivalis (Pg). Ten periodontitis patients and 10 healthy volunteers (30-50 years old), matched by age and sex, were recruited. Peripheral blood mononuclear cells were isolated and stimulated in culture plates for 24 hours with Pg LPS. Resolvin E1 levels were measured in the supernatants by enzyme-linked immunosorbent assay. Significantly higher production of Resolvin E1 was observed in both groups when stimulated with LPS compared to baseline levels …