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A Study Of Ice And Fire: Environmental Change Impacts On Lakes Of The Nebraska Sandhills, Daniel Gschwentner

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

The Nebraska Sandhills contain thousands of shallow, groundwater-fed lakes. These lakes are extremely sensitive to environmental and climatic changes due to their isolated hydrological setting and small volume. Building on previous work on the hydrology, geochemistry and long-term climate response of Sandhill lakes, my research considers how ecosystem processes such as primary production, nutrient limitation and water quality respond to short-term environmental and climatic change. In my first data chapter, I highlight that Sandhill lakes are nitrogen (N) but not phosphorus (P) limited and that N:P ratios are poor predictors of nutrient limitation status in Sandhill lakes. In my second …

Catching A Fever: A Comparison Of Vachellia Xanthophloea Populations In The Limpopo And Luvuvhu River Floodplains Of The Makuleke Contractual Park, Kianie B. David

School of Natural Resources: Dissertations, Theses, and Student Research

This study investigates patterns of stand structure regeneration, growth characteristics, and coarse woody debris (CWD) patterns in Vachellia xanthophloea (fever tree) stands within the Makuleke Contractual Park (MCP), a semi-arid savanna system in northern Kruger National Park (KNP), South Africa. Fieldwork was conducted across two stand types: a monospecific fever tree stand in Rietbok Vlei and a mixed-species stand in the Western Nhlangaluwe Floodplain where fever tree is established with Faidherbia albida (ana tree). Data were collected from 20 total 1/4-acre (1,011 m²) circular plots between both stands in 2024 and 2025, including seedling root collar diameter (RCD), …

Bioenergy Crop Production: Implications For Grassland Bird Communities In Southwestern Nebraska, Grace E. Schuster

School of Natural Resources: Dissertations, Theses, and Student Research

Biofuel and bioenergy systems are components of most climate stabilization pathways to reduce greenhouse gas emissions and limit global warming. Currently, corn (Zea mays) is the predominant feedstock used for bioenergy production in the United States. However, widespread production of this monoculture crop has resulted in many negative environmental impacts. The most notorious impact has been the loss of grassland habitat due to agriculture expansion which has had detrimental effects on wildlife that depend on grassland habitat. One such group, grassland birds, has faced steeper, more consistent, and more widespread declines than any other avian guild. Therefore, strategies …

Dendrochronology: Understanding Hydroclimate In The Eastern Himalaya, Solvej Lee, Alex Witten

Nepal: Geoscience in the Himalaya

Considering the challenges of climate change, it is imperative to understand hydroclimate variability in sensitive regions around the world, such as the Himalayas. Proxies such as lake cores, speleothems, dendrochronology, and others help provide high-resolution data on paleoclimatic conditions. Dendrochronology provides an ideal proxy for understanding recent hydroclimatic conditions. The data it provides is exceptional due to the cyclical and highly sensitive nature of tree rings. While the western and central Nepal Himalaya have been analyzed using these methods, sections of the eastern Nepal Himalaya have yet to be observed. In this study, we aim to close this knowledge gap …

Defining Identity: Black Women's Personhood As Examined In Sula, The Secret Lives Of Church Ladies, And Sister Citizen: Shame, Stereotypes, And Black Women In America, Taylor King

Theses (2016-Present)

My thesis illustrates the components of Black womanhood within Sula by Toni Morrison and The Secret Lives of Church Ladies by Deesha Philyaw through the political theories of Sister Citizen: Shame, Stereotypes, and Black Women in America, by Melissa V. Harris-Perry. These three works reiterate the multifacetedness of Black identity, specifically Black women in the United States of America. Through textual analysis of these works I examine the stereotypes, struggles, and experiences of motherhood, spirituality, and identity within each work and how slavery and racism impact many African American women. In Sula, The Secret Lives of Church Ladies, and Sister …

Sex Differences In Motor Unit Behavior In Patients With Parkinson's Disease, Yuichi Nishikawa, Kohei Watanabe, Aleš Holobar, Tetsuya Takahashi, Noriaki Maeda, Hirofumi Maruyama, Allison Hyngstrom

Physical Therapy Faculty Research and Publications

The aim of this study was to determine whether there are sex differences in motor unit firing behavior in patients with Parkinson's disease. Twenty-seven patients with Parkinson's disease (females = 14 [age = 71.1 ± 6.8], males = 13 [age = 69.2 ± 10.3], Unified Parkinson's Disease Rating Scale Part III score; females = 10.8 ± 4.8, males = 11.4 ± 1.4) performed a contraction at 30% of the maximal voluntary contraction. For each participant, motor unit spike trains were decomposed from high-density surface electromyography data recorded from bilateral vastus lateralis muscles via blind source separation algorithms. In addition to …

Electrochemistry Behind Pfas: Mechanistic And Analytical Approach For Sensing And Degradation Strategies, Jonathan Josue Calvillo Solis

Open Access Theses & Dissertations

Understanding the fundamental electrochemistry of perfluoroalkyl substances (PFAS) is key to developing effective water remediation and sensing strategies. This work explores the thermodynamics and kinetics of perfluorooctanoic acid (PFOA) electroreduction, focusing on C-F bond cleavage. These insights were applied to design a highly sensitive electrochemical sensor for detecting trace levels of PFOA in water. This dissertation focuses on the electrochemical investigation of the reduction reaction of PFOA in aqueous and organic media employing different electrode materials. This exploration allows to understand the defluorination reaction of PFAS to further propose potential strategies for water treatment and PFOA electrosensing. Through electrochemical, spectroscopical …

Occupancy Sampling To Examine Spatial Distribution Of Oklahoma Salamanders (Eurycea Tynerensis) Among Headwater Streams In The Ozark Highlands, Sophia Anreder

Biological Sciences Undergraduate Honors Theses

Water conditions are changing globally due to climate change (Gleick, 1989). Headwater streams specifically are vulnerable to changes in hydrology, water quality, and physical characteristics from anthropogenic practices due to their small watersheds with shallow soils, yet they are often not a priority in conservation (Campbell et al., 2011; Abell et al., 2017). Within streams, plethodontid (i.e., lungless) salamanders, which are also sensitive to environmental changes, may be restricted in their distribution due to undefined stream characteristics and predation by fish (Welsh and Droege, 2002; Kuhajda et al., 2015). To better understand the pressures that influence stream salamander occupancy, I …

July 2025 Louisiana Bar Exam, Louisiana Supreme Court Committee On Bar Admissions

Louisiana Bar Exams

No abstract provided.

Aircraft Bird Strike Risk Prediction Using Machine Learning And Analytic Hierarchy Process, Jason Anthony Powell

Doctoral Dissertations and Master's Theses

To address the limitations of Next Generation Radar-based bird strike forecasting, this study modeled 12 spatiotemporal weather features from the National Oceanic and Atmospheric Administration alongside bird strike risk using Long Short-Term Memory Recurrent Neural Network (LSTM-RNN), XGBoost regression tree, and Bayesian network algorithms. Five years of bird strike data from four geographically diverse airfields served as the target risk variable, categorized as low, moderate, or severe based on Department of the Air Force risk models. The ensemble model, which combines the LSTM-RNN and XGBoost regression algorithms, yielded the most accurate forecasts, achieving 80% to 93% accuracy across all airfields, …

Emerging Biomimetic Drug Delivery Nanoparticles Inspired By Extracellular Vesicles, Viswanathan Sundaram, Santosh Aryal

Pharmacy Faculty Publications and Presentations

Nanoparticles (NPs) made up of cellular components such as extracellular vesicles (EVs) with a biomimetic outlook have emerged as a revolutionary approach in nanomedicine, providing significant benefits for targeted drug administration, immunotherapy, monitoring therapeutic response, and diagnostic applications. Utilizing the distinctive characteristics of natural cell membranes, membrane proteins, and cellular contents, these biomimetic NPs acquire essential biological functions from their source and biogenesis, including immune evasion, extended circulation, and target recognition, rendering them optimal candidates for therapeutic applications. This review offers a comprehensive examination of the methodologies of EVs infused with synthetic.

Exploring Veteran And Non-Veteran Nursing Student Satisfaction Utilizing Marginality And Financial Stress, Juanita Nickols

Nursing Theses and Dissertations

It is widely recognized that there is a nursing shortage in the U.S. due to a growing aging population, nurses retiring, and a low nursing school capacity. Nursing schools can ameliorate part of this shortage by devising ways to increase nursing student success and graduation rates. This three-manuscript paper aims to present various ideas to help nursing schools in this endeavor. A relatively unstudied population is the veteran nursing student (VNS), the focus of this paper. The first chapter, Chapter 2: A Concept Analysis of Overload: Implications for Undergraduate Nursing Students Success, discusses the concept of overload so the …

Genetically Proxied Blood Pressure, Vascular Brain Injury, And Alzheimer's Disease Pathology, Iyas Daghlas, Michelle R. Caunca, Lincoln M.P. Shade, Malik Nassan, Kristine Yaffe, David W. Fardo, Dipender Gill

Biostatistics Faculty Publications

INTRODUCTION: Lower blood pressure (BP) is linked to reduced dementia risk, though it is uncertain whether this benefit stems solely from mitigating vascular brain injury (VBI) or also extends to directly influencing Alzheimer's disease (AD) pathology. We leveraged Mendelian randomization (MR) to assess whether lifelong lower BP is causally associated with neuropathological correlates of VBI and AD. METHODS: We identified genetic proxies for systolic and diastolic BP (n = 1,028,980) and applied them in MR analyses of post mortem neuropathological measures of VBI and AD (n = 6363–7786). RESULTS: Genetically proxied lower systolic BP associated with reduced risk of all …

Functionalization And Characterization Of Liposomes For Targeted Drug Delivery, Kayla Lee, Daniel Fologea, Lizbeth Calvillo, Ana Flacau, Patrick Jude, Maila Honcik, Daniel Robertson

Idaho Conference on Undergraduate Research

Liposomes are among the most widely used nanocarriers for drug delivery due to their exceptional biocompatibility and ability to passively accumulate at tumor sites, both of which contribute to enhanced therapeutic efficacy. However, despite these advantages, targeting specificity remains limited, often leading to off-target drug release and elevated systemic toxicity. Moreover, liposomes are generally engineered with a predefined target during production, substantially narrowing their post-production versatility. To address these limitations, surface modification of liposomes is employed to improve targeting specificity and versatility in a time and cost-effective manner. Here, we propose post-production functionalization of liposomes by employing Function-Spacer-Lipid (FSL) constructs …

Identification Of Novel Components Of The Retinal Determination Gene Network In Drosophila Cell Lines, Robert Drewell, Jacqueline Dresch

Biology

The retinal determination genetic network controls the development of the visual system in all seeing animals through the molecular regulation of cells to adopt an eye tissue fate. The compound eye of the fruit fly, Drosophila melanogaster, is an excellent model system to study the complex mechanisms within the network that regulate specification of cellular identity during embryogenesis. In Drosophila, the two Pax6 paralogues, eyeless and twin of eyeless, sit at the very pinnacle of the network and their expression early in development activates critical downstream components of the retinal determination pathway. In this study, we investigate the expression of …

Drone Delivery Of Bioweapons: Responsibilities For Force Readiness, James Giordano, Diane Dieuliis

Strategic Forums

This Strategic Forum by Dr. James Giordano and Dr. Diane DiEuliis explores the convergence of drone technology and emerging biotechnologies. This includes synthetic biology, gene editing, and nanoscale biomaterials, and their implications for military readiness and national security. It examines how these dual-use technologies could enable novel delivery methods for biological agents, expanding the threat landscape and lowering technical barriers. The analysis emphasizes the need for proactive defense planning, enhanced detection and countermeasures, and integrated strategies to mitigate risks, ensuring force readiness in the face of evolving biological threats.

Primary Investigation Of Rice-Fish Co-Culture: Investigating The Feasibility Of Raising Fish In Flooded Rice Paddies In The Southern Usa, Yulin Jia, Aaron K. Jackson, Bartholomew Green, S. Adam Fuller, Heather Box, Laduska Sells, Candis Ray, Paxton Harper, Brennan Smith

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

With limited land and water resources available it has become critical to maximize output for agricultural products while maintaining sustainable farming practices. Ricefish co-culture can be used to maximize limited land and water resources for production of rice and fish concurrently and reduce the need of chemical inputs. While rice-fish co-culture has been practiced in Asia for centuries, very few studies have examined the feasibility and economic impact of rice fish co-culture in the U.S.A. Two studies were conducted in Stuttgart, Arkansas, U.S.A. from 2023-2024 to investigate the suitability of raising Koi carp in flooded rice paddies with a sushi …

Endothelium- And Fibroblast-Derived C-Type Natriuretic Peptide Prevents The Development And Progression Of Aortic Aneurysm, Aisah A. Aubdool, Amie J. Moyes, Cristina Perez-Ternero, Reshma S. Baliga, Jaspinder Singh Sanghera, M. Taaha Syed, Kareemah Jaigirdar, Anmolpreet K. Panesar, Janice C. Tsui, Yanming Li, Hernan G. Vasquez, Ying H. Shen, Scott A. Lemaire, Juliette Raffort, Ziad Mallat, Hong S. Lu, Alan Daugherty, Adrian J. Hobbs

Physiology Faculty Publications

BACKGROUND: Thoracic (TAA) and abdominal (AAA) aortic aneurysm are life-threatening diseases characterized by dilation, inflammation, and structural weakness; development of pharmacological therapies is desperately needed. CNP (C-type natriuretic peptide) plays a key role in vascular homeostasis, mediating vasodilator, anti-inflammatory, and antiatherogenic actions. Since such processes drive AA, we determined the role of endogenous CNP in offsetting pathogenesis. METHODS: Tissue from patients with AA was analyzed to determine the consequences on CNP signaling. Ascending and suprarenal aortic diameters were assessed at baseline and following Ang II (angiotensin II; 1.44 mg/kg per day) infusion in wild-type, endothelium-restricted (ecCNP^-/-), fibroblast-restricted (fbCNP …

At The Nexus Between Epigenetics And Senescence, Toby L. Chambers, Jaden Wells, Pieter Jan Koopmans, Francielly Morena, Zain B. Malik, Nicholas P. Greene, Antonio Filareto, Michael Franti, Patrizia Sini, Harald Weinstabl, Robert T. Brooke, Milda Milčiūtė, Juozas Gordevičius, Steve Horvath, Yuan Wen, Cory M. Dungan, Kevin A. Murach

Physiology Faculty Publications

Senescent cells emerge with aging and injury. The contribution of senescent cells to DNA methylation age (DNAmAGE) in vivo is uncertain. Furthermore, stem cell therapy can mediate “rejuvenation”, but how tissue regeneration controlled by resident stem cells affects whole tissue DNAmAGE is unclear. We assessed DNAmAGE with or without senolytics (BI01) in aged male mice (24–25 months) 35 days following muscle healing (BaCl₂-induced regeneration versus non-injured). Young injured mice (5–6 months) without senolytics were comparators. DNAmAGE was decelerated by up to 68% after injury in aged muscle. DNAmAGE was modestly but further significantly decelerated by injury recovery with …

The Evaluation Of Anti-Factor Xa Levels In Hospitalised Patients Receiving Low Molecular Weight Heparin (Lmwh): A Prospective Study, Tandzile Thandwayinkosi Simelane

Master of Medicine in Clinical Pathology

Background 

Patients admitted to the hospital have been reported to have coagulation abnormalities due to various factors including immobilisation, preexisting disease, and current illness. The overall incidence of venous thromboembolism (VTE) in critically ill patients varies from 15% to well over 50%, even with the use of prophylactic measures in most patients. Low molecular weight heparin (LMWH) and unfractionated heparin (UFH) are the recommended drugs for VTE prophylaxis in inpatient care. Although not standardly recommended, the laboratory can offer monitoring of anti-Factor Xa using the gold standard method of chromogenic anti-Factor X assay. The anti-Factor Xa levels are notably affected …

Phylogenomic And Population Genomic Analyses Of Ultraconserved Elements Reveal Deep Coalescence And Introgression Shaped Diversification Patterns In Lamprologine Cichlids Of The Congo River, Fernando Alda, S. Elizabeth Alter, Naoko P. Kurata, Prosanta Chakrabarty, Melanie L J Stiassny

Biology, Agriculture and Chemistry Faculty Publications and Presentations

Understanding the drivers of diversification is a central goal in evolutionary biology but can be challenging when lineages radiate quickly and/or hybridize frequently. Cichlids in the tribe Lamprologini, an exceptionally diverse clade found in the Congo basin, exemplify these issues: their evolutionary history has been difficult to untangle with previous data sets, particularly with regard to river-dwelling lineages in the genus Lamprologus. This clade notably includes the only known blind and depigmented cichlid, Lamprologus lethops. Here, we reconstructed the evolutionary, population, and biogeographic history of a Lamprologus clade from the Congo River by leveraging genomic data and sampling over 50 …

Project-Based Learning Vs Traditional Teaching Methods, James Kingsley

Master's Theses & Capstone Projects

This study explored how teachers compare Project-Based Learning (PBL) with traditional teaching methods in elementary classrooms. Many schools today still rely heavily on lectures, worksheets, and test-based instruction, which can leave students feeling disconnected and unmotivated. This research began with the problem that students often lose interest in learning when it feels disconnected from the real world. The purpose of this study was to better understand teacher's perspectives on PBL and whether they believe it increases student engagement, learning, and life skills. Using a mixed-methods survey with both multiple choice and open-ended questions, the study gathered responses from elementary educators …

Crosssections, Summer 2025, University Of Northern Iowa. Department Of Physics.

CrossSections

Contents:

A Message from the Department Head, Dr. Paul Shand --- 1
Department Happenings --- 3
Faculty Profile - Takeshi Yasuda --- 7
Student Profile - Brandon Schmidt --- 8
Student Research --- 9
Student Focus --- 10
Physics Education --- 13
Alumni Profile - Roger Burkhart --- 14
Alumni News - Sterling Hartman --- 16
New Physics --- 17

Perceptions Of Risky Sexual Behavior Among Female Students: A Qualitative Analysis Of Contributing Factors, Consequences, And Prevention Strategies, Leila Bozorgian, Fatemeh Ansari, Fatemeh Janipour, Solmaz Mohammadi

Journal of Asian Midwives (JAM)

Background: Risky behaviors among young people are a significant concern for societies worldwide, leading to physical and psychosocial damage. Despite efforts to raise awareness about such risky behaviors over the past two decades, their prevalence continues to rise. Therefore, this study aimed to explain perceptions of the prevalence of risky sexual behaviors among female students.
Methods: A qualitative descriptive study using a conventional content analysis approach was conducted from August to mid-September 2024 in Yasoj, Iran. The study participants were selected using purposive sampling. The data were collected using semi-structured interviews conducted with 18 female students. Data collection …

Development And Validation Of Risk Assessment Tools For Hypertensive Disorder In Pregnancy, Vanitha K, Hepsibah Sharmil, Vijayalakshmi Kandasamy

Journal of Asian Midwives (JAM)

Aims and Background: Hypertensive disorders in pregnancy (HDP) have significant impact on both mothers and newborns leading to complications such as Eclampsia, Preterm delivery, Renal and cardiac problems, Intra Uterine Growth Retardation (IUGR) and Intra Uterine Fetal Death (IUFD). Early screening of hypertensive disorders in pregnancy is essential in the prevention and management of these complications. This research study aims to develop and validate a risk assessment tool for hypertensive disorders in pregnancy.
Materials and methods: A mixed-method research was carried out from December 2023 to December 2024 consisting of two steps. Step one involved the development of …

The Guardian The Month Of July 2025, Wright State Student Body

The Guardian Student Newspaper

News articles from The Guardian for the Month of July 2025. The Guardian is the official student-run newspaper for Wright State University. It has been published regularly since March of 1965.

Investigating Individual Variability In Autistic Identity And Its Moderating Effects On Mental Health And Quality Of Life, Sydney Richelle Terroso

Theses and Dissertations

The autistic community has long voiced the mental health of autistic adults as a key clinical and research priority. Autistic identity, or the recognition and embrace of core autistic traits as integral to an individual's identity as a whole, may be a potential target for therapeutic approaches aimed at supporting well-being and quality of life. The current study investigates individual differences in self-reported autistic identity scores by demographic factors and by features of autism and health history using online survey data from N=225 autistic adults. Additionally, with a subset of the participants who completed an interconnected study of current mental …

Social Comparison Target Selections As Health Information Preferences: Exploring Contextual Influences Among Women In Midlife With Elevated Risk For Cardiovascular Disease, Emmanuel Lapitan

Theses and Dissertations

Insufficient physical activity (PA) heightens the risk of chronic illnesses including cardiovascular disease (CVD), particularly among women in midlife with conditions such as hypertension. Behavioral interventions often use psychoeducation and skills training to increase PA, but how individuals interact with health-relevant information and how this relates to daily PA behavior is unclear. Health information preferences vary between individuals, but whether they vary for the same individual across contexts has been understudied. In particular, the role of contextual factors in predicting social comparison (i.e., evaluating oneself relative to others to obtain information about oneself) are not well understood. The purpose of …

Beyond Chatbots: The Emergence Of Autonomous Ai Agents In Libraries, Nikesh Narayanan

All Works

This chapter explores how generative AI and agentic AI are redefining library services through enhanced interactivity, personalization, and scalability of support. The rise of machine learning, and specifically natural language processing (NLP) with large language models, brought a new wave of capabilities to library chatbots. Moving beyond single-turn question-answering chatbots, the concept of autonomous AI agents (or agentic AI) in libraries represents a significant leap in capability. An autonomous agent is an advanced form of AI that can understand and respond to inquiries, then take action without human intervention. When they are given an objective, they can generate tasks for …

Love Potions And Love Letters: An Argument That Libertarian Free Will Isn't Necessary For Loving God, Netanel Ron

Faith and Philosophy: Journal of the Society of Christian Philosophers

No abstract provided.