Digital Commons Network^™

The Role Of Peroxisomal Acot4 And Acot8 In Modulating Lipid Metabolism And Stress Pathways In Steatotic Hepatocytes, Sylwia Miekus

Department of Nutrition and Health Sciences: Dissertations, Theses, and Student Research

Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by excessive lipid accumulation in hepatocytes and the development of lipotoxic stress that disrupts cellular homeostasis. Peroxisomal lipid metabolism plays an important role in maintaining acyl-CoA balance during fatty acid overload, yet the contribution of peroxisomal acyl-CoA thioesterases to early lipotoxic responses remains insufficiently understood. The aim of this study was to investigate the functional involvement of the peroxisomal enzymes acyl-CoA thioesterase 4 (ACOT4) and acyl-CoA thioesterase 8 (ACOT8) in hepatocyte lipid handling under acute lipotoxic conditions. An in vitro model of steatosis was established in AML12 cells through exposure to a …

Fragmentation In The U. S. Fed Cattle Market: Implications For Price Transparency And Discovery, Taralee M. Hudson

Department of Agricultural Economics: Dissertations, Theses, and Student Research

The U.S. fed cattle market is one plagued by recurring stakeholder concern. Market participants frequently raise questions about the transparency of fundamental information under existing reporting frameworks, and the extent to which Private Negotiation, the dominant trading institution, effectively facilitates price discovery. Although extensive research has sought to address these issues, much of it has failed to account for the market’s increasingly fragmented structure. This thesis is comprised of three chapters that collectively examine price transparency and discovery through the lens of market fragmentation. Each chapter presents research related to the fed cattle market and is intended to stand …

Realism, Truth, And Commitment: An Exposition And Critique Of Michael Devitt's Constitutive Account Of Realism, Samuel Elias Hobbs

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

Michael Devitt argues in Realism and Truth that positive semantic issues are not constitutive of realism concerning the mostly impersonal external world. This is motivated by his second maxim which prescribes that the metaphysical (ontological) issue of realism is to be (sharply) distinguished from any (positive) semantic issue. Devitt’s argument is that his view of realism, entitled ‘Realism’, doesn’t entail and isn’t entailed by any doctrine of truth.

This dissertation presents a critique of the argument indicated above and, thereby, Devitt’s second maxim. I present Devitt’s account of Realism and his overview of theories of truth. I next present Devitt’s …

Characterization Of Mitochondrial Dna Repair Components And Repair Choices At Targeted Double-Strand Breaks In Arabidopsis Thaliana, Moira Rodriguez

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

Plant mitochondrial genomes are complex when compared to most other eukaryotic mitochondrial genomes. They are large and variable in size, expand and rearrange frequently, abundant in non-tandem repeats, but maintain a very low synonymous substitution rate in the remaining coding regions. Many of these complexities can be explained by the increased use of double-strand break repair for DNA damage. To advance the understanding of mitochondrial genome dynamics as it relates to double-strand break repair, we performed a forward genetics screen to identify proteins involved in DNA repair in plant mitochondrial genomes. Through this screen, we identified an RNA/DNA helicase, Suv3, …

Recovery And Characterization Of Moraxella Species From Bovine Specimens, Laura G. Leger

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

The family Moraxellaceae is made up of a diverse group of 24 named species that fall into three phylogenetic groups. While most Moraxella spp. act as commensal respiratory and/or ocular flora of mammals, some are associated with disease. One of these diseases, infectious bovine keratoconjunctivitis (IBK), has significant welfare and economic impacts to both cattle and cattle producers. Moraxella bovis is the only experimentally determined cause of IBK, however, an association of Moraxella bovoculi with disease has been proposed. Currently, available vaccines do not have high levels of efficacy in the field. Culture based methods are the gold standard for …

The Graphic Shift: Leveraging Superhero Graphica To Un-Ban Critical Conversations In The Secondary English Language Arts Classroom, Avery Clason

Department of English: Dissertations, Theses, and Student Research

This thesis investigates the challenges that books are receiving during an era of social and political turmoil based on their content. Understanding why these books are polarizing for most readers and the general public is in direct connection with finding different books that can harbor the same conversations about dense topics and cultivating connections between students, the text, the world, and themselves. While there has been a search to find alternate books that are not considered "political flashpoints,” there has been limited research into the use of superhero graphica in the ELA classroom, especially in connection to utilizing this genre …

Evaluation Of Ramp Instead Of Forage During Grain Adaptation And Different Sorghum Varieties On Enteric Methane Production From Cattle, Jack T. Fort

Department of Animal Science: Dissertations, Theses, and Student Research

Two experiments were conducted to evaluate the use of RAMP (Cargill Corn Milling, Blair, Nebraska) compared with traditional forage-based adaptations on methane (CH₄) and carbon dioxide (CO₂) emissions, performance, and carcass characteristics. Experiment 1, 64 yearling British × Continental steers (initial BW = 423 ± 6 kg) were adapted using 100% RAMP (RAMP) or a traditional forage diet (CON; 43% forage) before transitioning 22 d to a common finishing diet containing 65.6% steam-flaked corn. Emissions were measured in paired replications using a two-chamber indirect calorimetry barn. During adaptation RAMP did not affect CH₄ production (g/d; …

Impact Of Constant Versus Variable Inclusions Of Modified Distillers Grains Plus Solubles On Feedlot Cattle Performance And Carcass Characteristics And Impact Of The Frequency Of Varying Modified Distillers Grains Plus Solubles Inclusions In Feedlot Diets On Performance, Carcass Characteristics, Feeding Behavior, And Ruminal Ph Of Finishing Steers, Paige M. Madison

Department of Animal Science: Dissertations, Theses, and Student Research

Inconsistent availability or supply of distillers grains (DGS) can cause more variation in DGS inclusions throughout the feeding period. Two feedlot experiments evaluated the effects of varying inclusions of modified distillers grains plus solubles (MDGS) in feedlot diets. Beef steers (n = 400; initial BW = 287) were used in a 2 × 2 + 1 factorial experiment with treatments including: control with no MDGS compared to 2 inclusions (10% and 25%) of MDGS diet inclusions fed consistently or variably. No interactions were observed between MDGS consistency and inclusion for any performance or carcass characteristics (P > 0.10), so …

Integrating Innovative Sensing And Ground Measurements For Forage Mass Estimation In Rye Pasture, Pedro Henrique Jota Fernandes

Department of Animal Science: Dissertations, Theses, and Student Research

The United States beef industry relies on forages to provide up to 80% of total lifetime dry matter intake, making accurate forage mass estimation essential for determining stocking rates, improving grazing efficiency, and supporting economic sustainability. Traditional methods to quantify forage mass, however, are time-consuming and labor-intensive. This thesis presents research efforts to achieve accurate forage mass estimation in cereal rye pasture by integrating novel sensing technologies.

Chapter 1 reviews the importance and evolution of forage mass estimation methods, from destructive clipping to indirect approaches based on canopy measurements. It then introduces remote sensing, from proximal tools to drone- and …

Investigation Of Changes In Exotic Bird Serum Vitamin D Levels Between Indoor And Outdoor Housing, Alexander J. Marley

Department of Animal Science: Dissertations, Theses, and Student Research

Vitamin D is a fat-soluble vitamin that is directly related to sunlight and is involved in multiple physiological processes including calcium metabolism, feather quality, and chick development. Most vertebrate species are capable of both absorption of exogenous vitamin D and internal synthesis of vitamin D, with vitamin D3 (cholecalciferol), being more accessible and bioactive in bird species. In exotic bird species, dietary requirements for vitamin D3 are largely unknown, and the ability to maintain adequate serum concentrations of vitamin D3 metabolites without direct sunlight exposure also requires evaluation. Concerns arise in situations where individuals may be housed indoors for extended …

Occurrence Of Per And Polyfluoroalkyl Substances In Rural Wastewater Treatment Plants And Comparison To Large Treatments Plants, Madeleine Rauhauser

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

Per and polyfluoroalkyl substances (PFAS) are a class of compounds defined by their carbon – fluorine bonds, which are incredibly strong. The strength of this bond makes these compounds very useful industrially, they are used as waterproof and grease proof coatings, and as fire retardants. The same thing that makes them useful industrially makes them incredibly recalcitrant in the environment, it is difficult to destroy these compounds. PFAS are also suspected to cause health impacts in people, such as kidney cancer and low birth weights. Wastewater has been commonly identified as a contributor to the amount of PFAS in the …

Detecting Prescribed Fire, Haying And Grazing Events Via Remote Sensing To Create Grassland Disturbance Landcovers For The Ring-Necked Pheasant (Phasianus Colchicus), Megan Amy Baldissara

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

This dissertation developed disturbance detection models to fulfill the need for remote sensing landcover products describing grassland structure. The use of landcover products derived from remote sensing is increasing over time in pheasant (Phasianus colchicus) research. Such landcover, however, does not provide relevant pheasant structural habitat information (Chapter 1). Pheasants require tall, high-density grassland for nesting, tall grassland with medium density for brood rearing, and tall grassland for wintering. Time since disturbance can serve as a proxy for structure, as it shapes vegetation by removing biomass and resetting succession. Disturbance is easier to detect than structure with current …

Art Teams Year 4 Annual (Ad Hoc) Report 2024-2025, Guy Trainin, Kimberley D'Adamo, Hyeonjin Yoon, Azadeh Hassani, Zohreh Tamimdari, Jiabin Lyu, Michael Nti Ababio, Sarah Trainin

Research and Evaluation in Education, Technology, Art, and Design

This report documents the fourth year of the Art TEAMS project, a multi-year professional learning initiative focused on arts-integrated, transdisciplinary teaching practices across Nebraska K-12 schools. During the 2024-2025 academic year, the project advanced work with its second cohort of educators while maintaining engagement with the first cohort to assess the sustainability of implementation. The second cohort brought increased diversity in art forms, including ceramics, digital media, and career and technical education, demonstrating the versatility of arts integration across curricula.

Year Four activities included delivering refined professional development courses grounded in emergent curriculum design, with significant curriculum modifications based on …

Determination Of Steroid Hormones And ⍺-Zeranol In Beef Products In East Tennessee, W. Colby Huffman, S. Ellie Jaynes, Nathan C. Duncan, D. Andrew Crain

RURALS: Review of Undergraduate Research in Agricultural and Life Sciences

Hormone growth implants are commonly used in cattle to increase growth and there is some concern that these implants may result in altered hormone concentrations in the beef from implanted cattle. This study aims to (1) develop a simple, standard, cost-effective method to measure hormones in beef and (2) compare hormones in meat from cattle not exposed to growth implants (negative controls), cattle exposed to growth implants (positive controls), and from a commercial retail store. Extraction and measurement using LCMS/MS was successful in detecting 17b-estradiol, progesterone, testosterone, and a-zeranol in meat, with a trend to lower concentrations in meat not …

Examining Microbial Biomass And Soil Organic Carbon In Annual Vs. Perennial Agricultural Ecosystem Soils, Paige Kenyon, Jacob Rutz, Kelsey S. Bitting

RURALS: Review of Undergraduate Research in Agricultural and Life Sciences

Soil systems have the ability to store large amounts of carbon for both short and long periods of time, much like other carbon pools such as oceans and forests. As increased amounts of carbon dioxide are released into the atmosphere via anthropogenic means, including the agricultural industry, scientists have been researching how to increase the amount of carbon cycled from the atmosphere and into soils as a climate change mitigation strategy. Soil systems have the capacity to sequester carbon in part due to fungal and bacterial community activity. Differences in soil microbial biomass levels between annual and perennial agricultural systems …

Interview With Orca Award Winner James Van Etten, Unl Plant Pathology; Discoverer Of Giant Viruses, Mark Griep, James Van Etten

UNL ORCA Interview Series

Dr. James Van Etten was awarded the UNL Outstanding Research and Creative Activities Award in 1992. He was born in Virginia but grew up Peoria, Illinois. Something in his youth must have sparked an interest in science because he earned his bachelor’s degree in biology from Carleton College in 1960. Carleton is a well-regarded liberal arts institution in Northfield, Minn., about 400 miles from Peoria. Next, Jim earned a master’s and doctorate at the University of Illinois in Champaign-Urbana, both in plant pathology. For his postdoctoral work in 1965 and 1966, he did postdoctoral work in the Department of Genetics …

Truth Comes Before Reconciliation: An Exercise In American Truth-Telling, Hannah Fidler

Nebraska Journal on Advancing Justice

No abstract provided.

Program Transition Success: A Practical Guide For Educators Moving Sbae Programs, Evey Choat

Department of Agricultural Leadership, Education, and Communication: Dissertations, Theses, and Student Research

What tools, strategies, and support systems can help agriculture educators navigate leadership transitions and sustain program success when moving between schools or communities? Teacher mobility and leadership transitions within School-Based Agricultural Education (SBAE) present unique challenges to program continuity, community relations, and professional sustainability. Unlike other subject areas, SBAE teachers often manage multifaceted responsibilities—as classroom instructors, FFA advisors, and community liaisons—making transitions between programs especially complex. This project addresses the lack of structured support for educators navigating these transitions by developing a Program Transition Guide specifically tailored to the needs of agricultural educators in Nebraska.

Guided by Transformational Leadership Theory …

Fraggin’ The Superhero Genre: Parody And Carnival In Dc’S Lobo, Ryan L. Johnson

Dialogue: The Interdisciplinary Journal of Popular Culture and Pedagogy

This essay examines the DC anti-hero Lobo as an ideal example of the constructive, creative power of parody and Bakhtinian carnival. Unlike Bakhtin’s assertion that carnival since the Renaissance has lost its spirit of play and become purely destructive, Lobo uses grotesque violence to create just as much as he destroys social norms. Ultimately, the mini-series under consideration provide a valuable tool for students to understand carnival, parody, and its power as criticism.

Flea News 96 (November 2025), R. L. Bossard

Flea News

Flea News is a twice-yearly newsletter about fleas (Siphonaptera). Before including in publications any of the citations given here, please review for accuracy and correct formatting. Many of our sources are abstracting journals and current literature sources, and editors have not necessarily checked citations.

Announcements

Obituary: Lane Douglas Foil (June 16, 1949 - June 22, 2025)

Siphonaptera Literature (2025): Taxonomy, Conservation, Hosts and Distributions, Physiology and Morphology, Evolution, Ecology, Pathology and Control, Microbial Symbionts

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #68 November 2025

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President's message, Deb VanOverbeke
Membership Information
2025 Outstanding Graduate Student Award Nomination Solicitation
2025 Teaching Award nomination solicitation
2025 Research Award nomination solicitation
2025 Extension Award nomination solicitation
2025 Award of Merit nomination solicitation
Gamma Sigma Delta Committees 2025
Annual Dues Notice
Membership Info and Dues
Student Award Fund solicitation
In Memoriam: Wayne W. Oberg (September 8, 1948 - February 21, 2025); Robert M. "Bob" Scriven (June 26, 1936 - August 29, 2025)
Pledge and Honor Cords
Save the Date: Initiation and Awards Reception

Unl Emeriti And Retirees Association Newsletter, November 2025

UNL Emeriti and Retirees Association: Newsletters and Other Materials

University of Nebraska-Lincoln Emeriti and Retirees Association Newsletter, November 2025

Message from the ERA President Pam Edwards

Welcome to new members

Give to the ERA scholarship fund

Wake up to well-being

Book review, The Intentional Life

Medicare open enrollment

Announcements and notices

Upcoming programming

Programming recap

Connecting through recipes

Memory moments

Stable Isotope Paleoecology In The Bridgerian (Early Eocene): Investigation Of The Bridgerian Crash And The Canopy Effect, Aaron M. English

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

The Early Eocene Climatic Optimum (EECO) was the warmest sustained interval of the Cenozoic. Its waning stages coincided with a marked decline in mammalian biodiversity known as the Bridgerian Crash, which was likely driven by increasingly cooler and drier conditions. Paleobotanical evidence suggests the early Eocene supported wet, subtropical to tropical forests at mid-latitudes, however the structure of these forests at the close of the EECO remains poorly understood. In this study, I measure carbon isotope values (d¹³C_E) from the enamel of early Bridgerian (~52.2 – 48.3 Ma) herbivorous mammals from the Greater Green River …

Comparative Analysis Of Citrate Synthase Activity In Skeletal Muscle, Liver, And Adipose Tissue In Beef Cattle, Abigail Webb

Honors Program: Senior Projects (Public)

Mitochondrial efficiency plays a central role in determining how cattle partition nutrients toward muscle growth or adipose deposition, yet little is known about tissue-specific differences in mitochondrial density among tissues or among beef cattle. This study aimed to quantify mitochondrial density in muscle, liver, and adipose tissue samples from beef cattle and evaluate its potential relationship with metabolic efficiency. Tissue samples of semitendinosus muscle (ST), liver, and subcutaneous adipose (SC) were collected, homogenized, and analyzed for citrate synthase (CS) activity using a fluorometric assay as a proxy for mitochondrial density. Preliminary analyses revealed that the semitendinosus muscle displayed the highest …

“Tell Your Papa”: Aesthetics Of Confrontation And Visual Witnessing In Nigerian Protest Music, Omotayo Jemiluyi

Dialogue: The Interdisciplinary Journal of Popular Culture and Pedagogy

This study analyzes the music video “Tell Your Papa” (2025), a politically charged protest song by Nigerian artiste Eedris Abdulkareem, as an exemplary case of aesthetics of confrontation, here conceptualized as a multimodal strategy in which direct address, anti-spectacle visual style, literalism, and discomfort converge to confront political power. Focusing on the song’s explicit critique of President Bola Ahmed Tinubu, his son Seyi Tinubu, and other prominent political figures, the analysis demonstrates how Abdulkareem renders indistinct the line between music and political discourse through a visual-sonic language that is accusatory, documentary-stylized, and unflinchingly courageous. While building on the lineage …

Witnessing Healing Through Fantasy: Trauma, Community, And Art In A Court Of Thorns And Roses, Alexandria A. Remm

Dialogue: The Interdisciplinary Journal of Popular Culture and Pedagogy

Drawing on theorists such as Bruno Bettelheim, Lucy Bonds, Stef Craps, Dominick LaCapra, and Laura Loumeau-May, this paper explores the role of trauma and healing in Sarah J. Maas’ A Court of Thorns and Roses (ACOTAR) series by examining protagonist Feyre Archeron’s journey. Specifically, Feyre’s journey with trauma and how she heals throughout the series. The analysis highlights how Feyre’s recovery is deeply tied to empathy, her acts of artistic creation, and her evolving relationships with others, especially with those who have also endured their own trauma. In addition to textual analysis, the paper incorporates reader and fan responses—particularly fanart …

The Big Bang Theory’S Blurred (Tele)Vision Of Scientific Ethics: Some Thoughts For Educators Who Want To Change The Channel, Lee-Anne Broadhead, Sean J. Howard

Dialogue: The Interdisciplinary Journal of Popular Culture and Pedagogy

This article investigates the way the popular American television program The Big Bang Theory represents the pursuit of scientific knowledge and reflects on the cultural and educational implications of the show’s contradictory problematization and valorization of the reductionist method at the core of modern Eurocentric science. Drawing on story-lines relating to military research, animal experimentation, and pharmaceutical drug trials, we consider the show’s precarious balance of implicit critique (the consistent exposé of systematically violent, often unethical research) and overt celebration (the presentation of science as “cool,” and its practitioners as flawed but endearing). This tension, we argue, enhances the show’s …

The Batiandi Li Family, Xifu

Zea E-Books Collection

The novel tells the story of six generations of the Li family over the course of nearly a century and a half, a legendary saga. The protagonists of the Li family in various historical stages of the book are searching for their own identity and the position of the family on the road of life. Sometimes they seize opportunities and create temporary brilliance for the benefit and glory of the family, while at other times they submit to fate and follow the tide of history, content to live ordinary lives like common people.

In 1832 the second brother of the …

Interview With Orca Award Winner Donald Weeks; Unl Biochemistry; Biotechnology, Mark Griep, Donald Weeks

UNL ORCA Interview Series

Emeritus Professor Donald Paul Weeks was awarded the ORCA in 2014, a year before he retired. He grew up in a small farm south of Terre Haute, Indiana. In his youth, he participated in 4-H programs that must have sparked an interest in science because he earned his bachelor's degree from Purdue University in 1963. Purdue is about 90 miles north of Terre Haute. Don's doctoral work was at the University of Illinois in Champaign-Urbana for a project about protein synthesis during maize germination. Next, he did postdoctoral work at the Fox Chase Cancer Center in Philadelphia, where his research …

Notes On Reproduction, Seasonality, And Roost Sites For Silver-Haired Bats (Lasionycteris Noctivagans) In Western Nebraska, Joseph W. Paysen, Dawson V. Kosmicki, Keith Geluso

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Silver-haired Bats (Lasionycteris noctivagans) are a migratory species found throughout the United States, southern Canada, and northern Mexico. Throughout their range, Silver-haired Bats roost in various tree species, generally within decaying features like cavities and exfoliated bark. Herein we report on additional reproductive and seasonal data as well as the first data on trees used as roost sites by Silver-haired Bats in Nebraska. We captured individuals along a small tributary of the North Platte River at Ash Hollow State Historical Park, Garden County, Nebraska, and tracked bats to their roosts. At this location, we documented lactation on 17 …