Digital Commons Network^™

Kinetic Analysis Of Degradation And Maximum Catalytic Capacity For Plant Peroxidase Enzymes, Hayden Stollings

Liberty University Research Week

In 2006, the Environmental Protection Agency (EPA) began investigation into the “forever chemicals” known as PFAS. PFAS, which stand for “per- and polyfluoroalkyl substances,” are a highly stable and toxic compound that were mass produced throughout the 1900’s and was commonly found in common kitchenware, carpets, furniture and even produced in industrial processes.

The function behind PFAS’ stability lies in the abnormally strong Carbon-Fluoride bond, which explains for its initial functionality. Moreso, PFAS can withstand natural degradation in the environment, leading to buildup. Exposure to certain PFAS have been linked to health problems such as increased cholesterol, thyroid issues, reproductive …

Characterizing Novel Peroxidase Activity Through Enzyme Kinetics And Equilibrium Binding, Marika Yelle

Liberty University Research Week

Per- and polyfluoroalkyl substances (PFAS) are persistent environmental contaminants, motivating the exploration of peroxidases as potential bioremediation catalysts. This study spectroscopically characterized three peroxidases, with a focus on Pumpkin Skin Peroxidase (PKS). Initial characterization assessed PKS equilibrium binding with various ligands to determine dissociation constants (Kd) for each ligand-enzyme interaction. To characterize PKS catalytic activity, guaiacol oxidation was monitored, with parallel KF trials modelled by Michaelis-Menten kinetics, revealing fluoride-induced increases in Km and Vmax, consistent with an inhibitory effect on substrate binding and catalytic turnover. These findings provide insight into the function of PKS and its potential for environmentally relevant …

Investigating The Role Of The Active-Site Metal In Plant Peroxidase Catalysis, Alexandra Knight

Liberty University Research Week

This study investigates how replacing the native iron heme with manganese or cobalt protoporphyrins affects the enzymatic activity of horseradish (HRP), pumpkin skin (PKS), and butternut squash (BNT) peroxidases. A heme extraction protocol was adapted for generating apoenzymes by removing the native iron heme cofactor, and extraction was confirmed using UV-vis spectroscopy. While initial reconstitution of apo-HRP with manganese protoporphyrin IX appeared to be incomplete based on UV-vis analysis, the results suggested that manganese incorporation modifies the spectroscopic characteristics of the native enzyme. Comparing horseradish, pumpkin skin, and butternut peroxidases will reveal potential differences in metal-dependent activity and stability among …

Morphological Evaluation Of Cadaveric Tissues Integrity Using Histology Staining, Jumana Rizk, Levon Shukrian, Maria Mendoza Lopez, Shanice Rerrie

Liberty University Research Week

The transition from gross anatomical dissection to microscopic evaluation is essential for a comprehensive understanding of human biology. While systemic anatomy reveals the macroscopic organization of the body, histology provides insight into cellular structure and tissue integrity. This study aimed to bridge these disciplines through histological assessment of cadaveric tissues. Our objective was to determine whether tissue samples after prolonged fixation could be processed and stained to meet standards for histology education. Tissue samples of the cerebral cortex, renal cortex, liver lobe, and skeletal muscle were obtained from two cadaveric donors, one male and one female. Tissues were processed, embedded …

Spectroscopic Characterization Of Pfas Ligands Binding To Novel Plant Peroxidases, Vladimir Bogatov

Liberty University Research Week

No abstract provided.

Elephant's Toothpaste: A Statistical Investigation Of The Yeast-Catalyzed Decomposition Of Hydrogen Peroxide, Annaliese Defelice

Liberty University Research Week

Catalase is the main enzyme in yeast that catalyzes the popular “elephant’s toothpaste” reaction. Elephant’s toothpaste reactions often proceed using an iodide or yeast catalyst, but iodine is favored for ease of quantitative analysis. There remains little statistical data on the yeast-catalyzed hydrogen decomposition reaction. The relationship between reagent amounts and reaction rate was measured by manipulating reagent quantity while maintaining other variables. The results were graphed and fitted for linearity, indicating the relative relationship between each reagent and the overall reaction rate. There were strong positive correlations between yeast and hydrogen peroxide concentrations and reaction rate. Augmenting the volume …

Investigating Nutritionally Derived Treatments For Metabolic Disease: Enterolactone And Its Effect On Glp-1 And Pyy Secretion, Aidan Clancy

Liberty University Research Week

Gut-derived hormones such as glucagon-like peptide-1 (GLP-1) and peptide YY (PYY) play essential roles in maintaining glucose homeostasis and appetite regulation. These hormones are primarily secreted by enteroendocrine L cells in response to nutrient signaling in the gut. Emerging evidence suggests that polyphenolic compounds and their metabolites may influence gut hormone secretion. Enterolactone (ENL), a microbial metabolite of the dietary lignan, matairesinol, is of particular interest due to its reported anti-diabetic properties. In this study, we propose to test whether ENL can modulate the secretion of GLP-1 and PYY in L cells in vitro, thereby identifying a potential mechanism by …

Bacterial Purification Of Hat Enzymes From Cryptococcus Neoformans: Esa1 And Gcn5 Purification, Manasi Joshi, Andrew Wisley

Liberty University Research Week

Gene expression in eukaryotes is tightly regulated by post-translational modifications. Histone acetylation is an epigenetic modification associated with increased transcription. The putative histone acetyltransferase (HAT) in the fungus Cryptococcus neoformans, Something About Silencing 3 (SAS3), has been a novel research target due to its potential role in virulence that causes nearly 112,000 to 625,000 annual deaths worldwide through cryptococcal meningitis. Although SAS3 homologs acetylate core histone 3 in mammalian organisms, recombinant SAS3 has not yet demonstrated HAT activity. Previously, an established human HAT p300 was used as a positive control to validate enzymatic conditions for HAT assays. However, using known …

Offspring Cognitive And Neurobiological Outcomes Influenced By Maternal Dietary Patterns, Emma Whatley, Abigail Frommack, Karina Long, Sarah Nelson

Liberty University Research Week

The impact of maternal diet on offspring neurodevelopment is a relatively new field, and its areas of focus are vast. The field is predominantly studied and understood through the impacts of an unhealthy diet, the maternal Western diet (WD), but there is very little research on healthy diets like the maternal Mediterranean diet (MD). The general healthiness of the diet and some limited research support that this diet could have beneficial impacts on offspring. This research aims to explore the impacts of a maternal MD on adult offspring. We hypothesize that the maternal MD will enhancing cognitive performance in learning, …

Effects Of Environmental Xenoestrogens On Immune System Development In Mus Musculus, Broderick Adams, Annaliese Defelice

Liberty University Research Week

Prenatal exposure to environmental xenoestrogens may influence immune system development and contribute to autoimmune disease risk. This study investigates whether Bisphenol-C (BPC), a common substitute for Bisphenol-A (BPA), exhibits similar estrogenic and immunomodulatory effects, and whether it can cross the placental barrier. Using a controlled murine model, dams are assigned to multiple treatment groups receiving estradiol, BPA, or BPC via defined administration methods. Offspring are analyzed at gestational day 17, with collection of amniotic fluid, fetal tissues, and serum. Immune markers, including IL-6 and anti-dsDNA antibodies, are quantified ELISA and flow cytometry, while mass spectrometry is used to confirm BPC …

Impacts Of Maternal Diet On Offspring Affective Behavior And Brain Morphology, Abigail Frommack, Emma Whatley, Karina Long, Sarah Nelson

Liberty University Research Week

The field of maternal dietary impacts on offspring neurodevelopment has been established over the past 30 years, and since its establishment it has grown rapidly. The research shows that maternal diet significantly impacts offspring neurodevelopment, with those effects lasting until adulthood. Most research in this field focuses on the detrimental impacts of a Western Diet (WD), but little research exists on the beneficial impacts of a healthy diet. This research aims to close that gap by assessing a healthy diet and its impact on adult offspring. We hypothesize that a maternal Mediterranean diet (MD) will have positive impacts on the …

Analysis Of The Effects Of Phytocannabinoids Cannabichromene (Cbc), Cannabidiol (Cbd), And Cannabigerol (Cbg) On The Enzyme Faah, Rachel Duncan

Liberty University Research Week

No abstract provided.

Forensic Differentiation Of Feline Hair, Gabriel Dunn

Liberty University Research Week

No abstract provided.

Histological Quality Of Fresh And Pre-Fixed Tissue, Rebekah Satalino, Andrew Hodges, Bright Danso, Gretchka Mair, Kingsley Ampong

Liberty University Research Week

The quality of a tissue sample used for histological analysis robustly influences the accuracy of scientific results and diagnostic interpretation. For fresh tissue samples, the duration between termination and fixation is a major determinant for tissue quality going forward as fixation halts tissue degradation. The condition of the fixed tissue before subsequent processing can have a pronounced effect on staining characteristics and cellular component integrity as examined under the microscope. However, while fresh tissue is frequently considered best, many institutions may only have access to pre-fixed tissue for training or research purposes. The aim of this research is to compare …

Impacts Of Interspecific Competition On Stress And Body Condition In A Montane Salamander (Plethodon Hubrichti), Jason Porter, Allison Carmen

Liberty University Research Week

No abstract provided.

Quantifying Biogenic Amines In Anaerobic Porcine Liver Decomposition For Improved Pmi Estimation Using Gc/Ms, Shanice Rerrie, Faith Ekoh

Liberty University Research Week

Postmortem interval (PMI) estimation remains a central challenge in forensic science, particularly during the early stages of decomposition. Quantifying biochemical changes during tissue breakdown has emerged as a promising approach to improve accuracy in PMI determination. This study expands on earlier research that quantified the biogenic amines cadaverine (CAD), putrescine (PUT), and methylamine (MEA), which result from bacterial amino acid decarboxylation during decomposition. It specifically examines how these compounds form under anaerobic conditions over a prolonged 30-day period. Porcine liver, serving as a human tissue analog, was decomposed in sealed anaerobic chambers. Tissue samples were collected at regular intervals, homogenized, …

Euripides’ Medea As An Existential Protagonist: Comparing Conceptualizations Of Fate In The 400s Bc And The 1800s Ad, Johanna Bryant

Liberty University Research Week

No abstract provided.

The Mentality Of Women: The Accuracy Of Mental Illness Treatment In Dreaming In Cuban, Jadyn Brueske

Liberty University Research Week

No abstract provided.

Beyond The Homefront: The Transformation Of Women’S Military And Support Roles, 1941–1953, Madison Kelly

Liberty University Research Week

This paper examines the evolving roles of women in American military conflicts from the Revolutionary War through the Vietnam War, highlighting both their contributions and the societal constraints they faced. It emphasizes the transformative impact of World War II, when women entered industrial jobs, military service branches, and nursing roles in unprecedented numbers, symbolized by figures like “Rosie the Riveter” and organizations such as the WAC, WAVES, WASP, and Army Nurse Corps. The study also explores the regression of women’s roles during the Korean War and the gradual reemergence of impactful contributions during the Vietnam War, including nursing, Red Cross …

Examining Carroll’S Alice In Wonderland And Through The Looking Glass, And What Alice Found There: A Christian Calling To Spiritual Childhood, Kristen Hess

Liberty University Research Week

"Examining Carroll’s Alice in Wonderland and Through the Looking Glass, and What Alice Found There: A Christian Calling to Spiritual Childhood" dives into the positive and negative childlike habits that Alice, a representative of children and childhood, embodies and how Christians should identify and emulate her positive childlike behaviors in order to best fulfill their roles as spiritual children of God. Because Christians are children of God according to Romans 8:16, it is vital for Christians, like children, to understand the world around them, learn about themselves and others, and enjoy physical and mental play and recreation. Lewis Carroll found …

Inclusion May Affect Marching Band Members Of Black Universities Differently Than Members Of White Universities: Narrative Inquiry, Derrick Yates

Liberty University Research Week

There is a lack of research on the emotional connection and support students of Historically Black Colleges and Universities may seek through their band experience versus students of Predominantly White Institutions. Some studies demonstrate that those who participate in music ensembles express heightened self-esteem, a sense of connectedness, and a positive impact on their mental and psychological well-being. This narrative inquiry research study focuses on the unexplored perspectives of three band members from historically black and three predominantly white university marching bands, regarding their emotional connections to their programs and the emotional connections and support they receive from them. The …

Paws And Predictions: Interpreting Intraspecific Cat Social Interactions Through Facial Signals, Levi Neal, Lauren Scott, Gosia Zobel, Brittany Florkiewicz

People and Animals: The International Journal of Research and Practice

There has been limited research on humans’ ability to perceive and predict social interactions among cats using facial signals. This area is crucial to explore since conflicts between cats often cause significant stress for their guardians. By evaluating individuals’ skills in understanding cat interactions, researchers can develop tools to help guardians predict affiliative and nonaffiliative behaviors, leading to effective intervention strategies for multicat households. We distributed a survey to individuals subscribed to the Companion Animals New Zealand newsletter to assess cat guardians’ effectiveness in perceiving and predicting various social interactions among cats. We hypothesized that guardians with one or more …

Mother-Daughter Ties Across Borders: Identity And Connection In Dreaming In Cuban, Alvaro Ricardo Larrea Salazar

Liberty University Research Week

This project examines how trauma, memory, and political displacement shape generational identity in Cristina García's Dreaming in Cuban. I argue that García presents memory as both a bridge and a barrier within the matrilineal line of Celia, Lourdes, and Pilar, ultimately suggesting that reconciliation across political and cultural divides is possible only through acknowledgment rather than suppression of inherited trauma. While Celia’s devotion to the Cuban Revolution and her nostalgic attachment to lost love root her identity firmly in the past, Lourdes responds to revolutionary violence and exile by rejecting her heritage and embracing American capitalism as a form of …

Purposes For Sacred Song In Eighteenth-Century British Colonial America, Merrily Kelsey

Liberty University Research Week

In eighteenth-century colonial America, the colonists sang sacred songs for several reasons which they identified in song text, song book introductions, journals, sermons, and several other places.

Theater Of The Fright, Carolyn Wilkerson

Liberty University Research Week

In the genre of horror, there is an unrelenting desire to continuously push the boundaries of the acceptable and find what the next “biggest scare” might be. While this oftentimes works well for those making money from creations such as the latest films and novels, the struggle remains to forever up the ante and outdo the previous iterations. That, therefore, leaves the question of what exactly could continue to drive forward the horror genre if, as taken in a looser meaning from Ecclesiastes 1:9, there is nothing new under the sun. This presentation will showcase the behind-the-scenes of how horror …

The Lakota Sioux And The U.S.: What Went Wrong?, Blake Rackley

Liberty University Research Week

No abstract provided.

Transnational Beings: Corner Store Entrepreneurship Of Mena Immigrants Of The Third Wave, Gabriel Al-Shaer

Liberty University Research Week

No abstract provided.

A Created Longing: A Textual Analysis Of Sehnsucht, Hope Dornfeld

Liberty University Research Week

The German concept of Sehnsucht is expressed explicitly in several musical selections from the Romantic era; however, the emotional state it represents is implicit in a much greater field of music, poetry, and prose, crossing a wide variety of styles, genres, and periods of history. The concept first gained popularity through the writings of Goethe and Schiller, and was employed in poetic, musical form through the works of the German Romantic composers. Significant research exists on the philosophical and theoretical implications of Sehnsucht . However, a qualitative textual analysis of specific song texts has not been explored in a great …

Essai D'Une Histoire RaisonnéE De La Philosophie PaïEnne-Volume 1, Alexandre Kojéve

Hannah Arendt Marginalia - All

[Paris]: Gallimard, [1968-1973]

Call # : B172.K6 V.1

Library has v.1 & 2 only ; v. 1 has light underlining and endpaper notes

PDF Information : 1.4 MB, 6 Pages

Real World Fertility: From Participatory Research To Clinical Trial, Belinda Tan, Azure Grant, Ayla Barmmer

Oxford ICSB

Nutritional supplements are widely popular for female reproductive health, but their ingredients are typically studied in isolation in the laboratory. Finished products make claims based on these isolated studies, creating a gap in which impact of multi-nutrient formulas in the real world are not investigated, largely due to high research costs. Decentralized clinical research methods are modernizing clinical trials, leading to affordable, efficient evidence generation in large representative populations. Utilizing a decentralized research platform, we tested the hypothesis that specific supplement protocols would be associated with improved female health and fertility in a real world cohort. We present a novel …