Digital Commons Network^™

A Methodology To Quantify The Shielding Efficiency Of Novel Radiation Shielding Materials, Jenny R. Whiteley, Tyler Heggenes, J.R. Dennison

Utah Space Grant Consortium

Radiation shielding is a common method used to protect spacecraft from the radiation prevalent in the space environment. A current research area of interest is Z-graded shielding, which is radiation shielding composed of various materials layered together based off of the properties associated with the material's atomic number, Z. This approach has the potential to produce new shielding materials that would be lighter and more compact than traditional shielding materials. Utah State University's Material Physics Group developed an experimental setup and analysis methodology to quantify how effectively novel shielding materials blocked beta and gamma radiation. The materials' effectiveness, termed shielding …

Experimental Workflow: Assessing Lead (Pb) Cytotoxicity In Vaginal Epithelial Cells, Alex Grimm, Sagan Wilkinson

Utah Space Grant Consortium

The vaginal epithelium is a highly absorptive mucosal barrier that plays a vital role in defending against pathogens and maintaining reproductive health. However, its permeability also raises concern about the bioaccumulation of potentially harmful elements (PHEs), particularly in relation to products designed for intimate use. Recent studies have identified the presence of heavy metals, including lead (Pb), in a wide range of cosmetic and hygiene products such as tampons. Lead is a well-known toxic element that interferes with essential cellular functions, mimicking biologically important metals like zinc, calcium, and iron.

This study investigates the absorption of lead by an immortalized …

Potential Of Genetic Modification In Brine Shrimp For Biotechnological Applications, Hannah Jones, Lane Law

Utah Space Grant Consortium

Brine shrimp (Artemia salina) are hardy organisms capable of surviving extreme environmental conditions, making them an ideal candidate for genetic modification in biotechnological research. This study investigates the potential of genetically modifying brine shrimp to unlock new possibilities in biotechnology. By integrating foreign genes into their genome, we explore how genetic engineering can enhance their adaptability, stress tolerance, and overall viability, providing opportunities for novel applications in fields such as environmental monitoring, bioengineering, and sustainable aquaculture. Our findings highlight the promise of brine shrimp as a versatile and sustainable platform for genetic modification, opening doors to innovative approaches in biotechnology …

From Forest Floor To Future Food: Cultivating And Engineering Lion's Mane Mushrooms, Chris Morris, Lane Law

Utah Space Grant Consortium

We intend to create a vegan meat alternative by genetically modifying Hericium erinaceus (Lion's Mane mushroom) to express the soy leghemoglobin gene. This gene, commonly used in plant-based meats, contributes both color and umami flavor reminiscent of animal-derived hemoglobin. Our approach involves extracting and sequencing Lion's Mane DNA, identifying viable genomic insertion sites, and applying CRISPR-Cas9 to insert the leghemoglobin gene. Concurrently, we are optimizing lab-based cultivation methods to ensure reliable growth and propagation of both wild-type and genetically modified strains. This project integrates fungal biotechnology, genetic engineering, and sustainable food innovation.

Enhanced 3d Image Reconstruction Using Scattered Light Tomography, Tyler O'Loughlin, Vern Hart

Utah Space Grant Consortium

Coherent diffraction imaging (CDI) is a powerful technique for reconstructing phase shifts occurring in biological samples by capturing the interference between scattered light. These diffraction patterns contain spectral information, where shorter wavelengths (higher spatial frequencies) yield images with enhanced spatial resolution, improving detail and accuracy. However, higher spatial frequencies are located further from the central axis, rendering them fainter and more challenging to measure. To address this, our group developed a gyroscopic CDI system featuring a rotating platform driven by a stepper motor. This platform positions the sample between a broadband light source and a beam profiler, which are mounted …

Cracking The Code For Pcb Cleanup: Pcr Optimization Meets Synthetic Biology, Leptzy Romero, Lane Law

Utah Space Grant Consortium

This study focuses on the construction of a plasmid harboring biphenyl (BPH) genes, with the aim of enabling potential degradation of polychlorinated biphenyls (PCBs). Optimization experiments were conducted to enhance PCR amplification and assembly efficiency. PCR conditions were refined using a primer concentration gradient and by varying magnesium chloride levels through adjustments in reaction buffer volume, resulting in improved specificity and yield. Six BPH gene fragments were successfully litigated into the pSHDY vector using Gibson Assembly, alongside a GA+ positive control. The resulting construct represents a foundational step toward engineering organisms capable of PCB biodegradation.

Vocs In Heat-Stressed Poplar-Mycorrhizae Systems, Luis Valdez, Peter Doust, Kastin Ricord

Utah Space Grant Consortium

Plants release volatile organic compounds (VOCs) as gases into the atmosphere, including small molecules like alcohols, ketones, and terpenes, as well as products of the lipoxygenase (LOX) and the mevalonate (MVP) metabolic pathways.

A Simple Sonication Method For Generating Monodispersed Nanoparticles Of Hydrophobic Antioxidants, Kyle Jackson, David Britt, Yu Huang

Utah Space Grant Consortium

Various hydrophobic antioxidants remain unexplored for the treatment of space radiation and oxidative stress due to their inability to enter the cell without a drug delivery vehicle as their surface properties cause them to suffer from a poor solubility. In this paper you will find a recent breakthrough of a new method to create neat antioxidant nanoparticles free of any surfactant whatsoever vastly improving inherent solubility. These nanoparticles are synthesized monodispersed with a low polydispersity. This is even more suitable for astronauts then other generation methods, as the cocktail is without any solvent or surfactant which can have unknown effects …

Biosignature Analysis In Saline Environments Using The Microfluidic Organic Analyzers For Biosignatures (Moab), Andrew Pack, Parker Jenkins, Jungkyu (Jay) Kim

Utah Space Grant Consortium

This study examines amino acid stability in high-salinity environments to enhance biosignature detection technologies. Using both absorption spectroscopy and capillary electrophoreses (CE), we investigated the survivability of valine and serine in laboratory-created brines simulating those found on celestial bodies throughout the solar system. Our findings reveal a protective effect of brines on amino acids, with reduced degradation rates compared to control samples containing no salts. During the 12-day observation period, both polar and non-polar amino acids showed enhanced stability in high-salinity environments, though non-polar amino acids exhibited more pronounced benefits from this protective effect. Valine concentrations in saline conditions decreased …

Dynamic Riskscapes For Prey: Disentangling The Impact Of Human And Cougar Presence On Deer Behavior Using Gps Smartphone Locations, Heather N. Abernathy, Mark A. Ditmer, David C. Stoner, Kent R. Hersey, Kathryn A. Schoenecker, Pat J. Jackson, Kristin N. Engebretsen, Julie K. Young, George Wittemyer

Wildland Resources Faculty Publications

Prey species adjust their behavior along human-use gradients by balancing risks from predators and humans. During hunting seasons, prey often exhibit strong antipredator responses to humans but may develop tolerance in suburban areas to exploit human-mediated resources. Additionally, areas with high human activity may offer reduced predation risk if apex predators avoid such locations. This study examined mule deer Odocoileus hemionus behavioral responses to risks from humans and their primary predators, cougars Puma concolor, contextualized by differences in risk levels between study sites, individual risk exposure, and human habituation. We framed our investigation using three non-mutually exclusive hypotheses: (H1) …

Art Historical Research Of The Intercession Of Christ And The Virgin, Attributed To Lorenzo Monaco, Lauren Watts

Curiosity

This research examines The Intercession of Christ and the Virgin, a painting attributed to Lorenzo Monaco. The painting is tempera on canvas, and is housed at the Metropolitan Museum of Art. This research looks at the painting through a phenomenological lens in context of its original site, iconographic themes, and feminine spirituality. The research posits that the painting’s intercessory figures—Christ and the Virgin Mary—construct a narrative amplifying themes of feminine spirituality, challenging the misogynistic structures of quattrocento Florentine ecclesiastical culture while remaining within the bounds of contemporary orthodoxy. Studying the painting at Metropolitan Museum facilitated in-depth visual analysis, supplemented by …

“Gang, We Have A Mystery On Our Hands!”: A Folkloristic Approach To Conspiracy Thinking In Scooby-Doo! Mystery Incorporated, Sydney K. Brooks

All Graduate Reports and Creative Projects, Fall 2023 to Present

In this thesis I examined how the 2010 children’s television show Scooby-Doo! Mystery Incorporated both utilizes and critiques conspiracy, embedded within its mystery-solving structure. Through a close analysis of the members of the gang—Fred, Daphne, Velma, Shaggy, and Scooby-Doo—I broke down their individual behaviors, interactions, and contributions to conspiratorial belief. I then transitioned into a case study of the episode “Where Stalks the Scarebear,” showcasing its connection to larger real-world conspiracy narratives, particularly those related to corporate and environmental cover-ups. Finally, I examined the show as a complete narrative, reflecting on its complex, serial exploration of conspiracy through the framework …

Aircraft Water And Waste Systems Curriculum Alignment For Updated Airmen Certificate Standards (Acs), Myles Miller

All Graduate Reports and Creative Projects, Fall 2023 to Present

The purpose of this project was to create a curriculum that aligns with the updated Airmen Certificate Standards (ACS) related to aircraft water and waste systems. The curriculum was designed to align with the FAA standards outlined in the ACS section II. Airframe Subject O. Water and Waste Systems. The curriculum includes components, operation, inspection, and servicing requirements for potable water and lavatory waste systems. The curriculum should equip students with the ability to identify, assess, and mitigate risks associated with lavatory waste systems, and the ability to locate and explain the procedures for servicing water and waste systems. The …

Engineering Planktonic And Biofilm Microalgae Systems For Productivity, Power Requirements, Cost, And Scalability, Dallin Chugg

All Graduate Reports and Creative Projects, Fall 2023 to Present

Microalgae cultivation offers dual benefits as an effective wastewater treatment method and a sustainable source of valuable bioproducts, such as biofuels, bioplastics, and feedstocks. This approach supports sustainability by transforming waste into high-value products while minimizing environmental impact. However, scaling microalgae cultivation to industrial levels presents significant challenges, particularly in optimizing harvesting efficiency, reducing mixing and transport costs, and managing large water requirements.

This report compares the productivity, scalability, cost, and energy requirements of two primary cultivation systems: planktonic and biofilm. Planktonic systems, such as open raceway ponds (ORPs), excel in light distribution and nutrient uptake due to continuous mixing, …

Evaluating The Economic Viability Of Feeding Hydroponic Barley Fodder To Growing Wethers, Fallon Johnson

All Graduate Reports and Creative Projects, Fall 2023 to Present

As the livestock industry combats challenges including rising feed costs and ensuring sustainable production practices, some attention is being given to hydroponic fodder as a feed source. Hydroponic fodder offers a potential alternative to traditional feed sources. Research has demonstrated hydroponic fodder production has increased water efficiency while providing a sustainable green feed source throughout the year. This study seeks to understand how using hydroponically produced barley fodder in a total mixed ration for growing wethers compares economically to feeding traditional feed sources. A stochastic simulation model is used to determine the expected total feed costs, costs of gain, and …

"Death Is The Fifth [Season], And Master Of All": Necropolitical Violence And/As Environmental Violence In The Fifth Season, Mason T. Goodrich

All Graduate Reports and Creative Projects, Fall 2023 to Present

While many scholars have already described N.K. Jemisin’s Hugo Award-winning speculative novel The Fifth Season as one that highlights intersections between race, settler-colonialism, neoliberalism, and, most frequently, climate change, I apply a necropolitical lens to The Fifth Season in order evaluate a relationship that exists between systemic violence and environmental degradation. The Fifth Season depicts a socially inscribed relationship between an othered race of humans, called orogenes, and the land, anthropomorphized as “Father” Earth. Orogenes have a paradoxical social status: they are simultaneously feared and revered for their ability to control the Earth. This paradox is the impetus for many …

“Floptok Is Not A Trend. It’S A Lifestyle”: Camp, Performativity, And Community Dynamics In An Adolescent Tiktok Subculture, Drake Hansen

All Graduate Reports and Creative Projects, Fall 2023 to Present

Floptok is an online meme-sharing community or subculture that began to take shape in 2021, united by a particular sensibility and set of memetic materials. To outsiders, Floptok is seen as a loud, brash, and often abrasive community whose memes, characterized by low-quality audio and video, often feature “icons”—a range of invented characters and real people—and audio of pop songs heavily edited to feature hypersexual lyrics from the rapper CupcakKe, as well as portions of the 2019 Chinese pop song “Yěhuāxiāng.” This thesis built on scholarship in digital and young people’s folklore in an ethnographic case study of Floptok’s humor …

Motherhood Within The Patriarchal Family: An Analysis Of “Frankenstein” And “The Scarlet Letter”, Yasamin Osqueezadeh

Undergraduate Honors Capstone Projects

Being a pivotal period in Western feminist history, the literary community in the 18^th century introduced pioneering feminists, the most famous of which is Mary Wollstonecraft, who called for a feminist revolution with A Vindication of the Rights of Women. Following the publication of A Vindication of the Rights of Women and other subsequent feminist papers, are Mary Shelley’s 1818 Frankenstein and Nathaniel Hawthorne’s 1850 The Scarlet Letter, two renowned pieces of Gothic literature. Although the two novels may seem disconnected, both Frankenstein and The Scarlet Letter engage in feminist arguments and critiques of the patriarchy in …

Investigation Of Immune/Performance Trade-Offs In Neonate Children's Pythons (Antaresia Childreni), Ellie Hartman

Undergraduate Honors Capstone Projects

Energetic costs and constraints are key considerations when analyzing an organism’s life history and may require trade-offs to be made between different life history traits. One of these trade-offs occurs between investment in immunity and performance. The purpose of this study is to discover if this trade-off influences behavior in neonate Children’s pythons (Antaresia childreni). We hypothesize that snakes undergoing an immune response will have reduced behaviors promoting survival. To test this hypothesis, neonate Children’s pythons were randomly assigned to receive an immune challenge of keyhole limpet hemocyanin (KLH) or a vehicle injection as a control. Two days …

Adaptation Of Influenza A Virus Strains A/Anhui/1/2013 (H7n9) And A/Shanghai/1/2013 (H7n9) For Development Of Effective Mouse Models, Spencer T. Mullen

Undergraduate Honors Capstone Projects

The emergence of avian Influenza A (H7N9) virus strains in humans poses a significant threat to human health globally due to their pandemic potential, limited human immunity, and lack of virus-specific interventions. This capstone aims to address some of the limitations in antiviral research regarding Influenza A H7N9 virus by adapting two low-pathogenic virus strains A/Anhui/1/2013 (H7N9) and A/Shanghai/1/2013 (H7N9) to BALB/c mice through sequential passaging through lung tissue. Following 12 serial passages, increased virulence was observed as evidenced by increased virus replication, increased weight loss, and increased mortality in infected mice. Titration of the initial non-adapted virus isolates were …

Survey Of Insect Pests On Cut Flowers In Utah, Elliot Roberts

Undergraduate Honors Capstone Projects

Cut flower production is a relatively new industry in the state of Utah, gaining momentum by 2020. However, little research concerning management of the crops and their pests has been conducted. One issue producers face are insects that harm the plants in ways such as feeding damage and transmission of diseases. Currently, it is unknown which insects target different species of cut flowers in Utah. Morphological identification of genera and species is often difficult or impossible because of the small size of many of the insects and minute differences between species. This project uses PCR and DNA sequencing to identify …

Creating A Stat2 Knock-Out Rat With Crispr/Cas9 Using I-Gonad, Isabella Dejesus

Undergraduate Honors Capstone Projects

Through the use of genetically modified animals, a more holistic understanding of physiologic responses to various diseases and pathologies can be obtained^7,19. The STAT2 gene encodes a protein called Signal Transducer and Activator of Transcription 2 and is an excellent target for genetic manipulation due to its essential role in type I and III interferon signaling pathways¹¹. A member of the STAT family of transcription factors, this protein is directly involved in mediating cellular responses to various cytokines and growth factors, particularly those related to the innate immune response¹¹. While the STAT2 signaling pathway …

Climate Prediction As An Adaptive Force-Multiplier: Reasons For Hope In A Rapidly Changing World, Matthew D. Laplante

All Graduate Theses and Dissertations, Fall 2023 to Present

It's not unreasonable to feel pessimistic about our future under climate change. But "believing the science" doesn't require you to accept that we are headed toward apocalypse. It is true that human-caused climate change is real, it is underway, and our societies face many increased risks because of it. But that's just part of what climate science tells us about our future world. This same field is responsible for the recent and rapid development of tools and techniques that permit the identification of patterns in our oceans and atmosphere that will aid us in making increasingly accurate predictions about climate—the …

Ethical Concerns And Implications Of Expanded Carrier Screening, Emily Andres

Undergraduate Honors Capstone Projects

The rapid evolution in the field of genetics is often met with uncertainty and skepticism. With the advancements in genetic technologies, expanded carrier screening (ECS) has emerged as a powerful tool in reproductive medicine. Traditionally, carrier screening was provided less broadly, often relying on ethnic-based approaches. However, further advancements have deemed this practice no longer equitable or widely accepted. While ECS provides prospective parents with insight into their genetic risk and may prevent severe genetic conditions, it also raises serious ethical questions for many. These concerns span medical, political, and societal facets including medicalization, defining severity, abortion, legislation, insurability, the …

The Impact Of Lactoferrin And Iron-Enriched Whey On Iron Absorption, Gastrointestinal Symptoms, And Menstrual Health In Women, Mia Dustin

Undergraduate Honors Capstone Projects

Iron is an essential trace mineral involved in oxygen transport, energy metabolism, and cellular function, yet deficiency remains prevalent among women of reproductive age. In the U.S., approximately 20% of women aged 18-45 years fail to meet daily iron requirements due to lack of iron consumption in the diet, menstrual blood loss, or intense exercise, often leading to anemia, fatigue, and cognitive impairment. While ferrous sulfate is a common form of iron supplementation, it frequently causes gastrointestinal discomfort. Researchers have explored lactoferrin, a glycoprotein with immune and iron-binding properties, as an adjunct to traditional supplementation. This study examines the effects …

The Stem Gender Gap: Can It Be Closed?, Makenna Roberts

Undergraduate Honors Capstone Projects

Despite increasing gender parity in many professional fields, women remain underrepresented in STEM industries, particularly in math-intensive areas such as engineering, computer science, and physics. This report explores the persistent gender gap in STEM through analysis of two data sources: gendered differences in the US national Scholastic Aptitude Test (SAT) performance and post-graduate employment patterns among scientists and engineers.

The first portion of the analysis examines SAT score data from 2018 to 2024, with a focus on high-performing test-takers. Using Python and R, data was extracted and visualized to compare male and female performance on the Math and Evidence-Based Reading …

Impacts Of Reef Fish Length On Foraging Radius: Exploring Behavioral Patterns Within A Patch Reef Ecosystem, Kilia Brawand

Undergraduate Honors Capstone Projects

Reef fish exhibit various behaviors upon the Great Barrier Reef. One of these behaviors includes that of limiting their grazing distances from a patch reef refuge to a certain maximum distance in order to avoid predators. This is defined as a ‘foraging radius’ or ‘margin of safety’. This ‘foraging radius’ varies among fish due to many factors- including species, morphology, ontogenesis, habitat complexity, and importantly: speed. Quicker fish can outswim predators to safety more efficiently than slower fish, and can therefore afford to travel farther distances to forage. Speed varies among fish for a number of reasons, including fish size …

Phylogeny And Historical Biogeography Of Uroleucon Aphids, Audrey Michelle Mullen

Undergraduate Honors Capstone Projects

The aphid genus Uroleucon (Aphididae: Aphidinae: Macrosiphini) is a diverse group of about 230 species found globally in most temperate regions, principally in the northern hemisphere. Only 23 species are described from the southern hemisphere, in South American temperate regions such as Chile, Argentina, and Peru. However, the origins of the South American species are unknown, as are the relationships of these taxa to northern hemisphere Uroleucon species. This study seeks to establish the relationships between Uroleucon aphids native to South America and their North American and Eurasian counterparts using genetic data. We use phylogenetic analysis of cytochrome c oxidase …

Establishing Methods For In Vitro Static Culture Of Gut Microbiomes For Nutritional Intervention Studies, Jeremy Mathew Case

Undergraduate Honors Capstone Projects

Lipid oxidation products (LOPs), which form during high-heat processing of oils common in Western diets, are known to cause inflammation and cellular damage. While LOPs have been implicated in exacerbating colitis and promoting colon tumorigenesis in mouse models, their direct impact on the gut microbiome remains poorly understood. This capstone project aimed to develop a low-cost in vitro protocol to culture the mouse gut microbiome under anaerobic conditions, enabling future investigations into the direct effects of bioactive dietary compounds such as LOPs. The study also assessed whether viable microbial communities could be recovered from fecal samples stored at -80°C. Fecal …

Reevaluating The Drumian Carbon Isotope Excursion (Dice) In Western-Central Utah, Michelle M. Norman

Undergraduate Honors Capstone Projects

The Drumian Stage of the Cambrian Period is defined by the First Appearance Datum (FAD) of the cosmopolitan trilobite Ptychagnostus atavus in 504.5 Ma strata deposited on the slope and shelf of the Laurentia margin. The Drumian Global Stratotype Section and Point (GSSP), showing the best preserved example of P. atavus compared to global outcrops, is defined in the Drum Mountains of west-central Utah. Due to the inconsistent nature of fossil preservation, researchers have sought secondary proxies to identify Drumian-aged strata in the absence of age-diagnostic fauna. One key proxy is the Drumian Carbon Isotope Excursion (DICE), an ~-2.5‰ carbon …