Digital Commons Network^™

Low-Cost Ai-Powered Biometric Monitoring For Astronaut Health: A Feasibility Study Using Open-Source Models, Tawananyasha Dzenga

Utah Space Grant Consortium

Context: Human spaceflight presents unique physiological challenges (microgravity, radiation, isolation) requiring careful health monitoring for mission success. Key systems affected include cardiovascular, musculoskeletal, and neurovestibular. Continuous monitoring is vital, especially for long -duration missions.

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 …

Advancing Faecalibacterium Prausnitzii Growth To Mitigate Psychological Stressors In Space, Alina Loseva, Lane Law

Utah Space Grant Consortium

Isolation and Confinement are two of the five main hazards of human spaceflight identified by NASA, leading to sleep loss, circadian desynchronization, and mental health issues such as depression and anxiety. These conditions can impair intestinal barrier function and decrease populations of butyrate-producing bacteria like Faecalibacterium prausnitzii, increasing the risk of stress-related brain disorders. Different fiber sources in diet can affect the growth and butyrate production of F. prausnitzii. This study reviews existing data on F. prausnitzii's fiber response and suggests new fiber combinations for testing, aiming to prevent reductions in F. prausnitzii populations and mitigate psychological disorders in astronauts, …

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.

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 …

Transportation’S Influences On Wellbeing: A Literature Review And Scoping Framework, William Bouck, Patrick Singleton, Louis Alloro, Kim Clark

Curiosity

This study investigates the relationship between transportation and wellbeing: the conditions humans need to flourish at all levels. Using the results gleaned from our literature review of 44 articles, we found correlations linkages between transportation elements and components of physical, psychological, economic, and social wellbeing. These transportation factors affected overall wellbeing, not merely wellbeing during travel. We find that active travel, followed by public transit, are the best travel modes for wellbeing, and that congestion, pollution, and transport disadvantage harm wellbeing. Our findings also indicate that multimodal, people-focused infrastructure corresponds to higher wellbeing. Generally, the four areas of wellbeing we …

Women And Finances − What Utahns Need To Know: A 2025 Update, Robyn C. Blackburn, Susan R. Madsen

Marketing and Strategy Faculty Publications

The history of Utah women and finances shows how various policies, societal beliefs, and behaviors impact the financial standing of women in the state. Upon the arrival of pioneers from The Church of Jesus Christ of Latter-day Saints to the Salt Lake Valley in the 19th century, 41 women were allocated lots during the initial distribution of the land, including single, widowed, and “head of household” women whose husbands were away.¹ Interestingly, around the same time, the Oregon Donation Act of 1850 incentivized female migration to the West by allowing women land ownership rights. Additional federal land laws, such …

Tax Increment Financing: A History And Analysis Of Its Success And Failure, Justin Cederlof

All Graduate Reports and Creative Projects, Fall 2023 to Present

Tax increment financing (TIF) is used by cities and towns to subsidize projects within their jurisdictions. The name derives from the growth in the tax base that a (re)development is theoretically responsible for. The increase in tax revenue is directed to funds to pay for the project. TIF is used in 49 U.S. states and each state has unique legislation for its use of it, though there are large similarities between states on how it’s implemented. Research suggests mixed results with whether or not the increase in the tax base is enough to pay off how much money went toward …

Projects In Lighting Design And Technical Direction, Hannah Rose Whorton

All Graduate Reports and Creative Projects, Fall 2023 to Present

A report of realized lighting design, projection design, and technical direction theatre projects.

A Pavlovian, Conditioned-Reinforcement Approach To Reducing Impulsive Choice, Katherine Garland

All Graduate Theses and Dissertations, Fall 2023 to Present

Persistent impulsive choice (the preference for a smaller-sooner over a larger-later reward) is associated with consequential life outcomes. Procedures that reduce nonhuman impulsive choice have long training durations that may reduce their translational utility. The purpose of this experiment was to test a new behavioral intervention to reduce impulsivity that requires few sessions to implement. Delay-bridging stimuli (stimuli presented during the delay to a reward) have been shown to reduce impulsive choice, but delay-bridging stimuli may also be aversive. Conditioned stimuli (CS) established through Pavlovian training are, on the other hand, attractive, potentially even functioning as a conditioned reinforcer (CR). …

The Desert Shall Rejoice: Lds Relational Values And Multispecies Justice In The Intermountain West, Sarah A. Woodbury

All Graduate Theses and Dissertations, Fall 2023 to Present

In the American West, climate change is shifting weather and climate patterns in ways that may dramatically change lands, livelihoods, and communities. In the face of these threats, conservationists and local communities must work collaboratively to ensure that environmental and human communities are healthy enough to weather approaching shifts. Church of Jesus Christ of Latter-day Saint (LDS) values, practices, and histories strongly influence the Intermountain West, yet there is little research on LDS environmental values and perceptions. This study seeks to answer questions that work in this gap. It documents the knowledge and values of communities in the Intermountain West …

Strategies For Writing Synthesis To Learn: A Case Study Among Sixth-Grade Social Studies Students, Kalie A. Chamberlain

All Graduate Theses and Dissertations, Fall 2023 to Present

Writing instruction that emphasizes strategy use helps students become better writers, especially when tackling difficult writing tasks, such as writing from sources or writing syntheses. Strategic writing instruction also supports student learning in content areas like social studies. This project examined whether Strategies for Writing Synthesis to Learn (SWSL), a mode of strategic writing instruction developed by researchers in Spain, would be effective in a new context. It also sought to understand how SWSL was perceived by students and teachers. A mixed-methods case study was used to explore both quantitative (e.g., student growth) data and qualitative (e.g., student and teacher …

Screening Of A Diversity Of Legumes And Non-Legumes Forb Species At Five Strategic Locations Across Utah For The Development Of Smart Foodscapes, Surbhi Verma

All Graduate Theses and Dissertations, Fall 2023 to Present

Grass-dominated rangelands in the Western United States often lack sufficient protein for pregnant cows after grasses mature in mid- summer, leading ranchers to rely on expensive feed supplements such as protein cubes or alfalfa hay. The goal of this study was to screen 27 perennial legume and forb species with the potential to remain green into late summer and provide sufficient protein to supplement cows on grass-dominated rangeland. Three experiments were carried out to understand germination of species, plant establishment and persistence at five Utah locations, and agronomic characteristics. The seed of five hard-to-germinate species were studied for the ability …

Development Of The Sexual Mindfulness Measure For Abstinent Persons, Kaitlyn Zito

All Graduate Theses and Dissertations, Fall 2023 to Present

Sexual wellbeing plays a crucial role in overall health, influencing physical, emotional, social, and even spiritual aspects of life. One key factor in sexual wellbeing is sexual mindfulness, or the ability to be aware and accepting of one's sexual thoughts, feelings, and sensations. While previous research has focused on sexual mindfulness in romantic relationships, little is known about how it applies to abstinent individuals. To address this gap, I developed a 16-item validated measure of sexual mindfulness specifically for abstinent individuals: the Sexual Mindfulness Measure for Abstinent Persons (SMM-AP). This tool adapts key elements from the Five Facets of Mindfulness …

Optimizing Nutrient Recycling To Achieve Zero–Discharge Management For Controlled Environment Agriculture, Noah James Langenfeld

All Graduate Theses and Dissertations, Fall 2023 to Present

Controlled environment agriculture (CEA) allows for human control of one or more environmental factors affecting crop production. Optimizing nutrient management in such systems allows for translation and predictions of sustainable management strategies in the field. These systems will be used to supply fresh food as public and private space agencies are planning to send humans to the Moon and Mars in the near future. Food resupply becomes increasingly difficult as the distance from Earth increases. Plants can be grown off-Earth as a food source, but their growth must be carefully managed to ensure long-term sustainability. I describe a model used …

Effects Of Plant Biostimulants On Onion Growth And Production Under Greenhouse And Field Conditions, Prakriti Nepal

All Graduate Theses and Dissertations, Fall 2023 to Present

The escalating impact of climate change on agricultural production underscores the need to investigate sustainable crop enhancement methods. This research explores the use of plant biostimulants to grow onion (Allium cepa L.) under varying environmental conditions. In the initial germination and greenhouse screening, seven biostimulants were tested on ‘Vaquero’ onion seeds: three bacterial products (Continuum, Spectrum DS, and Tribus Original), two mycorrhizal products (Mighty Mycorrhizae and Myco Apply), one seaweed extract product (Seaweed), and one product containing humic acid (Huma Pro 16). Mighty Mycorrhizae, Continuum, and Myco Apply supported faster germination, while seeds treated with Spectrum and Seaweed took …

Development Of Saddlepoint Methodologies For Sparse Sample Multiple Parameter Generalized Linear Models And Correlated Data Scenarios, Christopher Johnson

All Graduate Theses and Dissertations, Fall 2023 to Present

Parameter estimation using maximum likelihood techniques may be biased when sample sizes are small, event rates are low, or otherwise sparse counts exist in a parametric model. This in turn may lead researchers to draw invalid statistical conclusions when conventional methods are utilized. The saddlepoint approximation has potential to lessen the degree of bias in sparse data conditions through its use of moments beyond the mean and variance, which allows for more accurate approximations using a smaller number of observations. We propose two novel saddlepoint methods for use in practical analysis scenarios, as an alternative to maximum likelihood estimation. First, …

Forging Resilient Futures: The Role Of Community Organizations In Addressing Environmental Injustices Faced By Immigrants Along The Wasatch Front, Utah, Nowrin Fatema

All Graduate Theses and Dissertations, Fall 2023 to Present

Utah’s Wasatch Front is an urban area with a growing population that faces looming environmental challenges, such as the desiccation of the Great Salt Lake, worsening air quality, water scarcity, and the impacts of urban sprawl. If not prevented, the lake’s desiccation or other environmental challenges could result in dangerous air pollution, biodiversity loss, and disruptions to local economies. Immigrant populations may be uniquely vulnerable to these environmental changes because of economic, social, and political marginalization. For example, 50% of Salt Lake City’s foreign-born residents live on the City’s westside—the area on the frontline of the lake’s toxic dust. My …

Gone With The Flow: Flow Reduction Coincides With Reduced Metabolism And Standing Stock Of Benthic Algae And Macroinvertebrates In Desert Rivers, Chloe E. Lyles

All Graduate Theses and Dissertations, Fall 2023 to Present

River metabolism, the measure of energy flow in a river, is driven by hydrological and physicochemical regimes (e.g., temperature, turbidity, and nutrients). However, these regimes are increasingly altered by human water demand and climate change-driven drought. These stressors alter the magnitude, timing, and duration of critical spring-snowmelt floods with poorly understood consequences on ecosystem function, particularly in desert rivers. To investigate the linkages between flow reduction, river metabolism, and basal food resource productivity (i.e., algae and aquatic invertebrates), we measured metabolism and basal resource availability in seven desert tributaries with varying degrees of flow reduction during low-flow conditions in 2023 …

Irrigation Performance Connection To Water Quality In Big Creek, Sena Bildim

All Graduate Theses and Dissertations, Fall 2023 to Present

Due to new technologies and improved water management strategies, sprinkler irrigation systems are becoming more common in Utah and nearby areas. These systems are generally thought to be more efficient, but their effects on water quality are not well understood. This study focuses on the Big Creek watershed, which flows into Bear Lake—an area where water quality concerns are increasing.

The purpose of this research was to explore how different irrigation systems—sprinkler and surface—affect both water use and water quality. Field tests were conducted to measure how evenly water was applied and how efficient each system was. Water and soil …

Understanding The Impact Of Colloidal Calcium Phosphate On The Ph Variation In Cheddar Cheese During Early Stages Of Aging, Rachel Lindstrom

All Graduate Theses and Dissertations, Fall 2023 to Present

The Cheddar cheese industry has recently observed variation in the pH of their cheese during the early stage of storage. This variation may be due to the addition of the faster acid producing thermophilic starter culture Streptococcus thermophilus which was recently introduced into the Cheddar cheese making process. This starter culture may impact the calcium buffering properties of the cheese due to more retention of the insoluble calcium (INSOL Ca) within the cheese. To investigate this problem, we studied how insoluble calcium affects cheeses with pH ranging from 4.8 to 6.6 and found that INSOL Ca was positively correlated with …

High-Throughput Phenotyping Of Early Generation Small Grains Breeding Lines To Indirectly Select For Grain Yield, Dalton Jones

All Graduate Theses and Dissertations, Fall 2023 to Present

In small grains breeding programs, breeders aim to develop better varieties by selecting for important traits like grain yield. However, it takes many years before yield can be measured because several generations of selection are required to fix lines and increase sufficient seed for yield measurements. This process can be slow and expensive

High-throughput phenotyping (HTP) is a modern approach that can increase breeding efficiency by leveraging technology to quickly measure secondary traits which can be used to indirectly select for important traits in crop plants. For example, researchers can use cameras on unmanned aerial vehicles (UAVs, i.e., drones) to …

Caregiver Mand Training: Evaluating The Effects Of Using Bug-In-Ear Coaching Via Telehealth, Makenna P. Carnesecca

All Graduate Theses and Dissertations, Fall 2023 to Present

Applied Behavior Analysis has been seen to be an effective way to help teach skills to children with autism. Caregivers' involvement in teaching these skills is beneficial for their child's progress. Using Bug-in-Ear coaching, which provides in-the-moment instructions and feedback to caregivers via Bluetooth headphones, has been demonstrated to be a potential way to train caregivers to teach skills to their children. This current study aimed to evaluate if the use of Bug-in-Ear coaching via telehealth was an effective way to teach caregivers to train their children how to ask for wanted foods using picture cards. The results of this …

Analyzing Microalgae-Bacteria Population Changes In Response To Environmental Parameters For Improved Wastewater Treatment, Amanda M. Moravek

All Graduate Theses and Dissertations, Fall 2023 to Present

Microalgae are incredible organisms that have a variety of uses such as wastewater treatment, fertilizer, livestock feed, and bio-compound production. Microalgae require a light source and minimal nutrients space to proliferate, making them an environmentally friendly and sustainable option for such processes. The Sustainable Wastes-to-Bioproducts Engineering Center at Utah State University is developing and implementing a Rotating Algae Biofilm Reactor (RABR) to remove total nitrogen and phosphorous from the Central Valley Wastewater Reclamation Facility wastewater effluent. Harmful compounds such as nitrates and phosphates are metabolized by the microalgae and converted into useful bioproducts, resulting in a circular economy. These RABRs …

Influence Of Physical Properties Of Fat On Product Quality, Shelf-Life And Consumer Acceptance Of Chocolate-Coated Products, Audrey Lidgard

All Graduate Theses and Dissertations, Fall 2023 to Present

In chocolate-coated products, oil migration in fats can lead to chocolate softening, filling hardening, discoloration, and lower consumer acceptance. This study examined three different fats (soy- palm-, and palm-kernel (PK) based), crystallized under different conditions (cooling rate and use of high intensity ultrasound (HIU)) to examine how the crystallization conditions impact the physical properties of confectionery products. These conditions produced fats with high and low oil binding capacities (OBCs); the ability of crystal networks to entrap liquid oil. Model systems were created to examine measurable quality degradation and consumer acceptance of chocolates placed in contact with the fats; one with …

Water Use By Irrigated Turfgrass And Connections To Climate And Biophysical Processes, Karem Meza

All Graduate Theses and Dissertations, Fall 2023 to Present

Urbanization and limited water supply and storage result in imbalanced urban water budgets. Quantification of water use becomes important in urban landscapes because urban turfgrass requires a significant amount of water and competes with other urban requirements. Evapotranspiration (ET) plays a crucial role in determining irrigation needs. Credible measurements and spatial estimates of urban turfgrass ET are needed for urban water management. However, these have not been addressed in urban landscapes in arid and semiarid regions. Despite estimating spatial urban turfgrass ET, turfgrass quality linked to ET has not been widely evaluated. Due to different environmental conditions, the driving forces …

Attachment, Emotional Experiencing, And Physiological Response During Couple Interaction, Kyla Iverson

All Graduate Theses and Dissertations, Fall 2023 to Present

In this master’s thesis, I conducted a study using data from 63 hetereosexual couples from a previous research study done by Dr. Ryan Seedall. These couples participated in a micro-intervention where each partner discussed personal issues for three to four minutes while the other received guidance on supportive responses, promoting open communication. Using this data, I conducted a coding project studying the relationship between attachment styles and emotional experiencing, specifically how attachment styles intersect with emotional experiences, moment-to-moment feelings, and physiological arousal. This coding project involved utilizing the Emotional Experiencing Scale (EXP) by Klein and colleagues (1986) to observe couple …

Effects Of Light Intensity On Algae Biofilms In Rotating Algae Biofilm Reactors (Rabr), Joshua D. Wintch

All Graduate Theses and Dissertations, Fall 2023 to Present

There is a growing need for economically and ecologically friendly wastewater treatment processes. Utilizing natural algae biofilms to remediate excess nitrogen and phosphorus from municipal wastewater is a treatment technique of academic interest. Utilizing natural algae in rotating algae biofilm reactors (RABR) is a potential engineering application of algae biofilms for municipal wastewater anaerobic digestor effluent treatment. The ideal reactor operation would use sunlight as the light source for algae growth, however, there is little academic research on algae biofilm growth productivity across natural sunlight light intensity ranges. This research seeks to understand the relationship between rotating algae biofilm reactor …

Exploring The Utilization Of Benefits And Participation Experiences Among Immigrants And Refugees In Wic Program: A Mixed-Method Study, Melissa Murillo Timoschenco

All Graduate Theses and Dissertations, Fall 2023 to Present

Food insecurity is a critical issue globally and in the United States. The USDA’s Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) aims to address this by improving the nutrition of low-income pregnant women and children. However, immigrants and refugees, who are particularly vulnerable to food insecurity, often encounter barriers to accessing WIC benefits. This study aimed to: i) evaluate how immigrant and refugee families in Utah utilize WIC benefits, and ii) explore their experiences, challenges, and suggestions for improving the program. This mixed-method study combined surveys with 116 participants and in-depth interviews with 25 participants. Surveys were …

Potamogeton Crispus Invasion: Impacts On Native Aquatic Plants And Associated Faunal Habitat, Meghan-Grace Slocombe

All Graduate Theses and Dissertations, Fall 2023 to Present

Aquatic invasive plants are non-native plants that invade a water body and displace native aquatic plants. Invasion depletes the native plant community's ability to provide ecosystem services, including improved water quality, decreased problematic algae, and increased animal habitat. The loss of these ecosystem services reduces the value of fishing, boating, and swimming opportunities in aquatic ecosystems. The potential changes in plant communities and services are particularly important at sites targeted for restoration because project goals typically include increasing ecosystem services, including wildlife habitat. Curly-leaf pondweed (Potamogeton crispus L.) is a problematic invasive species in North America. To better manage …