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Fine Arts

Temporal Decay of Memory Discrimination: Investigating Mnemonic Similarity Task with Extended Delays

March 21, 2024 12:00 AM
Authors: Alexandra Osmond, Samantha Stabler, Sara Knowlton, Sam Chipman, Brock Kirwan. Mentors: Brock Kirwan. Insitution: Brigham Young University. Memory discrimination refers to the ability to distinguish between different memories or experiences based on their unique characteristics or details. The Mnemonic Similarity Task (MST) is a variant of a recognition memory task that assesses memory discrimination by asking participants to encode a series of objects in long-term memory and later discriminate between targets (repeated items), lures (similar but not exactly the same as previously seen items), and foils (novel items). The similarity of targets and lures is systematically varied resulting in five similarity levels (L1-L5). The goal of our research was to determine if individuals retain memory discrimination abilities after different periods of time exceeding 12 hours. Study recruitment was done on Brigham Young University campus for 18-25 year olds with no known neurological conditions (ADHD, major depression etc.). Thirty participants were tested in each group and they were asked to complete an immediate test. They were then asked to return to the lab for a second test after a 1-day, 3-day, or 1-week delay.Our results showed that the 1-week delay of the MST eradicated an individual's ability to discriminate between the lures of varying similarity. At a 1-day delay, individuals did lose some memory discrimination ability, but were still able to recognize the more distinct lures.

A look at Suicidality Among Various Demographics at Southern Utah University

March 21, 2024 12:00 AM
Authors: Maggie Smith, Bryan L Koenig. Mentors: Bryan L Koenig. Insitution: Southern Utah University. Nationwide, Utah ranks 14th for suicide rates (CDC, 2021). To help prevent suicide, understanding suicidal ideation differences among certain populations such as sexual, ethnic, and racial minorities is important. One study found that LGBTQ+ individuals are three times more likely than non-LGBTQ+ individuals to attempt suicide at some point in their lives (di Giacomo et al. 2018). Religious background has also been connected to suicidality. Sterling and colleagues (2002) discovered that active LDS males aged 15–34 years have a lower risk of suicide compared with both less active LDS members and non-LDS individuals. Whereas some studies have samples of diverse ages and locations, research on suicidality among college students specifically in Utah is lacking. The purpose of the present research is to assess how demographic variables such as religious identity, biological sex, sexual orientation, gender identity, and racial/ethnic identity are connected to suicidality at a regional university in the Southwestern United States, Southern Utah University. In this study, 1,397 SUU Students took at least one of two surveys that asked about mental health variables and demographics. Suicidal ideation was measured using the Suicidality Suicide Behaviors Questionnaire Revised (Osman et al., 2001). Results indicate that the more minoritized identities students had, the more likely they were to be suicidal. Other findings include that LGBTQ+ students were very likely to be suicidal, cisgender students were less likely to be suicidal, and female students were more likely than male students to be suicidal. Additionally, suicidality was lowest among LDS students and highest among non-religious participants.

The Impacts of Distress and Perceived Social Support on Heart Rate Variability

March 21, 2024 12:00 AM
Authors: Mikel Cressman, Jackie Richey, Dantzel Petersen Hancey, Bianka Geraldo, Kayden Barlow, Ainsley Lumsden, Olivia Hubble. Mentors: Patrick Steffen. Insitution: Brigham Young University. Heart rate variability or HRV is a measure of the amount of time between a person’s heartbeats and is related to their physiological response to stress. Social support is an important component of positive health outcomes and plays a part in mediating distress. More research is needed to better understand the connection between HRV, social support and distress. We hypothesize that those with low baseline HRV will have higher distress scores and lower social support than those with high baseline HRV. We also hypothesized that someone with high distress and high social support will have higher HRV than those with high distress and low social support. In this study, social support was measured using the Multidimensional Scale of Perceived Social Support (MSPSS), distress was measured using the Counseling Center Assessment of Psychological Symptoms (CCAPS), and baseline HRV was measured using a NEXUS biofeedback device using ECG leads on the collarbones and left rib. Our sample consisted of 236 college students (17-28 years old; 57.6% female; 85.9% white) drawn from an online recruiting software and student development classes. For the first hypothesis, we will use a MANOVA to compare both low and high HRV baseline with mean MSPSS and CCAPS scores. We will use an ANOVA to compare differences in HRV between those with high MSPSS and high CCAPS scores to those with low MSPSS and high CCAPS for the second hypothesis. We expect to find that those in the lower HRV group will have higher CCAPS scores and lower MSPSS scores when compared to the high HRV group. We also expect to find that participants in the high CCAPS and high MSPSS group will have a higher HRV when compared to the high CCAPS and low MSPSS group.

Contrasting Representations of the Berlin Wall in American and German Museums

March 21, 2024 12:00 AM
Authors: Breanne Herrmann. Mentors: Paul Stavast. Insitution: Brigham Young University. The construction and preservation of the Berlin Wall in 20th century Germany has perpetuated a social legacy perceived differently in various countries. Although the historical facts are unchangeable, their representation by institutions in each country varies and reveals their unique participation with the German Democratic Republic. This paper analyzes the portrayal of the Berlin Wall and surrounding GDR events in museums in both Berlin, Germany and American cities. Die Mauer, The Wall museum at Leipziger Platz in Berlin serves as a model of the German perspective. Its focus on the logistics of the Berlin Wall and the social impact in Germany and surrounding satellite countries is compared to the portrayal in American museums, which assume a more general approach of the Berlin Wall as a symbol of greater political struggles. This includes a consideration of locations of museums in America as well as information presented in the exhibits. Identifying differences between museums in these two countries provides insight into the experience of each during the GDR period and subsequent social perceptions of the Berlin Wall's history.

Counting Crowds: An Analysis of Population 'Top-Outs' in Counties Across the United States

March 21, 2024 12:00 AM
Authors: Maisie Baird, Hugh Kerry, Samuel Otterstrom. Mentors: Samuel Otterstrom. Insitution: Brigham Young University. Throughout the history of the United States, populations have experienced continual fluctuations across its diverse landscape. Although much research has focused on the growth and decline of cities and counties, many of these studies have focused on the positive population growth in larger cities and counties, insomuch that scholars and the public might have an incomplete or skewed view of the historical population geography of the country. However, this paper presents a broader perspective, including times of both population growth and decrease across regions and multiple decades and showing how these trends do not follow strictly positive trajectories nor exhibit isolated randomness. This paper will focus on specific examples of counties across the United States, highlighting why there were population ‘top-outs’ in these areas. For example, Sheridan County, Nebraska experienced a population boom at the onset of World War I, as it became the United States’ primary source of potash. However, at the end of World War I, potash could again be cheaply imported from Europe so, Sheridan County lost its booming industry, resulting in population decline. This research delves into the concept of population ‘topping out’ in counties, emphasizing a comprehensive understanding achieved through a holistic framework that accounts for geographic, regional, economic, and temporal aspects.

Influence of Childhood Levels of Self Control on Adolescent Sleep Outcomes

March 21, 2024 12:00 AM
Authors: Jacalyn Richey, Hayley Pierce. Mentors: Hayley Pierce. Insitution: Brigham Young University. Good sleep habits and effective self-control are important components of successful functioning. Unfortunately, chronic sleep loss is a common concern in adolescence as both their autonomy and demands on their time increase. This loss of sleep impacts neural and physical development and is connected with increased mental illness, delinquency, and academic difficulties. Self-control may aid in the prioritization of sleep by curbing impulsive desires and improving decision making around adhering to bedtimes. This study drew on data from the Future of Families and Childhood Wellbeing Study (FFCWS) measuring self-control at age 9 and sleep outcomes at age 15 (N = 3,444; 48.7% female; 49% Non-Hispanic Black). Multivariable analyses indicated that self-control showed statistically significant relationships with social jetlag, falling asleep, and having a regular bedtime after controlling for several relational and economic factors. Improving childhood self-control habits and skills through modeling and instruction may lead to increased positive sleep outcomes, which may increase healthy development in adolescence and beyond.

How Depression Affects “Feeling the Spirit” in College Age Latter-Day Saints

March 21, 2024 12:00 AM
Authors: Nadia Mando, Josh Shaeffer, Jared Nielsen. Mentors: Jared Nielsen. Insitution: Brigham Young University. Background: “Feeling the Spirit” is an important experience for many active Latter-Day Saints. Feeling the Spirit is often defined by the presence of positive, even if minor, feelings which are perceived to be interactions with deity. However, some Latter-Day Saints struggle to feel the Spirit which can be distressing to them. Recently, LDS leaders have focused on understanding how depressed individuals might experience “feeling the Spirit” differently.Objective: Our pilot study sought to understand the relationship between depression and the frequency and strength of spiritual experiences.Methods: We used the Depression Anxiety Stress Scale-21 (DASS21) to measure depression. We created two separate measures to inquire how frequently and strongly participants felt the Spirit in the last six months. We also created a task asking participants to read multiple scripture passages and report how strongly they felt the Spirit while reading each passage. Responses to each passage were averaged to create a state measure of feeling the Spirit. We hypothesized that higher scores of depression would predict lower scores on feeling the Spirit for all three measures.Results: We found that scores on depression (M=11.388, SD=7.844) significantly correlated to frequency (M=3.683, SD=0.760, r= -0.352, p<.001) and strength (M=4.004,SD=0.628, r=-0.453, p<.001) of the Spirit. However, depression scores were not significantly correlated with our state measure (M=2.384, SD=0.903, r=-0.192, p=0.078). In our regression models we found that depression is a significant predictor of both frequency (R2= 0.091, F(1,83)=8.347, p=.005, =-0.029, p=.005) and strength (R2=0.158, F(1,83)=15.523, p<.001, = -0.032) of feeling the Spirit but, not of feeling the Spirit during the scripture task (R2=0.003, F(1,83)=0.236, p=0.628, = -0.463).Conclusion: These findings suggest that depression may affect how LDS persons experience their relationship with God. Our findings take a step toward explaining why some individuals may experience difficulty in “feeling the Spirit”. Future studies are necessary to elucidate these preliminary findings.

Examining the Effects of Service on Male-Coded Committees on the Reelection of Female Legislators

March 21, 2024 12:00 AM
Authors: Annabelle Crawford. Mentors: Celeste Beesley. Insitution: Brigham Young University. Women who run for office do not fit societal leadership expectations, which hurts their chances of being elected (Bauer 2020; Eagly and Karau 2002). Women who serve in male-coded positions face backlash for confronting issues that are incongruent with stereotypically feminine attributes (Davidson-Schmich, Jalalzai, and Och 2023). I theorize that social role incongruence is exacerbated for women who serve on male-coded legislative committees. Therefore, I predict that women who serve on male-coded committees are reelected less frequently than women who do not serve on male-coded committees. However, I propose that women with leadership roles on male-coded committees are members of the political elite and therefore will be reelected at rates similar to other legislators. This research will employ a census of female legislators from both houses of the U.S. Congress who began their tenure between 1993 and 2022, using data compiled by the Congressional Research Service. Whether a committee is male-coded or female-coded (or gender-neutral) will be determined based on whether men or women dominate the industry associated with the committee. Social role incongruence will be measured by analyzing public perceptions of female legislators during the time they served on a male-coded committee. I will use regression analysis to determine the effect of serving on a male-coded committee on a woman’s gender role incongruence. I will then compare the proportion of reelection races won by women who served on a male-coded committee to the proportion of races won by women who served on a female-coded or gender-neutral committee using difference in proportions tests. I will also compare the electoral success of women who held leadership roles on male-coded committees to the electoral success of other legislators.

The Effects of Anterograde Amnesia on Mnemonic Discrimination: A Single-Subject Case Study

March 21, 2024 12:00 AM
Authors: Sara Knowlton, Sam Chipman, Samantha Stabler, Alex Osmond, Brock Kirwan. Mentors: Brock Kirwan. Insitution: Brigham Young University. The hippocampus is a brain structure involved in recognition memory and pattern separation, or the ability to disambiguate potentially interfering or overlapping memory representations. The Mnemonic Similarity Task (MST) has been used to assess memory specificity by asking participants to encode a series of objects and later perform a recognition memory test with repeated items (targets), similar but not exact repeats (lures), and novel items (foils). In a single-subject case study, we utilized the MST in evaluating recognition memory over various delays of a subject with anterograde amnesia. Subject MC is a healthy young adult female who underwent a unilateral amygdalohippocampectomy as a treatment for epilepsy. This procedure included the complete removal of her hippocampus in the right hemisphere, which we verified with magnetic resonance imaging. In addition to the MST, we compiled a battery of neuropsychological tests, including the Wide Range Assessment of Memory and Learning (WRAML-3), the Delis-Kaplan Executive Functioning System, and the Wechsler Abbreviated Scale of Intelligence (WASI-II) to more holistically assess MC’s memory deficits. Preliminary analyses showed significantly lower lure discrimination when compared with control subjects, indicating deficits in pattern separation. Further analysis of MC’s MST results are being conducted to evaluate her broader ability for recognition memory.

Participation of Spanish-English Bilingualism in the US Political System: How Does Spanish Affect Voter Perception?

March 21, 2024 12:00 AM
Authors: Alexa Smith. Mentors: Iliana Portaro. Insitution: Southern Utah University. Every day, more and more political ads are popping up in Spanglish or even full-out Spanish on screens across the United States. Whether or not these ads are effective is another story. The research conducted here was based on the hypothesis that in America, after its most recent, tumultuous presidential election cycle, given also that Spanish speakers are on the rise, a candidate’s bilingualism could mean the difference between winning a seat or walking home empty-handed. According to an anonymous online research survey conducted in Salem of Marion County, Oregon, this is only the case when a constituent places importance on a candidate’s language ability. Otherwise, the majority of respondents remained largely indifferent. Additionally, this study determines that more can be done to encourage Latinx individuals to participate in the political system, and it all starts with community outreach. The results of this survey are based on a small, mostly Caucasian sample size, but there is still much to be examined.

Do images of gender conformity affect individual comfort and conformity with gender expression

March 21, 2024 12:00 AM
Authors: Alexis Downey, Kylee Navin, Brice Page, Alyssa Franklin, Hannah Cluff, Julie Johnson Pynn. Mentors: Julie Johnson Pynn. Insitution: Southern Utah University. “Gender expression refers to the way a person expresses their gender identity through appearance, behavior, and interests” (Helgenson, 2020). Previous research has shown that clothing has been used as a form of self-expression and that this expression of self-perception is more important for cisgender women (Strubel and Goswami, 2022). Additionally, previous research has found that conservative beliefs predict generalized prejudice toward gender-nonconforming individuals (Prusaczyk and Hodson, 2020). Felt pressure from peers and the self has been found to relate with greater gender typicality (Jackson et al. 2021), which leads us to believe that images of others may influence comfort and conformity with one’s own gender expression. The purpose of our study is to better understand the effects of appearance and political affiliation on comfort and conformity with gender expression. Participants were exposed to one of two visual manipulations: images of gender-conforming individuals, and images of gender-nonconforming individuals. Participants were asked to complete the Comfort and Conformity with Gender Expression Survey before and after being exposed to the images. We predicted that viewing images of gender non-conforming individuals would decrease participants' comfort and conformity with their gender expression, while viewing images of gender-conforming individuals would increase participants' comfort and conformity with their gender expression. Results will be forthcoming. Gender identity and expression are evolving rapidly, and it is important to examine masculinity and femininity in relation to gender non-conforming individuals rather than just gender-conforming individuals.

Sodium Reduction Policy Response

March 21, 2024 12:00 AM
Authors: Jacob Hutchings, Harrison Li. Mentors: Joe Price. Insitution: Brigham Young University. We examine the effectiveness of federal school nutrition policies and regulations; specifically, the recent transitional targets for sodium reduction announced in 2021. We performed web-scraping to gather over 5 million observations representing every U.S. state and over 2000 school districts and then constructed a weekly average of sodium served in school lunches by district. Using this data, we apply OLS regression with district fixed effects and find that the policy caused a significant, one-time reduction in weekly average sodium of approximately 220 mg. We further explore this result by looking at heterogeneous responses to the policy by political partisanship. We find that there is a significant, partisan response to the transitional targets. Lastly, we consider an adverse effect of sodium reduction by looking at potential sodium substitutes in school lunches. Contrary to expectations, our data shows a statistically significant correlation between decreased sodium levels and decreased sugar levels. To conclude, sodium reduction policies reduce sodium and other harmful nutrients but may be less effective across party lines.

Frim Patron To Partner: Accomplishments of Museum-Armature Archaeology Relationships

March 21, 2024 12:00 AM
Authors: James Hall. Mentors: Paul Stavast. Insitution: Brigham Young University. As of November 2023 the Utah Statewide Archaeological Society's social media pages have close to 4 thousand followers, which shows that interest in Archaeology. From 1955 to around the mid-90s USAS members contributed greatly to the archaeological research and the protection of archaeological sites and the materials created by those people that had called what is now Utah home. Through the partnership of Universities and Museums they had great success and this poster aims to highlight some of those successes and push for Museums to continue facilitating these opportunities.

Experience impact and the influence of novelty, social connection, and positive emotions on tourist experiences

March 21, 2024 12:00 AM
Authors: Braden Bringhurst, Michael Ray, Megan Barbier, Ellie Smith. Mentors: Peter Ward. Insitution: Brigham Young University. In travel, the interplay of social connection and novelty profoundly shapes the impact of peoples' experiences. This study examines novelty, positive emotions, social connection, and the impact of the experience on participants through the lens of the Self-Expansion Theory. Novelty is defined as the process of experiencing or encountering something different to the objects regularly encountered in everyday life. Social connection is defined as the affective and cognitive perception of interrelatedness within social groups, encompassing emotional responses like feeling understood and valued. Positive emotion is defined as pleasant multicomponent response tendencies, including joy, interest, contentment, pride, and love. Experience impact is defined using the experience typology. This typology starts with prosaic experiences or ordinary parts of life. The next progression is memorable experiences which introduce felt emotions into the experience. The next stage is meaningful which introduces discovery as well as emotions into the experience. The final stage is transformational which introduces a desire, or actual personal change happening to the experiencer as well as emotions and discovery. To measure the various stages of the experience typology framework, we use the Experience Impact Scale to identify the personal impact of a tourist experience. These various constructs are explored through the perspective of the Self-Expansion Theory which states that people seek to expand their potential efficacy, perspectives, and sense of self through the development of relationships. This study utilizes this theory by looking into novelty’s effect on the impact of an experience through the lens of Self-Expansion Theory with respect to social connection and positive emotions as mediating factors. The data were analyzed using structural equation modeling in AMOS v 28. Models were gradually expanded on, starting with the initial relationship between subjective novelty and experience impact. Later, a mediating model was considered that incorporated subjective connection and positive emotions as mediating effects on experience impact. The model examining the relationship between subjective novelty and experience impact as mediated by subjective connection and positive emotions had an acceptable model fit. The significant factors that contributed to the model were subjective novelty which had a standardized regression weight of .264, subjective connection which had a standardized regression weight of .222, and positive emotions which had a standardized regression weight of .256. The model explained 16% of the variance within experience impact. This study demonstrates that novelty influences social connection which influences positive emotion which positively impacts the tourist experience. People designing experiences should create a novel experience for the experiencer that evokes positive emotions and facilitates social connection. Future research could explore the relationship between the novelty of location and activities associated with tourist participation and the impact on the experience.

Measuring shear wave speed in tendons using low-cost accelerometers on a flexible PCB with an Arduino microcontroller

March 21, 2024 12:00 AM
Authors: Eli F Smith, Christopher Dillon, Matthew S Allen. Mentors: Matt Allen. Insitution: Brigham Young University. Background: Shear wave tensiometry offers a method to measure in vivo tendon tension, crucial for inferring applied loads on tendons. However, existing equipment for this purpose is costly and lacks mobility, limiting the ability to study a larger cohort of subjects engaged in various physical activities. Goal: This research aimed to assess the viability of utilizing low-cost digital accelerometers in conjunction with an Arduino-based microcontroller for shear wave tensiometry. Approach: This work employs surface-mounted accelerometers on a custom flexible printed circuit board (PCB), so that even spacing can be maintained between the accelerometers without interfering in data collection. To test the system and verify its ability to acquire measurements at a high enough rate, the PCB was connected to a shaker driven with a known sinusoidal signal. The flexible PCB was held in place on the Achilles tendon using athletic tape with a tapper placed on the tendon to send a shear wave through the tendon. Results: The results obtained to date compare the accuracy of the proposes system relative to the current system, which uses instrument grade accelerometers. Results obtained to date on the tendon reveal the degree to which the PCB interferes with the measurements, and suggest possible modifications to improve future designs. Conclusion: To attain valid shear wave tensiometry data, further iterations of the flexible PCB design are needed. Moreover, employing more powerful microcontrollers capable of accommodating the requisite sample rates is necessary for an improved system.

Victor LaValle’s Destroyer: Comic as a New Medium for Black Narratives

March 21, 2024 12:00 AM
Authors: Shauri Thacker. Mentors: Nicole Dib. Insitution: Southern Utah University. The representation of Black narratives within the medium of comics and graphic novels has been and continues to be sparse compared to the focus on white characters and stories. In recent years, however, a new paradigm of Black representation has been appearing in comics and comics studies. Emerging from Black Lives Matter movement discourse about police brutality and taking a new angle on the “organic black protest tradition” is Victor LaValle and Dietrich Smith’s 2017 graphic novel Destroyer. Their visual narrative follows the last descendant of Frankenstein—Dr. Josephine Baker—and her endeavors for justice after the murder of her son Akai as her plotline weaves with the original Frankenstein creature’s quest to subdue humanity (Rickford, 35). In this paper, I will perform a close reading of this work using the theoretical lens of critical race theory and its intersection with feminist theory. My reading will prove that LaValle and Smith’s comic—though it does not have the intent of treating Black women as a “unitary and monolithic entity”—increases a reader’s focus on mother and doctor Josephine Baker in order to portray her rage and grief over Akai’s death at the hands of a police offer (Nash, 8). This analysis of Dr. Baker’s character, combined with LaValle’s usage of allusions and intertextuality, subverts the stereotypically white comic narrative by portraying the lived reality and precarity of many Black individuals within the United States. Through this reading, I will demonstrate that the medium of comics allows for a multifaceted depiction of Black narratives and a new form of literary activism.

Theology and Prosperity of Women Within the Latter-Day Saint Church: Exploring Utah’s Religiosity Effects On Feminism

March 21, 2024 12:00 AM
Authors: Alexis West Salinas. Mentors: Johnathan Chidester. Insitution: Southern Utah University. There is a growing need to further understand the psychological and physical effects of religiosity among female-identifying members within the LDS church. According to recent studies, as of June 2023, Utah has a Mormon population of 68.55%. Within these statistics, about a fifth of LDS members reported that they have or are currently taking medication for depression. The article also states that 27% of LDS women have depression compared to the 14.5% of LDS men. The church has an infamous reputation with the demonization of mental illness, especially with women. Given the history of society’s treatment of women, women are at an increased risk of suffering within the LDS church. It is important to have the best interests of LDS women in discussing the effects religiosity has on female members within Utah. This paper will analyze the well-being among women of the LDS church as well as assess the specific effects religiosity within Utah may produce surrounding the topics of purity culture, societal expectations, job opportunities, and relationships. This paper will also touch on topics relating to Utah education, LGBTQ+ women within the church, as well as compare and contrast gender roles and sociology. Composing a formulated understanding of these relationships paves the pathway forward in implementing accommodating tools for women within the LDS church in mental health and spirituality.

Reducing the Cytotoxicity of Polyethylene Glycol Diacrylate Microfludic Devices Using an Isopropyl Alcohol Washing Method

March 21, 2024 12:00 AM
Authors: Parker Johns, Chandler Warr, Gregory P Nordin, William G Pitt. Mentors: William G Pitt. Insitution: Brigham Young University. Polyethylene glycol diacrylate (PEGDA) microfluidic devices have gained prominence in various biomedical and analytical applications due to their exceptional material properties and compatibility with cell culture systems. However, the presence of residual uncrosslinked PEGDA monomers and photoinitiators within these devices can lead to cytotoxicity concerns, potentially compromising cell viability and experimental results. In this study, we present an innovative approach to reduce cytotoxicity associated with PEGDA microfluidic devices by implementing an isopropanol (IPA) washing method.Our investigation involves thoroughly characterizing the cytotoxicity of untreated PEGDA microfluidic devices and comparing it with devices subjected to the IPA washing procedure. We systematically assess cytotoxicity using cell viability assays and cell proliferation studies to quantify the impact of residual cytotoxic compounds on cells cultured within the microfluidic channels. Our results demonstrate that IPA washing significantly reduces the cytotoxic effects of PEGDA microfluidic devices, leading to improved cell viability and overall biocompatibility.Furthermore, we elucidate the mechanisms behind the reduction in cytotoxicity, shedding light on the role of IPA in effectively removing unreacted PEGDA and photoinitiators. This study provides valuable insights into the optimization of PEGDA microfluidic device fabrication processes, enhancing their biocompatibility and usability for various biological and biomedical applications.In summary, our research highlights the importance of addressing cytotoxicity concerns associated with PEGDA microfluidic devices and offers a practical solution through the implementation of an IPA washing method, ultimately expanding the potential of these devices in diverse scientific and clinical applications.

Utah Valley Flora Asteraceae Treatment

March 21, 2024 12:00 AM
Authors: Annika Wood. Mentors: Michael Rotter. Insitution: Utah Valley University. The Asteraceae is the most common plant family in Utah County, Utah. With over 79 genera and 238 species, it is also the most diverse family. Due to this substantial size and diversity, the genera of the Asteraceae have traditionally been placed into tribes. This confusing taxonomic situation has made the Asteraceae a noticeable but difficult group to identify. In particular the beginning botany students and non-technically trained citizens often can recognize the Asteraceae but have trouble distinguishing the many species. To help with this issue, we are creating a guide to the tribes and genera of the Asteraceae of Utah County. This key will provide a general view of which genera are connected and which are not. Knowing these patterns and differences could prove to be useful information for those who wish to know more about the fantastic plants that grow within Utah County. The course of action for creating these keys include research of the specimens in Utah Valley University's herbarium as well as other online herbariums. For the tribes we are specifically researching the distinct taxonomic classifications for each tribe individually as well as what connects them together. When those connections and distinctions are laid out in an understandable key, we will further create keys for each genera in the tribes. The end result we hope will be a useful and informative tool for identifying plants in the Asteraceae family.

Impact of the Removal of CD6 on T Cell Metabolism

March 21, 2024 12:00 AM
Authors: Alexa Bailey, Sophie Daines, Joshua Bennett, Carlos Moreno, Scott Weber. Mentors: Scott Weber. Insitution: Brigham Young University. As the understanding of cancer pathophysiology continues to increase, there is an increased focus on the role of T cells in targeting cancerous cells and tumor sites. Recently, it was demonstrated that CD5, a transmembrane glycoprotein found on T cells, plays a key role in negatively regulating T cell activity. CD5 also significantly impacts T cell metabolic profiles by increasing oxygen consumption rates (OCR) and extracellular acidification rates (ECAR). We are now investigating the role of CD6, a related membrane protein found on T cells, and its effect on regulating T cell proliferation and metabolism by measuring the proliferation rates and metabolic profile of T cells from a CD5/CD6 double knockout murine model. Because tumor microenvironments are vitally important in determining the immune system’s response to cancer, differences in metabolism may yield new insights for developing immunotherapy techniques.

Atmospheric Modeling of Brown Dwarfs With PICASO, SONORA, and JWST​

March 21, 2024 12:00 AM
Authors: Brayden Roberts, Joshua Lothringer, Denise Stephens. Mentors: Joshua Lothringer. Insitution: Utah Valley University. We present theoretical model fits to the spectra of two complex cloudy L-type brown dwarfs, VHS 1256b (L8) and J0624 (L5). Using the James Webb Space Telescope’s (JWST) Near Infrared Spectrograph (NIRSpec) and Mid-Infrared Instrument (MIRI), we get the complete spectra from 0.6-28 microns. We first fit the data using two forward model grids from the Sonora group to estimate the temperature and cloud properties of our object. Then, we apply a modified retrieval fitting code called PICASO, to make more complex fits to our observations. We conclude that forward models struggle to accurately fit our objects, while PICASO’s complex modeling can help us better understand what physics and chemistry could be lacking from our forward models.

Identification of an aphid-transmitted DNA virus in Brassica oleracea in Utah

March 21, 2024 12:00 AM
Authors: Travis Christensen, Geoff Zahn, Alma Laney. Mentors: Alma Laney. Insitution: Utah Valley University. In July 2022, green cabbage plants (Brassica oleracea) were observed with severe viral symptoms in a local community garden in Utah County. These plants were observed to be covered with cabbage aphids (Brevicoryne brassicae). Symptoms observed on the cabbage plants included yellowing, necrotic lesions, and brittle necrosis of the leaves. These symptoms have been found to be transmissible by the cabbage aphid to broccoli, cabbage, and kale, although symptoms are delayed in kale. Work is being done to find other transmissible plants within the brassica family. Sequencing of RNA yielded no results, however, amplification of viral DNA via rolling circle amplification (RCA) has yielded positive results. A sample obtained through maintenance of the virus and cabbage aphid is currently being subjected to RNAseq using the NovaSeq Illumina platform. Through several virological methods we are able to conclude the presence of a putative geminivirus transmissible through cabbage aphid in our affected plants. To our knowledge, this is the first report of an aphid-transmissible DNA virus of brassicas in Utah. Further work is being done to further identify, classify, and build the genome of this specific virus using Illumina sequencing.

Novel compounds produced by endophytes extracted from Cercocarpus ledifolius

March 21, 2024 12:00 AM
Authors: Ezra Wylie, Merrill Halling. Mentors: Merrill Halling. Insitution: Utah Valley University. Various parts of Cercocarpus ledifolius, or curled leaf mountain mahogany, was used for medicinal purposes by Native Americans for a wide variety of uses including tuberculosis, syphilitic sores, and venereal diseases. Symbiotic microorganisms, called endophytes, often produce these compounds for defense of the tree. Novel compounds have been found in plants which have demonstrated antibiotic, antifungal, or other biological activities. Endophytes were grown from various parts of the tree, including roots, stems, branches, and leaves. The bioactive compounds were isolated and identified using chromatographic and spectroscopic methods.

How substrate type influences the germination of Ocimum basilicum

March 21, 2024 12:00 AM
Authors: Emily Cherrington, Sam S Ingram, Chloe E Loveland, Ryanne Welch. Mentors: Olga Kopp. Insitution: Utah Valley University. Ocimum basilicum, commonly known as Genovese basil, is a frequently grown herb in the Lamiaceae family. It is used in food cuisines around the globe and is easily grown as a fresh-market herb for restaurants, farmer’s markets, and grocery stores. Basil has many antioxidants and anti-bacterial properties, but it is most commonly used as a culinary ingredient to add flavor to various dishes. Basil is very sensitive to cold, requiring well-draining soil with temperatures of 18°C to 27°C for germination. Consistent soil moisture is also necessary for optimum growth, and it prefers to stay moist to keep from drying out. In the face of global climate change, it becomes imperative to determine the adaptability of crucial agricultural crops -like basil- to varying nutrient levels in different substrate types across diverse environmental conditions. A plant's capacity to thrive in distinct substrates is intrinsically linked to the unique requirements of its seeds. The choice of substrate serves as the foundational element for cultivating healthy plants. This study centers on examining three pivotal aspects related to substrates: moisture retention, nutrient accessibility, and fungal growth. This led us to question whether the germination success of Ocimum basilicum differs depending on the substrate type. To test this question, we will plant Genovese basil seeds in four distinct substrate types: standard germination mix, 80/20 peat-perlite blend, compost-enriched soil, and an agar medium. Following their placement in the respective substrates, all seeds will be grown in a controlled growth chamber, subject to identical lighting conditions and a consistent temperature of 22°C to ensure uniformity across all treatments. At intervals of 1-2 days, diligent observations will be made to detect signs of germination. Once germination becomes apparent, we will meticulously document the results. Subsequently, this collected data will undergo analysis using the R Language. We anticipate that substrates rich in nutrients (specifically agar and standard germination mix) will exhibit heightened germination success. Investigating how substrate type affects the germination success of Genovese basil offers valuable insights with broad applications in horticulture and agriculture. It can enhance agricultural practices by pinpointing optimal soil choices for specific crops, increasing substrate efficiency to minimize resource wastage, and promoting sustainable and economical cultivation methods. Furthermore, this research contributes to a deeper comprehension of the environmental ramifications of crops and the diversity of crops in both controlled laboratory settings and natural environments.

Remote sensing mineral identification: an intercomparison of Hyperspectral and multispectral imagery using open-source applications in the Marysvale Volcanic Field.

March 21, 2024 12:00 AM
Authors: Noah Christensen, Matt Olson. Mentors: Matt Olson. Insitution: Utah Valley University. Geologic maps serve as a valuable tool with diverse applications, one of which is resource exploration. Understanding available resources in America is beneficial for enhancing energy security, environmental sustainability, and economic growth. As political discourse rises, it is crucial to address national security concerns and head towards short- and long-term goals of energy independence. Traditional geologic mapping is characterized by time-intensive and high-cost fieldwork, but through multispectral and hyperspectral remotely sensed imagery it is possible to instantly map extensive areas using unique absorption patterns of minerals in the reflected spectral signature of the electromagnetic spectrum. This study explores an intercomparison of mineral mapping using Hyperion (EO-1), ASTER, and AVIRIS imagery in the Marysvale Volcanic Field, Utah. The satellites and high-altitude aircraft were chosen due to their varying number of spectral channels, spectral ranges, and spatial resolutions, allowing for a cross-analysis of their strengths, weaknesses, and overall capabilities. While previous studies have utilized AVIRIS and ASTER imagery within the Marysvale Volcanic Field, no prior research has explored a comparison of mineralogical maps using these sensors at a specific location. All analysis will be conducted through open-source applications to promote accessibility in future research and reproducibility of image generation through the sharing of R code. This research will enhance our comprehension of the necessary spectral and spatial resolutions for generating accurate mineral identification. Published geologic maps and in-situ field samples were used to validate the generated maps. We expect to find one of two outcomes: a strong contrast in classified mineralogy depending on the image source used, pointing towards a need for higher spatial and spectral resolutions to achieve accurate mapping, or minimal variation in classification, indicative of an unnecessary number of spectral bands. Developing accurate and accessible mineral mapping tools may be the next step in strengthening our knowledge of resource availability, without the need for rigorous traditional mapping methods.

Spatial Dynamics of Foliar Fungal Community Structure in the Pando Aspen Clone

March 21, 2024 12:00 AM
Authors: Austen Miller, Josh Leon, Geoffrey Zahn. Mentors: Geoffrey Zahn. Insitution: Utah Valley University. The Pando aspen grove in Central Utah is a remarkable organism comprising a clonal colony of Quaking Aspen (Populus tremuloides) in Fishlake National Forest. While Pando has garnered plenty of attention, the role of the fungal microbiome within this clonal system remains relatively uncharted. This research project delves into the endophytic and epiphytic fungal communities inhabiting the leaves of this giant single organism. The clonal nature of Pando means that plant genotype is consistent across a broad area, allowing us to test hypotheses about how plant-associated fungi disperse and associate with their hosts. In particular, we are testing whether proximity to a forest edge affects foliar fungal community structure. This research will enhance our understanding of how forest patch size and location contribute to plant-fungus community formation. These findings may also have implications with the potential to affect the health and resilience of this aspen clonal colony, which could in turn inform conservation strategies and forest management in the face of environmental challenges and the shifting ranges of aspens and fungal symbionts.

When does a granite become granitic? A record of major and accessory mineral re-equilibration from super- to sub-solidus within the Half Dome Granodiorite, Sierra Nevada, CA.

March 21, 2024 12:00 AM
Authors: Emmaline M Saunders, Michael A Stearns, Ami Ward. Mentors: Michael Stearns. Insitution: Utah Valley University. The Tuolumne Intrusive Suite (TIS), Sierra Nevada, California, accumulated magmatic rock from 95 to 85 Ma. Ar-Ar biotite dates require that temperatures within the TIS remained above ~300°C until ~79 million years ago. The protracted thermal history resulted in five texturally and chemically distinct units that young towards the center and was recorded by chemical and isotopic re-equilibration of the minerals. Challener and Glazner (2017) demonstrated that amphibole phenocrysts from the Half Dome Granodiorite (Khd) experienced greenschist-facies metamorphism. Amphibole phenocrysts host abundant inclusions of biotite, chlorite, feldspar, titanite, epidote, and apatite, which are interpreted to have crystallized via breakdown of magnesiohornblende. Additionally, Al zoning suggests fracturing and subsequent healing of the amphibole crystals occurred at near- or subsolidus temperatures. New EPMA and LASS-ICP-MS analyses of texturally related amphibole, titanite, feldspar, and biotite from the equigranular Khd place limits on the timing of amphibole breakdown and contextualize the low-temperature re-equilibration of many of the major minerals in the rock. Most of the amphiboles analyzed contain 0.5–6 wt. % Al2O3 corresponding to actinolite compositions, while feldspar pairs record ~475 ºC apparent temperatures. Titanite grains (re)crystallized between 91–80 Ma and contain 25–825 ppm Zr, which correspond to apparent temperatures between 550–710 ºC (150 ± 50 MPa, aTiO2 = 0.5 ± 0.1). The distribution of Zr in titanites is bimodal with the majority having <200 ppm Zr. Titanites younger than 87 Ma have decreasing Zr content and titanites included within actinolite amphibole contain the lowest Zr content (25–50 ppm) and youngest dates (85–80 Ma). Melt-present crystallization of titanite began at ~91–90 Ma, followed by both near and subsolidus (re)crystallization from ~88–86, concluding with titanite growth via hornblende breakdown from 82–80 Ma. These data taken together with previous investigations provide a continuous record of the rock’s chemical evolution driven by incremental emplacement and subsequent episodic autometamorphism of the equigranular Khd, and critically, any inferences regarding magmatic processes in the TIS must first account for the metamorphic re-equilibration of the rock.

Host range testing and pathogenicity confirmation of potentially new blueberry fungus

March 21, 2024 12:00 AM
Authors: Kayla Knaperek, Megan Frisby, Geoffery Zahn, Alma Laney. Mentors: Alma Laney. Insitution: Utah Valley University. In February 2021, mycelial growth was found on blueberries, leading to the obtention of a fungal isolate using potato dextrose agar (PDA) after surface sterilization of the blueberries. The rapid growth of white mycelium and sclerotia was observed on the medium. Inoculation of basil plants with spores from surface-sterilized sclerotia in potato-dextrose broth resulted in necrosis and spreading in terminal buds, ultimately leading to plant death. Further isolation of the identical fungus from the diseased basil tissue confirmed its pathogenicity. Analysis of the isolate's ITS region sequencing revealed a 90% nucleotide identity to the closest relative, Botrytis cinerea. A project was initiated to further characterize the fungus, pathogenicity, life cycle, and morphological traits. The growth and development of the fungus were observed on V8, cornmeal, blueberry, and potato dextrose agars to characterize its nutritional requirements and growth patterns. Host range testing involved the systematic inoculation of various plant species (which were used as growth media), followed by careful symptom monitoring and photographed documentation. Additionally, Koch’s Postulates will be conducted to establish the causal relationship between fungal infection and the observed disease symptoms in the host plants. Seven days after inoculation, necrosis, wilting, and leaf discoloration were observed on select leaves of Lavender var. Oregano, suggesting possible infection by the blueberry fungus. Considering potential host plant immaturity during the initial inoculation, a re-inoculation is planned to ensure successful infection and to obtain conclusive results. Further investigation is warranted to confirm the pathogenic impact of the fungus on host plants.

Impacts of an Intercultural Teaching Experience in the Navajo Nation on Preservice Teachers

March 21, 2024 12:00 AM
Authors: Arahi Perdomo, Brooklyn Moore, Erin Kerr, Hula Santiago, Kylie Kay, Sarahi Joyner. Mentors: Krista Ruggles. Insitution: Utah Valley University. This research initiative centers on the experiences and learning outcomes of preservice teachers (PSTs) from Utah Valley University who volunteer to teach in the San Juan School District (SJSD) and the Navajo Nation. Our primary aim is to understand how this cross-cultural teaching experience shapes their future teaching practices, perspectives on diversity, and inclusion in education.Preservice teachers play a critical role in the future of education This study examines how their participation in a unique cultural context can enhance their preparedness as educators. By engaging in volunteer teaching assignments within the Navajo Nation, these students gain exposure to diverse cultural backgrounds; fostering cultural awareness and sensitivity.We seek to show the transformative impact of this experience on their personal and professional growth. Through interviews and observations, we will explore the challenges and opportunities faced by preservice teachers and how this experience influences their teaching philosophies and aspirations.Our ultimate goal is to determine how such immersive experiences can contribute to the development of culturally responsive pedagogy. We believe that these preservice teachers, with their enriched perspectives, can become advocates for diversity and inclusion not only within their classrooms but also within the broader educational landscape and society.This research holds the potential to inform teacher education programs and policy discussions regarding the value of cross-cultural experiences in teacher preparation. By shedding light on the impact of volunteer teaching in the Navajo Nation, we hope to contribute to the ongoing dialogue on fostering more inclusive and culturally aware educators, ultimately benefiting students and society as a whole.

Comparative Analysis of Native and Non-Native Rose Prickle Microbiomes and Associated Microbes

March 21, 2024 12:00 AM
Authors: Riley B. Jackson, Iris Cepeda. Mentors: Michael C Rotter, Kiara Whitley. Insitution: Utah Valley University. Roses (Rosa spp.) are beloved ornamental plants known for their flowers and for their formidable prickles, often referred to as thorns. These prickles are an important part of herbivore resistance in these plants. These mechanical defense structures can vary in shape and abundance and are found along the length of the stems and even the underside of leaves. Although the mere presence of these prickles can cause damage to potential herbivores they also may act as vectors for infectious microbes. Previous studies have shown that other piercing physical defense structures can harbor infectious bacteria, sometimes resulting in conditions such as gangrene, anthrax poisoning, or septic arthritis. This raises the question about their potential implications for human safety particularly when these plants grow in areas of high human use. While roses have similar sharp structures, it is currently unknown if they harbor any pathogenic or defensive bacteria. Our study explores and whether local roses (both native and non-native) have similar or distinct microbiomes and if they possess pathogenic microbes. Understanding these differences would enable us to shed light on ecological relationships between microbes and native versus non-native plants and health risks associated with rose prickle injuries.

Do the differences in size between heteromorphic sex chromosomes influence organism longevity?

March 21, 2024 12:00 AM
Authors: Olivia Frary, Carl Hjelmen. Mentors: Carl Hjelmen. Insitution: Utah Valley University. Previous work has shown that there are significant differences in lifespan between sexes of the same species. Whether it is an XY or ZW system, the heterogametic sex dies earlier. There are thought to be many factors that contribute to the difference in lifespan between the sexes. This research aims to investigate this relationship further by digging deeper into the degree of differences between the heteromorphic sex chromosomes. We want to determine whether the degree of differentiation correlates with the lifespan differences in species. The comparison of total genome size between the sexes of multiple species are used to find the difference in the size of their sex chromosomes, which is then compared to longevity data on the species to determine a relationship. This genome size data comes from publicly available databases and literature. These comparisons are made using comparative phylogenetic methods in order to account for evolutionary relatedness utilizing a newly constructed phylogenetic tree. All analyses are completed in R and include PGLS (Phylogenetic Generalized Least Squares) and measures of phylogenetic signal (Pagel’s lambda, Blomberg’s K). We will discuss the results of the comparative phylogenetic analyses and any patterns seen regarding longevity.

Towards the Development of at-home cell-free diagnostics to personalize treatment and improve the survival rates of Acute Lymphoblastic Leukemia

March 21, 2024 12:00 AM
Authors: Garrett Johnson, Tyler Free, Brad Bundy. Mentors: Brad Bundy. Insitution: Brigham Young University. Acute Lymphoblastic Leukemia is the most common form of childhood cancer. Asparaginase treatment has greatly improved survival rates to 80%. Survival rates increase by an additional 10% when diagnostic treatment monitoring is used to guide treatment administration. Cell-free protein synthesis is a technology capable of detecting Asparaginase in human serum. However, RNases from human samples destroy CFPS activity. RNase inhibitor can be produced at a low cost by the CFPS system to rescue in-vitro protein synthesis activity to enable biosensing. This work reports our work toward developing an at home Asparaginase diagnostic that would enable personalized dosing of Asparaginase and further improve survival rates of Acute Lymphoblastic Leukemia.

Leveraging Machine Learning in Face Mask Formulation

March 21, 2024 12:00 AM
Authors: Alexander Goslin, Hazel Ticas, Morgan Covarrubias. Mentors: Daniel Scott. Insitution: Utah Valley University. In the evolving realm of personal care product development, striking a balance between ingredient choice, manufacturing intricacies, and consumer demands is pivotal. As the industry grapples with escalating costs and the clamor for novelty, there's an imperative to find methods that refine the development pathway, keeping both product quality and cost-effectiveness in check. Machine Learning (ML) emerges as a promising contender, proposing a data-centric route to formulation - from discerning patterns to forecasting efficacies, and even creating formulas themselves. This study delves into the intricacies of leveraging ML for personal care formulations, specifically emphasizing its role in substituting ingredients to either amplify a product's qualitative facet or reduce production costs. Despite the allure of ML, its integration into personal care isn't without challenges, given the industry's unique regulatory, consumer-centric, and trend-driven landscape. Through rigorous testing, evidence-based enhancements, and in-depth analysis, we aim to shed light on ML's functional dynamics in cosmetic formulations, underscoring both its potential dividends in cost and quality.

Detecting Antibiotic Resistance Genes in The Environment

March 21, 2024 12:00 AM
Authors: Natalie Welsh, Lauren Brooks, Skyler Belka. Mentors: Natalie Welsh, Lauren Books. Insitution: Utah Valley University. When bacteria gain resistance to antimicrobial substances, they become a public health threat due to an inability to treat infections and control outbreaks. Staphylococcus aureus is a common element of the human microbiome that is widely associated with antibiotic resistance. While MRSA (or methicillin-resistant S. aureus) has long been prevalent, new types of antibiotic resistance, including VRSA (or vancomycin-resistant S. aureus), have become an increasing threat in recent years. This research aims to collect samples and use polymerase chain reaction (PCR) to screen for genes associated with resistance to common antibiotics, such as erythromycin, tetracycline, methicillin, and vancomycin. Molecular biology techniques are used to test various resistant genes. First, sample collection uses FloqSwabs dipped in phosphate-buffered saline and swabbed on various locations on the UVU campus (e.g., door handles/knobs, vending machines, elevators, stair rails, water fountains, cash registers and keypads, countertops). Then, DNA from collected swabs was extracted using the DNeasy PowerSoil Kit. PCR was used to amplify the 16S rRNA gene to act as a positive control and confirm the methodology captured bacteria. Once confirmed, we also examined the samples for various antibiotic-resistant genes (e.g., ErmA, ErmC, TetM, TetT, etc.). Lastly, amplified DNA is visualized using electrophoresis gels, observing under UV light to verify amplification. Understanding the genes found on campus and where they are most prevalent will help elucidate the risks to students on UVU’s campus, providing valuable public health knowledge.

Detection of Beet curly top virus in Utah plants

March 21, 2024 12:00 AM
Authors: Elise Bennett, Megan Frisby, Rob Hess, Max Taylor, Erin Riggs, Alma Laney. Mentors: Alma Laney. Insitution: Utah Valley University. Beet curly top virus (BCTV) is a highly destructive virus found in most of the Western United States characterized by curling of the leaves, yellowing, and lack of produce. Historically, BCTV was a key factor in the decline of sugar beet production in Utah, formerly a large factor in the state economy. Commonly found in beets, tomatoes, and peppers, BCT is vectored by the beet leafhopper, Circulifer tenellus, as it feeds on the phloem tissue. Novel hosts of this virus found in Utah include sunflower, mallow, eggplant, hemp, big sagebrush, and Solanum jamesii, the Four Corners potato. Sunflowers showed symptoms of curled leaves and stunting. Similarly, the eggplant developed shriveled leaves and a mosaic at the leaf tips. Four Corners potato, a staple food source of the Indigenous peoples of the Southwest, displayed strong symptoms including stunting, leaf yellowing, and leaf curling. Weedy species and other garden plants displaying various viral symptoms were also collected for testing. Detection was done using published BCTV detection primers and rolling circle amplification with the use of Phi29 polymerase to prepare the genome for whole genome sequencing. A 518 bp region was sequenced to 4x coverage from eight host samples. To ensure the validity of diagnosis, a triple antibody sandwich ELISA was performed confirming the results. Considering the history of BCTV in relation to the agriculture industry of Utah, the discovery of novel hosts is cause for concern since this virus is adaptable and limits crop yield. The diagnosis of BCTV in native plants, such as the Four Corners potato and the big sagebrush, is pressing as it these local flora are unique to the region. The verification of BCTV in these novel hosts allows for the agriculture industry of Utah to prepare prevention methods including the monitoring of beet leafhoppers and increased integrated pest management strategies are needed to protect our local environment.

Monarch Butterflies - What's in their Color?

March 21, 2024 12:00 AM
Authors: Kyri Forman, Craig Thulin, Heath Ogden. Mentors: Heath Odgen. Insitution: Utah Valley University. The monarch butterfly (Danaus plexippus) uses orange filtering pigments in the eyes to discriminate between different hues of orange and yellow and these pigments are believed to be used for deciphering wing color during mate selection (Blackiston et al., 2011). However, it is not known if these orange pigments in the eyes match those in the wings, or if they are present in the wings or eyes of the white monarch (Danaus plexippus nivosus); a variant caused by a mutation in the wing pigmentation process. For this study, pigment extracts from the wings and eyes of typical orange monarchs and white monarchs were characterized using LCMS and fragmentation MS (including MSMS and MSn) and compared. Of the seven pigments known to occur within the wings of orange monarchs (Forman and Thulin, 2022), three were found in the eyes of orange monarchs and little to none of these pigments were present in the nivosus wings or eyes. This lack of orange pigment within the eyes of white monarchs may signify possible color blindness within this mutant. This is supported by previous reports of these butterflies being less likely to breed and forage for nectar, but behavioral studies will be needed to confirm this hypothesis further.

Green Hydrogen Production from Wastes by High Temperature Plasma Pyrolysis

March 21, 2024 12:00 AM
Authors: Veronica Gunyan, Minh Nguyen. Mentors: Kevin Shurtleff. Insitution: Utah Valley University. Our team’s project green hydrogen production from plastic waste by high temperature plasma pyrolysis aims to help aid in reducing waste by taking UVU’s recycled plastic waste, decomposing it using plasma pyrolysis, and turning it into clean hydrogen and carbon in a cost-effective manner. Pyrolysis is the thermal decomposition of organic materials in an oxygen-free zone. Green hydrogen comes from renewable energy and releases no CO2 by products into the air. The purity of the hydrogen can be improved by adjusting components such as temperature in the reactor, range, the gas used, the time frame, catalysts and other operational elements. Energy prospects can be determined by considering the energy consumed subtracted by that produced to determine the net output.

Analysis of Graphene Samples Using a 785nm Raman Spectrometer and Construction of a Carbon Spectral Library

March 21, 2024 12:00 AM
Authors: Seth Stringham, Audrey Elison, Kevin Shurtleff, Dustin Shipp. Mentors: Dustin Shipp. Insitution: Utah Valley University. Graphene, a single atom thick layer of carbon, has become a focal point of research in various fields due to its unique and diverse properties. As many researchers apply new methods to develop this material, it is crucial to have tools and practices in place to determine if the newly created sample is indeed graphene. This study focuses on using a 785nm Raman Spectrometer for analyzing graphene samples. The key analysis methods used in this study are Raman spectral analysis and the construction of a Carbon Spectral Library. The Raman spectroscopy, leveraging the G and 2D bands, helps identify the structural and vibrational properties of graphene. The Carbon Spectral Library provides a comprehensive collection of Raman spectra from diverse carbon-based materials, aiding in accurate comparison and identification. The study's findings emphasize the significance of the 785nm Raman Spectrometer as an effective tool for characterizing graphene samples.

Your Tooths Appetite for Hydroxyapatite

March 21, 2024 12:00 AM
Authors: Megan Wesenberg, Britain Jeppesen, Brianna McDaniel. Mentors: Jodie Lopez. Insitution: Utah Valley University. Abstract: Hydroxyapatite is a natural substance found in bones and the enamel of teeth. When hydroxyapatite is compromised, demineralization begins to occur which can eventually lead to cavities. There are many fluorides on the dental market, some having negative connotations associated with them. Hydroxyapatite products have been explored as an alternative for traditional fluorides to create similar effects without the potential for toxicity. Fluorosis is the main toxicity point addressed. Many patients are apprehensive of the use of fluorides due to possible overconsumption and uncontrolled levels within the local water supply. Because Hydroxyapatite is very biocompatible, access to it does not pose any toxic concerns. Using this alternate material allows these patients access to similar benefits in the oral cavity that fluoride would provide them while also being considerate of their personal beliefs and concerns. Caries are an extremely prevalent issue within the dental office, accounting for pain in patients and a majority of treatment done daily. Caries are very prevalent in the adult population. Hydroxyapatite is a useful substance in caries prevention, another similarity that it has in common with fluorides. Remineralization of these early carious lesions through the aid of hydroxyapatite leads to avoidance of more invasive treatment at a later date. A common use for fluoride is limiting sensitivity of teeth that can be felt from a variety of different stimulants within the oral cavity. Hydroxyapatite can also be used as a desensitizing agent. Hydroxyapatite enters dentin tubules and blocks them, limiting nerve stimulation within the dental pulp.

Establishing and Monitoring New Populations of an Endangered Plant (Phacelia argillacea) Over Several Years

March 21, 2024 12:00 AM
Authors: Tyler R Shaver, Lainey S Smith, Michael T Stevens. Mentors: Michael T Stevens. Insitution: Utah Valley University. Clay phacelia (Phacelia argillacea) was placed on the endangered plant list in 1978; at that time there were less than a dozen specimens alive at a single location on private land. This year, that same location, a steep hillside in Spanish Fork Canyon, had over 300 individuals. For the past four years, at suitable sites on public land nearby, we have been planting clay phacelia seeds and monitoring seedlings to understand the factors that will lead to successful establishment of this plant on public land. Following the planting of 32,400 seeds in 2020 and 13,500 in 2021, germinants that emerged were monitored and counted in the spring, summer, and fall each year between 2021 and 2023. In 2021, ten seedlings emerged, and of those six survived to produce seed. In 2022, 110 seedlings emerged, and of those 3 survived to produce seed. In 2023, 30 seedlings emerged, and of those four have survived as of the last monitoring trip. It is interesting to note that although emergence across the three years varied by as much as 11-fold, the number of plants that survived to reproduce was uniform and consistently low. The majority of seedlings that survived to produce seeds emerged in the late summer and fall. It is likely that monsoonal rains that occur in the late summer and fall make clay phacelia seed production more probable.

Using Carbon and Nitrogen Stable Isotopes to Determine the Diet Composition of Ground Beetles (Coleoptera: Carabidae) in Provo Canyon, Utah

March 21, 2024 12:00 AM
Authors: Hayley Karns, Dylan Bryant, Noah Christensen, David Kirby, Sarah Marchant, Sarah Nicholas, Emmaline Saunders, Hannan Thomas, Nathan Smith, Dan Cavan, Daniele Ghiretti. Mentors: Alessandro Zanazzi. Insitution: Utah Valley University. Arthropods play a crucial role within terrestrial ecosystems by virtue of their substantial consumption of plant matter, their status as primary prey for various organisms, their function as key recyclers of organic material and nutrients in ecosystems, and their pivotal role as primary pollinators. Ground beetles (Coleoptera: Carabidae, or “Carabids”) represent a prominent and highly diverse taxonomic assemblage among arthropods inhabiting temperate forest floors. Despite their significance in these ecosystems, little is known about their trophic structure and level. These knowledge gaps primarily arise from the limitations associated with traditional investigative methods. For instance, the observation of feeding behavior in carabids proves challenging due to their diminutive size and predominantly nocturnal foraging habits. These uncertainties hinder the attainment of an understanding of community structure and trophic interactions both within the arthropod realm and with the vertebrates in their ecosystem. As a result, this research aims to gain a greater knowledge of the trophic structure of carabids using 15N/14N and 13C/12C isotopic analysis. Ground beetles were collected using pitfall traps placed near Big Springs Park (Provo Canyon, northern Utah) in September 2023. The traps were made with two plastic cups: a smaller cup was suspended inside a bigger cup. The smaller cup was partly filled with vinegar to attract the insects whereas the bigger cup was partly filled with monoethylene glycol, a compound that has been shown to preserve the insects without affecting their isotopic composition. Insect samples were collected over a period of four weeks. The beetles were then cleaned with a 2:1 mixture chloroform and methanol, dried, ground in an agate mortar and pestle, and placed in tin capsules for the isotopic analyses. Once the results are obtained, mixing model analysis will allow us to estimate the proportions of different food items based on the stable isotope ratios of consumers and food items and on known fractionations. This knowledge will contribute to a greater understanding of trophic structures and carbon pipelines in local ecosystems of northern Utah, and to a better prediction of ground beetle response to ongoing global warming and the associated changes in forest environments.

Evaluation of Microplastic Pollution in Subterranean Systems and the Impact of Human Visitation

March 21, 2024 12:00 AM
Authors: Stone Smith, Ben Belt. Mentors: Sally Rocks. Insitution: Utah Valley University. Microplastics are particles less than 5 mm in length. These particles act as a vector for heavy metal and carcinogens, which have negative effects on human health. Often invisible to the naked eye, microplastics are extremely mobile and have been found in the most extreme parts of the planet, from the peak of Mount Everest to depths of the Mariana trench. Because microplastics are readily transported via air and water, microplastics have been found in every location exposed to wind or rain. However, one place that is sheltered from wind and rain are caves. In some subterranean environments, the earth acts as a natural filter of the water that descends into caves. It is suspected that caves will have lower levels of microplastics present in their environments compared to surface environments. However, another mechanism for microplastic introduction is human activity. Humans utilize plastics in relatively all synthetic items. Everything from clothing to packaging to regular household items employs the use of plastics, which can abrade to release microplastics. The goal of this research is to determine if caves with high levels of human visitation have higher concentrations of microplastics than caves with little to no human visitation. Analysis of subterranean water samples will reveal if microplastics are invading cave environments regardless of human activity, and through what mechanisms. A consequence of microplastic pollution in cave environments is the capture of plastic particles within mineral matrices. As mineral rich water evaporates in caves, the minerals left behind form speleothems that could capture plastic particles and thus preserve them (e.g. stalactites, stalagmites, soda straws, etc.). With a better understanding of the presence or absence of microplastics in caves, efforts can be made to minimize plastic accumulation and prevent microplastics from entering the geologic record of the cave.

The Primary and Secondary Metabolites of Tomato as a Response to Herbivory and Simulated Herbivory

March 21, 2024 12:00 AM
Authors: Iris Cepeda, Tabitha Weir, Jonathan Cook, Honey Ordonez. Mentors: Olga Kopp. Insitution: Utah Valley University. Solanum lycopersicum (tomatoes), are beloved herbaceous crops well known for their red bearing fruits. They are best grown in well-draining soils with access to full sun and are endemic to South America but grow all across the world where the conditions allow. Tomato fruits provide a quality source of phytochemicals and antioxidants such as lycopene, vitamin C, beta-carotene, and phenolic compounds which can substantially improve one’s healthy diet. S. lycopersicum are members of the nightshade family, which are known for their production of often toxic glycoalkaloids. The presence of these compounds usually deters herbivores by increasing their concentration as a defense response. There are, however, herbivores like Manduca sexta (tobacco hornworms) that feed on members of the nightshade family by dealkylating these glycoalkaloids. It is hypothesized that plants have the ability to modulate their defensive response based on queues from the environment and from their herbivore pests. Our research objective is to determine whether a S. lycopersicum plant undergoing defoliation from M. sexta will have the same molecular response as a plant undergoing simulated herbivory. Four treatment groups will be used with each treatment group having 8 replicates. Before treatment begins, the groups will be isolated by a non-permeable surface so air-borne defense signals from one group do not elicit a response in another. In the herbivory treatment group, M. sexta will be allowed to feed for a 24-hour period to account for diurnal and nocturnal herbivory, as well as high plant enzymatic response. Damage treatment 1 will simulate herbivory using a hole-punch, avoiding the midvein. Damage treatment 2 will simulate herbivory using a single transverse cut across the leaf blade and midvein. The undamaged control will have no herbaceous or mechanical damage done. After the treatment period, half of the leaf matter from all groups will be collected and frozen in liquid nitrogen to preserve all metabolic processes and GCMS will be used to analysis metabolite differences. The other half of the leaf matter will be analyzed using UV-spectrophotometer analysis with bromocresol green to compare the glycoalkaloid expression between the treatments. It’s expected that there will be a reduced expression of the defense glycoalkaloids in the herbivory group of S. lycopersium when compared to the two defoliation groups. While the three treatments could respond similarly to their treatments by primary metabolite expression, the type of defoliation could have a greater effect on this than the herbivory group.

Survey of Blow Fly (Diptera: Calliphoridae) Species Across Utah and Salt Lake Counties

March 21, 2024 12:00 AM
Authors: Haylee Beck, Lauren Weidner, Carl E Hjelmen. Mentors: Carl E Hjelmen. Insitution: Utah Valley University. Blow flies, scientifically known as family Calliphoridae, are important primary colonizers of remains that play a crucial role in decomposition, making them useful in forensic investigations for estimating a time of colonization (TOC). Unfortunately, there is little information on the species and distributions of blow flies present in Utah. Our research seeks to address this issue through collection, preservation, and identification of these blow flies. To collect the specimens, traps baited with chicken liver were set up in various locations across Salt Lake and Utah Counties. While we have only collected from these two counties thus far, our intention is to gather flies across the state, spanning both rural and urban environments. We will then use standard metrics of diversity to compare the species makeup in each location. The results of our research offer significant insights into the biodiversity, distribution, and ecological functions of these flies and their development in different ecosystems. In addition, this research has far-reaching implications in the field of forensics. These findings will contribute significantly to our understanding of blow fly distribution and behavior, providing valuable information for forensic investigations in our region.

Monte Carlo Raman Spectroscopy Simulation: Unlocking Computational Speed with GPU Acceleration

March 21, 2024 12:00 AM
Authors: Thomas Caldwell. Mentors: Dustin Shipp. Insitution: Utah Valley University. In this research project, we have transformed an existing Raman spectroscopy simulation, enhancing its performance and capabilities through the integration of parallel computing with GPU acceleration. This significant improvement in computational time allows us to break through previous computational limitations, enabling more sophisticated and complex applications of the simulation. We are currently focused on two main objectives: assessing the viability and potential of spatially offset Raman spectroscopy (SORS) for deeper tissue analysis, and exploring the possibilities of topographical imaging using Raman techniques.

Production of Antibiotics in Soil Bacteria against ESKAPE Pathogens

March 21, 2024 12:00 AM
Authors: Cori Bailie, Arlene Majers, Katherine Judge. Mentors: Olga Kopp. Insitution: Utah Valley University. Ever since antibiotics have been in use, bacteria have been evolving to develop resistance against them. Each year, the number of people who die from previously treatable infections increases, showcasing the seriousness of this global issue. According to the CDC, facilities were overwhelmed during the 2020 pandemic, decreasing antibiotic production. By refocusing on discovering and producing new antibiotics, resistance can once again begin to be combatted. Bacteria found in soil samples were used to test for antibiotic production, using safe relatives to the ESKAPE pathogens. Starting with three master plates on Tryptic Soy Agar, 39 total bacterial colonies were studied. Colonies of interest were then PCR tested for DNA sequencing, and will be run through multiple different chemical tests for classification. Results showed that three different colonies displayed antibiotic activity. Colony 7 on master plate A produced antibiotics against Bacillus subtilis. Colonies 6 and 13 on master plate B, both produced antibiotics against Mycobacterium smegmatis, and Staphylococcus aureus. The results suggest that there are more soil bacteria to be discovered that may be able to produce antibiotics for common infections that are getting harder to treat. Further testing needs to be done to determine whether these colonies are safe for human therapy.

Creating a universal framework for reconstructing phylogenies: Building trees at your fingertips using R

March 21, 2024 12:00 AM
Authors: Barbara Jetton, Carl E Hjelmen. Mentors: Carl E Hjelmen. Insitution: Utah Valley University. This project’s emphasis is the creation of an accessible and reusable tool to be used in broader scientific inquires of evolutionary relatedness. As of January 2023, GenBank contains 2.9 billion nucleotide sequences representing 504,000 distinct species. Despite this abundance of data, comprehensive and up to date phylogenies are lacking, impeding investigation into genetic histories and trait evolution. To address this problem, I am developing an open-source pipeline to expedite the construction of these evolutionary trees. I have a specific aim of creating a phylogeny for the order Diptera (flies) in order to investigate the evolution of the chromosome numbers for over 2500 species with chromosome count data on karyotype.org. I use R code, and the packages “reutils”, “ape”, and “seqinr”, to create reusable universal scripts which pull accession numbers from NCBI GenBank for each species based on the requested gene names. A second script was built to use the curated accession numbers to pull FASTA sequence data for each gene and write a multi-FASTA file for each gene, resulting in a comprehensive dataset necessary for alignment and phylogenetic tree construction. This effort will result in updated insights on the evolutionary history of Diptera related to chromosome numbers and can be used in further research in comparative biology. Additionally, these scripts can be used to investigate and reconstruct phylogenetic information for any species group with sequence data available on GenBank.

Pubertal Development and Estrous Cycling in POMC-deficient Mice

March 21, 2024 12:00 AM
Authors: Jacob Prescott. Mentors: Zoe Thompson. Insitution: Utah Valley University. The pro-opiomelanocortin (Pomc) gene encodes POMC, which is differentially processed to produce adrenocorticotropic hormone (ACTH), beta-endorphin, and three melanocyte-stimulating hormones, among other peptides. POMC neurons are principally located in the arcuate nucleus (Arc) of the hypothalamus, where they are essential in the control of food intake, energy expenditure and body weight. Several different mutations in the POMC gene have been shown to cause early-onset obesity and adrenal cortical insufficiency in humans. We are working with a mouse model with a hypothalamic-specific POMC deficiency. These mice exhibit hyperphagia, early-onset obesity, and also seem to be infertile. We are interested in examining potential differences in pubertal development, as well as reproductive function. Specifically, we will examine day of vaginal opening, day of first estrus, and estrus cycling in juvenile female POMC-deficient mice. The estrus cycle has four stages: proestrus, estrus, metestrus and diestrus. Although hormone levels in the blood differ during the four stages, these are difficult and expensive to measure. A less invasive measurement is to take vaginal cell samples each day and examine them under the microscope. Three different types of cells are present in different ratios depending on the stage of the cycle: nucleated epithelial cells, leukocytes, and cornified epithelial cells. We will track estrus cycle changes during pubertal development and after to see if there are differences between wildtype, heterozygous, and homozygous POMC-deficient mice.Learning more about how POMC-deficiency affects reproductive function may help us understand more about the link between obesity and infertility.

Methods for assessing Ephydra gracilis populations across Great Salt Lake

March 21, 2024 12:00 AM
Authors: Cora Rasmuson, Carly Biedul, David Herbst. Mentors: Carly Biedul. Insitution: Westminster College. Great Salt Lake (GSL) is a unique ecosystem known for its elevated saline conditions, supporting diverse biological communities. However, GSL's vital habitats for birds and invertebrates are diminishing due to climate variability and water diversions. The keystone species, Ephydra gracilis, known as brine flies, is central to this ecosystem's food web.Microbialite mounds of haloarchaea, algae, and cyanobacteria sustain E. gracilis, but receding shorelines and record-low lake levels intensify salinity, reducing food sources and brine fly survivability. This decline has far-reaching consequences, as E. gracilis accounts for over 50% of the diet for 10 million migratory birds at GSL.Ongoing research is focused on refining methods for monitoring populations of Ephydra species in response to changing salinity and elevation levels. This research is vital for the preservation of the lake's ecosystem and biodiversity.

Identifying and photographing the instars of a parthenogenetic mayfly (Centroptilum trianguilfer; Ephemeroptera)

March 21, 2024 12:00 AM
Authors: Heidi Kipp, Annika Jones, . T. Heath Ogden. Mentors: T. Heath Ogden. Insitution: Utah Valley University. The purpose of this research is to identify and document mayfly instars from a parthenogenetic population of individuals being raised in the lab. Instars are the developmental stages of an arthropod between molts. Mayflies (and other non holometabolous insects) go through incomplete metamorphosis, moving from egg to nymph stages, and then to subimago (unique to mayflies), and imago (or adult). Previous research indicates the number of instars to be between 12-45 depending on the species, and the species we studied is estimated to have around 15. During each instar, mayflies shed their exoskeleton. The difference between each instar is vital to understanding the changes in gene expression and overall life cycle of a species. Instars have subtle differences, and identifying them will help further research into which genes are involved in producing specific morphological characteristics. Defining these structures, such as the forming of eyes or wings, are of particular interest in evolutionary phylogenetics. We raised Centroptilum trianguilfer (Ephemeroptera: Baetidae) in a controlled water tank, collecting and dating egg samples from mature imagos. Water is maintained with standard ion composition with 130-400 conductivity. Once the eggs hatched, we performed daily inspections and measurements using a 40x stereomicroscope microscope and Lumenera Infinity Analyze. We are using basic appearance, size and morphology) to separate instars. We will identify and photograph each instar. Samples from the different instars, subimagos, and adults will be acquired and used to generate transcriptome data. We propose that our research will aid in the investigation of mayfly evolution and their genetic mechanisms of control.