Poster Symposium Presentations

1. Poster Withdrawn

2. EVIDENCE-BASED TELEMETRY INCLUSION CRITERIA: A REVIEW OF LITERATURE TO IMPROVE PATIENT MONITORING PRACTICES

Author(s):

Bobi Biggs, Millikin University

Faculty Sponsor(s):

Dr. Jamie Nickell

Abstract/Description:

Background: Continuous cardiac telemetry monitoring is a standard practice for hospitalized patients at risk of arrhythmias. Recent evidence reveals substantial overuse, with up to 43% of patients monitored without clear clinical indications, leading to alarm fatigue, increased costs, and potential compromise of patient safety.

Purpose: This review synthesizes current literature to identify evidence-based criteria for telemetry inclusion and evaluates strategies to optimize patient monitoring.

Methods: A systematic search of PubMed, CINAHL, Google Scholar, and institutional repositories was conducted for studies published between 2011 and 2026. Inclusion criteria focused on research addressing telemetry practices, guideline-based interventions, and patient outcomes. Studies were critically appraised using the Melnyk hierarchy.

Results: Most studies reviewed were observational (Level IV) or expert consensus (Level VII), with few randomized controlled trials. Integrating American Heart Association guidelines into electronic health records and employing decision support tools consistently reduced inappropriate telemetry use without increasing adverse events. Educational interventions alone were insufficient; system-level changes proved necessary for sustained improvement. Gaps remain in long-term patient outcomes, multicenter validation, and technology integration.

Conclusion: Evidence-based telemetry inclusion criteria, supported by guideline adherence and workflow integration, can reduce overuse and improve patient safety. Further high-level research is needed to address knowledge gaps and inform best practices for patient monitoring.

3. LONG-TERM EFFECTS OF THE GLUTEN-FREE DIET IN CELIAC DISEASE PATIENTS

Author(s):

Joshua Platzbecker, Millikin University

Faculty Sponsor(s):

Dr. Tara Morris

Abstract/Description:

Celiac disease is a chronic autoimmune disorder caused by the ingestion of gluten, leading to damage in the small intestine and a variety of symptoms. The main treatment is a strict gluten-free diet, which can help improve symptoms and promote healing. However, following this diet can be difficult and may not fully address the overall impact of living with the disease. This project explores how effective a gluten-free diet is in improving outcomes for individuals with celiac disease. A review of current literature was conducted to examine symptom control, nutritional status, quality of life, and long-term health outcomes. The findings show that while a gluten-free diet can significantly reduce symptoms and support intestinal healing, it does not always eliminate challenges such as nutritional deficiencies, social restrictions, and decreased quality of life. These results suggest that managing celiac disease requires more than just dietary changes. Healthcare providers, especially nurses, play an important role in providing education, support, and ongoing monitoring. Future efforts should focus on improving adherence to the diet and addressing the broader challenges individuals face when living with celiac disease.

4. LITERATURE REVIEW: THE LONG-TERM PSYCHOLOGICAL EFFECTS ON FAMILIES AND PATIENTS FOLLOWING A SINGLE OR RECURRENT PEDIATRIC INTENSIVE CARE UNIT (PICU) ADMISSION

Author(s):

Tatum Harman, Millikin University

Faculty Sponsor(s):

Dr. Audra Trump

Abstract/Description:

Introduction: Pediatric intensive care unit (PICU) admissions expose children and their families to highly stressful, potentially traumatic experiences, increasing the risk of long-term psychological effects such as depression and post-traumatic stress disorder (PTSD). While prior research explores psychological outcomes after PICU hospitalization, few studies directly compare the long-term effects of single and or recurrent admissions on patients versus their families. This review synthesizes current evidence on these outcomes and highlights nursing interventions that support psychological well-being.

Methods: A comprehensive literature search was conducted using PubMed Central, MEDLINE, CINAHL, PsycINFO, Cochrane Library, and Google Scholar. Search terms included PICU, psychological outcomes, family impact, PTSD, and nursing interventions. Inclusion criteria were peer-reviewed, English-language articles published between 2016 and 2025 with full-text access. Studies were appraised using the Hierarchy of Evidence Pyramid (Levels I-VI) and included diverse pediatric populations and family members across various clinical settings and countries.

Discussion: Evidence shows that PICU hospitalization is associated with significant long-term psychological effects for both patients and families, including PTSD, anxiety, and depression. Children may be more vulnerable due to developmental factors and limited coping abilities. Psychological outcomes between patients and families are closely linked and may persist for years; however, standardized interventions to support recovery remain limited.

Summary: PICU survivors and their families commonly experience lasting psychological distress. Despite identified risk factors, few interventions exist to support their well-being, underscoring the need for improved psychosocial care strategies.

5. DRUGS KILL, SERVICES HEAL

Author(s):

Ella Michel, Millikin University

Faculty Sponsor(s):

Scott Mathers

Abstract/Description:

My research proposal examines social services in one of Philadelphia's most socially disorganized neighborhoods. This research includes a qualitative analysis of social service providers, clients, and police. The research will analyze social service providers who provide case management, needle exchange programs, narcan distribution, showers, food, water, shelter, and faith based initiatives to healing. This neighborhood is nationally recognized for being highly socially disorganized. Therefore, it is important to analyze those perceptions. The research's main goal is to evaluate the perception of these services pertaining to effectiveness and efficiency. The research will identify the strengths and weaknesses, gaps within the community, barriers to accessing services, and if the programs effectively meet the needs of the people they serve.

6. TABOR STUDENT-MANAGED INVESTMENT PORTFOLIO: PERFORMANCE AND STRATEGY REVIEW

Author(s):

Bryson Boes, Millikin University

Jack Bollinger, Millikin University

Tanner Buehnerkemper, Millikin University

Jacob Bullock, Millikin University 

Sam Bushur, Millikin University

Nicholas Farsalas, Millikin University

Erin Fleisher, Millikin University 

Nils Gmelin, Millikin University

Delaney Higgins, Millikin University 

Tyler O'Neill, Millikin University 

Jaron Rittner, Millikin University

Thomas Swartz, Millikin University 

Oakley Tate, Millikin University

Faculty Sponsor(s):

Dr. Michael J. Osei

Abstract/Description:

This poster evaluates the activities, performance, and strategic investment decisions of the student-managed Tabor Investment Portfolio for the period January 2 to December 31, 2025. It reviews market conditions, sector performance, and portfolio management decisions made by the Spring 2026 student managers, assessing outcomes relative to the S&P 500 benchmark and the guidelines established in the Investment Policy Statement.

7. ISLANDS OF IMMIGRATION: DIVERGENT APPROACHES TO REFUGEE INTEGRATION IN IRELAND AND AUSTRALIA

Author(s):

Lila Castillo, Millikin University

Faculty Sponsor(s):

Dr. Laura Dean

Abstract/Description:

Refugees face a variety of challenges when settling into a new country whether those challenges are legal, institutional, or economic. Both Ireland and Australia are common destinations for refugees, yet resettlement can be harder than expected. My comparative case study analysis of Ireland and Australia seeks to determine how different immigration policies impact refugee integration. Policies influence the levels of integration that refugees have in both countries and can limit the opportunity available to these migrants. By analyzing a variety of integration data this research examines the differing approaches of two island nations with extensive immigration histories.

8. Poster Withdrawn

9. MUSEUM FUNDING FOR POLITICAL NARRATIVES

Author(s):

Harris Dorgan, Millikin University

Faculty Sponsor(s):

Dr. Laura Dean

Abstract/Description:

The topic of museum funding has become increasingly politicized since the start of the second Trump administration in 2025. Underscoring multiple actions relating to museums was Executive Order 14253 titled, "Restoring Truth and Sanity to American History," signed on March 27th, 2025, and directed at the Smithsonian Institute. The order sparked the ongoing debate over the cultural role of museums, particularly in relation to their portrayal of American or Western history. Although this debate is not new, the actions of the Trump administration have called into question the role federal funding plays in determining the cultural narratives museums should portray. This research uses the Narrative Policy Framework (NPF) to examine policy narratives with museum funding, which are an important instrument in advancing public policy goals. Through their portrayal of history or culture, museums can play a substantial role in shaping collective memory. Because of this, policymakers have begun to recognize the importance of museums in portraying certain narratives of the United States, as evidenced by the executive order to reshape its exhibitions toward American exceptionalism. The recognition by politicians of the need for museums to adhere to their political ideology in "the culture war" demonstrates that the contents of museums have become increasingly politicized, thus making NPF an effective tool in understanding federal funding for museums. Because museums, as significant cultural institutions, play an important role in advancing a certain narrative, funding for museums is used by politicians to influence policy narratives.

10. BEYOND THE LECTURE HALL: THE CASE FOR ACTIVE LEARNING IN POLITICAL SCIENCE HIGHER EDUCATION

Author(s):

Haley Willan, Millikin University

Faculty Sponsor(s):

Dr. Laura Dean

Abstract/Description:

Higher education is shifting from traditional based lectures to active and performance learning. My research focuses on how this shift is beneficial for college students in the discipline of political science. Political science requires critical thinking, civic engagement, communication, teamwork, and other skills that are not fully developed solely with traditional based lectures but require some type of real-world application. Active learning simulations allow students to apply their knowledge and improve their skills in low-risk environments. Simulations are also good resume boosters and networking opportunities. My study focuses specifically on Model Illinois Government, which Millikin participates in every year. I surveyed student participants at the Model Illinois Government simulation in 2026 to assess the impact that active learning simulations have on overall learning goals. The results reveal that active and performance learning methods are more effective than traditional based lectures. My research demonstrates why it is pertinent to continue to fund these classes and provide students this important opportunity.

11. THE EFFORT EFFECT: THE ABILITY TO BECOME CLOSER TO ANYONE

Author(s):

Lorenzo Tagliapietra Schons, Millikin University

Faculty Sponsor(s):

Dr. Linda Collinsworth

Abstract/Description:

The research intends to understand if and how the action of putting in effort plays a role in someone making new friends or strengthening friendships. Considering this, the study plans to identify the importance that people give to different behaviors representing effort to secure a friendship or make it closer. The significance of the research contributes to the understanding of how people can improve the quality of their friendships, either by making new friends or establishing new parameters for current friendships. By the end of the study, it may be possible to analyze how different interactions between friends may have a different level of importance for friendships.

12. GAMIFICATION

Author(s):

Emily Mars, Millikin Student

Faculty Sponsor(s):

Elizabeth Hollendonner

Abstract/Description:

This poster is broken up into two parts. An introduction to gamification and the application of gamification in relation to human trafficking. The goal of this project was to gain more information about gamification and further perspectives of human trafficking.

13. ASSESSING PERCEPTION OF MUSICAL SIMILARITY IN MUSICIANS AND NON-MUSICIANS: AN EMPIRICAL STUDY

Author(s):

Melis Barutcu, Millikin University

Faculty Sponsor(s):

Dr. Katherine Leo

Abstract/Description:

In music composition copyright cases, the "Lay Listener Test" is administered, in which a jury must listen to two recordings and determine whether they sound substantially similar enough to warrant a decision of copyright infringement. This task encourages jurors to make judgments simply based on what they hear, whether or not the underlying compositional elements of the music are recognized or understood. The present study recreated the Lay Listener Test in a psychological experiment. It first aimed to determine whether the manner of performance (musical elements such as tempo, instrumentation, key, and style) of a recording influenced perception of similarity. A second variable of music experience was observed, with the purpose of studying how perception of similarity may differ between musicians and non-musicians. Participants (N=52) each completed one session in which they were tasked with listening to two pairs of songs used in music copyright cases and rating their perception of similarity. Results supported that manner of performance has a significant effect on participant perception of similarity; when surface level musical elements were altered, participants rated recordings as less similar. Results did not indicate a significant interaction between manner of performance and music experience affecting perception of similarity. This study highlights the complexity of the lay listener task as used in copyright infringement proceedings and suggests potential reevaluation of how substantial similarity is determined and the juror's role. 

14. NURSING INTERVENTIONS VS. STANDARD CARE FOR THE PREVENTION OF DELIRIUM IN ADULT ICU PATIENTS

Author(s):

Grace Harmston, Millikin University 

Luke Rogers, Millikin University

Faculty Sponsor(s):

Dr. Teresa Gulley

Abstract/Description:

Delirium is a common complication in the intensive care unit. Early recognition and treatment is imperative to prevent long term effects. Nurses play a key role in identifying and managing delirium. The purpose of this literature review is to determine if nurse-led interventions lead to better delirium outcomes than standard care. A more well-rounded understanding of this topic could lead to a decreased incidence of delirium and improved patient outcomes. If nurse-led interventions are determined effective in the prevention and management of delirium, it is crucial that the healthcare system strongly consider this form of care rooted in evidence-based practice.

15. SEPSIS RECOGNITION AND EARLY INTERVENTION BY EMERGENCY DEPARTMENT NURSES

Author(s):

Taiylor Daykin, Millikin University

Faculty Sponsor(s):

Dr. Teresa Gulley

Abstract/Description:

Sepsis is a life-threatening condition that requires rapid recognition and treatment to prevent progression to septic shock, organ failure, and death. Emergency department nurses have a crucial role in identifying early signs of sepsis and initiating timely interventions that can significantly improve patient outcomes. This literature review was conducted to examine current evidence related to sepsis recognition and early intervention by emergency department nurses. The review focused on factors that influence early identification of sepsis, including the use of standardized screening tools, timely antibiotic administration, nursing education, and communication strategies among healthcare providers. Findings suggest that early recognition, rapid initiation of treatment bundles, and improved nurse education are essential in reducing sepsis-related morbidity and mortality. Understanding these factors may help guide nursing practice and support interventions that promote earlier sepsis identification and improved patient outcomes in emergency care settings.

16. PHARMACOLOGICAL AND NON-PHARMACOLOGICAL PAIN MANAGEMENT IN THE NICU

Author(s):

Megan Overbeck, Millikin University

Faculty Sponsor(s):

Dr. Teresa Gulley

Abstract/Description:

Pain management has been shown to affect the physiologic changes in patient's condition during their stay in the Neonatal Intensive Care Unit. A literature review was conducted to determine if pharmacological or non-pharmacological pain management techniques are better in controlling pain in the NICU. Results support a combination of pharmacological and non-pharmacological interventions to control pain in neonates in the NICU. Achieving adequate pain management in patients in the NICU leads to better physiological outcomes.

17. IMPLICIT BIAS: HOW IT IMPACTS CARE IN SICKLE CELL PATIENTS

Author(s):

Maggie Damery, Millikin University 

Tre Spence, Millikin University

Faculty Sponsor(s):

Dr. Teresa Gulley

Abstract/Description:

Sickle cell disease (SCD) is a hereditary blood disorder characterized by abnormal hemoglobin that causes red blood cells to become rigid and sickle-shaped. These abnormal cells can obstruct blood flow, leading to recurrent pain episodes, organ damage, and increased risk of infection. SCD primarily affects individuals of African, Mediterranean, Middle Eastern, and South Asian descent. This literature review was conducted to examine the effects of implicit bias on the care of patients with sickle cell disease. Despite advances in treatment, patients often face barriers to care, including healthcare disparities, bias, and stigma. Increasing awareness, promoting early intervention, and addressing inequities in care are essential to improving health outcomes and quality of life for individuals living with SCD.

18. PEDIATRIC INTENSIVE CARE PATIENTS: DELIRIUM PREVENTION, IDENTIFICATION, AND MANAGEMENT

Author(s):

Goldie Gregory, Millikin University

Faculty Sponsor(s):

Dr. Teresa Gulley

Abstract/Description:

There has been extensive research done establishing a clear link between delirium and increased mortality. A literature review was conducted to summarize the importance of identification, prevention, and treatment of delirium among pediatric intensive care patients. Literature was found in academic databases and screened using strict criteria. Within the articles, it was found that implementation of assessment tools increased identification and diagnosis of delirium whereas in the past delirium was often missed. High rates of delirium occur among the pediatric population in hospitals across the country. Standard assessment, treatment, and prevention protocols for pediatric delirium need to be the focus of continued research to influence evidence based practice and improve outcomes.

19. THE IMPACT OF PATIENT EDUCATION ON REDUCING RECURRENT ASTHMA EXACERBATIONS IN ADOLESCENTS

Author(s):

Chloe Luttrell, Millikin University

Faculty Sponsor(s):

Dr. Teresa Gulley

Abstract/Description:

Asthma is a chronic lung condition that affects many adolescents each year. Nurses are responsible for providing patients with proper education to prevent further complications. The purpose of this study was to conduct a thorough literature review to evaluate the effectiveness of patient education in reducing recurrent asthma exacerbations. After a systematic search of the literature and screening, 10 articles were included in this literature review. Common themes included the effects of patient education on knowledge, of interventions on adherence, and of interventions on clinical outcomes. The results showed a significant impact of patient education on preventing recurrent asthma exacerbations in adolescents. Clinical implications may include, but are not limited to, nurses providing better care to adolescent asthmatic patients, resulting in better outcomes such as better control and fewer comorbidities

20. NON-INVASIVE ASSESSMENT OF BLADDER DIVERTICULUM BIOMECHANICS USING DYNAMIC MAGNETIC RESONANCE IMAGING

Author(s):

Emily D. Clevidence, Millikin University

Juan Pablo Gonzalez-Pereira, University of Wisconsin-Madison

Alejandro Roldan-Alzate, University of Wisconsin-Madison 

Matthew D. Grimes, University of Wisconsin-Madison

Faculty Sponsor(s):

Dr. Travis Wilcoxen

Abstract/Description:

Bladder diverticula (BD) are pouches extending outside the bladder lumen from herniation of the bladder mucosa through the muscularis propria. These may result in lower urinary tract symptoms (LUTS) or be asymptomatic and are uncommon but notable in urologic patients. The clinical relevance of BD in LUTS treatment decisions is unclear, and the biomechanical effects of BD treatment versus surveillance remain unstudied. Dynamic magnetic resonance imaging (MRI) is a non-invasive method used to study BD biomechanics and determine effects on voiding dynamics, post-void residual (PVR), and treatment guidance. Three male patients underwent voiding-phase MRI analysis. Images of the voiding bladder were obtained using a 3D Differential Subsampling and Cartesian Ordering acquisition sequence and segmented using MIMICS. Each bladder and diverticula were segmented, including urine inside the bladder, to determine PVR, volumes, and BD biomechanics. During voiding in the asymptomatic BD patient, the diverticulum protruded during detrusor contraction, resulting in urine reuptake into the BD. After voiding, the BD emptied urine back into the bladder, resulting in an incomplete void. The LUTS BD patient experienced BD expansion and filling at voiding onset. The bladder did not noticeably decrease in volume while the BD did, suggesting increased pressure before voiding. The healthy patient voided at a near-constant rate with coordinated detrusor contraction. This is the first study investigating BD biomechanics using dynamic MRI. MRI provides a valuable tool for understanding BD biomechanics and their interaction with bladder function. Observed differences in BD urodynamics may inform future surgical management decisions.

21. H5N1 AVIAN INFLUENZA ANTIBODY DETECTION IN SONGBIRDS AND RAPTORS

Author(s):

Lilia S. Monigold, Millikin University

Faculty Sponsor(s):

Dr. Travis Wilcoxen

Abstract/Description:

Highly pathogenic avian influenza (HPAI) H5N1 has spread globally in bird populations over the last five years with high mortality rates. Monitoring exposure in bird species is important for understanding how the virus spreads and which species are contributing the most to transmission. In this study, we measured H5N1-specific Immunoglobulin Y (IgY) antibodies in songbirds, wild-trapped raptors, and rehabilitation raptors housed at the Illinois Raptor Center in Decatur, Illinois. Plasma samples were collected between 2023 and 2025. Antibody presence was detected using an indirect enzyme-linked immunosorbent assay (ELISA) to determine prior exposure to H5N1. Results showed antibody prevalence varied by year and species, with trends indicating a peak in exposure during 2024 across the three bird groups tested. Migratory songbird species had the highest antibody prevalence, which suggests they act as carriers of the virus across long distances. Raptors also showed evidence of exposure, with higher rehabilitation raptor exposure largely driven by Bald Eagles. Overall, these findings show why avian influenza surveillance is important to better understand patterns of exposure and potential pathways of H5N1 transmission among bird populations.

22. DETERMINING THE ABILITY OF PSEUDOMONAS SP. TO INHIBIT THE GROWTH OF VARIOUS BACTERIAL STRAINS IN THE PRESENCE OF NAPHTHALENE

Author(s):

Zahra Haji, Millikin University

Dr. Jenna Smith, Millikin University

Faculty Sponsor(s):

Dr. Jenna Smith

Abstract/Description:

Antibiotic resistance has become very concerning, especially among ESKAPE pathogens. The Tiny Earth initiative explores non-pathogenic soil bacteria that produce antibiotic compounds as a competitive advantage. This study used a Pseudomonas strain from Decatur, IL, to test inhibition of ESKAPE safe relatives in the presence of naphthalene. We hypothesized that the strain would grow in the presence of naphthalene and inhibit ESKAPE safe relatives. Using spread patch assays, we found that the Pseudomonas strain inhibited Enterobacter aerogenes and Pseudomonas putida in the presence of naphthalene. When glucose was added as a carbon source, Acinetobacter baylyi and Escherichia coli, which could not grow on naphthalene media alone, were able to grow and were inhibited by the Pseudomonas strain. Varying pH showed inhibition of Enterobacter aerogenes at pH 6 and 7 and Pseudomonas putida at pH 7. These findings support the potential for soil-derived Pseudomonas isolates for antimicrobial production and naphthalene-related bioremediation.

23. PREVALENCE OF ASPERGILLOSIS IN AMERICAN KESTRELS (FALCO SPARVERIUS) IN CENTRAL ILLINOIS.

Author(s):

Hailey Gula, Millikin University

Travis Wilcoxen, Millikin University

Faculty Sponsor(s):

Dr. Travis Wilcoxen

Abstract/Description:

Aspergillosis is a fungal infection caused by the inhalation of fungal spores. These fungal spores are commonly found in warm, moist, decomposing organic matter. Aspergillosis cases have been reported in mammals and birds; however, avian species are known to be especially susceptible to Aspergillosis, due to the constant exposure of the spores within their ecosystem. The purpose of this study is to determine the prevalence of Aspergillus fumigatus-specific antibodies in wild-captured American Kestrels in Central Illinois. We hypothesized that American Kestrels would have evidence of higher IgY antibodies compared to IgM antibodies, indicating common exposure in the population, but successful conversion to long-term antibodies. We used an indirect ELISA for IgM and IgY with Aspergillus gliotoxin as the antigen target to determine infection history for 84 kestrels. We found significantly elevated IgM to gliotoxin in 3 kestrels (3.57%) and significantly elevated IgY to gliotoxin in 8 kestrels (9.52%). Overall, our findings suggest that American Kestrels are rarely exposed to enough gliotoxin to mount full immune responses to the antigen.

24. QUANTITATIVE HPLC ANALYSIS OF AMOXICILLIN AND AMOXICILLIN-CLAVULANATE PHARMACEUTICALS FROM CAMEROON, KENYA, LIBERIA, AND MALAWI

Author(s):

Evan J. Allen, Millikin University

Dr. Kyle N. Knust, Millikin University

Faculty Sponsor(s):

Dr. Kyle Knust

Abstract/Description:

Substandard and falsified pharmaceuticals are highly prevalent around the world, accounting for nearly one in every ten medicines in low- and middle-income countries. In collaboration with the Distributed Pharmaceutical Analysis Lab (DPAL) and the University of Notre Dame, amoxicillin and amoxicillin-clavulanate samples were obtained from Cameroon, Kenya, Liberia, and Malawi to be analyzed using reversed-phase HPLC to determine the active pharmaceutical ingredient (API) content. With respect to amoxicillin-clavulanate, the United States Pharmacopeia (USP) defines pharmaceuticals consisting of an API outside the range of 90-120% as substandard. Before results can be reported to DPAL, a series of system suitability tests must be completed with the API to assess both the HPLC and researcher's ability to produce precise and accurate results. These tests include linearity, limit of detection and quantitation, precision, accuracy and range, spike recovery, and specificity. All system suitability tests were completed for amoxicillin and amoxicillin-clavulanate before ten amoxicillin capsules, five amoxicillin oral suspensions, and sixteen amoxicillin-clavulanate tablets were analyzed. One amoxicillin suspension and one amoxicillin-clavulanate tablet were determined to be substandard.

25. INVESTIGATION OF NEW INORGANIC PIGMENTS BASED UPON THE PEROVSKITE STRUCTURE

Author(s):

Abbey Burkhalter, Millikin University 

Dr. Paris Barnes, Millikin University

Juan Sebastian Lopez, University of Illinois Urbana-Champaign

Faculty Sponsor(s):

Dr. Paris Barnes

Abstract/Description:

The purpose of this research project was to investigate new inorganic pigments based upon perovskite structure using X-ray crystallography and absorption spectroscopy. By basing the compounds on the previously discovered red Y(Cr,Al)O3 perovskite, we attempted to find a Cr3+-to-Al3+ ratio that could prepare a pink-colored compound. The complete crystal structures of any new metal oxides we synthesized were determined, and their photometrics were measured, including both wavelengths of light absorbed and reflected.

26. Poster Withdrawn

27. ELIMINATING IMPURITIES IN SR2ZNW1-XMOXO6 DOUBLE PEROVSKITES

Author(s):

Elijah R. Rojas, Millikin University

Dr. Paris W. Barnes, Millikin University

Faculty Sponsor(s):

Dr. Paris Barnes

Abstract/Description:

Previous students have worked on investigating the double perovskites Sr2ZnW1-xMoxO6, where x is between 0 and 1, for their optical properties. However, X-ray diffraction data from previous attempts to prepare Sr2ZnW1-xMoxO6 compositions revealed that most of the compounds are impure. The goal of this research project is to develop a more efficient method to synthesize these compounds with varying x values to achieve a purity that is greater than 99%. This would introduce a potential new semiconducting material that could be used in solid-state lighting applications. The main problem that lowers the final compound's purity is a loss of zinc oxide in the final product due to its volatility at higher temperatures. Five different compounds were synthesized with x values of 0, 0.25, 0.5, 0.75, and 1.0. After grinding and combining the reactants, an initial heating of the loose powder was done to remove any CO2 present in the mixture before pressing half of the powder into a dense pellet. By pressing the reaction mixtures into pellets, the reactant particles come into close contact with one another, thereby enhancing ion diffusion through the solid at higher temperatures. Covering each pellet with the remaining loose powder during heating acts as an extra measure to reduce zinc oxide volatility, thereby increasing the purity of the final products. X-ray diffraction will measure the intensity of X-rays scattered at different angles, which will provide a better understanding of the crystalline structure of each synthesized Sr2ZnW1-xMoxO6 compound to ensure no impurities are present.

28. PERCY LAVON JULIAN: TURNING BEANS INTO BREAKTHROUGHS

Author(s):

Naisbert Nyamatutu, Millikin University

Faculty Sponsor(s):

Dr. Paris Barnes

Abstract/Description:

Percy Lavon Julian (1899-1975) was an African American steroid Chemist from Montgomery Alabama in the early 20th century. He found ways to synthesize Physostigmine from the Calabar bean, used to treat glaucoma, and the steroid Progesterone from soybeans, used to avoid miscarriages as well as fight cancer. He also helped synthesize other chemicals on a large scale that are commonly used in medicine today such as Cortisone and Hydrocortisone. He overcame many challenges due to his race and economic status throughout his education and career. Julian received a subpar education from an all-Black school due to segregation, requiring him to take high school courses alongside his college workload, while working, all at the age of 17. After graduating as valedictorian with his B.A., he was denied graduate fellowships due to his race. In 1922 he was awarded Harvard's Austin Fellowship and received his master’s degree from Harvard but was denied admittance to their doctorate program because they were not ready to have a black graduate student instructing white students. Later, after getting his Ph.D. in Vienna, he was denied multiple job opportunities due to his race, and in 1951 his family home was attacked by arsonists. In 1954 he opened Julian Laboratories, eventually selling one of his plants for $2.2 million and finally receiving the recognition he had been denied all his life.

29. THE DEKEL-ZHAO DARK MATTER HALO PARAMETERS OF MILKY WAY DWARF SPHEROIDAL GALAXIES

Author(s):

Brian Eiter, Millikin University 

Matt Kordesh, Millikin University 

Ryan Mensik, Millikin University

Faculty Sponsor(s):

Dr. Casey Watson

Abstract/Description:

Based on surface brightness data, velocity dispersion data, Jeans analysis, and constraints from virial shape parameters, we determined the best-fit Dekel-Zhao (DZ) dark matter (DM) density profiles for 10 Milky Way dwarf spheroidal galaxies (dSphs). The DZDM model includes 1) a flexible, inner logarithmic slope parameter: 0 < g< 1, while 2) maintaining closed form integrals for, e.g., the DM mass, as with the Burkert (core: g = 0) and NFW (cusp: g = 1) profiles. We discuss the best-fit Burkert, NFW, and DZDM profiles for each dSph and show that there are strong correlations between the optical half-light radii, R_eff, of the dSphs and the scale radii and scale densities of their best-fit DM profiles. We additionally show that g is also correlated with R_eff for the best-fit DZDM profiles. Our work provides further evidence that astronomers can estimate a galaxy's DM properties by measuring R_eff.

30. HARVESTING THE PREVAILING WESTERLIES FOR CLEAN POWER

Author(s):

Declan Gleeson, Millikin University 

Nick Matthews, Millikin University 

Trace Shaub, Millikin University 

Avi Sheth, Millikin University

Nick Lynch, Sks Engineers 

Dr. Casey Watson, Millikin University

Faculty Sponsor(s):

Dr. Casey Watson

Abstract/Description:

We investigate the possibility of harvesting the "prevailing westerlies" (PWs), which average 10-25 mph in the mid-Northern latitudes (where half the world's population lives), to fulfill power needs, particularly in rural and developing regions. To establish proof of concept, we measured the power generated as a function of wind velocity as a small-scale turbine turned the axis of a 30-kW generator. We report on the ability of a scaled-up version of this turbine to utilize the PWs, amplified by the Aeolian wind focus and Venturi effects, to recharge EV batteries and potentially provide additional power.