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Immigration Policy In The Second Trump Administration: Restriction, Removal, And The Limits Of Maga Nativism, Caroline R. Nagel May 2025

Immigration Policy In The Second Trump Administration: Restriction, Removal, And The Limits Of Maga Nativism, Caroline R. Nagel

Faculty Publications

Donald Trump's three presidential campaigns have centred on promises to stop unauthorised immigration, whether by ‘building the wall’ or by enacting the largest mass deportation in American history. To deliver on these promises, Trump has appointed Stephen Miller—an anti-immigration hardliner who was responsible for the first Trump administration's draconian border policies – to a key White House position. Trump is often described as breaking from liberal-democratic norms; but when it comes to immigration policy, he is following a well-worn path by hiring Miller. This brief commentary places the Trump/Miller brand of anti-immigration politics in historical context, showing how anxieties over …


Whole-Genome Assembly And Annotation Of The Firecracker Penstemon (Penstemon Eatonii), David E. Jarvis, Mikel R. Stevens, Payton Carter, Ying Fei Lin, Kate E. Jaggi, Gabriela Jijon, Teal Kalt, Jouber Calixto, Samantha Standring, Kaitlin Torres, Kayla B. Stephensen, Hayley Mangelson, Noah H. Williams, Carolyn A. Wessinger, Peter J. Maughan, Paul B. Frandsen May 2025

Whole-Genome Assembly And Annotation Of The Firecracker Penstemon (Penstemon Eatonii), David E. Jarvis, Mikel R. Stevens, Payton Carter, Ying Fei Lin, Kate E. Jaggi, Gabriela Jijon, Teal Kalt, Jouber Calixto, Samantha Standring, Kaitlin Torres, Kayla B. Stephensen, Hayley Mangelson, Noah H. Williams, Carolyn A. Wessinger, Peter J. Maughan, Paul B. Frandsen

Faculty Publications

The penstemons are ornamental annual flowering plants native to the Intermountain West and Rocky Mountains and commonly used for urban landscaping. Elite commercial penstemons are generally susceptible to abiotic stresses, including drought, root rot, cold, and high salinity. Firecracker penstemon (Penstemon eatonii), however, is much more tolerant to these stresses than most elite cultivars. Importantly, firecracker penstemon has been reported to hybridize with many other penstemons and therefore provides the opportunity to develop more tolerant elite cultivars through strategic crossing. To facilitate the study and utilization of firecracker penstemon, we sequenced and annotated the genome of a P. …


Thematic Geo-Inquiry In Seventh Grade Geography, Rebekah Driscoll Austing Apr 2025

Thematic Geo-Inquiry In Seventh Grade Geography, Rebekah Driscoll Austing

Theses and Dissertations

With the growth of globalization, geography is an important subject for students of the 21st Century to understand. Being adept in geography will aid our future generations to be able to use geographic skills to answer complex world issues. Unfortunately, geography has been a long-neglected subject of social studies; often considered boring and not worthwhile with teachers using teacher-centered curriculum methods and memorization. A teacher’s job is to provide appropriate experiences, materials, and context for students to construct and connect knowledge that is useful and beneficial to them. Through a constructivist lens, inquiry-based thematic units can be used by …


To Post Or Not To Post, That Is The Discussion: An Exploration Of Students’ Perceptions And Experiences With Using Online Collaboration Tools In Threaded Discussion Board Postings, Sherietta Farron Lane Apr 2025

To Post Or Not To Post, That Is The Discussion: An Exploration Of Students’ Perceptions And Experiences With Using Online Collaboration Tools In Threaded Discussion Board Postings, Sherietta Farron Lane

Theses and Dissertations

The purpose of this mixed methods action research study was to explore how instructor presence, cognitive presence, and social presence impact students' perceptions and experiences when interacting, communicating, and collaborating in asynchronous discussions and collaborative activities during an introductory-level English literature course at a Southern career college. Online courses can create a sense of isolation due to a lack of student-to-student or student-to-instructor interaction. Discussion forums are a key communication tool to foster interaction in online courses. This action research focused on three questions: (1) How does the use of selected collaboration tools impact students’ perceptions of instructor presence in …


The Effects Of Implementing A Mindfulness Program In Two Elementary School Math Classrooms, Sara Lilley Apr 2025

The Effects Of Implementing A Mindfulness Program In Two Elementary School Math Classrooms, Sara Lilley

Theses and Dissertations

This action research study examined the effects of utilizing trauma-informed social-emotional learning (SEL) teaching practices in two elementary math classrooms located in a Title 1 public school in North Carolina. The classrooms consisted of one third-grade classroom with 18 students and one fifth-grade classroom with 22 students. These classrooms integrated 10 minutes of mindfulness practice which included direct instruction on calming strategies and breathing techniques. This study worked to help foster a learning environment that supported the academic and mental health needs of the student participants and looked at potential relationships between calming strategies and math assessment data. This study …


Bridging The Gap Between Science And Technology: A Descriptive Study Identifying Factors Influencing 6-8th Grade Science Teachers’ Implementation Of Virtual Laboratory Simulations, Coral Nicole Hoesli Apr 2025

Bridging The Gap Between Science And Technology: A Descriptive Study Identifying Factors Influencing 6-8th Grade Science Teachers’ Implementation Of Virtual Laboratory Simulations, Coral Nicole Hoesli

Theses and Dissertations

Teachers at a South Carolina middle school in the United States were not implementing virtual laboratory simulations at the same rate as other middle schools in the district. This descriptive research examined 6th-8th grade middle school science teacher perceptions and influencing factors behind the choice to implement virtual laboratory simulations. The study examined two research questions: (1) what are the personal and social factors influencing science teachers’ decisions to implement a virtual laboratory simulation, and (2) what are the structural factors influencing science teachers’ decisions to implement a virtual laboratory simulation?

The National Educational Technology Plan (NETP) and the International …


Dust And Metals In Distant Galaxies, Fatima Elkhatib Apr 2025

Dust And Metals In Distant Galaxies, Fatima Elkhatib

Theses and Dissertations

Interstellar dust causes reddening and dimming of light from background objects. To analyze how different the dust in distant galaxies is compared to dust in nearby galaxies, we look at multiple background quasars and try to fit their spectra with various models for known galaxies that have differing dust grain populations combined with a quasar spectrum template. Through fitting these models, we found that dust in most of the foreground galaxies we analyzed is similar to the SMC bar, a relatively thin area selected from the Small Magellanic Cloud (SMC). However, we note that all the objects we studied did …


Thermodynamic Study Of Ligand Coordination On Lead Halide Perovskite Quantum Dots, Bishal Adhikari Apr 2025

Thermodynamic Study Of Ligand Coordination On Lead Halide Perovskite Quantum Dots, Bishal Adhikari

Theses and Dissertations

Inorganic lead halide perovskite (ILHP) has been extensively studied in thin films and bulk crystals as promising materials for their photovoltaic and optoelectronic properties. These are stable enough to be prepared as colloidal quantum dots that can be dispersed, deposited and used to achieve quantum confinement; however, selection of the suitable surface passivating ligand remains challenge for long term stability of the colloidal quantum dots. Several ligand coordination chemistries used to achieve greater stability or specific functions: these can be installed at time of synthesis in some cases they can also be installed to preexisting quantum dots by ligand exchange …


Young Children’S Reading Experiences In An Online Family Book Club Centered On Multimodal Responses, Ling Hao Apr 2025

Young Children’S Reading Experiences In An Online Family Book Club Centered On Multimodal Responses, Ling Hao

Theses and Dissertations

This ethnographic case study explored Chinese American children’s heritage language and culture learning and their multimodal responses to culturally relevant picture books. I focus on six Chinese American families who participated in an online family book club. The children were between four and six years old. In each session, I first introduced Chinese characters or cultural traditions related to the book, and then had an interactive read aloud of a culturally relevant picture book. The children discussed the book with one parent and came up with a question and a connection. The children then responded to the book through creating …


Assessing Relationships Between Water Quality, Precipitation, Land Cover And Stormwater Conveyance Type Across A Range Of Sub-Watersheds In The Southeastern Coastal Zone, Kevencia Sabine Gabriel Faton Apr 2025

Assessing Relationships Between Water Quality, Precipitation, Land Cover And Stormwater Conveyance Type Across A Range Of Sub-Watersheds In The Southeastern Coastal Zone, Kevencia Sabine Gabriel Faton

Theses and Dissertations

The expansion of urban land use/cover along the coast may degrade water quality by introducing a plethora of pollutants and pathogens that negatively impact human and ecological health. It is hypothesized that anthropogenic contaminants associated with stormwater runoff increase with increasing urban density and vary with the timing and magnitude of rainfall. In this study, we examined land use/cover change and relationships between Escherichia coli (E. coli), turbidity, nutrients, and the timing and magnitude of rainfall in two different types of stormwater conveyances (ditches and ponds) within Murrells Inlet, SC during the summer of 2023. Our results indicate …


Keep Your Head Up: An Examination Of Out-Of-School Literacy Practices In An Intergenerational Family System, Johnnie D. Bryant-Johnson Apr 2025

Keep Your Head Up: An Examination Of Out-Of-School Literacy Practices In An Intergenerational Family System, Johnnie D. Bryant-Johnson

Theses and Dissertations

The asset-based qualitative study used a phenomenological approach within a Community Cultural Wealth framework to question the practices of an intergenerational family system in the Southeastern United States. The study investigated the family system’s out-of-school literacy practices and the exposure to culturally relevant literature. The study revealed that an elder who actively participated in rearing school-aged children intentionally introduced culturally relevant literature. Similarly, the study revealed that the primary caregivers did engage their school-aged children in conversations related to social justice and introduced them to culturally relevant texts. However, a child's inquiry into the topic initiated primary caregivers’ introduction to …


The Effects Of Implementing A Project Based Learning Framework Into A 5th Grade Science Unit On Force And Motion In A Population Of Disadvantaged Students, Kristy Martin Apr 2025

The Effects Of Implementing A Project Based Learning Framework Into A 5th Grade Science Unit On Force And Motion In A Population Of Disadvantaged Students, Kristy Martin

Theses and Dissertations

Providing quality education that meets the needs of diverse populations and economically disadvantaged students is imperative in today’s educational environments. This research study investigates the effects of implementing a project-based learning (PBL) teaching approach as part of a fifth-grade science unit on force and motion. The implications on engagement, motivation, and student achievement on standardized tests were analyzed through a mixed-methods research approach. This study is grounded in the theoretical approaches of Constructivism and Social Interdependence Theory. Both concepts support PBL and explain the positive impacts noted by the research. The participants included 56 fifth-grade students, that were primarily African …


Cultivating Cultural Competence To Inspire Social Responsibility In Middle School Students, Jamie Shapiro Blau Apr 2025

Cultivating Cultural Competence To Inspire Social Responsibility In Middle School Students, Jamie Shapiro Blau

Theses and Dissertations

In World Language education, teachers pair linguistic and cultural instruction to prepare students to engage effectively with speakers of the target language. In my French classes, where most students enjoyed dominant racial and socioeconomic identities, I noticed limited cultural competency skills in students, as well as a lack of readiness to engage with diverse cultures. This was unsurprising, as pervasive White eurocentrism permeates American schools, covertly impacting students' social and curricular experiences. Specifically, curricula of World Language courses where the language of study originates in a country with colonial history, such as French, cloud and ignore the linguistic and cultural …


Understanding The Instructional Decisions Of Middle-School Mathematics Teachers: Three Case Studies, Alissa Lockwood Apr 2025

Understanding The Instructional Decisions Of Middle-School Mathematics Teachers: Three Case Studies, Alissa Lockwood

Theses and Dissertations

This action research study aimed to explore how middle-school mathematics teachers make instructional decisions in the absence of a required curriculum. While the school site has an adopted textbook, many of the mathematics teachers view this resource as invaluable. Better understanding the decision-making process of mathematics teachers at the school site can provide critical information to better support the teachers. The research question that guided this action research was: How does it seem that middle-school mathematics teachers make instructional decisions? This sequential two-phase qualitative study examined decision-making from a 6th, 7th, and 8th grade mathematics …


Who Am I As A Learner? The Effects Of A Self-Regulated Learning Intervention On Ninth Graders’ Academic Self-Concepts And Intrinsic Motivation, Kaitlyn Elizabeth Bailey Apr 2025

Who Am I As A Learner? The Effects Of A Self-Regulated Learning Intervention On Ninth Graders’ Academic Self-Concepts And Intrinsic Motivation, Kaitlyn Elizabeth Bailey

Theses and Dissertations

The transition from middle school to high school is a notoriously difficult one, and a student’s success in ninth grade is typically a predictor of future success in high school. Unfortunately, many ninth graders struggle to engage in school. Despite their capability to complete the work, these students appear unmotivated and simply disengaged from school. In this action research case study, three students had the opportunity to share their education stories and the experiences that have shaped their academic self-concepts. These students also participated in a self-regulated learning intervention to determine if students’ feelings of autonomy, competence, and relatedness could …


Out Of The Ashes: One Teacher's Journey Implementing A Blended Learning Intervention Integrating The Flipped Classroom Model And Student-Selected Independent Reading, Michael John Hockwater Apr 2025

Out Of The Ashes: One Teacher's Journey Implementing A Blended Learning Intervention Integrating The Flipped Classroom Model And Student-Selected Independent Reading, Michael John Hockwater

Theses and Dissertations

Sixth-grade Academic Intervention Services (AIS) students at Wyndemere Middle School (WMS) in Western New York demonstrated a lack of engagement in AIS English Language Arts (ELA) class. In hopes of increasing their engagement, the teacher-researcher implemented a blended learning intervention that incorporated aspects of the flipped classroom model and student-selected texts. The results of this action research qualitative case study were promising, with many student participants expressing an increased sense of engagement and enjoyment of AIS ELA class.


Building A Framework For Analyzing Non-Linear And Multidimensional Kinetics, Mainak Dhar Apr 2025

Building A Framework For Analyzing Non-Linear And Multidimensional Kinetics, Mainak Dhar

Theses and Dissertations

Many materials exhibit multiple rates of molecular relaxation due to structural complexities. Standard linear and one-dimensional kinetic cannot extract all the necessary dynamic information about these systems. This dissertation contributes to an overarching scheme to develop new non-linear and multidimensional kinetic experiments to obtain this information. The studies span computation and experiments, picosecond to second timescales, and both single-molecule and pulsed-laser kinetics

Single-molecule kinetics experiments yield time series that contain information about unique structural and dynamic properties of materials. However, these time series are noisy, and data analysis is challenging. Parametric methods are computationally intensive and require strong, unverifiable assumptions …


Generalized Sierpiński Numbers And New Irreducibility Criteria On Legendre Polynomials, Robert Scottfield Groth Apr 2025

Generalized Sierpiński Numbers And New Irreducibility Criteria On Legendre Polynomials, Robert Scottfield Groth

Theses and Dissertations

A Sierpiński number is an odd positive integer k such that k·2n +1 is composite for all n ∈ Z+. Similarly, a Riesel number is an odd positive integer k such that k · 2n − 1 is composite for all n ∈ Z+, and a Brier number is a number that is both Sierpiński and Riesel. In this dissertation, we consider a generalization of a Sierpiński number and establish their existence by showing, for every fixed A ≥ 2, there are infinitely many odd positive integers k such that the k · an + 1 is composite for every …


The Impact Of Equity Literacy In Understanding, Creating, And Sustaining An Equitable School Climate, Kristen M. Ewing Apr 2025

The Impact Of Equity Literacy In Understanding, Creating, And Sustaining An Equitable School Climate, Kristen M. Ewing

Theses and Dissertations

There is an extraordinary culturally and linguistically diverse student population in America today; however, there is an overwhelmingly homogenous representation in educators, being predominantly White, middle-class, female, and monolingual (Howard, 2020; Tanase, 2020). The racial disparity between educators and students has serious consequences for marginalized students leaving many students undereducated and unprepared to compete in the world today (Howard, 2020). hooks (1994) claimed that educators are poorly prepared to confront diversity and we must focus on diversity and inclusion if we want to be more equitable and close the achievement gap. This qualitative action research study was centered around the …


Merit, Equity And Intersectionality: Autoethnographic Examination Of Perceived Race And Gender-Based Discrimination In The Workplace, Shavanna Henry Apr 2025

Merit, Equity And Intersectionality: Autoethnographic Examination Of Perceived Race And Gender-Based Discrimination In The Workplace, Shavanna Henry

Theses and Dissertations

This autoethnographic action research dissertation uses intersectionality, critical race theory, and racial battle fatigue theoretical lenses to examine my mental health as I experienced perceived race-based and gender-based discrimination at a public high school on the West Coast of the United States. The goal was to examine how my mental health was impacted during the development and attempted implementation of a DEI plan, and how my mental health was affected by the intersectionality of race and gender. I used journal entries and digital artifacts to craft seven vignettes that captured my experience. The findings from coding and analyzing data showed …


Investigating The Use Of Socio-Scientific Issues As Phenomena Through A Storyline Framework In A High School Biology Course, Dana Marie Delpha Apr 2025

Investigating The Use Of Socio-Scientific Issues As Phenomena Through A Storyline Framework In A High School Biology Course, Dana Marie Delpha

Theses and Dissertations

This action research dissertation investigates the efficacy of a socio-scientific phenomena-driven biology curriculum in a Title 1 Massachusetts High School. Grounded in social constructivism, culturally relevant pedagogy, and self-determination theories, the study explores the impact of socio-scientific phenomena on students’ perceived importance of science education, motivation, engagement, and achievement. A mixed-methods approach was used, and data was collected through student engagement reflection, Science Motivation Questionnaire, and pre- and post-assessments to holistically evaluate the efficacy of the curriculum. The findings include increased student engagement, motivation, and achievement after participating in the intervention, which supports the motivation-engagement-achievement feedback loop. Student agency was …


The Influence Of Instruction On Underrepresented Stem Leaders On Elementary Students’ Stem Identity And Perceptions Of Stem, Megan Elizabeth Willson Apr 2025

The Influence Of Instruction On Underrepresented Stem Leaders On Elementary Students’ Stem Identity And Perceptions Of Stem, Megan Elizabeth Willson

Theses and Dissertations

This action research study explored the influence of exposure to underrepresented STEM leaders on third-grade students’ STEM identity and their interest in STEM careers. Using an integrative STEM approach and guided by both Constructivist Learning Theory and Social Cognitive Career Theory, this convergent mixed methods study consisted of an eight-week intervention with lessons based on different STEM leaders and related activities each week. This eight-week period collected data through weekly researcher field notes, exit tickets and was prefaced and followed by a pre- and post-survey and pre- and post-interviews. Findings from the quantitative data, the Role Identity Survey in STEM …


The Impact Of Microlearning Professional Development On Educator Social And Emotional Competencies And Beliefs About Middle School Students’ Social And Emotional Learning, Kelly M. Abbott Apr 2025

The Impact Of Microlearning Professional Development On Educator Social And Emotional Competencies And Beliefs About Middle School Students’ Social And Emotional Learning, Kelly M. Abbott

Theses and Dissertations

The COVID-19 pandemic disrupted educational experiences for students with extended school closures and social distancing during the 2020-2021 school year and beyond. School closures, social isolation, and societal issues impacted students and caused mental health challenges as well as behavioral issues in the classroom. This study explored the impact of educator social and emotional competencies (SEC) on social and emotional learning (SEL) in the classroom. Previous research on SEL has found benefits to student’s relationship skills, emotional regulation abilities, and increases in academic achievement. This action research study used a mixed method design to gather data from surveys, interviews, classroom …


How Exposure To Professional Development Affects Teachers’ Use Of Tier One Behavior Interventions, Taurean Jarquise Robinson Apr 2025

How Exposure To Professional Development Affects Teachers’ Use Of Tier One Behavior Interventions, Taurean Jarquise Robinson

Theses and Dissertations

Research suggests that ongoing professional development is most beneficial for teachers. However, many schools cannot provide the time teachers need to participate in the frequent meetings, discussions, and reflections needed to cause professional growth. Student behavior continues to be an area in which teachers need support. Many teachers report that student behavior is one reason they often become unhappy with their jobs and leave their education career altogether. The qualitative action research study used strategies aligned with Culturally Relevant Pedagogy to offer six teachers professional development in Tier 1 behavior interventions. The data gathered measured how much Tier 1 behavior …


Gateways To Reading: Action Research With At-Risk Students At An Alternative School, David Sean Goff Apr 2025

Gateways To Reading: Action Research With At-Risk Students At An Alternative School, David Sean Goff

Theses and Dissertations

There is no shortage of research on how low levels of literacy disproportionately affect students of color, but this research was interested in how three theoretical models may impact this trend. The purpose of this qualitative case study was to examine the reading experiences and engagement levels of students in an alternative school English class, applying culturally relevant pedagogy (CRP), self-determination theory (SPD), and zone of proximal development (ZPD). CRP is a theoretical model that upholds students’ cultural identities, while pursuing academic success. ZPD is a theoretical model that suggests learning occurs when content is within students’ ability. SDT is …


Academic And Cerebrovascular Outcomes After Neurodevelopmental Screening In Sickle Cell Disease: A Longitudinal Cohort Study, Sarah E. Bills, Jeffrey Schatz, Elizabeth Gillooly, Julia D. Johnston, A. Lauren Waters, Alyssa M. Schlenz Apr 2025

Academic And Cerebrovascular Outcomes After Neurodevelopmental Screening In Sickle Cell Disease: A Longitudinal Cohort Study, Sarah E. Bills, Jeffrey Schatz, Elizabeth Gillooly, Julia D. Johnston, A. Lauren Waters, Alyssa M. Schlenz

Faculty Publications

Aim

To assess the predictive validity of neurodevelopmental screening in toddlers and preschool children with sickle cell disease (SCD) using the Ages and Stages Questionnaire (ASQ). We expected screening in preschool children to predict academic problems in elementary school and future stroke risk.

Method

Using a longitudinal cohort design, academic problems (e.g. grade retention, failing a subject) and increases in stroke risk (e.g. abnormal transcranial Doppler exam) were assessed for a 6-year period after neurodevelopmental screening in 2-year-olds (‘toddlers’) and 4-year-olds (‘preschool children’) using medical record review, which included annual information from parents about school functioning. Biopsychosocial variables were examined …


Trump And The Us Energy Transition, Conor M. Harrison Apr 2025

Trump And The Us Energy Transition, Conor M. Harrison

Faculty Publications

The US electricity grid has seen a rapid increase in the amount of renewable energy over the last decade, with many renewable advocates viewing the Inflation Reduction Act of 2022 as the catalyst to move the grid towards 100% clean energy. The 2024 elections, however, have significantly muddied the path. In this commentary, I posit what the Trump administration—and related Republican control of both houses of the US Congress—means for the US electricity system. I begin by briefly outlining the contours of federal and state electricity governance, the design of Inflation Reduction Act, the existing drivers of renewable energy growth …


Enhancing Self-Efficacy For Engagement With Diversity, Equity, And Inclusion Initiatives: Evaluation Of A Seven-Day Immersive Pilot Program In A College Of Education, Health, And Human Sciences, Jennifer M. Jabson Tree, Stefanie Benjamin, Dorian L. Mccoy Ph.D. Apr 2025

Enhancing Self-Efficacy For Engagement With Diversity, Equity, And Inclusion Initiatives: Evaluation Of A Seven-Day Immersive Pilot Program In A College Of Education, Health, And Human Sciences, Jennifer M. Jabson Tree, Stefanie Benjamin, Dorian L. Mccoy Ph.D.

Faculty Publications

Colleges of health, human sciences, and education are often administratively organized to include a diverse array of human sciences departments that share roots in social justice and a commitment to advancing equity and inclusion. Despite espoused commitments to equity and inclusion, they frequently struggle to achieve the changes necessary for advancing equity, and inclusion principles across policies, practices, procedures, and units. We implemented and evaluated a 7-day, total immersion, 56-h, educational program entitled the “Social Justice Institute” (SJI) for two cohorts of faculty, staff, and administrators to develop self-efficacy to intervene in systemic oppression in their academic units. SJI delivered …


Scalable Cyber-Physical Testbed For Cybersecurity Evaluation Of Synchrophasors In Power Systems, Shuvangkar Chandra Das, Tuyen Vu, Hebert L. Ginn Iii Apr 2025

Scalable Cyber-Physical Testbed For Cybersecurity Evaluation Of Synchrophasors In Power Systems, Shuvangkar Chandra Das, Tuyen Vu, Hebert L. Ginn Iii

Faculty Publications

This paper presents a synchrophasor-based real-time cyber-physical power system testbed with a novel security evaluation tool, pySynphasor, that can emulate different real attack scenarios on the phasor measurement unit (PMU). The testbed focuses on real-time cyber-security emulation using different components, including a real-time digital simulator, virtual machines (VM), a communication network emulator, and a packet manipulation tool. The script-based VM deployment and software-defined network emulation facilitate a highly scalable cyber-physical testbed, which enables emulations of a real power system under different attack scenarios such as address resolution protocol (ARP) poisoning attack, man-in-the-middle (MITM) attack, false data injection attack (FDIA), and …


Effect Of Precursors On Trimetallic Ruthenium-Based Catalysts Supported On Γ‑Al2O3 Pellets For Low-Temperature Ammonia Decomposition, Christopher J. Koch, Jennifer Naglic, Logan Kearney, Daniel Clairmonte, Binod Rai, Jochen A. Lauterbach, Lucas M. Angelette, Tyler Guin Apr 2025

Effect Of Precursors On Trimetallic Ruthenium-Based Catalysts Supported On Γ‑Al2O3 Pellets For Low-Temperature Ammonia Decomposition, Christopher J. Koch, Jennifer Naglic, Logan Kearney, Daniel Clairmonte, Binod Rai, Jochen A. Lauterbach, Lucas M. Angelette, Tyler Guin

Faculty Publications

Ammonia is a promising candidate as a liquid hydrogen energy storage medium, but it requires catalytic decomposition (ammonia cracking) to regenerate hydrogen. Recently developed trimetallic ruthenium−potassium-promoter (RuKM) ammonia decomposition catalysts have exceptionally low ammonia decomposition temperatures, able to perform the decomposition as low as 250 °C, which is significantly lower than other known catalysts that require temperatures above 500 °C. However, the effects of the RuKM precursor on the catalytic activity have not been investigated. We report the observed differences of 3% ruthenium/12% potassium/1% yttrium (RuKY) catalysts on γ-alumina synthesized from chloride-, nitrate-, and acetate-based precursors. Catalysts synthesized from chloride-based …