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Full-Text Articles in Entire DC Network
Teaching Critically In Contentious Times Black Consciousness, Historical Knowledge, And Educational Policy, Lagarrett J. King, Daniella Cook Sumpter
Teaching Critically In Contentious Times Black Consciousness, Historical Knowledge, And Educational Policy, Lagarrett J. King, Daniella Cook Sumpter
Faculty Publications
Editors’ Introduction to Special Section of Critical Education: Teaching Critically in Contentious Times
Association Of Nucleoside Reverse Transcriptase Inhibitor Use With Reduced Risk Of Alzheimer's Disease Risk, Joseph Magagnoli Ph.D., Ms, Meenakshi Ambati, Tammy H. Cummings, Joseph Nguyen, Claire C. Thomas, Vidya L. Ambati, S. Scott Sutton, Bradley D. Gelfand, Jayakrishna Ambati
Association Of Nucleoside Reverse Transcriptase Inhibitor Use With Reduced Risk Of Alzheimer's Disease Risk, Joseph Magagnoli Ph.D., Ms, Meenakshi Ambati, Tammy H. Cummings, Joseph Nguyen, Claire C. Thomas, Vidya L. Ambati, S. Scott Sutton, Bradley D. Gelfand, Jayakrishna Ambati
Faculty Publications
INTRODUCTION
Inflammasome activation is implicated in Alzheimer's disease (AD). We previously demonstrated that nucleoside reverse transcriptase inhibitors (NRTIs), drugs approved to treat human immunodeficiency virus (HIV) and hepatitis B, also inhibit inflammasome activation.
METHODS
We evaluated the association between NRTI exposure and subsequent development of AD in the United States Veterans Health Administration over a 24-year period and in the MarketScan database over a 14-year period using propensity score-matched multivariate Cox hazards regression and Kaplan–Meier analyses.
RESULTS
We report that in humans, NRTI exposure was associated with a significantly lower incidence of AD in two of the largest health insurance …
Immigration Policy In The Second Trump Administration: Restriction, Removal, And The Limits Of Maga Nativism, Caroline R. Nagel
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 …
Immigration Policy In The Second Trump Administration: Restriction, Removal, And The Limits Of Maga Nativism, Caroline R. Nagel
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 …
A Slice Of Archives: Developing Focused Internships, Karen Glenn, Rebecca A. Wiederhold
A Slice Of Archives: Developing Focused Internships, Karen Glenn, Rebecca A. Wiederhold
Faculty Publications
In this presentation, Brigham Young University discussed how they have partnered with the campus history department to offer paid internships to students interested in exploring careers in archives. A module approach was developed, allowing students to select up to three projects, giving them experience with multiple types of history-related work done in libraries. We hope that long-term investment in this internship program will encourage students to explore careers in the archives field.
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
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. …
Investigating The Suitability Of Dichotomous Responses For The Water Insecurity Experiences (Wise) Scales Using Nationally Representative Data From 39 Countries, Indira Bose, Joshua D. Miller, Hilary J. Bethancourt, Olga P. García, Hugo R. Melgar-Quiñonez, Rosana Salles-Costa, Mauro E. Delgrossi, Scott M. Miller, Tessa L. Durham, Teresa Shamah-Levy, Pablo Gaitán-Rossi, Sera L. Young, Edward A. Frongillo Jr. Ph.D.
Investigating The Suitability Of Dichotomous Responses For The Water Insecurity Experiences (Wise) Scales Using Nationally Representative Data From 39 Countries, Indira Bose, Joshua D. Miller, Hilary J. Bethancourt, Olga P. García, Hugo R. Melgar-Quiñonez, Rosana Salles-Costa, Mauro E. Delgrossi, Scott M. Miller, Tessa L. Durham, Teresa Shamah-Levy, Pablo Gaitán-Rossi, Sera L. Young, Edward A. Frongillo Jr. Ph.D.
Faculty Publications
The Water Insecurity Experiences (WISE) Scales have been validated to comparably measure water insecurity globally. The scales consist of 12 items that can be administered in approximately 3 minutes. There is interest in developing more rapid versions of the tools for when time is limited. One alternative is to use a subset of 4 items, which has been validated, but has some drawbacks. Here we investigate another alternative: dichotomous (yes/no) response options instead of the original four levels of frequency-based (polytomous) responses. We used nationally representative data from 39 countries to simulate dichotomized responses by collapsing the four levels of …
Clarifying Parens Patriae, James G. Dwyer
Clarifying Parens Patriae, James G. Dwyer
Faculty Publications
Throughout the Anglo-American legal world, the state claims an authority, termed parens patriae, to exert control over the lives of nonautonomous persons in ways it does not presume to control autonomous persons. Philosophers have given little attention to when and how that authority should be exercised, yet there is disagreement or confusion about this among courts and legal scholars. This article examines how parens patriae differs from other government roles, identifies which conceptions of the parens patriae role are coherent, and then presents a normative case for adopting a conception of the role as that of fiduciary for nonautonomous …
New Hands In China: Frederick And Elizabeth Crook In Asia, Karen Glenn, John Murphy, Hallie Davidson
New Hands In China: Frederick And Elizabeth Crook In Asia, Karen Glenn, John Murphy, Hallie Davidson
Faculty Publications
Drawing from the Frederick W. Crook and Elizabeth F. Crook papers in the L. Tom Perry Special Collections, this exhibit features photographs, writings, and artifacts that document rural life, agricultural development, and cross-cultural exchange in China from the 1980s through the 2010s. It also highlights the humanitarian and religious contributions of Frederick W. Crook and his wife, Elizabeth Fletcher Crook, including their work with LDS Charities and their service as mission presidents in Taiwan from 1979 to 1980.
Frederick W. Crook was an agricultural economist who worked for the United States Department of Agriculture for over 30 years, specializing in …
“William Clark’S Treaties With Indian Nations: An Overview.”, Jay H. Buckley
“William Clark’S Treaties With Indian Nations: An Overview.”, Jay H. Buckley
Faculty Publications
Born the ninth of ten children to John and Ann (Rogers) Clark on August 1, 1770, on a plantation in Caroline County, Virginia, William Clark led a full life as a soldier, explorer, Indian agent, Missouri territorial governor, and superintendent of Indian affairs at St. Louis. While a teenager, his family relocated to a new plantation called “Mulberry Hill” near present-day Louisville, Kentucky. Clark joined the Kentucky militia, and then in 1792 President George Washington commissioned Clark a lieutenant of infantry. During General Anthony Wayne’s Ohio River Indian campaigns, Clark fought at the Battle of Fallen Timbers. He resigned his …
Graphics Processing Unit-Enabled Path Planning Based On Global Evolutionary Dynamic Programming And Local Genetic Algorithm Optimization, Junlin Ou, Ge Song, Yi Wang
Graphics Processing Unit-Enabled Path Planning Based On Global Evolutionary Dynamic Programming And Local Genetic Algorithm Optimization, Junlin Ou, Ge Song, Yi Wang
Faculty Publications
This paper presents a novel path planning method for real-time robotic path planning in a dynamic environment involving moving obstacles. It combines on a holistic platform a global approach to rapidly generate initial paths of prominent diversity and a heuristic approach to enable local path refinement for enhanced computational efficiency, exploration, and robustness. The global approach innovates a formulation that treats a path planning problem with a visibility graph as a Markov decision process and decomposes the process into many subproblems. A new evolutionary dynamic programming approach (EDP) is proposed to solve these subproblems in an iterative manner using …
The Imposition Of Constitutional Rights, Alvin Padilla-Babilonia
The Imposition Of Constitutional Rights, Alvin Padilla-Babilonia
Faculty Publications
One of the central principles of constitutionalism is that citizenship stands for equal rights under the law. According to this ideal, a U.S. citizen living in Puerto Rico or Guam should have the same constitutional rights as a citizen living on the mainland. However, throughout U.S. history, constitutional rights have been neither uniform nor centralized. While constitutional rights held im- portance, they coexisted with ideals of democratic self-governance and legal pluralism. Today, Supreme Court justices and legal scholars argue that all constitutional rights should apply in the territories. This view upholds citizenship, equal rights, and the rule of law. But …
Data Package Supporting Research On Personalized Learning Path Problem Derived From The Cognitive Theory Of Multimedia Learning, Sean A. Mochocki, Mark Reith
Data Package Supporting Research On Personalized Learning Path Problem Derived From The Cognitive Theory Of Multimedia Learning, Sean A. Mochocki, Mark Reith
Faculty Publications
Personalized Learning Paths (PLP)s are sequences of learning materials and activities that are designed to deliver personalized education to students. Unfortunately, PLPs are often defined and implemented based on faulty cognitive science practices. The PLP research community may benefit from a problem domain and data set that is derived from a scientifically supported cognitive science discipline. This data is published to support the paper, “A Two-Stage Multi-Objective Personalized Learning Path Problem Based on the Cognitive Theory of Multimedia Learning.” This data set includes the data used in this paper, the questionnaire used to gather learner profile data, and the python …
‘I Feel Like The Most Important Thing Is To Ensure That Women Feel Included…’: Immigrant Women’S Experiences Of Integration And Gender Equality In Iceland During Times Of Crisis, Marya Rozanova-Smith, Embla Eir Oddsdóttir, Andrey N. Petrov
‘I Feel Like The Most Important Thing Is To Ensure That Women Feel Included…’: Immigrant Women’S Experiences Of Integration And Gender Equality In Iceland During Times Of Crisis, Marya Rozanova-Smith, Embla Eir Oddsdóttir, Andrey N. Petrov
Faculty Publications
Enabling gender equality by empowering women to fully engage in modern society is fundamental for building resilient and sustainable communities. While Iceland is recognized as a global leader in gender equality, the experiences of various immigrant groups can differ considerably, especially during crises such as the COVID-19 pandemic and recovery. Given the rapid increase in the immigrant population in Iceland, it is crucial to gain a deeper understanding of the processes surrounding immigrant women’s integration strategies, with an emphasis on gender equality through the lens of intersectionality. The main objective of this qualitative study is to explore the gendered impacts …
Towards Human Modeling For Human-Robot Collaboration And Digital Twins In Industrial Environments: Research Status, Prospects, And Challenges, Guoyi Xia, Zied Gharairi, Thorsten Wuest, Karl Hribernik, Aaron Heuermann, Furui Liu, Hui Liu, Klaus-Dieter Thoben
Towards Human Modeling For Human-Robot Collaboration And Digital Twins In Industrial Environments: Research Status, Prospects, And Challenges, Guoyi Xia, Zied Gharairi, Thorsten Wuest, Karl Hribernik, Aaron Heuermann, Furui Liu, Hui Liu, Klaus-Dieter Thoben
Faculty Publications
Human-Robot Collaboration (HRC) and Digital Twins (DT) have significantly advanced industrial development and digital transformation. Human representations and models are essential in Industry 5.0, where human-centric is one of the key features. Despite the growing interest in human models for HRC and DT, a comprehensive overview of these models and enabling technologies currently needs to be provided. This paper aims to present the research status, prospects, applications, and challenges of human modeling for HRC and DT in industrial environments. This paper adopts a Systematic Literature Review (SLR) approach. Moreover, a framework is proposed to systematize human modeling aspects, the technologies …
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
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
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 …
Deportations And Latino Segregation: The Residential Impacts Of Interior Immigration Enforcement, Matthew Hall, Jacob S. Rugh, Hao Liang
Deportations And Latino Segregation: The Residential Impacts Of Interior Immigration Enforcement, Matthew Hall, Jacob S. Rugh, Hao Liang
Faculty Publications
The shift of immigration enforcement to local jurisdictions has intensified localized patterns of anti-immigrant sentiment, enabling the system of mass deportation to expand at an unprecedented scale. This study examines the effects of 287 (g) agreements, which empower local law enforcement to enforce immigration laws, on Latino residential segregation. Using a quasi-experimental design that compares counties implementing 287 (g) with those that applied but did not implement, we find that these policies significantly slowed declines in Hispanic-white segregation, particularly in early-adopting Southern counties where enforcement was most aggressive. We find no evidence that the program altered patterns of segregation for …
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.
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 …
Leader Development Goes Global: Gli Leadlab & The School Of Leadership, Erich Baumgartner, Ramiro A. Quero, Randy Siebold
Leader Development Goes Global: Gli Leadlab & The School Of Leadership, Erich Baumgartner, Ramiro A. Quero, Randy Siebold
Faculty Publications
No abstract provided.
Changes In The Incidence, Viral Coinfection Pattern And Outcomes Of Pneumococcal Hospitalizations During And After The Covid-19 Pandemic, King-Pui Florence Chan, Ting Fung Ma, Hanshu Fang, Wai-Kai Tsui, James Chung-Man Ho, Mary Sau-Man Ip, Pak-Leung Ho
Changes In The Incidence, Viral Coinfection Pattern And Outcomes Of Pneumococcal Hospitalizations During And After The Covid-19 Pandemic, King-Pui Florence Chan, Ting Fung Ma, Hanshu Fang, Wai-Kai Tsui, James Chung-Man Ho, Mary Sau-Man Ip, Pak-Leung Ho
Faculty Publications
Background
The incidence of pneumococcal pneumonia in the context of the Coronavirus Disease 2019 (COVID-19) pandemic, along with the real-world data on the ratio of non-invasive to invasive pneumococcal pneumonia, is an area that has not been thoroughly studied. The outcomes associated with coinfection of influenza and COVID-19 remain unknown. This study examined the incidence, demographics, coinfection with influenza and/or COVID-19, and clinical outcomes of pneumococcal hospitalizations in Hong Kong during the baseline, pandemic, and post-pandemic periods.
Methods
Hospitalization records of individuals aged 18 years and above with pneumococcal disease from January 2015 to August 2024 were extracted from the …
Small-Scale Production Of Bespoke Accelerated Aging Plutonium Alloy, K. S. Holliday, A. M. Parkes, Devin Rappleye, D. J. Roberts, K. J. Kondrat, S. A. Simpson, A. J. Swift, U. Mehta, R. M. Kissinger, D. L. Rosas, L. S. Ripplinger, E. R. Tardiff, S. L. Harris, S. Perkins, C. Hawkins, N. J. Gibbs, R. J. P. Driscoll, A. T. Sidambe, R. A. Cole, T. T. Roehling, J R. Jeffries
Small-Scale Production Of Bespoke Accelerated Aging Plutonium Alloy, K. S. Holliday, A. M. Parkes, Devin Rappleye, D. J. Roberts, K. J. Kondrat, S. A. Simpson, A. J. Swift, U. Mehta, R. M. Kissinger, D. L. Rosas, L. S. Ripplinger, E. R. Tardiff, S. L. Harris, S. Perkins, C. Hawkins, N. J. Gibbs, R. J. P. Driscoll, A. T. Sidambe, R. A. Cole, T. T. Roehling, J R. Jeffries
Faculty Publications
This study demonstrates the 100 g scale manufacture of a plutonium alloy that ages at an accelerated rate. The resulting alloy ages six times faster than typical weapons-grade plutonium due to the addition of 238Pu. As a major innovation, the process involved using a partial direct oxide reduction technique. This method was achieved by developing a new, complex geometry stirrer using additive manufacturing to reduce the 238Pu oxide and efficiently incorporate it into weapons-grade plutonium metal. The material was then purified by molten salt extraction and electrorefining before being alloyed with gallium. The alloy was then cold-rolled and …
Mechanism Of Property Enhancement Of Cu−Ti Alloys Via Microalloying With Cr And Mg Elements, Huan Wei, Hong Wei, Hua-Yun Du, Qian Wang, Cai-Zhi Zhou, Ying-Hui Weu, Li-Feng Hou
Mechanism Of Property Enhancement Of Cu−Ti Alloys Via Microalloying With Cr And Mg Elements, Huan Wei, Hong Wei, Hua-Yun Du, Qian Wang, Cai-Zhi Zhou, Ying-Hui Weu, Li-Feng Hou
Faculty Publications
The effect of adding Cr and Mg on the microstructure and properties of Cu−Ti alloys was examined. Cu−Ti−Cr−Mg alloys were fabricated using vacuum induction melting. The microstructure and phase composition of Cu−Ti−Cr−Mg alloys in different aging states were characterized. Additionally, the hardness and electrical conductivity of the materials were investigated. Results show that the precipitation pattern in Cu−Ti−Cr−Mg alloys resembled that of binary Cu−Ti alloys, with Cr and Ti forming the intermetallic compound of Cr2Ti during casting. The introduction of Cr and Mg increased the hardness of the alloy. Increasing the Mg content in the Cu−Ti−Cr−Mg alloy led to grain …
Scalable Cyber-Physical Testbed For Cybersecurity Evaluation Of Synchrophasors In Power Systems, Shuvangkar Chandra Das, Tuyen Vu, Hebert L. Ginn Iii
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 …
Sexually Transmitted Infection (Sti) Incidence And Risk Factors Among People With Hiv (Pwh): Insights From A 13-Year Cohort Study In South Carolina, Salome-Joelle Gass, Shujie Chen, Jiajia Zhang Ph.D., Bankole Olatosi
Sexually Transmitted Infection (Sti) Incidence And Risk Factors Among People With Hiv (Pwh): Insights From A 13-Year Cohort Study In South Carolina, Salome-Joelle Gass, Shujie Chen, Jiajia Zhang Ph.D., Bankole Olatosi
Faculty Publications
The Ending the HIV Epidemic (EHE) initiative aims to reduce new HIV infections by 90% by 2030 in the United States (US). However, rising sexually transmitted infection (STI) rates exacerbate the bidirectional infection risk between HIV and STIs. Most research on STIs among people with HIV (PWH) has focused on high-risk groups, resulting in limited data on broader populations. This study addresses that gap by examining the incidence and risk factors for gonorrhea, chlamydia, and syphilis in a statewide cohort of PWH in South Carolina. Data from South Carolina’s HIV and STI surveillance systems were linked, and all PWH aged …
Environmental Risk And Alpha-Gal Syndrome (Ags) In The Mid-Atlantic United States, Brandon D. Hollingsworth Ph.D., Margaret Wiener, Dana A. Giandimenico, Scott P. Commins, Ross M. Boyce
Environmental Risk And Alpha-Gal Syndrome (Ags) In The Mid-Atlantic United States, Brandon D. Hollingsworth Ph.D., Margaret Wiener, Dana A. Giandimenico, Scott P. Commins, Ross M. Boyce
Faculty Publications
Alpha-gal syndrome (AGS), commonly referred to as the tick bite red meat allergy, has been reported worldwide with the number of suspected cases in the United States increasing from 24 in 2009 to over 34,000 in 2019. Within the US, AGS is associated with the bite of two tick species, Amblyomma americanum and Ixodes scapularis, and has particularly high incidence rates in the mid-Atlantic region. Because AGS is associated with tick bites, the risk of developing AGS is affected by the environment individuals visit. Despite this, as well as the numerous studies associating the environment with Am. americanum, …
Porous Hierarchically Ordered Hydrogels Demonstrating Structurally Dependent Mechanical Properties, Elisabeth C. Lloyd, Sujata Dhakal, Shahrouz Amini, Rami Alhasan, Peter Fratzl, Douglas R. Tree, Svetlana Morozova, Robert J. Hickey
Porous Hierarchically Ordered Hydrogels Demonstrating Structurally Dependent Mechanical Properties, Elisabeth C. Lloyd, Sujata Dhakal, Shahrouz Amini, Rami Alhasan, Peter Fratzl, Douglas R. Tree, Svetlana Morozova, Robert J. Hickey
Faculty Publications
While hierarchical ordering is a distinctive feature of natural tissues and is directly responsible for their diverse and unique properties, efforts to synthesize biomaterials have primarily focused on using molecular-based approaches with little emphasis on multiscale structure. Here, we report a bottom-up self-assembly process to produce highly porous hydrogel fibers that resemble extracellular matrices both structurally and mechanically. Physically crosslinked nanostructured micelles form the walls of micrometer-sized water-rich pores with preferred orientation along the fiber direction. Low elastic moduli (< 1 kPa), high elasticity (extending by more than 12 times the initial length), non-linear elasticity (e.g., hyperelasticity), and completely reversible extension are derived from unevenly distributed strain between the micrometer-sized pores and the polymer chains, which is reminiscent of cellular solids. Control of the material microstructure and orientation over many orders of magnitude (e.g., nm–μm), while holding the nanostructure constant, reveals how the multiscale structure directly impacts mechanical properties.
Methods For Rotating Electrodes In High-Temperature Molten Salts, Ranon Fuller, Eloise Cluff, Edward Mercado, Carlos Mejia, Devin Rappleye
Methods For Rotating Electrodes In High-Temperature Molten Salts, Ranon Fuller, Eloise Cluff, Edward Mercado, Carlos Mejia, Devin Rappleye
Faculty Publications
In this paper, we describe and validate a custom apparatus for performing high-speed (250-3,500 rpm) rotating electrode and dilatometer density experiments in molten salts. The reported details can aid in decreasing the difficulty and increasing the quality of such experiments. We discuss the design challenges and the solutions identified. We investigate methods for accurately measuring the solution resistance using electrochemical impedance spectroscopy (EIS), calculating the working electrode area using cyclic voltammetry (CV), and measuring the mass transfer-limited current of rotating electrodes using a series of chronoamperometry (CA) pulses. We further demonstrate the efficacy of our methods in producing accurate results.
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
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 …
Crashing The Party: How Textualism And Legislative History Can Work Together, John Cannan
Crashing The Party: How Textualism And Legislative History Can Work Together, John Cannan
Faculty Publications
Textualists must moderate their distaste for legislative history and acknowledge the role of congressional sources in statutory interpretation—even those they themselves approve of. Doing so would enhance their statutory analyses. Decisions arising from 2016 litigation by hospitals against the U.S. Department of Health and Human Services, culminating in Azar v. Allina Health Servs., 139 S. Ct. 1804, 204 L. Ed. 2d 139 (2019), demonstrate how textualist inflexibility can undermine their own principles. For example, notable advocates of that interpretive school—then-Judge Brett Kavanaugh and Justice Neil Gorsuch—overlooked statutory text, which they so highly prize, in reaching their determinations. Textualists often describe …