Digital Commons Network^™

Mechanisim Of Plasmon-Driven Photochemical Reactions, Hamed Kookhaee

Chemistry and Chemical Biology ETDs

Understanding a photocatalytic reaction condition that selectively leads to a desired product on metal surfaces is a longstanding research problem in heterogeneous catalysis. Here, using plasmon enhanced N-demethylation of methylene blue (MB) as model reaction, we show that high degree of product selectivity can be achieved by switching the mechanism from charge transfer to adsorbate electronic excitation and vice versa using surface ligands. In the presence of cetyl trimethyl ammonium bromide (CTAB) surface ligand on gold nanoparticles, MB is selectively transformed to thionine at 633 nm excitation wavelength that overlaps with the electronic transition of the adsorbate. At resonant excitation …

3d Printing Of Earthen Materials: Toward The Carbon-Zero Construction, Shiva Bhusal

Civil Engineering ETDs

In recent years, digital manufacturing techniques in the architecture and construction industry have rapidly gained attention, especially with 3D printing, also called additive manufacturing. The use of cement has been common in modern construction and is now being explored for 3D printing. However, due to cement's contribution to approximately 7 percent of global carbon emissions and its high cost, research on sustainable and greener materials has gained attention. Previous studies on alternative construction have examined the mechanical and rheological properties of soil mixes, but not much attention has been given to printability evaluation, shrinkage, and cracking, which can affect the …

Additive Manufacturing Of Lightweight Concrete Mixtures, Kourosh Rashidi

Civil Engineering ETDs

Additive manufacturing, also known as 3D printing, is an innovative technique that is increasing its popularity in many industries including construction. 3D printing is related to the layer wised manufacturing or additive construction of any simple to intricate geometry from a digital file. The construction industry has a high potential for using 3D printing technology. However, one of the critical factors in the adaption of additive manufacturing in the construction industry is achieving a printable concrete mix design. This research aims to design printable mixes of lightweight concrete that could be effectively used in the 3D printing of walls or …

Reducing Agglomeration Of Lab-Synthesized And Functionalized Barium Titanate Nanoparticle Composites, Jessica N. Domrzalski

Nanoscience and Microsystems ETDs

Barium titanate (BTO) has been extensively studied for its promise in increasing device performance with its high dielectric constant. With the world moving toward miniaturization, research in nanotechnology is paving a road for the future of electronics, energy storage, and batteries. A challenge in understanding BTO’s potential lies in the particles’ tendency to agglomerate. Nanoparticles behave differently than their bulk counterparts, so understanding size effects is a crucial step in understanding BTO. In this work, BTO nanoparticles are synthesized via a hydrolysis reaction, then functionalized via a ligand exchange reaction to reduce agglomeration. BTO is added to epoxy composites at …

Antimicrobial Activity And Mechanism Of Amyloid Proteins And Synthetic Conjugated Polyelectrolytes, Fahimeh Maghsoodi

Nanoscience and Microsystems ETDs

Although the exact cause of Alzheimer’s disease (AD) is still unknown, it is widely considered that the accumulation of amyloid plaques composed of the amyloid-β (Aβ) peptide in the brain is linked to neurodegeneration. Co-localization of viral DNA with Aβ plaques, the association of brain infection and AD, and research indicating the protective effect of Aβ against bacteria and fungi in mice and human cells have led to the hypothesis that Aβ expression and deposition may be central to its function as an antimicrobial peptide (AMP). In my thesis research, we seek to elucidate how Aβ functions as an AMP …

Teachers Perceptions, Practices, And Needs Toward Inclusion In Physical Education, Adriana E. Lucero

Health, Exercise, and Sports Sciences ETDs

Central Tasks of Learning to Teach provided the theoretical framework for the first study involving one in-service elementary physical educator teaching integrated classes while reflecting on three major stages of the teacher’s career, (1) the preservice, (2) the induction, and (3) the continuing professional development periods. Data revealed the following four themes: (a) authentic field experiences in immersive environments; (b) practice teaching in integrated settings enhanced self-confidence; (c) comprehensive and in-depth knowledge of students; and (d) disposition toward support when teaching and professional work outside of the teaching space. The Situated Expectancy-Value Theory provided the theoretical underpinning to our second …

Analysis Of Ternary Chloride Salt Corrosion In High Nickel Alloys, Dimitri Madden, Gowtham Mohan

Mechanical Engineering ETDs

The United States Department of Energy seeks to improve the efficiency of concentrating solar power technologies by employing thermal energy storage with operating temperatures above 700°C. To meet these goals, the National Solar Thermal Test Facility at Sandia National Laboratories has considered the use of a ternary molten chloride salt for sensible heat storage systems. While favored for low cost, good heat transfer properties, and stability at high temperature, ternary chloride salt also exhibits high corrosive attack. Components of a chloride salt storage system would include piping, valves, tanks, pumps, receivers, and heat exchangers, which would be exposed to high …

The “Afro In Afrolatinidad”: Examining Afrolatinx Experiences Of Blackness Through And Afrolatin Critical Theory Of Race, Celine Maria Ayala Ph.D

Sociology ETDs

Scholars of Afrolatinidad across disciplines often use their work to highlight the diversity of the Latinx community (Cahuas, 2019). Those who highlight Blackness in Latinidad tend to do so by merging Chicanx, and other Latinx theories with theories of Blackness that are centered on African American experiences. Although important, these works only tell one side of a multivariant story. Using a critical, diasporic, intersectional theoretical approach, which I call an Afrolatin Critical Theory of Race (ACTR), along with 30 semi-structured in-depth interviews, I find that Afrolatinx folk navigate Blackness, educational attainment and language in ways that debunk the myth of …

The Gayborhood Was Never Here For Some Of Us! Health Consequences Of Racialized Exclusion Among U.S. Sexual Minorities Across The Lifecourse, Kasim Ortiz

Sociology ETDs

Sexual minorities exhibit elevated rates of cigarette smoking, although disparate patterns exist when examining racial/ethnic differences among sexual minorities in the United States. Evidence suggests examining differing neighborhood contexts may help illuminate drivers of tobacco-related outcomes among sexual minorities, especially with respect to racial/ethnic variations among this understudied population. Adapting a framework of whiteness and health, the current project examined the role of racial residential segregation and neighborhood disadvantage as neighborhood contexts significantly associated with cigarette smoking across the adult lifespan. Using data from the 2010 Social Justice Sexual Project, merged with U.S. Census data, I find that residing in …

Material Reliability For A Molten Chloride Salt System, Aaron A.H. Overacker

Nuclear Engineering ETDs

Energy efficiency and cost reduction can both be improved upon using overall higher temperatures for the working fluid. This interest is shared in both nuclear energy as well as concentrated solar power. To achieve higher temperatures would require industry to change working fluids. The United States Department of Energy set out a goal of operating concentrated solar to above 700℃. This would help reduce the cost by having more efficiency in the thermal energy storage, while not a concern for nuclear, these high temperatures can reduce the safety risk and pressure use with the implementation of molten salts. The National …

Socially Mediated Self-Presentation, Image-Construction, And Twitter: A Multimodal Analysis Of Vice Presidents Across A Continental Divide, Nana Kwame Osei Fordjour

Communication ETDs

Struck by the paucity of studies on vice presidential rhetoric, the omnipresence of social media, and its centrality in politics, I analyzed the tweets of the vice president of the US, Kamala Harris, and the vice president of Ghana, Dr. Bawumia, after their respective elections in 2020. Taking a multimodal rhetorical analysis guided by a theoretical self-presentational framework centered around gender, personalization, and authenticity. I contribute to the broader discourse of how politicians communicate on social media to construct their public image. Taking a cue from the rhetorical approaches used by the two vice presidents, I argue that vice-presidential communication …

The Lithium Economy: Bolivia's "New" Resource And Its Role In Revolutionary Politics, Zsofia J. Szoke

Anthropology ETDs

Through an ethnographic analysis of the lithium industry this dissertation recounts the complex way lithium industrialization has interacted with Bolivia’s democratic and cultural revolution, officially known as the proceso de cambio, and with localized social forms and structures, which the national-level revolution seeks to reconstitute. I will argue that it is important to examine the implications of lithium industrialization’s intersection with local experiences of revolutionary politics. The dissertation’s main contention is that the industrialization of lithium in Bolivia has been conceptualized as an insurgent tool of political change and social transformation by the Morales-Linera regime and as such it has …

“Great Excitement”: Violent Incorporations Of The American Southwest, Joseph Hall-Patton

History ETDs

This dissertation studies various incidents of violence throughout the Southwest from 1848-1919, often called “great excitement,” revealing a “Western Civil War of Incorporation.” US incorporation designated whether people would be included or excluded from the American body politic. Violence in the Southwest between the mid-nineteenth and early-twentieth centuries exposes deep change fueled by a relentless US drive to swallow and digest its people and resources, profiting handsomely in the process. Each chapter is a case study, culminating in a conclusion that ties them together to gain a greater understanding of American violence. They are the 1858 San Luis Obispo vigilantes, …

Bulk Hydrogen Isotopes In Ordinary Chondrites, Michael J. Cato

Earth and Planetary Sciences ETDs

Bulk hydrogen isotopes in nominally anhydrous meteorites are a key component in our understanding of the distribution of hydrogen in our solar system, including the provenance of water on the Earth. Here, we develop a step-heated continuous-flow method to measure the bulk hydrogen isotopes in nominally anhydrous rocks and use this method to significantly increase the dataset of bulk hydrogen isotopes in ordinary chondrites, nearly doubling the number of equilibrated members. We found that as thermal alteration increases from petrologic type 3.0 to 4, there is a correlated decrease in both hydrogen content and isotope ratio, followed by no significant …

Energy-Efficient Operation And Performance Optimization In Computing Systems, Nafis Irtija

Electrical and Computer Engineering ETDs

In the modern world, an expansive range of computing systems are being used, and in all of these systems, energy efficiency and performance optimization are of utmost significance. But performance optimization means different things for different computing systems. Because of their difference in nature, computing systems have different requirements for efficiency and optimization. Distributed systems such as smart-grid systems, edge-computing environments, and blockchain systems focus on the behavior of the agents. Thus, the application of network economics principles, such as Game Theory and Contract Theory, can improve the operation of these systems in a multitude of ways. On the other …

Long-Term Human Video Activity Quantification In Collaborative Learning Environments, Venkatesh Jatla

Electrical and Computer Engineering ETDs

Research on video activity detection has mainly focused on identifying well-defined human activities in short video segments, often requiring large-parameter systems and extensive training datasets. This dissertation introduces a low-parameter, modular system with rapid inference capabilities, capable of being trained on limited datasets without transfer learning from large-parameter systems. The system accurately detects specific activities and associates them with students in real-life classroom videos. Additionally, an interactive web-based application is developed to visualize human activity maps over long classroom videos.

Long-term video activity detection in classrooms presents challenges, such as multiple simultaneous activities, rapid transitions, long-term occlusions, duration exceeding 15 …

Reconnaissance: Relationship Between Social Presence And Knowledge Construction In Second Life, Leah A. Hardesty

Organization, Information and Learning Sciences ETDs

This qualitative research study explored levels of social presence in Second Life (virtual world) associated with phases of knowledge construction. The study explored images and data collected from users at two discussion-based activities. The findings revealed the three levels of social presence, according to the Interactional Process Model of Social Presence developed by Schultze and Brooks. Social presence established a sense of mutual monitoring of users that increased users’ sense of presence. This made their virtual interactions more real. Various phases of knowledge construction were observed as specified in the Interaction Analysis Model developed by Gunawardena, Lowe and Anderson. Knowledge …

Served Fresh Daily: Welcoming Students With An On-Site, Asynchronous Tour, Adrienne Warner

University Libraries & Learning Sciences Faculty and Staff Publications

This presentation, delivered at the LOEX 2023 conference, highlights the program impetus, design, and initial assessment, as well as a call to rediscover how in-person tours can be an essential part of an academic library instruction program. Academic library tours used to be a staple offering that acquainted users to spaces and services. Today, librarians provide many types of online orientations and virtual tours, but there is a need to help students feel welcome in our buildings. At the University of New Mexico, the First-Year Experience librarian created an in-person, asynchronous tour that students access with their smartphones. Pairing a …

Mental Distress Among Adults With Serious Mental Illness In A Criminal Legal Setting: A Secondary Data Analysis Of The Mcarthur Mental Health Court Study Data, Violette Cloud

Psychology ETDs

Chronic criminal legal system (CLS) involvement among individuals with serious mental illness (SMI) is of growing concern. Mental health courts (MHCs) are a known diversion strategy currently used by the CLS to address this problem. MHCs are seen as an effective method for linking individuals with SMI to needed treatment, removing them from a detention setting, and subsequently reducing recidivism. However, less is known about the impact of MHC enrollment on mental health related outcomes (mental distress). Using the McArthur Mental Health Court Study data, this study aimed to inspect the impact of MHC participation, legal coercion, and treatment motivation …

Synthesis, Characterization And Spectroscopic Studies Of Novel Donor-Acceptor Complexes, Shiyue Gao

Chemistry and Chemical Biology ETDs

Square-planar compounds of the (dichalcogenolene)Pt(diimine) series are possess unique photophysical properties that include long-lived excited state lifetimes, which result in their being potential candidates for numerous applications. These applications include solar energy conversion, photocatalysis, nonlinear optics, and photoluminescent probes of biological systems. The most interesting feature of the (dichalcogenolene)Pt(diimine) series of molecules is the bpydichalcogenolene ligand-to-ligand charge transfer (LL’CT) band. To better understand their photoluminescent decay mechanism, and understand their excited dark state properties, we have synthesized and characterized new compounds that include (Thp-bpy)Pt(CAT), (Thp2-bpy)Pt(CAT), (Thp-bpy)Pt(bdt), and (Thp2-bpy)Pt(bdt). Through interpretation of electronic absorption, resonance Raman, XAS, photoluminesce spectroscopy, in addition …

20230512_Pharmacy Student Uses Hslic’S 3d Printer For Prize-Winning Poster Project, Jonathan Seyfried

HSLIC Blog Post

No abstract provided.

From Peer Review To Peer Conference: Increasing Collaboration In Asynchronous And Synchronous Computer-Mediated Modes In A Technical And Professional Communication Class, Sofia Tarabrina

English Language and Literature ETDs

The purpose of this study was to investigate the influence of different modes of peer review on students' interactions through a mixed-methods case study. The researcher recruited six students and conducted three peer review sessions in the asynchronous anonymous, asynchronous identifiable, and synchronous mode. The data sources were student pre- and post-peer review drafts, peer review comments, and the researcher's observations of student interactions. The data analysis included transcribing, coding, enumeration, classification, ethnographic analysis, and comparison.

The data analysis showed that tension in peer review interactions that might have caused dissatisfaction in students could be reduced if students performed more …

20230511_May Is Mental Health Awareness Month, Alexis Ellsworth-Kopkowski

HSLIC Blog Post

No abstract provided.

Monitoring American Federalism: The Overlooked Tool Of Sounding The Alarm Interposition, Christian G. Fritz

Faculty Scholarship

One key feature of the U.S. Constitution – the concept of federalism – was unclear when it was introduced, and that lack of clarity threatened the Constitution’s ratification by those who feared the new government would undermine state sovereignty. Proponents of the new governmental framework were questioned about the underlying theory of the Constitution as well as how it would operate in practice, and their explanations produced intense and extended debate over how to monitor federalism.

http://50shadesoffederalism.com/case-studies/monitoring-american-federalism-the-overlooked-tool-of-sounding-the-alarm-interposition/#more-1574

Challenging The "Unexceptional": Marguerite Of Provence, Thirteenth-Century Queenship, And Power, Katie Despeaux

History ETDs

Marguerite of Provence, wife to Saint Louis IX of France, has long been overlooked or negatively characterized by historians. Due to the unique circumstances of her mother-in-law’s political reach and her sister’s role as queen of England, Marguerite was limited by her husband and his court in her access to power. Traditionally understood as a passive queen, Marguerite’s expression of power through motherhood, curated images, and emotional performance can be better understood through Theresa Earenfight’s paradigm of gender and power. In a series of comparisons between Marguerite and her mother-in-law, sister, and Egyptian counterpart during the Seventh Crusade, Marguerite’s role …

04-07-2023 Hsc Committee Minutes, Hsc Committee

HSC Committee (A subcommittee of the UNM Board of Regents)

No abstract provided.

20230509_Remarkable Rubrics, Jonathan Eldredge

HSLIC Blog Post

No abstract provided.

Research Priorities For Therapeutic Plasma Exchange In Critically Ill Patients, Sascha David, Lene Russell, Pedro Castro, Andry Van De Louw, Lara Zafrani, Tasneem Pirani, Nathan D. Nielsen, Eric Mariotte, Bruno L. Ferreyro, Jan T. Kielstein, Luca Montini, Anne C. Brignier, Matthias Kochanek, Joan Cid, Chiara Robba, Ignacio Martin-Loeches, Marlies Ostermann, Nicole P. Juffermans

Pathology Research and Scholarship

Therapeutic plasma exchange (TPE) is a therapeutic intervention that separates plasma from blood cells to remove pathological factors or to replenish deficient factors. The use of TPE is increasing over the last decades. However, despite a good theoretical rationale and biological plausibility for TPE as a therapy for numerous diseases or syndromes associated with critical illness, TPE in the intensive care unit (ICU) setting has not been studied extensively. A group of eighteen experts around the globe from different clinical backgrounds used a modified Delphi method to phrase key research questions related to "TPE in the critically ill patient". These …

Marie De France And The Wife Of Bisclavret: A New Understanding, Katie Despeaux

Foreign Languages & Literatures ETDs

Marie de France’s werewolf lai, Bisclavret, was met with immediate and long-lasting fascination, replication, and criticism. As part of what Caroline Walker Bynum calls “the werewolf renaissance,” the story breaks with traditional understandings of werewolves: Bisclavret is not the villain of the story but presents instead as a sympathetic character, victimized by his wife’s collaboration with another man who steals his clothes and prevents him from regaining his human form.

Modern scholarship generally falls within two opposite camps: those for whom the wife is disloyal to her husband; and those for whom Marie herself was disloyal to her gender. …

Theory, Simulation, And Experiments On A Magnetically Insulated Transmission Line Terminated By A Bremsstrahlung Diode, Troy Clay Powell

Electrical and Computer Engineering ETDs

Foundational concepts necessary for power flow analysis of a self-magnetically insulated transmission line (MITL) are introduced in theoretical form and several developments to the theory are described. These include cold-cathode electron emission physics, self-magnetic insulation physics, self-limited MITL current, and relativistic secondary ion production from anode surfaces. Modeling these physics is performed using EMPIRE, an electromagnetic particle-in-cell code.

Self-limited MITL current theory described numerically by Pointon is developed here in analytic form and is then used to drive simulations to compare to experiments that were performed in EMPIRE. Carefully calibrated current sensors from HERMES-III experiments show good agreement with EMPIRE …