Digital Commons Network^™

A Roadmap For Exploring The Thematic Content Of Ecology Journals, Jonathan Knott, Elizabeth Larue, Samuel Ward, Emily Mccallen, Kimberly Ordonez, Franklin Wagner, Insu Jo, Jessica Elliott, Songlin Fei

Purdue University Libraries Open Access Publishing Fund

Ecologists—especially those new to the field—are tasked with finding relevant literature matching their research interests and deciding upon a suitable venue for the publication of their work. To provide a roadmap for early career researchers to identify journals aligned with their interests, we analyzed major research themes found across the top 30 ecology journals and three high-impact multi-disciplinary journals (Nature, PNAS, and Science), utilizing an automated content analysis (ACA) of 84,841 article abstracts, titles, and author keywords published over the last four decades. Journals clustered into 10 distinct groups based on 46 research themes identified by ACA. We examined the …

Purification Of Biomass Hydrolyzates For The Promotion Of Xylose Diester Formation, Laura Fernandez

Electronic Theses and Dissertations

The application of a novel xylose isolation procedure using phenyl boronic acid esterification has been limited to the hydrolyzates of low extractive biomasses like hardwoods and agricultural resides. Hydrolyzates with lower sugar and higher extractive concentrations, like softwoods, have not yielded xylose, or even xylose diester (XDE), the first intermediate product in the new process, under the same conditions. This research applied evaporation concentration, adsorbent separation and membrane filtration to these lower performing biomass hydrolyzates to maximize the yield of the XDE formation step of the new xylose extraction process. Lab-scale tests of these techniques were applied to pine hydrolyzate …

Fluid Flow Analysis Of Diluted Evaporating American Whiskey Droplets., Martin J. Brown Vi

Electronic Theses and Dissertations

The recent discovery of the unique structures, whiskey webs, formed when the evaporation of diluted American whiskey, has raised many questions as to the nature of the structures. Their formation process follows as such: (1) dilution of the whiskey to form nanoaggregates, (2) formation of a monolayer at the air-liquid interface, (3) chaotic ethanol evaporation caused monolayer collapse (via dynamic pressure), (4) bulk fluid evaporation caused monolayer collapse (via reduction of surface area), where the web-like structures reside on the surface, and finally, (5) web-like structures deposit on the substrate. The webs imaged via SEM had a striking resemblance to …

Development Of A Rapid Diagnostic Assay For The Colorimetric Detection Of Legionella Bacteria Using Loop Mediated Isothermal Amplification, Tess Peacock

All NMU Master's Theses

Legionella are aquatic bacteria capable of inhabiting man-made water systems. Inhaling water droplets carrying Legionella can cause Legionnaires’ disease, a rapidly progressing pneumonia. From 2000-2016 the number of Legionnaires’ cases increased 5-fold. Detecting Legionella in water systems can be challenging. Legionella have complex growth requirements, requiring expensive specialized media to grow. It can take 10 days to grow Legionella colonies on agar plates. There are few rapid assays available that can identify multiple Legionella species. This project aims to develop a Loop Mediated Isothermal Amplification (LAMP) assay that can detect multiple species of Legionella in less than one hour. LAMP …

Assessment Of Sex Differences And Amphetamine On Schedule-Induced Polydipsia, Min Park

All NMU Master's Theses

Amphetamine (AMPH) is one of the most common psychotropic drugs abused in the United States. Its major pharmacological effect is to increase synaptic dopamine levels in the mesolimbic reward pathway, which in turn causes behavioral effects in animals, and subjective effects in humans. These reinforcing properties of AMPH trigger very strong levels of craving the drug, and eventually result in patterns of compulsive use of AMPH. Regarding psychostimulant action, female rats have been reported to be more vulnerable to the reinforcing effects of psychostimulants. In the current study, schedule-induced polydipsia (SIP), an animal model of compulsive behavior, was applied for …

Inhibition Of L. Monocytogenes Biofilm Formation By The Amidase Domain Of The Phage Vb_Lmos_293 Endolysin, Vincenzo Pennone, Marta Sanz-Gaitero, Paula O’Connor, Aidan Coffey, Kieran Jordan, Mark J. Van Raaij, Olivia Mcauliffe

Department of Biological Sciences Publications

© 2019 by the authors. Licensee MDPI, Basel, Switzerland. Listeria monocytogenes is a ubiquitous Gram-positive bacterium that is a major concern for food business operators because of its pathogenicity and ability to form biofilms in food production environments. Bacteriophages (phages) have been evaluated as biocontrol agents for L. monocytogenes in a number of studies and, indeed, certain phages have been approved for use as anti-listerial agents in food processing environments (ListShield and PhageGuard Listex). Endolysins are proteins produced by phages in the host cell. They cleave the peptidoglycan cell wall, thus allowing release of progeny phage into the environment. In …

Microstructural Effects On Photocatalytic Performance In Ag3po4/Bi2moo6 Z-Scheme Photocatalyst Systems, Kaleab Mengesha Ayalew

UNLV Theses, Dissertations, Professional Papers, and Capstones

As the world population continues to grow and access to modern industry become increasingly common, humanity finds itself amid an environmental and energy crisis. Natural resources, such as clean water are getting scarce. Currently, the development of high efficiency, green energy sources, and eco-friendly methods for water treatment have become a nonelective task. As a result, photocatalysis, as one of the most promising technologies in utilizing solar energy and pollutant removal, has attracted considerable attention.

However, the practical application of photocatalysis is still elusive because of the difficulty of finding an individual material that can satisfy all the requirements for …

An Analysis Of Teacher Training Concerning The Identification Of Students With Autism Spectrum Disorder, Brittany Jo Desnoyer

UNLV Theses, Dissertations, Professional Papers, and Capstones

Given recent revisions to the diagnostic criteria as it pertains to students with ASD (DSM-V; APA, 2013), several studies have raised concern that future diagnosis will be limited (McPartland et al., 2012). However, prevalence rates of Autism Spectrum Disorders (ASD) have continued to rise since its release (Baio et al., 2018). Because special education referrals are subject to bias, and positively correlated with a high probably of subsequent diagnosis (Ysseldyke & Algozzine, 1981), the role of the educator warrants exploration.

This study investigated the level of training provided to pre-service and in-service general and special educators in the DSM-IV (APA, …

The Effects Of Problems Attributed To Culture On The Mental Health Of Athletes, Corey Rae Kuhn

UNLV Theses, Dissertations, Professional Papers, and Capstones

Demographic changes in the United States during the past century and recognition of the importance of diversity have increased interest in research involving ethno-cultural factors that impact mental health. For example, important psychological constructs, such as self-concept and ethnic identity, have been indicated to develop within cultural context and impact psychological wellbeing (Brittian et al., 2013). The field of psychology, as a whole, is evaluating the merits of etic and emic approaches to research and clinical practice while exploring the importance and application of multicultural counseling/therapy (MCT; Sue & Sue, 2013). In contrast, within sport psychology, the influence of ethnic …

Animal Assisted Therapy And Support Animals, What Mental Health Professionals Know And Understand, Alexandro H. Velez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Animal-assisted therapy can greatly benefit mental health professionals with clients in and out of the school settings in many ways. It is believed mental health professionals are successfully implementing Animal Assisted Therapy, even though some are not. Mental health professionals who are not using Animal Assisted Therapy are not doing so as the result of various variables, such as lack of information, knowledge, training, certification and policies, which prevents them from using Animals Assisted Therapy with clients and the community. It is also believed some mental health professionals are using animals as part of therapeutic interventions without proper training. The …

"Just Call Me Poe": An Autoethnographic Look At Codeswitching And Passing, Paola Andrea Joya

Boise State University Theses and Dissertations

The following thesis is an autoethnographic look at codeswitching and passing in the children of immigrants. Specifically, this thesis uses methods of poetry, frameworks of re-photography, and narrative to investigate my personal experiences with these cultural phenomena over a lifetime. Grounding my work in theories on identity, culture, and co-cultural understandings, I investigate the evolution of my name from Paola, Paula, to Poe, as a representation of the length at which I attempted to assimilate and accommodate to the dominant group (U.S). It is my hope that this thesis helps to create community amongst those who have shared similar experiences …

Understanding Self-Assembly And Charge Transport In Organic Solar Cells Through Efficient Computation, Evan Miller

Boise State University Theses and Dissertations

Organic solar cells capable of sustainably generating electricity are possible if: (1) The structures assembled by photoactive molecules can be controlled, and (2) The structures favorable for charge transport can be determined. In this dissertation we conduct computational studies to understand relationships between organic solar cell compounds, processing, structure and charge transport. We advance tools for encapsulating computational workflows so that simulations are more reproducible and transferable. We find that molecular dynamic simulations using simplified models efficiently predict experimental structures. We find that the mobilities of charges through these structures—as determined by kinetic Monte Carlo simulations—match qualitative trends expected with …

Seed Predation By Owyhee Harvester Ants And The Potential Of Seed Introductions In Recovery Efforts For Slickspot Peppergrass, Jennifer A. Brown

Boise State University Theses and Dissertations

Slickspot peppergrass (Lepidium papilliferum) is a rare plant endemic to the sagebrush-steppe habitat in southwestern Idaho. Within sagebrush-steppe, the plant is restricted to microsites known as “slick spots”– shallow depressions of soil characterized by distinct clay layers and surface water retention that is higher than that of surrounding areas. Having one of the highest extirpation rates among rare plant taxa in Idaho, and considering its unique habitat requirements, limited range, and declining numbers, land managers and conservationists have voiced concern regarding the species’ long-term viability. While range-wide declines in slickspot peppergrass have been attributed largely to the loss …

How Extrinsic Mortality Affects Age At Menarche And Fertility In A 1970 British Cohort, Kimberly Marie Neagle

Boise State University Theses and Dissertations

Extrinsic mortality is the likelihood of mortality that is not conditional on reproductive effort. It does not depend on a person’s behavior and cannot be changed by altering behavior. Theoretically, extrinsic mortality plays a major role in the evolution of life history and the variation in reproductive strategies. Using life history theory as a framework, with higher extrinsic mortality cues women should speed up reproduction to maximize fitness in uncertain or risky environments, and in environments with little risk, women can allocate their energy to somatic development and in this time, accrue resources such as education and career opportunities. Thus, …

Development Of A Statistical Shape-Function Model Of The Implanted Knee For Real-Time Prediction Of Joint Mechanics, Kalin Gibbons

Boise State University Theses and Dissertations

Outcomes of total knee arthroplasty (TKA) are dependent on surgical technique, patient variability, and implant design. Non-optimal design or alignment choices may result in undesirable contact mechanics and joint kinematics, including poor joint alignment, instability, and reduced range of motion. Implant design and surgical alignment are modifiable factors with potential to improve patient outcomes, and there is a need for robust implant designs that can accommodate patient variability. Our objective was to develop a statistical shape-function model (SFM) of a posterior stabilized implant knee to instantaneously predict output mechanics in an efficient manner. Finite element methods were combined with Latin …

Recreation, Fire And Disease Create A Mosaic Of Threats For Golden Eagles In Southwestern Idaho, Caitlin Marie Davis

Boise State University Theses and Dissertations

Anthropogenic stressors have resulted in ecosystem impoverishment and biodiversity loss worldwide. As the strength and reach of the human footprint increases, investigation of the additive or interactive effects of synergistic stressors on the landscape is imperative for conserving ecosystems and species within them. Apex predators can reflect how stressors impact ecosystems because of bottom-up effects. Golden eagles (Aquila chrysaetos) are apex predators of North American sagebrush-steppe ecosystems that are impacted by a suite of stressors, including wildfire, outdoor recreation disturbance, and habitat loss. We investigated whether multiple threats had additive or interactive effects on golden eagle occupancy, reproduction, …

Validity Of The Polar M430 Among Females Of Varying Fitness Levels, Body Fat Percentage, And Reported Physical Activity, Kevin Earl Miller

Boise State University Theses and Dissertations

Introduction: The Polar M430 is a heart rate monitor that uses a non-exercise prediction method to predict one’s V̇O_2max. Research has revealed that this method will overestimate predicted V̇O_2max among females. Studies have investigated the validity of this method, however, these studies have not taken into account how physical activity (PA) levels, body fat percentage, or measured V̇O_2max could affect the prediction value. Purpose: The purpose of this study was to investigate the validity of the Polar M430 in predicting V̇O_2max amongst females of varying PA levels, body fat percentages, and fitness levels. Methods: Forty-eight …

Sexual Abuse And Assault Against Minors: A Spatial Application Of Routine Activity Theory, John Ropp

Boise State University Theses and Dissertations

Recent advances in criminological theory have changed the way we approach age-old questions of criminality. Routine activity theory, hotspots analyses, and spatial-statistical models have become popular methods of investigating criminal phenomena. This study tests the applicability of spatial analyses and routine activity theory by examining the relationship between a geographically-measured lack of guardianship composite score and the occurrence of child sexual abuse (CSA) and sexual assault perpetrated against minors (SAAM). Moran’s I, single kernel interpolation, dual kernel interpolation, and spatial lag regression are used as methods of analysis for this study. Strong evidence of spatial clustering is observed and a …

Public Spheres Of Influence And The Effects Of The Alt-Right: A Qualitative Study Of Conservative Counter Spheres Through Representative Media Outlets, Luke Yeates

Boise State University Theses and Dissertations

Contemporary understanding of Habermasian public spheres of influence points to a conglomeration of competing counter-spheres all vying for hegemonic control. The interaction of these spheres creates dynamic and shifting landscapes through which individuals and news media outlets maneuver. One of the larger influential groups in the United States is the establishment conservative counter-sphere, but recent political developments have given rise to a new counter-sphere, one that is increasingly racist and violent. The alt-right has grown in its political influence since the 2016 presidential election and its presence is likely having an effect on larger, more established groupings as it vies …

"There Should Be No Tolerance For Intolerance": Internal Antagonism In Online Fan Communities, Michelle W. Jones

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This thesis focuses on exploring cases of internal antagonism in fan communities, with a specific focus on the Steven Universe (2013 -) and Undertale (2015) communities present on Tumblr and Twitter. Internal antagonism is a phenomenon that occurs when a community targets a member within itself instead of outside itself, often as a way to mediate and regulate the community and reinforce its values. This thesis considers three case studies of internal antagonism with both physical and digital implications in order to better understand the role it plays in shaping and sustaining online fan communities as well as mediating the …

Explorations And Collaborations On Two Under-Recognized Native American Food Crops: Southwest Peach (Prunus Persica) And Navajo Spinach (Cleome Serrulata), Reagan C. Wytsalucy

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Agricultural production among the Native American populations of the Southwest declined significantly during the twentieth century. Corn, beans and squash, the three most recognized traditional food crops, remains widespread, but knowledge regarding the traditional management of these crops was lost. The loss of traditional knowledge for Southwest Indigenous Nations was more pronounced for the Southwest peach (Prunus persica) and Navajo spinach (Cleome serrulata Pursh). The Navajo, Hopi, and Zuni Nations are all seeking to increase the availability of traditional crops for their original uses, such as for food and wool dye. In order to revitalize traditional agriculture …

Using Novel Spectroscopy Tool To Study Organized Self-Assemblies, Mohammad Rafe M Bin Hatshan

Dissertations

Organized self-assemblies are the cornerstones for countless biological processes and are integral parts of lipids, proteins, carbohydrates, nucleic acids, and cell membranes. Several man-made organized assemblies also play a vital role in interdisciplinary sciences that include micelles, reverse micelles, polymers, polyelectrolytes etc. Weak chemical interactions such as hydrogen bonding, p-p stacking, hydrophilic-hydrophobic and electrostatics often result in interesting organized self-assemblies. Understanding organized self-assemblies provides a huge opportunity to mimic naturally occurring biological macromolecules, design materials and develop strategies for specific applications. Several techniques are routinely used to understand the organized self-assemblies, and optical techniques play an important role in most …

Improving Internal Reliability Of A Trauma-Informed Care Program Evaluation Instrument, Ashley A. Raposo-Hadley

Capstone Experience: Master of Public Health

The project has analyzed the recent changes to the trauma-informed care (TIC) curriculum evaluation instrument by assessing the changes in Cronbach’s Alpha scores and effect significance. Data was collected from pre-training and post-training surveys completed at the time of delivery of the TIC curriculum training. Participants included hospital staff and medical or nursing students at Nebraska Medicine, University of Nebraska Medicine Center, and Health Creighton University Medical Center. The three research questions are (1) Did the item edits change item subgroupings? (2) Did the item edits increase instrument reliability? (3) Did the item edits impact statistical significance? 3 subscales, working …

The Special Norms Thesis: Why Congress's Constitutional Decisionmaking Should Be Disciplined By More Than The Usual Norms Of Politics, Mark D. Rosen

Cardozo Law Review

Even if we accept that the most basic rules of fair play do not apply to our nation's political representatives when they battle one another in the ordinary lawmaking process, we should demand more when they engage in constitutional decision-making. This Article explains why our constitutional system demands different rules of engagement when constitutional questions are at issue, and exactly what we should expect of members of Congress in these situations.

The Law Of The Soul, Arthur J. Jacobson

Cardozo Law Review

Do you believe that human beings have souls, and dogs, for example, do not? And if you believe that humans have souls, then must you also believe that in order for the soul to be a soul it must be immortal? Or can the soul be born with us and die with us, never to return, and still be a soul? And if you believe that it must be immortal, then must you also believe that if it is not immortal, then it is just a psyche - the forms of awareness, desiring and imagining that humans share with all …

Antibiotic Drug Discovery Targeting Bacterial Metabolism, Miranda J. Wallace

Theses and Dissertations (ETD)

Over the last century, the use of antibiotics has enabled many advances in modern medicine, making life as we know it possible. In recent years, however, emerging bacterial resistance to virtually all major antibiotic classes has resulted in a worldwide increase in morbidity, mortality, and financial burden associated with drug resistant infections. The antimicrobial resistance crisis presents an urgent need for new antimicrobials with distinct mechanisms of action from existing drugs. The current pharmaceutical pipeline of new antibiotics is limited due to three obstacles: a lack of understanding of resistance mechanisms, a dearth of novel mechanisms of action among new …

Investigation Of Narrow Spectrum Targets In Antibacterial Drug Discovery, Jesse Jones

Theses and Dissertations (ETD)

Background: Significant concerns are associated with the use of broad-spectrum antibacterial agents, including collateral eradication of beneficial bacteria from the human microbiome, the onset of antibacterial-associated infections, and continued emergence of antibacterial drug resistance. As such, a critical need for novel and selective antibacterial targets exists. The investigation of two such targets, each pertaining to the highly concerning infections caused by streptococcal species and Clostridioides difficile, are presented herein. Bacterial topoisomerase I represents a potentially promising narrow-spectrum target as studies have arisen demonstrating its essentiality in bacterial species lacking the only other type IA topoisomerase (topoisomerase III). Additionally, recent studies …

An Examination Of Principal Practices And Successful Outcomes For Black Male High School Students, Marck E. Abraham

Education Doctoral

No abstract provided.

Examining Partnerships Between Suburban Principals And Superintendents, Casey M. Van Harssel

Education Doctoral

School districts, and their individual schools, are guided by the leadership of superintendent-principal pairs. While superintendents and principals have a working relationship, not all these working relationships can be described as a partnership. Little is known about how partnerships between superintendents and principals are developed, maintained, and repaired and how established partnerships impact organizational effectiveness. Specific to suburban districts, the recent increased level of accountability for student achievement, under the Every Student Succeeds Act, is amplified due to the decrease in threshold numbers for accountability subgroups. The purpose of the study was to examine principal-superintendent partnerships in suburban districts using …

Do Psychopathic Traits Influence Distractibility By Empathy-Eliciting Pictures?, Priya M. Reji

Student Theses

Empathy is a crucial component in forming interpersonal connections, and reflects the ability to share and understand the feelings of others. Psychopathy is often associated with a reduced ability to feel and display empathetic concern towards other people. The Response Modulation Hypothesis argues that such individuals have an attentional deficit, which makes it difficult for them to shift focus between stimuli, thus individuals who have high scores on the interpersonal-affective factor of psychopathy have an increased ability to ignore emotional stimuli that are goal-irrelevant. The current study investigated whether psychopathic traits would influence distractibility on an emotional Stroop (eStroop) task. …