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Annual Report of the Wally Cordes Teaching and Faculty Support Center for the year ended…2024
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Algorithm-Based Linearly Graded Compositions of GeSn on GaAs (001) via Molecular Beam Epitaxy
Get PDFThe growth of high-composition GeSn films in the future will likely be guided by algorithms. In this study, we show how a logarithmic-based algorithm can be used to obtain high-quality GeSn compositions up to 16% on GaAs (001) substrates via molecular beam epitaxy. Herein, we use composition targeting and logarithmic Sn cell temperature control to achieve linearly graded pseudomorph Ge1−xSnx compositions up to 10% before partial relaxation of the structure and a continued gradient up to 16% GeSn. In this report, we use X-ray diffraction, simulation, secondary ion mass spectrometry, and atomic force microscopy to analyze and demonstrate some of the possible growths that can be produced with the enclosed algorithm. This methodology of growth is a major step forward in the field of GeSn development and the first ever demonstration of algorithmically driven, linearly graded GeSn films
Characterization of an Acetogenin-Carrying Nanosuspension and Its Effect on Bacteria of Interest in the Poultry Industry
Get PDFThis work aimed to develop a nanosuspension (NSps) as an acetogenin (ACGs) carrier, using soy lecithin (SL) and hydroxypropyl-β-cyclodextrin (βCD) named NSps-βCDSL-ACGs. It was characterized by various spectroscopic techniques (DLS, FTIR, UV-vis diffuse reflectance). Moreover, the NSps morphology was observed by transmission electron microscopy (TEM). Also, the antibacterial activity of NSps-βCDSL-ACGs was evaluated against strains of interest in the poultry sector. NSps-βCDSL-ACGs presented nanometric size (207–239 nm), acceptable polydispersity index (PDI) values (0.13–0.17) and a high Z potential value (−47.17–50.36 mV), demonstrating high stability. The presence of ACGs in NSps-βCDSL-ACGs was confirmed by FTIR analysis. The nanoparticles had a spherical shape and exhibited high inhibition potential against Salmonella Enteritidis (88.18%), Streptococcus gallolyticus (88.01%), Salmonella Typhimurium (86.28%) and Salmonella Infantis (77.02%) strains up to 48 h, and a reduction of up to 3 log CFU/mL was achieved for S. Typhimurium. Therefore, NSps-βCDSL-ACGs is an attractive option for implementing ACGs administration in the poultry sector to reduce the use of antibiotics and minimize bacterial resistance
Evaluating the Sustainability of the Portraits of Progress Event Using the METER Method to Achieve More Sustainable Small-Scale Events
Get PDFGlobal warming and climate change due to greenhouse gas emissions are causing society to re-evaluate how our actions affect the environment. This can be seen in many people’s professional and personal lives (Roy & Verplanken, 2016). The event management industry is no exception to this change of mindset. The purpose of this study is to measure the environmental impact of the Portraits of Progress Event on September 9, 2022, using the Measuring Events Through Environmental Research (METER) Method and provide recommendations to improve the sustainability of the event
Thanks for the Lyft: Optimizing Rideshare Safety in Arkansas
Get PDFRideshare companies such as Uber and Lyft, also known as Transportation Network Companies (“TNCs”), are underregulated and provide little protection to passengers, despite the thousands of women who have reported instances of sexual violence during their trips. This Comment argues that Arkansas law should be modified to strengthen the criminal background checks of potential rideshare drivers, require surveillance during rides, and classify the impersonation of a rideshare driver as a felony
Hiding in Plain Sight: How Corporations Can Save the National Park Service
Get PDFSince its inception, the privatization of the National Park Service has been a concern amongst conservationists. Recently, the topic gained more attention as the Trump Administration advocated for privatizing certain aspects of the parks. The dual purpose of the National Park Service, that of conservation and recreational efforts, has created conflict throughout the years. This Comment argues that Congress should update how the National Park Service manages concessioners. Full privatization is not needed, nor do private companies need to be kicked out of the parks. Part II of this Comment will present a history of the National Park Service, focusing on the history of concessions in the parks. Part III will review the history of congressional action on concessions management and examine the current contract structure. Part III will also look at more recent concerns from current concessioners to paint a picture of the issues plaguing the National Park Service’s partners. Part IV will discuss necessary updates to concessions management legislation and review successful business practices from prominent private corporations to strengthen concessions management
The Effect of Animal-Assisted Therapy on Prosocial Behaviors in Children with Autism Spectrum Disorders and Developmental Delay: A Pilot Study
Get PDFAutism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by difficulties in social interaction, nonverbal communication, and repetitive patterns (American Psychiatric Association [APA], 2013). Indeed, autistic individuals have been shown to have greater challenges with developing, maintaining, and understanding social relationships which can persist over their lifetime. Early intervention services are recommended for autistic children when they are young to help promote positive skills to enhance their functioning within society and increase their wellbeing over time. This is an especially pressing issue as ASD rates are rising – with the latest data now suggesting 1 in 36 children have the disorder (Centers for Disease Control and Prevention, 2023).
Several evidence-based treatment modalities are available for addressing symptoms related to ASD but interest in the use of animals to improve prosocial experiences and behavioral management has recently gained traction (e.g., animal assisted interventions; Nieforth, et al., 2021; Politte et al., 2015). This interest has been sparked due to findings suggesting that animal- assisted therapy (AAT) may enhance the quality of life for autistic youth by reducing stress and behavior problems and improving motor skills and communication (Nieforth et al., 2021). However, research investigating the use of animals, specifically canines, in clinical settings to promote prosocial behaviors in children who are at risk for developmental delay (DD) or ASD is in its infancy, leading to many gaps in evidence-based practice in the implementation of AAT and in the care of the canine (Flynn et al., 2020). The human-animal interaction between canines and children with DD and ASD along with canine care recommendations must be investigated to best understand the effect of AAT on child prosocial behavior
How Many Parents Regret Having Children?
Get PDFThe present study experimentally investigates the number of parents who truly regret having their children. By using an unmatched count technique developed by Gervais and Njale (2020), participants (N = 751) were randomly assigned to one of three conditions: an experimental “yes/no” agreement condition, the “target statement present” counting condition, and the “target statement not present” counting condition. Participants were also asked different questions regarding marital status, whether they had a disorder diagnosis, had a history of their parents being divorced, and other suspected moderator variables. Regret of having children was reported significantly less compared to previous studies (Piotrowski et al., 2021). However, the moderator variables, some of which are listed above, were found to be statistically significant when participants did explicitly indicate regret about having their child(ren). Further studies will need to be done with possible changes to the phrasing of the regret statement, exploring the moderator variables more in-depth, or utilizing a sliding scale for an indication of regret instead of a binary yes or no