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Simulating international organizations
No full textClick on the DOI link to access this article at the publishers website (may not be free).Using simulations in a class on international organizations is a wonderful way to provide students with hands-on experience and deepen their engagement. Taking on different roles through simulations can be exciting for students. Another benefit stems from the availability of artificial intelligence tools that are changing learning, so incorporating role-play exercises gives students a genuine experience, and instructors can be confident that the students are responsible for their own learning. With so many design possibilities, determining the first steps for incorporating simulations in the classroom can be difficult. The chapter begins by addressing the basic aspects to consider before introducing a simulation in class, before highlighting some of the “out-of-the-box” possibilities for incorporating simulations and taking a deeper dive into how instructors can design customized simulations. The chapter concludes with a discussion of how to integrate this learning exercise through debriefing and assessment. © The Editor and Contributors Severally 2025. All rights reserved
Rare earth element recycling: a review on sustainable solutions and impacts on semiconductor and chip industries
No full textThis is an open access article under the CC BY license.The increasing demand for rare earth elements (REEs) in advanced technologies, particularly in semiconductor and chip manufacturing, has led to rising production costs and significant environmental impacts due to the extraction and purification processes. The uneven geographical distribution of REE resources further complicates global supply chains, posing challenges for sustainable semiconductor manufacturing. In response, the recycling of REEs from end-of-life electronic products has emerged as a promising solution to address these issues. This article provides an overview of REE recycling processes in the semiconductor and chip industries, discussing the role of rare earth metals in these technologies and the importance of recycling from both economic and environmental perspectives. This article highlights various current and emerging recycling technologies, focusing on the chemical and hydrometallurgical routes, which are preferred due to their lower environmental impact. Recent research and developments in REE recycling are explored, including new manufacturing approaches that could enhance the efficiency and sustainability of these processes. This article also presents case studies of successful industrial implementations of sustainable recycling technologies, demonstrating their practical applications. Finally, the article outlines the potential for improving REE recycling in semiconductor manufacturing, emphasizing its positive impact on both the environment and the economy. It aims to serve as a valuable resource for researchers, journals, and funding agencies, highlighting the significant role of REE recycling in promoting sustainable manufacturing in the semiconductor, chip, and related industries. © The Author(s) 2025.Rare Earth Elements for Europe; European Commission, EUThe Rare Earth Elements for Europe (REE4EU) project is a collaborative initiative funded by the European Union aimed at developing technologies for REE recycling from e-waste. This project developed an innovative metallurgical process incorporating high-temperature electrolysis and hydrometallurgical separation for recovering REEs from industrial residue and end-of-life products through energy-efficient and environmentally benign processes. The REE4EU project collaborates with industry partners to implement these technologies on an industrial scale, promoting a closed-loop recycling system for REEs in Europe []
Aerodynamic performance evaluation of a small UAS using multi-fidelity numerical analyses
No full textThis is an open access article under the CC BY license.This study focuses on developing a fixed-wing aerodynamic performance model for the GREAT SHARK 330 UAS. The aerodynamic performance, static stability, and control effectiveness of the isolated-airframe configuration were evaluated using two numerical approaches: high-fidelity Computational Fluid Dynamics (CFD) simulations with StarCCM+ and a mid-fidelity surface-vorticity flow solver using Flight Stream. The results demonstrated good agreement between Flight Stream and Star CCM+ within the linear flow regime, while StarCCM+ exhibited more pronounced non-linear behavior at higher flow and control surface deflection angles. Given its lower computational cost, FlightStream offers a practical alternative for rapid aerodynamic evaluation. The study also highlighted certain limitations of the FlightStream approach, which will be addressed in future work. Future efforts will focus on dynamic stability analysis and validation of the aerodynamic model using flight-test data provided by Kansas State University. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved
Comparison of novel chest seal designs to commercially available chest seals at relevant physiological pressures
No full textClick on the DOI link to access this article at the publishers website (may not be free).Background: Tension pneumothorax is a leading cause of preventable death in combat scenarios. When treating a chest wound with the potential for open hemopneumothorax using a chest seal, it is important that it efficiently drain fluid from the chest cavity. We tested the ability of commercial and novel chest seal designs to drain fluid from a simulated chest wound. Methods: Eight novel laminar chest seal designs were created and compared to six commercially available chest seals. Closed-cell foam with a hole was used to simulate a chest wound. Fluid pressures of 10, 30, and 100cmH2 O were tested. Mean flow rate through the chest seals was calculated. The percentage of the laminar channels completely saturated with fluid was also measured. The effect of laminar channel width and quantity on the dependent variables was determined. Results: Novel chest seals with the highest flow rates were comparable to commercial chest seals with the highest flow rates at all pressures. Channel saturations were also similar between novel and commercial chest seals. As the width of the laminar channels increased so too did flow rate (p=.048), while the percentage of channel saturation decreased (p=.006). As the quantity of channels increased, the flow rate tended to increase (p=.02), and percentage of channel saturation decreased (p=.03). Conclusions: Laminar vented chest seals with wider channel widths and more channels had higher flow rates and lower percentages of channel saturation. Certain novel chest seal designs used in this study were comparable to commercial designs in flow rate and percentage of channel saturation. © 2025, Breakaway Media LLC. All rights reserved
Department of Dental Hygiene Class of 1998
No full textFirst row (left to right): Barbara Gonzalez, RDH, MHS, Visiting Assistant Professor; Lourdes Vazquez, RDH, MS, Assistant Professor; Patty Seery, RD, MHS, Clinic Coordinator; Dr. Chris Mar, Supervising Dentist; Denise Maseman, RDH, MS, Assistant Professor/Interim Chairperson; Diane E. Huntley, Associate Professor; Pamela Bumpurs, RDH, MHS, Clinical Educator; Tiffany Cowell, President; Michelle Parker, Vice PresidentSecond row (left to right): Denise Neubauer, SADHA President; Phil Spohn, Class Liaison; Lucinda Strunk, Treasurer/Secretary; Jennifer Arnold, SADHA Secretary/TreasurerThird row (left to right): Tina Adams. Angie Calhoun;. Tamara Cuthbert, Kim Evenson, Kimberly Foster, Jennifer HokeFourth row (left to right): Terri Jennings, Lori Jones, Rebecca Krehbiel, Karrie Lockamy, Mary Mills, Valerie Morris, Brynn Musson, Thao Ngo, Kristi ParrottFifth row (left to right): Cindy Presnell, Cynthia Rehm, Shelley Self, Julie Siebert, Annette Steele, Brenda Storm, Thuydung Tran, Kieu VuongDigitized by University Libraries' Technical Services Institutional Repository & Digitization group.Personal and non-profit use only
Reconstruction of paleoenvironment and revision of upper Morrison formation stratigraphy in the northeastern Bighorn Basin, Wyoming from lithostratigraphic, chemostratigraphic, and biostratigraphic indicators
No full textThesis (M.S.)-- Wichita State University, College of Liberal Arts and Sciences, Dept. of of GeologyAcross the western United States, the Morrison Formation documents varied paleoenvironments, associated fauna, and their evolution throughout the Upper Jurassic. While the Morrison has been well-explored, there remain gaps in knowledge about the stratigraphy of the formation. In the Bighorn Basin of northwestern Wyoming, a disconformity exists between the uppermost Morrison and the overlying Cloverly, leaving an incomplete section. In addition, limited exposure of the surviving upper Morrison beds has hindered exploration of the upper Morrison in this basin.
In this study, three new sections are reported from the upper Morrison in the Indian Pass 7.5 min Quadrangle of the northeastern Bighorn Basin. Compared to other Morrison sections, the upper strata of these new sections contain abnormal concentrations of a type of weathered volcanic ash, bentonite. Bentonite is common throughout the Morrison, where it generally occurs as thin beds measuring less than a meter in stratigraphic thickness. At the new sites, bentonite is much more abundant, with the upper thirty meters or more of each section being dominated by bentonite. Other lithologies, including shales and sandstones, are present, but occur primarily as lenses within the bentonite beds. Such lithologic data, coupled with chemical composition data obtained with a pXRF, indicates that these bentonite-dominated exposures belong to a new member of the Morrison Formation, for which the name Spirit Mountain Bentonite is proposed.
The thickness of the bentonite likely reflects infilling of a syndepositional low. High abundances of calcium and magnesium, as well as the presence of gypsum nodules and microbialites, indicate that this low was an evaporative lake and its adjacent mudflats. A decline in the concentration of calcium and magnesium indicates that this lake gradually desiccated over the course of deposition of the Spirit Mountain Bentonite
Surface treatment strategies for improving adhesion of PEDOT:PSS coatings on aerospace fiber composites
No full textThis is an open access article under the CC BY license.Fiber-reinforced polymer matrix composites (FRCs) offer advantages such as high strength-to-weight ratio, low density, and cost-effectiveness. However, their limited electrical and thermal conductivity poses challenges in applications such as lightning protection, electromagnetic shielding, and radar absorption. In this study, the effect of PEDOT:PSS content as a coating on layered composites to enhance electrical conductivity and adhesion properties is systematically investigated for the first time. This study explores alternative methods to enhance conductivity, focusing on the adhesion stability of the conductive coating PEDOT:PSS on aramid, carbon, and glass FRCs. Three surface treatment methods—plasma treatment (PT), piranha solution treatment (PI), and a combination of GLYMO/APTES (GA)—were tested for their effects on surface energy and adhesion strength. FTIR spectroscopy revealed significant changes in surface bonds, indicating improved adhesion through new chemical interactions. Contact angle measurements showed improved wettability, with plasma and GA treatments yielding the best results. Peeling tests demonstrated minimal changes in electrical resistance after repeated cycles for plasma- and GA-treated surfaces, highlighting their durability. Cross-cut adhesion tests confirmed that plasma-treated surfaces exhibited the strongest adhesion. This study contributes to the understanding of surface coating techniques to enhance the electrical performance and durability of FRCs, with implications for aerospace, defense, energy, and other industries. © The Author(s) 2025.Selcuk University BAP; Wichita State University, WSU; Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK, (TÜBİTAK-2219); Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAKThe authors also extend their thanks to the Scientific and Technological Research Council of Turkey (T\u00DCB\u0130TAK-2219 project), Wichita State University, and the coordinator of Selcuk University BAP for their financial and technical support of this study
A computational method for multiple steady Hele-Shaw bubbles in planar domains
No full textClick on the DOI link to access this article at the publishers website (may not be free).We present a unified numerical method to determine the shapes of multiple Hele-Shaw bubbles in steady motion, and in the absence of surface tension, in three planar domains: free space, the upper half-plane, and an infinite channel. Our approach is based on solving the free boundary problem for the bubble boundaries using a fast and accurate boundary integral method. The main advantage of our method is that it allows for the treatment of a very high number of bubbles. The presented method is validated by recovering some existing results for steady bubbles in channels and free space. Several numerical examples are presented, many of which feature configurations of bubbles that have not appeared in the literature before. © 2025, the Author(s
Faculty Senate meeting, October 27, 2025
No full textAgenda: (Approval of Minutes): September 22, 2025 -- (President’s Report) / Christopher Stone -- (Committee Reports): Rules Committee / Victoria Koop -- (Old Business): Proposed change to 4.13 Chair Policy and Procedures (Term Limits) – Second rea
Interaction of matrix components and cells regulating cellular and molecular processes of glioma cells
No full textClick on the DOI link to access this article at the publishers website (may not be free).The aberrant production of extracellular matrix (ECM) in gliomas results in aggressive tumor invasion. Hyaluronic acid (HA) and increased collagen production in the glioma matrix regulate tumor cell proliferation and migration. However, the regulatory effect of these molecules on glioma cells remains unclear. In this study, we analyzed the cell migration, proliferation, and transcriptome of glioma cells on collagen and HA substrates to understand the regulation of cellular processes. We found that both U87 and primary glioma cells showed a higher proliferation level on a collagen substrate compared with a hyaluronate substrate in an AlamarBlue® assay. U87 and primary glioma cells showed higher migration velocity on collagen substrate compared with hyaluronate substrate, a substrate of mixed collagen and hyaluronate, and collagen gels. The pathways enriched among genes up-regulated on collagen substrate versus hyaluronate substrate include focal adhesion, regulation of actin cytoskeleton, ECM-receptor interaction, and PI3K-Akt signaling pathways, which are involved in the regulation of cell migration. The up-regulated differentially expressed genes (DEGs) include integrin receptors, ECM molecules such as collagen types I, IV, and VI, fibronectin, and laminins, as well as signaling pathway molecules AKT3, RAC2, PIP5K1C, PIP4K2A, and PIK3R2. We also observed the upregulation of matrix metalloproteinase (MMP) genes and components of the glycosaminoglycan degradation pathway in glioma cells on the collagen matrix compared with those on HA matrix. This study reveals the effect of collagen and HA on glioma cells at the transcriptional level and contributes to the understanding of potential targets for therapy