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Highly Conjugated BODIPY Dye Capable of Generating Both Singlet Oxygen and Superoxide Radical Within the Phototherapeutic Window
Get PDFThe synthesis of a new BODIPY dye using a one-pot synthesis provides absorption and emission within the NIR-1 region. The maximum absorption wavelength of this dye occurs at 645 nm with a molar absorptivity of almost 44,000 M-1 cm-1. By incorporating iodine into the ortho-position of the meso-phenyl substituent gives this dye the ability to generate both singlet oxygen and superoxide radical when irradiated within the phototherapeutic window of 600 nm to 850 nm
Quantifying Droplet Breakup Regimes in High-Speed Flow Fields with Diffuse Background Illumination
Get PDFUnderstanding the dynamics of droplet breakup in high-speed flow fields is critical for many aerospace applications such as liquid fuel injection into high-speed crossflow or weather encounters with high-speed vehicles. In such applications, thermophysical properties such as surface tension, viscosity, etc. as well flow parameters (Mach number) will drive the droplet breakup regime. The objective of this work is to implement diffuse background illumination (DBI) to quantify sessile droplet breakup. A shock tube will be employed to simulate high-speed flow conditions by generating shock waves of various strengths. Both head on and side imaging will be implemented to provide further insight into the breakup dynamics. Weber number will be used to identify breakup regimes. Center of mass calculations will be performed using high- speed imaging dat
No Shirt, No Adverse Employment Action, No Service: How the Eleventh Circuit’s Decision in Beasley v. O’Reilly Auto Parts Misinterprets the Ada’s Failure-to-Accommodate Provision
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Work in Progress: Exploring the Impact of International Experiences on the Development of Students’ Entrepreneurial Mindset
No full textInternational experiences, including collaborative online international learning (COIL) experiences that naturally increase accessibility, are of interest to many undergraduate students. These experiences provide educators a unique opportunity to develop a student\u27s entrepreneurial mindset (EM). Additionally, hands-on experiences aligned with the National Academy of Engineering’s (NAE) grand challenge themes (Sustainability, Security, Health, and Joy of Living) support connections between the experience, disciplinary knowledge, multicultural awareness, and EM. Through this Work-in-Progress (WiP) study, we seek to answer: 1) How do international experiences influence undergraduate science and engineering students’ EM, and 2) How does the international experience modality (i.e., study abroad or COIL) impact development of EM? To understand the impact of these international experiences, we are designing a qualitative, parallel study across five U.S. institutions representing a mix of in-person and COIL international experiences for undergraduate students at different academic levels within science and engineering disciplines. We aim to connect transformative learning theory, focused on multiculturalism and connectedness, with international experiences using EM as the theoretical framework. While surveys will support understanding of multiculturalism gains and overall view of the experience, concept maps and reflections will be used to assess student’s growth in EM connectedness. A description of each institution’s partnership development and implementation is presented in this paper. We anticipate key results will include: 1) students’ positive perception through engaged learning, 2) student growth in EM connectedness, 3) students’ increased appreciation of multiculturalism, 4) all modalities support growth in student’s EM and multiculturalism competencies, and 5) in-person international travel components demonstrate a larger increase in multiculturalism competencies due to cultural immersion. The team is finalizing plans for these experiences in fall 2023 and will implement the experiences and collect data in spring 2024
A Project-based Learning Approach Improves the Calculation Skills of the Thermodynamic Properties of a Pure Substance
No full textStudents often struggle in calculating the Real Thermodynamic Properties (RTP) of pure substances, including enthalpy (H), entropy (S), specific volume (V), and internal energy (U). Project-Based Learning (PBL) offers an alternative instructional approach that integrates computational tools with inductive teaching methods. This study evaluates the effectiveness of PBL in a thermodynamics course, demonstrating that over 90% of students perceived an improved understanding of RTP calculations, with 70% achieving higher grades post-PBL implementation
Student Academic Policies Committee Minutes of the Academic Senate 2025-09-22
No full textApproved minutes of a meeting of the Student Academic Policies Committee of the Academic Senate of the University of Dayton
Pope Francis Reflections
No full textAs we return to campus after the Easter break, we do so in the shadow of the death of PopeFrancis
A 175-Year Legacy
No full textFrom my office in St. Mary’s Hall, I often find myself gazing out the window at the toweringyet graceful Immaculate Conception statue on the Roesch Library lawn. With armsoutstretched, Mary welcomes all who enter our campu