1,653 research outputs found
Investigation of the Link between Media Acidity and pI in Obtaining Optimum Surface-Enhanced Raman Scattering for Proteins
Get PDFSurface-enhanced Raman spectroscopy (SERS) is an important tool in the characterization of proteins, which can lead to vital information pertaining to biological functions. Spectra of lysozyme, bovine serum albumin (BSA), catalase, and hemoglobin were obtained using SERS on silver colloids with sodium sulfate as the aggregating agent. Optimization of the SERS was attempted through adjustment of the acidity of sulfate aggregating agent. A link was investigated between the pI (pH at which there is no net charge on the molecule) of the proteins and the pH of the solutions needed for optimum SERS. It was found that any pH higher than the pI of the protein would not result in readable Raman bands. SERS of each protein were obtainable at any pH below the protein’s pI and was enhanced until reaching a pH of approximately two. At any pH lower than two, SERS were not possible because of inability of the aggregating agent to work in extreme pH conditions
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A Search for New Physics producing Jets, Large MT2, and Disappearing Tracks in 13 TeV Proton-Proton Collisions at CERN’s Large Hadron Collider
Get PDFThis work presents two searches for new physics characterized by pair-production of strongly interacting particles, each decaying to hadronic jets and a particle that is not detectable. The searches use the full 13 TeV proton-proton collision dataset produced by CERN’s Large Hadron Collider and recorded by the CMS detector from 2016 to 2018, with total integrated luminosity 137 fb−1. The presence of particles interacting too weakly to be detected is inferred using imbalance in the transverse momentum of the collision products, and sensitivity to pair- production is enhanced by requiring large values of the kinematic variable MT2 in events with at least two jets. The first search is inclusive, binning events using the total hadronic transverse energy, the total number of jets, the number of jets reconstructed as originating from a bottom quark, and either the value of MT2 in multijet events, or the transverse momentum of the jet in monojet events. The second search extends the first, by requiring the presence of a disappearing track in the event, and adds binning in the length and transverse momentum of the disappearing track. Both searches are sensitive to a variety of extensions to the Standard Model that include dark matter candidates. Of greatest interest, the results set constraints on pair production of squarks and gluinos as predicted by R-parity conserving supersymmetric extensions of the Standard Model, in which the lightest supersymmetric particle is a neutralino. The first search is sensitive to any decay chain terminating in Standard Model hadrons plus the neutralino, while the second specifically targets, with greatly enhanced sensitivity, decay chains containing an intermediate long-lived chargino. These constraints are the most stringent yet produced by any experiment
Supporting a Student with Asperger’s Syndrome: Perspectives From The Student, Sibling, and Non-Familial Tutor
Get PDFWhen working with a student with Asperger’s syndrome, tutoring strategies can vary depending on the person implementing them. The purpose of the presentation is to discuss current research in regards to successful tutoring strategies for students with Asperger’s syndrome, and which of these strategies have been successful in the high school student with Asperger’s syndrome’s academic endeavors. Dr. Shu-Fei Tsai, a faculty member of CWU, provided training on the use of self-management skills. Both the sibling and the tutor have been assisting the student with Asperger’s syndrome to implement self-management skills to track his academic work. The outcomes demonstrated that the student improved his assignment completion and academic performance through using self-management skills. The sibling and the tutor will discuss their experience of helping the student with Asperger’s syndrome. Furthermore, the student will share his voice of using these self-management abilities
Barriers to Prolonged Student Led Civic Engagement: Utilizing a PESTLE analysis to Create Sustainable College Student Experiences and Activist Praxis that Withstand Annual StudentTransitions & Attrition
Get PDFParticipation in college student clubs and organizations has been linked to the development of student leadership skills and a life-long commitment to community engagement. While the impact of participation can be meaningful, student experiences like continued engagement in clubs and organizations can be hard to sustain due to a constant revolving door of students as they graduate and move on to new experiences. In order to sustain the impact that clubs and organizations have on college student engagement, students must determine how to sustain the experience itself and avoid the potential collapse that accompanies student attrition. Central Washington University’s Students With A Purpose (CWU SWAP) stumbled upon this barrier of sustainability in its third year of existence. Even though the students had found success early on while getting the club off the ground; they learned the hard way that success does not just repeat itself, but is something that needs to be cultivated and reassessed to create a sustainable organization. The 21/22 elected student leadership team conducted a PESTLE analysis to understand their organization’s position, potential, and direction in relation to macro-environmental factors that impact sustainability. This analysis was further used to create a strategic plan that assisted the students in building a foundation that would provide a sustainable organization that will withstand the challenge of attrition and continue on after their time at the institution has ended and can be further applied to other clubs and organizations seeking to do the same
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