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Automated Optical Surface Strain Measurement System to Determine the Transfer Length in Pretensioned Concrete Railroad Ties
Get PDFThis report documents the advances that have been made to determine the transfer length of pretensioned concrete railroad ties using non-contact surface displacement measurements by digital image correlation. The work has culminated with two fully-functional devices that address specific needs of the industry. The first device utilizes a multi-camera method for measuring the surface strain profile on a railroad tie and determining the associated transfer length to within +/- 1.5 in. with as few as 5 independent measurements of surface strain. The work represents a practical step towards the continuous monitoring of in-plant prestressed railroad tie production, using transfer length as a quality control parameter. The second device is capable of making measurements of strain in a real-time continuously scanning/traversing (CST) manner over the entire distance range of interest on the tie associated with transfer-length development. It was shown to be capable of a strain measurement resolution of nominally about ± 20 microstrain, at traversing speeds of up to several inches per second
Yoga, singing, and the singer: a balance of effort and ease
Get PDFMaster of MusicSchool of Music, Theatre, and DancePatricia ThompsonThis report explores how the practice of yoga can support singing and the singer. Through the actions of movement, proprioception, exteroception and interoception, yoga can improve body awareness and provide accessibility to a full, expansive breath. These combined skills can produce a healthy and consistent tone upon which a singer can depend and succeed. In addition to physical benefits, yoga can provide psychological and emotional support. This is accomplished through breathwork that balances the nervous system and allows singers to flourish under the many stressors of a performance or teaching career. This report will explain how and why incorporating a yoga practice into voice work and teaching is wholly beneficial
Expanding “Communities and Collections” in the K-State Research Exchange (K-REx) to benefit the K-State Community and Beyond
No full textKansas State University has used its institutional repository, the K-State Research Exchange (K-REx), to store and share its first year experience program, K-State First, and notably its common reading program, K-State First Book. We have done so with the aim that the accessibility and preservation of these documents ensures program stability, promotes engagement with first year programming, and provides the ability to foster growth,educational opportunities, and community building outside of K-State. Moving away from research concentrated repositories and taking a more holistic approach to scholarship, especially when realizing the pedagogical significance of collaborative campus programming, institutions can showcase, discover, preserve, and grow programs that shape campus communities and engagement.
This session will provide an overview of K-REx and spotlight the digital archive of the university’s first year experience program and common reading program, K-State First Book. We will discuss the benefits and challenges to expanding the purview of your repositories. We talkthrough the types of materials we decide to host in our repository and why we share what we do. We will also provide recommendations on new ways to evaluate what belongs in institutional repositories and how this diversity can benefit your program, your institution, the community, and others
Repurposing p97 inhibitors for chemical modulation of the bacterial ClpB–DnaK bichaperone system
Get PDFThe ClpB–DnaK bichaperone system reactivates aggregated cellular proteins and is essential for survival of bacteria, fungi, protozoa, and plants under stress. AAA+ ATPase ClpB is a promising target for the development of antimicrobials because a loss of its activity is detrimental for survival of many pathogens and no apparent ClpB orthologs are found in metazoans. We investigated ClpB activity in the presence of several compounds that were previously described as inhibitor leads for the human AAA+ ATPase p97, an antitumor target. We discovered that N2,N4-dibenzylquinazoline-2,4-diamine (DBeQ), the least potent among the tested p97 inhibitors, binds to ClpB with a Kd∼60 μM and inhibits the casein-activated, but not the basal, ATPase activity of ClpB with an IC50∼5 μM. The remaining p97 ligands, which displayed a higher affinity toward p97, did not affect the ClpB ATPase. DBeQ also interacted with DnaK with a Kd∼100 μM and did not affect the DnaK ATPase but inhibited the DnaK chaperone activity in vitro. DBeQ inhibited the reactivation of aggregated proteins by the ClpB–DnaK bichaperone system in vitro with an IC50∼5 μM and suppressed the growth of cultured Escherichia coli. The DBeQ-induced loss of E. coli proliferation was exacerbated by heat shock but was nearly eliminated in a ClpB-deficient E. coli strain, which demonstrates a significant selectivity of DBeQ toward ClpB in cells. Our results provide chemical validation of ClpB as a target for developing novel antimicrobials. We identified DBeQ as a promising lead compound for structural optimization aimed at selective targeting of ClpB and/or DnaK
Effects Of Acclimation Position On Detachment Of Tethered Culex Quinquefasciatus
Get PDFElectropenetrography (EPG) allows researchers to observe, record,and quantify the feeding behaviors of arthropods. [2] EPG has beentypically used to study the relationship between plants and plant-eating arthropods.
EPG involves wiring insects into electrical circuits to visualizeelectrical signals associated with each insect feeding behavior. (A)
By using EPG, researchers can understand how various factors affectarthropod feeding patterns. [1]
Culex quinquefasciatus (Cx. quinqs.) are known vectors of virusessuch as Rift Valley fever and Japenese encephalitis, which cansignificantly affect veterinary and human health.
To safely study how viruses affect mosquito feeding behavior,detachment from the EPG wire must be zero. Since July 2021, thedetachment rate in our studies has been 0.47%.
Different wiring protocols have the mosquitoes either hanging orstanding following the attachment of EPG wires, but it is not clear ifusing one method or the other results in more insect detachments
2020 Kansas Performance Tests With Soybean Varieties
No full textSoybean performance tests are conducted each year to provide information on the relative performance of new and established varieties and brands at several locations in Kansas
Creating a new seminar courses: Making magical one-credit courses
Get PDFOne-credit classes can be instrumental to a student’s success. Join two adjunct faculty librarians as they share their best practices for developing brand new one-credit first-year experience seminars. Planning a seminar course can be an exciting and challenging experience for both experienced instructors as well as novices. This presentation will provide information to those interested in teaching a new course for the first time and are unsure where to start. Attendees will leave this session knowing more about the needs of students, the right workload for a one-credit class, and how to make classes meaningful and valuable to students
Using Tensioned Pullout Tests to Determine the Bond-Slip Relationship and Splitting-Propensity of Reinforcements Used in Pretensioned Concrete Railroad Ties
Get PDFA study was conducted to evaluate the bond and splitting propensity characteristics of 12 different 5.32-mm-diameter prestressing wires used in the production of prestressed concrete railroad ties. Establishment of the bond-slip relationship of these wires at both transfer of prestress (transfer bond) and under flexural loading (flexural bond) was necessary to enable the accurate modeling of these ties using finite elements. Transfer bond and flexural bond of various indent patterns were tested using tensioned pullout tests. Specimens of various sizes with single or multiple wires were tested to determine the effects of cover and wire quantity on bond. Results from the testing program showed 1) the tensioned pullout tests could be used to predict the transfer length of prisms made with the same reinforcement, 2) the indent geometry depth and side-wall angle are good indicators of the likelihood of specimen splitting cracks, and 3) the importance of adequate concrete cover to eliminate potential splitting cracks
A Comprehensive Study of Prestressing Steel and Concrete Variables Affecting Transfer Length in Pre-Tensioned Concrete Crossties
Get PDFA comprehensive study was conducted to determine the variation of transfer length in pretensioned prestressed concrete railroad ties with varying prestressing steel types and concrete parameters. The in-depth evaluation included eighteen different prestressing reinforcement types that are employed in concrete railroad ties worldwide. The study consisted of two phases: Lab- Phase and Plant-Phase. Throughout the study, transfer lengths were determined from surface strain measurements on pre-tensioned concrete members. During the Lab-Phase, pre-tensioned concrete prisms were fabricated to replicate plant manufactured crossties. A special jacking arrangement was employed to ensure that each of the reinforcements was tensioned to the same force. Later, during the Plant-Phase, pre-tensioned concrete railroad ties were fabricated at a concrete crosstie manufacturing plant using the same reinforcements. In addition, a long-term study was conducted on plant-manufactured crossties to determine the variation of transfer length due to in-track loading
I Have Many Skills: Becoming the Xena of Teaching Modalities
No full textWhile COVID-19 cases rose throughout the spring and summer months, faculty were expected to create flexible and engaging online learning environments, as many understood that courses would not represent the common classroom experience that students hope for as they begin college. Much like the titular warrior princess Xena, who faced overwhelming challenges and honed her impressive multitude of skills, faculty quickly learned and integrated new online teaching strategies and created varying new course modalities. Together we’ll explore the skills we’ve built and challenges we’ve faced that can be integrated into first-year courses moving forward through pandemic teaching and beyond