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Students Sit at Tables
No full textStudents at tables, taken in the mid 50shttps://digitalcommons.pittstate.edu/unihistoryphotos/1342/thumbnail.jp
Tall Fall Grasses
No full textTall grasses are in front of trees with changing colors during the Fallhttps://digitalcommons.pittstate.edu/wideopenspace/1020/thumbnail.jp
Tick and Tick-Borne Pathogen Surveillance as a Public Health Tool Updating Kansas Geographic Distribution Map
Get PDFTicks transmit a wide variety of pathogens including viruses, bacteria, protozoa, and helminths to vertebrates. Their life cycle depends on blood meals from various hosts as well as environmental conditions such as the temperature and habitat type. With climatic changes, the expansion of tick habitat creates a need for annual surveillance of ticks and periodic update of geographic distribution maps. The present study conducted tick surveillance using flag-drag technique in both Crawford County and Anderson County, Kansas as well as ticks collected from a veterinary clinic in Crawford Co. during March-August 2023. Locations surveyed in Crawford Co. were a mined land area, recreational park, and a farm. Surveillance in Anderson Co. was conducted in recreational areas. Environmental data (temperature, humidity, etc.) were collected on-site at each visit. Collected ticks were identified in the laboratory using taxonomic keys at the species level and differentiated by sex and life stages. A total of 499 adult and nymph ticks were collected, the majority identified as Amblyomma americanum (90.4%, Males-204, Females-173, Nymphs-74) and a significant number identified as Dermacentor variabilis (9.6%, Males-25, Females-23). More than one species of Amblyomma were identified from the vet clinic. Identified ticks are being pooled and tested for selected bacterial pathogens using real-time PCR. The outcome of this study will help our Kansas State agency in updating the geographic distribution map of ticks in Kansas. Knowledge of pathogens carried by this tick population will assist in management programs and efforts to reduce the risk of tick-borne diseases
Bio-based Polyurethane Films: Effect of Hydroxyl Numbers on the Properties of the Polyurethane Films
Get PDFPolyurethanes have become ubiquitous in our surroundings, but their traditional production relies on fossil fuels, posing challenges due to resource limitations and material toxicity. To address this issue, I propose utilizing bio-based materials such as Limonene, derived from orange peels. Geraniol which is derived from rose and soybean polyol. This research aims to synthesize thiol through thio-ene click chemistry, involving the reaction of limonene with mercaptoethanol and thioglycerol, and reaction of geraniol with mercaptoethanol to produce thiols. The primary goal is to investigate the mechanical properties of polyurethane films as the number of hydroxyl groups increases. The structural morphology will be analyzed using Fourier Transform Infrared Spectroscopy (FTIR), while mechanical properties will be assessed through tensile and hardness tests
Installation of Rocheleau Blow Molder in the Department of Plastics Engineering Technology at PSU
Get PDFPlastic processing is an important step in creating products used in everyday life. With the generous donation of the Rocheleau R-4 blow-molding machine from Chevron-Phillips, we offer PSU students the ability to study blow-molding through hands-on lab activities. The Rocheleau blow molder, an extrusion blow-molding machine, is used to produce hollow plastic products through shaping a molten plastic parison in a specialized mold. Our team installed the Rocheleau R-4 blow-molding machine to resume production of Gorilla water bottles. These bottles are sold for the purposes of fundraising and advertising PSU and ETECH-Plastics. To successfully install the blow molder, we cleaned and prepped the machine, adapted the Gorilla bottle mold to the machine, and made adjustments to machine parameters to achieve desirable Gorilla bottles. Challenges we encountered included the functionality between the programmable logic controller and the human machine interface, and adapting the mold to fit the new machine. Despite these obstacles, we successfully installed the blow-molder. We also modified the mold and head tooling to produce parisons with the proper diameter in order to resume Gorilla bottle production. In service to future PSU Plastics students, we developed a process window and work instructions to allow novices to operate the machine safely and efficiently, as well as produce optimized blow-molded parts. Installation of the Rocheleau R-4 blow-molder will allow the production of the Gorilla Bottles to continue, so that future students and members of the plastic industry will have the opportunity to learn the about blow-molding through hands-on lab activities
The Populist Movement in Late Nineteenth century America
Get PDFThe Populist movement of the late nineteenth century proved a strong presence in states across the Southern and Western United States for a variety of reasons. Burdensome debt, frustration over monopolies, and overall financial decline characterize the core of Populist’s economic grievances, while demands for more direct participation of citizens in politics provide the basis of their political designs. Each state faced its own unique circumstances that Populists were responding to, but these provide a general framework for the movement nationwide. Despite these shared grievances, Populist candidates and parties did not see equal success across the nation. States west of the Mississippi saw a greater degree of victory, with many candidates reaching political office at the state or national level. East of the Mississippi, however, saw Populists comparatively stymied. The reasons for this disparity are complex and varied, but they largely return to the conditions within the states themselves. The economic conditions, political realities, and social divides of the South and West all played critical roles in Populist defeats and victories alike
The Synergistic Effect of Ionic Liquid-Modified Expandable Graphite and Intumescent Flame-Retardant on Flame-Retardant Rigid Polyurethane Foams
Get PDFPolyurethanes are large molecules formed by combining substances with hydroxyl groups with Poly isocyanates through polyaddition reaction for many applications like foams, adhesives, coating etc. Rigid polyurethane foams (RPUFs) are created for soundproofing and thermal insulation material. In this study, RPUFs have been modified by using nitrogen-phosphorus-containing flame-retardant, an ionic liquid (IL), and expandable graphite. To confirm the successful synthesis fourier transform infrared (FT-IR) spectra and nuclear magnetic resonance (NMR) spectroscopy have been performed. RPUFs were mixed with IL-EG and DPES to see how it changes the structure of the pore and improves the density and strength of the foam\u27s how it breaks down at high temperatures (thermal decomposition). The tests showed that IL-EG/DPES was better in thermal stability at high temperatures and had a great ability to grow and burn. When IL-EG and DPES were mixed in a 1:1 mixture, the flame-retardant RPUF had the most flame retardancy, the best flame-retardant performance, and the highest compressive strength also when increased the ratio of IL-EG/DPES shows the heat release rate (HRR), and smoke release rate (SRR) decreased significantly. The time to ignition (TTI) shows an increasing trend with high wt.% of flame-retardant. This happened because the IL-EG and DPES formed hydrogen bonds with each other, and the new flame-resistant coating on the RPUF surface stopped gas or heat from getting into the PU matrix
Pride Prom, 2024 - 104
No full texthttps://digitalcommons.pittstate.edu/prideprom2024/1103/thumbnail.jp