17007 research outputs found
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Kelce Faculty
No full textBlack and white photo of six Kelce faculty. The two men on the left are Mike Muoghalu and Choong Y. Lee.https://digitalcommons.pittstate.edu/kelcebuilding/1091/thumbnail.jp
Hughes Hall - Fountain
No full textBlack and white photo of Hughes Hall, taken from low to the ground, the fountain runs in front of it.https://digitalcommons.pittstate.edu/hughesbuilding/1055/thumbnail.jp
Workshop Tools
No full textBlack and white photo taken in the workshop of Hartman Hall. Two men stand at an Allen Electric and Equipment Company Syncograph. A third man stands at what may be a Sioux Tools Valve Grinder.https://digitalcommons.pittstate.edu/hartmanhall/1003/thumbnail.jp
Firetruck at Hartman
No full textColor photo of Hartman Hall taken from on Joplin Street. At least one fire truck is in front of the building and people are outside.https://digitalcommons.pittstate.edu/hartmanhall/1026/thumbnail.jp
Gymnasium - Exterior
No full textBlack and white photo of the gymnasium building as seen from the Oval.https://digitalcommons.pittstate.edu/weede_gym/1016/thumbnail.jp
Gymnasium - Exterior
No full textBlack and white photo of the gymnasium building from the Oval.https://digitalcommons.pittstate.edu/weede_gym/1027/thumbnail.jp
Heckert-Wells Negatives, Undated
No full textScanned negatives of the exterior of Heckert-Wells, seen from the Ovalhttps://digitalcommons.pittstate.edu/ch-hw/1129/thumbnail.jp
Kitchen, Undated
No full textBlack and white photo of the kitchen inside of Chandler Hall for the Cooking Department. Students in white lab coats work at stations.https://digitalcommons.pittstate.edu/chandler-facs/1017/thumbnail.jp
Sentence Style Analysis of Edgar Allan Poe\u27s Short Stories
No full textHow people use grammar and writing has changed over the years. Someone who wrote around 1800 would not use the same technique as they use today, yet their writing is still understandable. This study uses modern grammar techniques to investigate the sentence structure and writing style used by Edgar Allan Poe in his short stories. The Reed-Kellogg system, the sentence traditional diagramming as seen and used in the undergraduate course English Grammar and Usage (ENGL202), and the textbook Grammar by Diagram by Cindy L. Vitto were used to help visualize Poe\u27s writing style and understand his writing. This system helps break up the data to better understand Poe\u27s sentence style and the types of sentences Poe utilizes. For data collection, I used The Essential Tales and Poems of Edgar Allan Poe, published by Sweet Water Press. Analyze the sentences and their type, pattern, moods, tense, and voice was completed using a table to map them out. The study shows that Edgar Allen Poe mostly uses complex indicative in the past perfect tense and active voice. Poe\u27s most used sentence pattern is pattern seven, Subject + Transitive Verb + Direct Object. Most of Poe\u27s stories are set as tales being told by a character about their past, being put in the first-person point of view
Bio-based light-healing isocyanate-free polyurethanes derived from carbonated soybean oil and coumarin
No full textIn response to environmental concerns and restrictions on isocyanate-based materials, researchers and the coatings industry are focused on developing eco-friendly isocyanate-free polyurethanes. This article introduces a novel class of environmentally-friendly, initiator/catalyst-free, UV-curable, self-healing non-isocyanate polyurethanes (NIPUs) synthesized from bio-based carbonated soybean oil (CSO) and non-toxic coumarin. The synthesis of these polymers is based on using a photo-reactive coumarin that undergoes a reversible [2 + 2] cycloaddition upon exposure to the wavelength of UV light. UV-curable three coumarin-terminated isocyanate-free polyurethane prepolymers were synthesized using CSO and three different amines and epoxy coumarin. Subsequently, a set of cross-linked NIPU polymers were obtained with exposure of365 nm UV irradiation. The photo-reversible nature of these polymers was investigated in response to various wavelengths of UV radiation. Additionally, their self-healing ability and the thermal and mechanical properties of NIPU coatings were studied using optical microscopy, thermogravimetric analysis, differential scanning calorimetry, and a universal testing machine. The outcomes demonstrate that this polyurethane has the potential to provide a sustainable alternative to isocyanate-based materials. Two examples of stimulated healing are given, that of healing a scratch and the other being the healing of a sample that has been mechanically stressed to failure in a tensile mode