Physical Sciences and Mathematics Commons^™

222, Scott Brande

All 3D Rock Models

Model 222 - slate - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/222-8479f067f5e64585b10a12493bd2b6be

251, Scott Brande

All 3D Rock Models

Model 251 - anthracite - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/251-344dd33d2e8242e0a4717a571ec59b18

254, Scott Brande

All 3D Rock Models

Model 254 - hornfels - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/254-14a1101e965640a6b5c3f5149a8708e1

261, Scott Brande

All 3D Rock Models

Model 261 - conglomerate - sedimentary rock

SketchFab link: https://sketchfab.com/3d-models/261-ec9156ee607242a7b4a9504d7c3af499

264, Scott Brande

All 3D Rock Models

Model 264 - quartzite - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/264-946bceab652f4f4a9ce4a1bb6c4da9c0

270, Scott Brande

All 3D Rock Models

Model 270 - slate - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/270-815ee7884c6b4a18ad11bdd18d0b14bf

267, Scott Brande

All 3D Rock Models

Model 267 - marble - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/267-5cd2ad41b91248f5926fcc7a3848fba8

266, Scott Brande

All 3D Rock Models

Model 266 - hornfels - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/266-b23a020c463f4f69ac3dd1ae659a2050

268, Scott Brande

All 3D Rock Models

Model 268 - phyllite - metamorphic rock

SketchFab link: https://sketchfab.com/3d-models/268-ba9597eb3c504ed5b91fe6ab00e24418

Investigating Antimicrobial Producing Bacteria Within The Soil, Adam Zwawi

A with Honors Projects

Genetic sequencing techniques used to identify soil antibiotic bacteria

It’S Giving Genocide: What Feminist Theory, Indigenous Thought, And Queer Theory Have To Say About Climate Change, Owen George

MS in Environmental Studies Master's Theses

Climate change is having profound impacts on communities around the world. In some cases, and with time, more and more, the impacts of climate change are happening on a level that constitutes genocide. Raphaël Lemkin’s and Claudia Card’s definitions of genocide are most applicable to climate change as they have broader understandings of victim groups and social death, and they recognize that inaction to prevent reasonably foreseeable harm constitutes genocidal intent. The UN’s more rigid definition does, to a lesser extent, also apply to climate change. Across the three definitions examined here, the argument of climate change as genocide is …

การนำกลับคืนอะลูมิเนียมจากพลาสติกลามิเนตด้วยเครื่องปฏิกรณ์ไพโรไลซิสแบบสกรูเดี่ยว, ธนกร โลวาศรี

Chulalongkorn University Theses and Dissertations (Chula ETD)

“กระบวนการไพโรไลซิส” เป็นหนึ่งในกระบวนการที่ได้รับความสนใจในการจัดการขยะพลาสติก เพราะเป็นกระบวนการที่ส่งผลกระทบต่อสิ่งแวดล้อมน้อย ซึ่งในกรณีของขยะพลาสติกผสมชั้นอะลูมิเนียม กระบวนการไพโรไลซิสสามารถกำจัดส่วนที่เป็นพลาสติกออกไป และนำอะลูมิเนียมกลับคืนมาได้ โดยในงานวิจัยนี้จะศึกษาการนำอะลูมิเนียมกลับคืนจากขยะพลาสติกผสมชั้นอะลูมิเนียมด้วยเครื่องปฏิกรณ์ไพโรไลซิสแบบสกรูเดี่ยว โดยมีวัตถุประสงค์เพื่อหาภาวะที่เหมาะสมที่จะได้อะลูมิเนียมความบริสุทธิ์สูงกลับคืนมา งานวิจัยนี้แบ่งการศึกษาออกเป็น 2 ส่วน คือการศึกษากระบวนการไพโรไลซิส และการวิเคราะห์ข้อมูลเชิงเศรษฐศาสตร์ โดยการศึกษาส่วนแรกมี 2 ตัวแปรที่ศึกษา คืออุณหภูมิที่ใช้ในกระบวนการไพโรไลซิสที่ 425, 450 และ 475 องศาเซลเซียส และความเร็วรอบสกรูในเครื่องปฏิกรณ์ที่ 6, 7 และ 8 รอบต่อนาที จากการวิเคราะห์วัตถุดิบขยะพลาสติกพบว่ามีการสลายตัวของพอลิเมอร์ที่อุณหภูมิ 420-480 องศาเซลเซียส ในส่วนของการศึกษาอิทธิพลของอุณหภูมิที่ใช้ในกระบวนการไพโรไลซิสพบว่าเมื่ออุณหภูมิสูงขึ้น ทำให้พอลิเมอร์สลายตัวออกไปได้มากขึ้น และส่งผลให้อะลูมิเนียมมีความบริสุทธิ์สูงขึ้น และในการศึกษาอิทธิพลของความเร็วรอบสกรูในเครื่องปฏิกรณ์พบว่าเมื่อความเร็วรอบลดลง พอลิเมอร์จะสลายตัวได้มากขึ้น แต่ความบริสุทธิ์ของอะลูมิเนียมที่ได้นั้น ไม่เป็นไปตามทฤษฎี อย่างไรก็ตามกระบวนการไพโรไลซิสนี้สามารถนำอะลูมิเนียมกลับคืนได้ถึง 95% ที่ความบริสุทธิ์สูงสุดประมาณ 89% จากการดำเนินการที่อุณหภูมิ 475 องศาเซลเซียส ความเร็วรอบ 8 รอบต่อนาที และในส่วนของการวิเคราะห์ข้อมูลเชิงเศรษฐศาสตร์ พบว่าจะมีผลกำไรจากการขายอะลูมิเนียมที่นำกลับคืนมา 593,180 บาทต่อปี และจะใช้เวลา 7 ปีในการคืนทุน

A Competition Between The Economy And The Environment: An Analysis On The Impacts Of The Olympic Games For Host Countries, Phuong-Anh Ha

Undergraduate Research Awards

The Olympic Games have been known as the most celebrated international sporting event. However, the event has also faced countless criticisms regarding its environmental impact and the lack of benefits it brings to the host country’s economy. The paper analyzes the trade-offs between the environmental quality of a country and its economic growth that host countries make when deciding to host the Olympics. Specifically, this research seeks to explore how the Olympic Games influence the Gross Domestic Product (GDP) and carbon emissions of the host countries.

Biaryl Anion Radical Formation By Potassium Metal Reduction Of Aryl Isocyanates And Triaryl Isocyanurates, Steven J. Peters, Sean H. Kennedy, Colton J. Christiansen

Faculty Publications – Chemistry

The potassium metal reduction of aryl isocyanates(aryl = phenyl, p-tolyl, 3,5-dimethylphenyl, 4-biphenylyl, and 1-naphthyl) in THF with 18-crown-6 or in HMPA results in the formation of the corresponding triaryl isocyanurate anion radicals. Continued exposure to potassium results in loss of the isocyanurate anion radical and the eventual formation of the respective biaryl anion radical. The 1,1′-binaphthyl anion radical is found to undergo a cyclodehydrogenation reaction, which leads to formation of the perylene anion radical. When authentic triaryl isocyanurates are reduced with metal, the heterocyclic ring undergoes fragmentation with elimination of carbon monoxide to produce a triarylbiuret dianion. This ring opening …

Tau Leptons In The Search For Charged Higgs Bosons, Juan Carlos Cardenas Jr

Physics Dissertations - Archive

The Standard Model (SM) of particle physics, a gracefully crafted collection of particle theories, has made an astounding number of accurate predictions about the properties of particles and the fundamental laws that govern our universe. Among its long list of remarkable successes are the unification of the electromagnetic and weak forces, the prediction of elementary particles such as the Higgs boson, and its ability to precisely predict a wide range of particle cross-sections and branching fractions which have been verified experimentally.

Yet despite its immense predictive power, some major problems with the standard model are its failure to accommodate dark …

Novel Time Projection Chamber Techniques With Applications Towards Neutrinoless Double Beta Decay Searches, Nicholas K. Byrnes

Physics Dissertations - Archive

One of the highest priority endeavors in nuclear and particle physics is the search for Neutrinoless Double Beta Decay (0νββ). The observation of 0νββ would prove that the neutrino is a Majorana particle i.e. its own antiparticle, offering a mechanism by which the matter-antimatter asymmetry observed in our universe could be explained. This theoretical decay mechanism is only energetically favored in certain neutron-rich isotopes and, if found, would be the rarest decay process ever observed. To compete with the exceedingly long half-life of 0νββ, all contemporary searches are focused on the following detector performance metrics: Increasing the instrumented isotopic mass …

Frsc 480-002: Forensic Microscopy, Fisher David

Chemistry, Environmental and Forensic Science Syllabi

No abstract provided.

Groundwater Vulnerability Assessment And Dye Trace Of War Fork River In Daniel Boone National Forest, Will Hemenover

Mahurin Honors College Capstone Experience/Thesis Projects

Daniel Boone National Forest plays a key role in preserving much of Kentucky’s karst regions, natural resources including timber, mineral deposits, and biodiversity, including over 300 species of concern. The health of these environments is determined by surface and groundwater streams in the forest, and karst systems are an integral environment where these systems are active. War Fork, a tributary to the Kentucky River in Jackson County, Kentucky, is a remote and understudied hydrologic system in the Daniel Boone National Forest that contains recreational and logging land uses. Due to karst areas being susceptible to contamination because of rapid water …

The Effect Of Ions On The Adsorption Of So2 On A Water Nanoparticle, Nathaniel W. Gillispie

Mahurin Honors College Capstone Experience/Thesis Projects

Secondary Organic Aerosols (SOAs) have been of interest to atmospheric chemists for their harmful effects on human health and implications for climate change. Here, we explore a likely system from the early stages of SOA formation. Using compu- tational methods, water nanoparticles with and without ions were simulated. We observe the effects of ions on the adsorption of SO2 on this system. SO2 in the at- mosphere is associated with greater production of SOAs, so its study is important to SOA formation. We find that the overall structure of water is the most important observable affecting the location of SO2 …

Analysis And Detection Of Cyber Attacks In Multi Vehicle Systems Using Macroscopic Models, Abhishek Kashyap

Mechanical and Aerospace Engineering Dissertations - Archive

The study of potential cyber-attacks in different domains is an active area of research. Given that systems are becoming more and more interconnected, cyber physical systems that operate infrastructure and/or plants can make these assets more vulnerable and open to different attack vectors. The primary focus of this research is the modeling, analysis and detection of cyber-attacks on platoons of autonomous cars and swarms of UAVs. In this work, we consider scenarios wherein an attacker may hack into a subset of vehicles in a multi-vehicle system and make subtle modifications in their parameters. Due to the interconnected nature of the …

Implementation Of Prognosticator Algorithm For Initiation Of Serious Illness Discussions And Improving The Rate Of Palliative And Hospice Referrals, Joy Isebor

Doctor of Nursing Practice (DNP) Scholarly Projects - Archive

Context: Early serious illness conversations related to end-of-life and goals of care with seriously ill patients have been associated with improving patients' outcomes and quality of care (Bernacki et al., 2015). However, initiating these serious illness discussions has been challenging in the home-based primary care setting.

Objectives: To train and support home-based primary care clinicians in integrating best practices in serious illness discussions and decision-making engagement among patients sixty-five and older with serious illnesses, optimize the alignment between patient goals and the medical care they receive, improving their quality of life and the rate of palliative care and hospice referrals. …

Student Performance In Modern Physics In An Active, Partially-Flipped Classroom, Scott Yarbrough

Physics Dissertations - Archive

The effectiveness of the flipped classroom and hybrid-flipped (partially flipped, partially lecture-based) method of instruction has been extensively studied for high school and introductory undergraduate physics courses, and it has been shown to increase student understanding and performance. However, few studies have been done for upper-level undergraduate courses, and even fewer have been done for virtual courses. In Spring 2021 and Fall 2023, a fully virtual, hybrid-flipped Modern Physics course was taught, primarily to a class of primarily juniors and seniors, with some sophomores. All were STEM majors. The same course, with a similar enrolment and demographic of students, was …

The Direct And Inverse Scattering Problems For The Third-Order Operator, Ivan Toledo

Mathematics Dissertations - Archive

We consider the full-line direct and inverse scattering problems for the third-order ordinary differential equation containing two potentials decaying sufficiently fast at infinity. The direct scattering problem consists of the determination of the scattering data set when the two potentials are known. The scattering data set is made up of the corresponding scattering coefficients and the bound-state information. On the other hand, the inverse scattering problem involves the recovery of the two potentials when the scattering data set is available. We formulate the inverse scattering problem via a related Riemann--Hilbert problem on the complex plane. We describe the recovery of …

A Novel K-Nearest Neighbors Method Based On Generalized Feature Optimization For Precipitation Forecasting, Sean Guidry Stanteen

Mathematics Dissertations - Archive

This study introduces a novel k-nearest neighbors (kNN) method of forecasting precipitation at weather-observing stations. The method identifies numerous monthly temporal patterns to produce precipitation forecasts for a specific month. Compared to climatological forecasts, which average the observed precipitation over the prior thirty years, and other existing contemporary iterations of kNN, the proposed novel kNN method produces more accurate forecasts on a consistent basis. Specifically, the novel kNN method produces improved root mean square errors (RMSE), mean relative errors, and Nash-Sutcliffe coefficients when compared to climatological and other kNN forecasts at five weather …

A New Mechanistic Model Of Brain Metabolism With Optimal Parametrization, Alice Lubbe

Mathematics Dissertations - Archive

Models of glucose metabolism in the brain often focus on chemical exchanges and reactions that occur as part of the tricarboxylic acid cycle (TCA cycle). Experiments involving nuclear magnetic resonance (NMR) spectroscopy to detect and measure carbon-labeled isotopomers of metabolites such as glutamate in vivo inform kinetic, mechanistic models used to study metabolic pathways. In the present work, a new model with two compartments, astrocytic and neuronal, is developed using known biochemical processes and fit to experimental data coming from fully labeled glucose infusions. A gradient descent method is introduced and employed to obtain optimal flux parameter values involved in …

Integrating Machine Learning With Cure Models And Associated Inference, Wisdom Aselisewine

Mathematics Dissertations - Archive

Recent advancements in medical treatments have significantly enhanced the rates of recovery for numerous chronic illnesses. This progress has sparked growing interest in developing suitable statistical models capable of handling survival data that includes substantial cure fractions. The mixture cure model finds extensive application in analyzing survival data when there exists a cured subgroup. Standard logistic regression-based approaches for modeling the incidence part of the mixture cure model may suffer from poor predictive accuracy, especially in the presence of high dimensional covariates and/or non-linear covariate effects. To overcome this limitation, we propose the integration of distinct machine learning algorithms with …

Soil Biogeochemistry In Riparian And Restored Tidal Wetlands: Monitoring And Method Evaluation, Joseph Anthony Loffredo

Open Access Master's Theses

Although soils are essential for sustaining ecosystems, they are often overlooked in routine monitoring efforts during restoration projects. This thesis tries to address the interest in and challenges of measuring and monitoring soil biogeochemical properties and processes to evaluate restoration trajectories. In the first part of this thesis (Chapter 1), I monitored tidal marsh vegetation and soil biogeochemical responses to restoration by thin-layer placement (TLP) of dredged sediments in a greenhouse mesocosm study and a parallel field study at an active restoration site in southern RI. In the greenhouse, aboveground plant biomass in mesocosms treated with +5 cm and +10 …

Language Models For Rare Disease Information Extraction: Empirical Insights And Model Comparisons, Shashank Gupta

Theses and Dissertations--Computer Science

End-to-end relation extraction (E2ERE) is a crucial task in natural language processing (NLP) that involves identifying and classifying semantic relationships between entities in text. This thesis compares three paradigms for end-to-end relation extraction (E2ERE) in biomedicine, focusing on rare diseases with discontinuous and nested entities. We evaluate Named Entity Recognition (NER) to Relation Extraction (RE) pipelines, sequence-to-sequence models, and generative pre-trained transformer (GPT) models using the RareDis information extraction dataset. Our findings indicate that pipeline models are the most effective, followed closely by sequence-to-sequence models. GPT models, despite having eight times as many parameters, perform worse than sequence-to-sequence models and …

Recent Paleolimnological History Of Jackson Lake, Grand Teton National Park, Wyoming (Usa), Hillary Johnson

Theses and Dissertations--Earth and Environmental Sciences

This study utilizes a recently acquired, high-resolution CHIRP seismic reflection dataset and a deepwater sediment core to analyze the recent stratigraphy of Jackson Lake (Wyoming, USA). The western shoreline of Jackson Lake is situated adjacent to the Teton fault, a down-to-the-east normal fault that produces the spectacular high topography of Grand Teton National Park. The sediments of Jackson Lake are underexplored and consequently, their value as indicators of hydroclimatic and tectonic changes is unknown. Here, the sedimentary fill of Jackson Lake is explored as a natural archive of environmental change, specifically in reference to the influence of human outlet engineering …

Microstructural, Mineralogical, And Chemical Characterization Of The Handys Bend And Flax Creek Meteorites, Kentucky: Relevance For The Iron Meteorite Record, Ethan S.L. Davis

Theses and Dissertations--Earth and Environmental Sciences

Iron meteorites remain the only material view into planetary cores. Despite their scientific relevance, iron meteorites are relatively rare. In June 2021 and March 2022, the Kentucky Geological Survey received requests to identify two metallic specimens discovered in central Kentucky. The specimens were given the provisional names Handys Bend (3175.2 g) and Flax Creek (286.2 g). The goal of this project is to confirm meteoritic origin, characterize their structures and chemistry, assign genetic classifications, and examine potential relations to previous discoveries. Petrography was conducted using scanning electron microscopy. Mineral phases were examined using X-Ray diffraction crystallography. Chemical compositions were determined …