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Articles 481 - 510 of 52357
Full-Text Articles in Physical Sciences and Mathematics
Liquefying The Gulf Coast: A Cumulative Impact Assessment Of Lng Buildout In Louisiana And Texas, Robin K. Saha, Robert D. Bullard, Liza T. Powers
Liquefying The Gulf Coast: A Cumulative Impact Assessment Of Lng Buildout In Louisiana And Texas, Robin K. Saha, Robert D. Bullard, Liza T. Powers
Environmental Studies Faculty Publications
This report represents a substantial endeavor aimed at providing a critical examination of the complex interplay between fossil fuel development, environmental justice, and climate justice in a region of the United States that has an enduring legacy of economic injustice and environmental racism. In recent years, the rapid expansion of liquefied natural gas (LNG) infrastructure along the Gulf Coast has raised significant concerns regarding the environmental and social consequences.
Do You Know The Pangolin?: Analyzing Biodiversity Awareness And Attitudes, Ariel "Jazz" Holcomb
Do You Know The Pangolin?: Analyzing Biodiversity Awareness And Attitudes, Ariel "Jazz" Holcomb
Honors Theses
Understanding the impact education has on environmental knowledge and values is critical for knowing how we can promote pro-environmental awareness and attitudes. Thus, this study investigated how environmental education level influences awareness and attitudes on environmental issues, specifically the Biodiversity Crisis. Through a survey primarily utilizing Likert scale statements, the researcher evaluated the differences in knowledge and care levels between classes taking an introductory environmental science course, one class of environmental science majors and one for non-majors. One focus point of the course is the world’s most trafficked mammal, the pangolin, so this species was used as a focus species …
Screening Full-Sib And Half-Sib Families Of Chestnut Seedlings For Resistance To Cryphonectria Parasitica Using A Small Stem Assay And A Leaf-Disc Assay, Uma Plambeck
Honors Theses
Cryphonectria parasitica is the ascomycete fungus species that causes chestnut blight disease. Symptoms of chestnut blight include bark cankers and eventually the death of American chestnut, Castanea dentata. However, not all Castanea species are equally affected by the disease, and some Asian species appear highly resistant. The OALDS and SSA in this study aim to assist in screening for resistance to C. parasitica within a year. We investigated the effect of C. parasitica on three North American species, one European species, four East Asian species of Castanea, and nine full-sib families of TACF backcross hybrids. Our study used both a …
Examining The Relationship Between Manning's Roughness Coefficient And Stage, Henry Holtkamp
Examining The Relationship Between Manning's Roughness Coefficient And Stage, Henry Holtkamp
Biological and Agricultural Engineering Undergraduate Honors Theses
This paper uses LOESS regression to predict Manning's roughness coefficient to calculate flows in natural stream channels. Manning's roughness coefficient can introduce variability into Manning's equation, potentially destabilizing results. Utilizing LOESS to find n based on backcalculated n from collected discharge vs. stage information is the best way to acquire accurate Manning's roughness coefficient values at a variety of flows. Book values tend to drastically overestimate which can have wide-ranging implications for water allocation, flood management, maintaining environmental flows, and maintaining water quality.
Machine Learning And Geostatistical Approaches For Discovery Of Weather And Climate Events Related To El Niño Phenomena, Sachi Perera
Machine Learning And Geostatistical Approaches For Discovery Of Weather And Climate Events Related To El Niño Phenomena, Sachi Perera
Computational and Data Sciences (PhD) Dissertations
El Nino and La Nina are worldwide environmental phenomena brought about by repetitive changes in the water temperature of the Pacific Ocean. Even though the El-Nino impact focuses on a smaller area in the Pacific Ocean near the Equator, these developments have global repercussions, where temperature and precipitation are influenced across the globe, causing droughts and floods simultaneously. In this dissertation, we first derived a drought vulnerability index for the Nile basin, identifying regions with high and low drought risk under ENSO conditions. Next, we evaluated the coherence and periodicity of the ENSO signal to detect its implications on MENA …
Enabling More Efficient Solar Thermal Energy Production And Storage, Allan Wilson
Enabling More Efficient Solar Thermal Energy Production And Storage, Allan Wilson
Poster Presentations
Concentrated Solar Power (CSP) stores & transfers energy using a Thermal Energy Storage Fluid (EIA AEO 2022)
Innovative Rate Design As A Free Market Solution To Climate, Resiliency, And Economic Challenges, Brendan J. Moore
Innovative Rate Design As A Free Market Solution To Climate, Resiliency, And Economic Challenges, Brendan J. Moore
University of New Orleans Theses and Dissertations
A century-old problem of electricity rate design is cost-shifting between ratepayers (Wellinghoff, J. & Tong, J., 2015). A much newer cost-shifting example of great and increasing importance happens whenever ratepayer generated “renewable energy” is sold to the grid—all too often, this is accused of being unfairly rewarded (Ritchie, 2016). ProRate resolves both these concerns and ProRate can actually be derived simply from the premise of avoiding “all” cost shifts between ratepayers (Katz, CLEPm Rewards to Arrest Demand Cost-Shifting, 2019; Katz, CLEP5 Rewards to Arrest Energy Cost-Shifting, 2019). Another major problem with the Old Utility Model is the lack of price …
Environmental Factors Associated With Triploid Aspen Occurrence In Intermountain West Landscapes, James A. Walton
Environmental Factors Associated With Triploid Aspen Occurrence In Intermountain West Landscapes, James A. Walton
All Graduate Theses and Dissertations, Fall 2023 to Present
Polyploidy is common among plants and can contribute to physiological and morphological differences, altering how plants respond to environmental changes, promoting genetic diversification and even species radiation. Quaking aspen (Populus tremuloides), a keystone species associated with high plant and animal diversity is frequently found in mixed diploid/triploid populations in the Intermountain West. Triploid aspen carries an extra chromosomal copy, whereas the diploid type contains two chromosomal copies. High mortality rates and widespread population declines in aspen are of increasing concern in the Intermountain West, and often ascribed to changing climates and drought stress events. The goal of this …
The Effect Of Agrivoltaics On Irrigation Water Consumption In Central California, London Camba
The Effect Of Agrivoltaics On Irrigation Water Consumption In Central California, London Camba
Undergraduate Theses
An agricultural system where solar energy generation and agricultural systems are used together for mutual benefit, agrivoltaics reduces loss of water due to evaporation, particularly in drylands. Central California has faced extreme droughts, and water has become a scarce resource. However, the wide-scale use of agrivoltaics has been limited due to lack of knowledge about agrivoltaics and also the lack of funding for start-up agrivoltaics projects. Therefore, this research investigated the potential for agrivoltaics in Central California to reduce irrigation water consumption using a review of multiple crop studies using agrivoltaics to determine an optimal crop for agrivoltaics and a …
Greening The Green: Examining The Resource Use Of Golf Courses With Suggestions On How To Improve Their Sustainability, Kaelan Addison Lestock '24
Greening The Green: Examining The Resource Use Of Golf Courses With Suggestions On How To Improve Their Sustainability, Kaelan Addison Lestock '24
Honor Scholar Theses
Golf is a journey full of challenges, requiring each player to strive for precision, rather than merely a game of getting a small, dimpled ball in a cup hundreds of yards away in the fewest strokes possible The game is both physical and mental; it tests one’s focus, decision making, and resilience. Those who play competitively rarely feel as though they are competing against another player, instead their opponent is the course. And for those who play recreationally, the game can be a time to reconnect with nature, foster both old and new friendships, or enjoy the pursuit for perfection. …
Cultural And Environmental Change In A Period Of Westernized Tourism: Bali, Indonesia, Barbara Buck
Cultural And Environmental Change In A Period Of Westernized Tourism: Bali, Indonesia, Barbara Buck
ALL - Honors Theses
Dutch colonizers opened Bali for tourism at the beginning of the 20th century, and since that time tourism has led to changes in Bali’s culture, environment, and local resources. In the late 1900s, tourism grew to a new level, which resulted in a shift of industry control away from Balinese people. This project examines the problem of tourism from a social and environmental science lens. By compiling literature and science from various fields of study, this project aims to illustrate the complexity of Bali’s tourism problem in an interdisciplinary way. The lack of local control over tourism perpetuated and exacerbated …
Do Heat Waves Drive Natural Selection In Damselflies?, Adam Baranyk
Do Heat Waves Drive Natural Selection In Damselflies?, Adam Baranyk
Biological Sciences Undergraduate Honors Theses
Climate change has led to changes in both mean temperatures and temperature extremes over the recent years. These changes have had differential effects on animals throughout the world. Ectotherms depend on their external environment for thermal regulation, making them especially susceptible to temperature extremes. It is not yet clear whether there is a relationship between physical traits in ectotherms, and survivorship throughout a heat wave. That is, whether or not temperature extremes driven survival selection. In this study, a heat wave was simulated artificially using thermally regulated mesocosms at different temperatures (18°C, 22° C, 26° C, 30° C) with a …
Implications Of The 2023 Flood On The Lower Diamond Fork River, Ut, Christian J. Stewart
Implications Of The 2023 Flood On The Lower Diamond Fork River, Ut, Christian J. Stewart
Watershed Sciences Student Research
The lower Diamond Fork River is located on publicly accessible land owned by the Utah Reclamation Mitigation and Conservation Commission and the United States Forest Service. It is located a 30 minute drive away from the Provo-Orem Metropolitan Area and the stream runs parallel to the Diamond Fork Road, giving anglers convenient access to several miles of publicly fishable stream. The focus of this study is the lower Diamond Fork River between US Highway 6 and the Diamond Fork Campground, UT (Figure 1).
Opportunities For Urban Resilience To Climate Change: Understanding Local Climate Perceptions, Motivations, And Barriers To Green Infrastructure Use, Emmilene Berski
Opportunities For Urban Resilience To Climate Change: Understanding Local Climate Perceptions, Motivations, And Barriers To Green Infrastructure Use, Emmilene Berski
Department of Geography: Dissertations, Theses, and Student Research
Global climate change poses a substantial threat to cities in the United States, particularly through increases in flooding and extreme heat. Cities must adapt to these threats to preserve their residents’ livelihoods and prevent economic loss. One adaptation strategy is the implementation of green infrastructure (GI). The opportunity for GI to foster urban resilience to climate change necessitates a deeper understanding of the extent to which cities utilize GI as a strategy for local climate change adaptation as well as perceptions and motivations surrounding the use of GI at a local level. I sought to address this need through a …
Evaluation Of The Extent Of Floods In 2022 In Different Land Cover And Land Use Classes In Sindh Province, Pakistan Using Sentinel-1 And Sentinel-2 Imageries, Alina Shrestha
UNLV Theses, Dissertations, Professional Papers, and Capstones
Floods are one of the most frequent and most devastating natural disasters, which cause widespread destruction and pose significant risks to human life, infrastructure, and the environment. Advancement in remote sensing technologies and methodologies have demonstrated their efficacy in disaster-related applications, such as the detection, monitoring, and analysis of floods. This study explores the utilization of Synthetic Aperture Radar (SAR) and optical imagery for flood extent mapping and studying the extent of flood over various land cover and land use classes in Pakistan's Sindh province, utilizing the cloud computing power of Google Earth Engine. The change detection method identified extensive …
Mercury Biomagnification In Aquatic Food Webs Of Great Smoky Mountains National Park, Zachary Winston Clark
Mercury Biomagnification In Aquatic Food Webs Of Great Smoky Mountains National Park, Zachary Winston Clark
Masters Theses
Mercury is a widespread pollutant threatening human, fish, and ecosystem health on a global scale. Biomagnification concentrates mercury in upper trophic level organisms including predatory fishes, a primary route of dietary mercury exposure for humans. However, mercury biomagnification is not well understood in stream ecosystems, especially in places with no known point sources of contamination. A 2016 study revealed that Smallmouth Bass Micropterus dolomeiu mercury concentrations varied between three streams in Great Smoky Mountains National Park (GSMNP), Tennessee USA. However, the reason for this spatial variation in mercury concentrations is not understood. Our objectives were to (1) measure environmental and …
Evaluation Of Avian Use Of Agricultural Cover Crops During The Winter, Migration Stopover, And The Breeding Season In Tennessee, Brittany Panos
Evaluation Of Avian Use Of Agricultural Cover Crops During The Winter, Migration Stopover, And The Breeding Season In Tennessee, Brittany Panos
Masters Theses
The U.S. Department of Agriculture Natural Resources Conservation Service administers the cover crop program to provide technical and financial assistance to agricultural producers to sow herbaceous plant seeds to establish cover crops to protect agricultural fields from soil erosion during the non-growing season (late fall through spring). Soil retention and water quality benefits have been documented, but potential benefits for avian wildlife remain largely unknown. I used line-transect avian and vegetation surveys to examine use of cover crop fields by birds during the non-breeding period (winter), migration, and the breeding season. I compared avian use of cover crop fields with …
The Port Of San Diego's Maritime Clean Air Strategy: Enhancing Public Health With Innovative Clean Air Strategies, Gabriela Yamhure, Alexis Padilla
The Port Of San Diego's Maritime Clean Air Strategy: Enhancing Public Health With Innovative Clean Air Strategies, Gabriela Yamhure, Alexis Padilla
San Diego Regional Climate Collaborative
The Port of San Diego (The Port), established in 1962 under the Port act, is the Maritime agency that manages and stewards the thirty-four miles of coastal working waterfront along the San Diego Bay. The Port develops and promotes commerce, navigation, recreation, a healthy environment and fisheries around the San Diego Bay, contributes billions to San Diego’s economy, and is home to international cargo and trade operations. In a concerted effort to lessen greenhouse gas emissions impact of operations on local, often underserved communities, the Port developed and is implementing a Maritime Clean Air Strategy (MCAS), an update to the …
Assessing Sustainability Within The Brewing Industry: A Literature Review And Benchmarking Analysis., Elijah Thomas Miller
Assessing Sustainability Within The Brewing Industry: A Literature Review And Benchmarking Analysis., Elijah Thomas Miller
Electronic Theses and Dissertations
The goals of this study were twofold: to further examine sustainability within the brewing industry through a literature analysis across four academic journals, and a benchmarking analysis of a Louisville, Kentucky brewery’s resource consumption and emissions production. Publications related to the brewing industry were examined for the presence of sustainability keywords: “efficiency, sustainability, carbon footprint, climate change and greenhouse gas”. Benchmarking examined the local brewery’s primary production facility to determine their performance compared to other surveyed breweries pursuing sustainability across the country. Literature examination found noticeable discrepancies between the appearance of sustainability topics within article abstracts and their discussion within …
Bay Water Level Influences On Inundation And Morphological Changes Of A Semi-Connected Barrier Island During A Hurricane, Sydney D. Goodman
Bay Water Level Influences On Inundation And Morphological Changes Of A Semi-Connected Barrier Island During A Hurricane, Sydney D. Goodman
<strong> Theses and Dissertations </strong>
This research aims to identify flooding and erosion changes along a semi-connected barrier island system due to varying bay water levels during storm conditions. The numerical model XBeach is used to simulate Hurricane Michael conditions and the resulting inundation and morphological change near Tyndall Air Force Base (Tyndall AFB). The installation is located 12 miles southeast of Panama City Beach along the panhandle of Florida and is vulnerable to flooding due to its proximity to the Gulf of Mexico (GoM), Saint Andrew Sound and Saint Andrew Bay. A land bridge connects the barrier island to the mainland of Tyndall AFB …
Sustainable Accounting: The Benefits And Challenges Of Its Implementation, Collin Eckstein
Sustainable Accounting: The Benefits And Challenges Of Its Implementation, Collin Eckstein
University Honors College
This thesis is centered around the idea that sustainability is a necessary component within the world. Environmental, social, and governance (ESG) factors are key components of analyzing sustainable practices. Although accountants have historically focused on financial reporting, they now have the added function of sustainable accounting as environmental implications are an area of concern for companies. A substantial component of this thesis centers around analyzing how ESG factors contribute to an organization’s financial performance. It also observes how comprehensive sustainability reports impact investor decisions and examines the challenges that auditors face when providing assurance for sustainability initiatives. Furthermore, it examines …
Creating Interpretable Deep Learning Models To Identify Species Using Environmental Dna Sequences, Samuel Waggoner
Creating Interpretable Deep Learning Models To Identify Species Using Environmental Dna Sequences, Samuel Waggoner
Honors College
This research aims to develop an interpretable and fast machine learning (ML) model for identifying species using environmental DNA (eDNA). eDNA is a technique used to detect the presence or absence of species in an ecosystem by analyzing the DNA that animals naturally leave behind in water or soil. However, there can be millions of sequences to classify and the reference databases are sizeable, so traditional methods such as BLAST are slow. Convolutional neural networks (CNNs) have been shown to be 150 times faster at classifying sequences. In this work, we create a CNN that achieves 92.5% accuracy, surpassing the …
Development And Investigation Of Children's Manuscripts On Sustainable Agriculture And Place Based Interactions With The Land, Isabella Oliveira
Development And Investigation Of Children's Manuscripts On Sustainable Agriculture And Place Based Interactions With The Land, Isabella Oliveira
Honors College
The goal of this project was to develop an illustrated educational manuscript for children, on the topic of environmentally sustainable practices and developing an interactive relationship with the environment around them. The decision-making of the contents of the manuscript was based in research on environmental pedagogy, the history of land use, place-based identity and environmentalism, and sustainable land practices. All of the illustrations and photography in the manuscript were taken in Maine over my time spent here in college. This manuscript is meant to engage children with the environment around them by introducing them to simplified scientific concepts using references …
Comparing The Regulatory Effects Of Overexpressed Micrornas And Xenobiotic Drugs On Cell Cycle And Apoptotic Regulators In Pc-3 Cells, Tommie Johnson
Comparing The Regulatory Effects Of Overexpressed Micrornas And Xenobiotic Drugs On Cell Cycle And Apoptotic Regulators In Pc-3 Cells, Tommie Johnson
Dissertations (2016-Present)
MicroRNA was first discovered in C. elegans as small temporal RNA (stRNA) that does not code for protein. Since being discovered they have played a significant role in regulating gene expression at the post-transcriptional level. miRNAs are found in various organisms, and they bind to the 3' untranslated regions to inhibit translation and cause mRNA degradation. Some drugs are involved in cell cycle regulation such as Palbociclib, Ribociclib (LEE011), and Abemaciclib (LY2835219), that causes G1 arrest impeding cell proliferation. Cyclin D1 (CCND1) is supported by the cell cycle making it into a functional product. When undergoing a chemical reaction, the …
Analysis Of Circular Design Principles For The Sustainable End-Of-Life Management Of Renewable Energy Assets: Investigation Of Illinois And Germany Renewable Energy Policies And Programs., Samuel N. Nimaful
2024 Student Research and Creativity Conference
This paper presents a comprehensive analysis of circular design principles applied to the sustainable end-of-life management of renewable energy assets, focusing on the comparative study of renewable energy policies in Illinois, USA, and Germany. As the deployment of renewable energy technologies like solar panels and wind turbines expands globally, the question of their sustainable disposal becomes increasingly critical. This research delves into how circular economy approaches can be integrated into policy frameworks to ensure that these technologies are sustainable not only in their operation but also at the end of their lifecycle.
The study methodically reviews existing policies and programs …
Why Evidence-Based Hope Is Crucial To Salish Sea Recovery And Beyond, Dr. Elin Kelsey, Ginny Broadhurst
Why Evidence-Based Hope Is Crucial To Salish Sea Recovery And Beyond, Dr. Elin Kelsey, Ginny Broadhurst
Institute Publications
In April 2023 and March 2024, the Salish Sea Institute engaged hope scholar and thought-leader Elin Kelsey, for events with the common theme of sharing information about evidence-based hope and helping the audience apply that thinking to combat the pervasive doom and gloom narrative that persists about climate change and the environment in general.
The first event was a 2 ½ day Hope for the Salish Sea (HSS) intensive environmental leadership workshop specifically co-designed and led by Elin, Ginny Broadhurst, Director of the Salish Sea Institute, and Mavis Underwood of Tsawout Community, WSANEC Nation. The Salish Sea Institute also organized …
Water Sufficiency For Organismal Function In Dryland Critical Zones, Lindsey Dacey
Water Sufficiency For Organismal Function In Dryland Critical Zones, Lindsey Dacey
Open Access Theses & Dissertations
Water availability is crucial for organismal survival and growth in dryland environments, affecting both ecological interactions and carbon dynamics. The goal of this thesis is to develop soil water release curves (SWRCs) that link soil water potentials (Ψ) to soil water content (θ). Using the SWRCs, temporal soil water sufficiency curves are developed, which quantify the amount of time that dryland critical zones have enough water to sustain the physiology of organisms. These curves allow for effectively indicating water availability across different species, coverage types, and soil conditions, enhancing our understanding of water dynamics in drylands and contributing important parameters …
Investigating Changes In Surface Water Chemistry Across The Llano Uplift And The Balcones Fault Zone In Central Texas Using Strontium And Uranium Isotopes, Hao Tuan Pham
Open Access Theses & Dissertations
The landscape of central Texas is shaped by over one billion years of Earth's history. An array of lithology lies within central Texas along with two large geological structures. The Llano Uplift, characterized by Proterozoic metamorphic and igneous rocks dating back to 1.37 billion years ago, is encircled by Paleozoic and Mesozoic sedimentary rocks. To the southeast of the Llano Uplift lies the Balcones Fault Zone (BFZ), an extensional structural system of mostly normal faults that delineates the transition between Paleozoic-Mesozoic sedimentary rocks and Cenozoic sedimentary cover, which are influential to the regional hydrogeology. This study investigates the hydrogeological dynamics …
Analyzing The Impact Of Oil And Gas-Contaminated Fluids On Soil In Eddy And Lea Counties Using Sequential Extraction, Mary Adu-Gyamfi
Analyzing The Impact Of Oil And Gas-Contaminated Fluids On Soil In Eddy And Lea Counties Using Sequential Extraction, Mary Adu-Gyamfi
Open Access Theses & Dissertations
The study investigates the impacts of oil and gas-contaminated fluids on soil within the context of Eddy and Lea Counties in New Mexico, the United States. The increase in oil and gas operations has led to enormous wastewater production that is handled, stored, and transported, leading to thousands of spills yearly. The continuous and accidental release of this wastewater poses several risks to the environment due to its high levels of hazardous pollutants. Several studies were conducted on how to reduce the contaminants; however, the impact caused on the environment and the fate of the spilled fluids is unclear due …
Resource Scarcity Caused By Environmental Changes: Driving Factor In Terrorism Attacks In Afghanistan, Pakistan, Syria, Amaris Bustamante
Resource Scarcity Caused By Environmental Changes: Driving Factor In Terrorism Attacks In Afghanistan, Pakistan, Syria, Amaris Bustamante
Open Access Theses & Dissertations
Climate change, resource scarcity, and terrorist attacks are ever-growing crises that disproportionately impact different states. They are crises that can impact the stability and resilience of humanity in the following decades if they are not addressed and mitigated. This study addresses the impact of resource scarcity caused by climate change that can then serve as a driving force in terrorist attacks in climate-sensitive and conflict-prone states. The objective of this mixed-methods study is to identify the correlation between climate changes that lead to resource scarcity such as rainfall and surface temperatures with terrorist attacks when taking into consideration other demographic, …