Digital Commons Network^™

Molecular And Hybrid Catalysts For Selective Hydrodeoxygenation Of Lignin Model Compounds, Jacob G. Tillou

Theses and Dissertations

Lignin is a highly aromatic, branched polymer and could be utilized as a renewable source of liquid fuel. The advent of “lignin-first” depolymerization processes have allowed for the high-yield isolation of oxygenated aromatic monomers from lignin. These oxygenated aromatic compounds are lower in energy and stability than their deoxygenated counterparts. Selective deoxygenation of these compounds would result in stable, higher value liquid fuels. Using molecular catalysts, selective deoxygenation, or hydrodeoxygenation (HDO), of lignin-derived compounds in the presence of hydrogen is possible.

Immobilization of these molecular catalysts on metal oxide surfaces eliminates the possibility of bimolecular decomposition and allows for easier …

Parametric Bamboo, Dominic Reilly

Bachelor of Architecture Theses - 5th Year

This thesis project explores the potential of using bamboo as a sustainable material in building parametric designs. The construction industry has a significant impact on the environment, and the use of sustainable materials in architecture is becoming increasingly essential. Bamboo is a versatile and sustainable material that has been used for centuries in various cultures worldwide. Bamboo is a fast-growing grass that can grow up to 91 cm per day and matures in just three to five years, making it an excellent alternative to traditional building materials like wood and synthetics. The project aims to investigate the properties of bamboo …

Photovoltaics And Battery-Based End-To-End Direct Current Sustainable Power Networks- Concept, Design, And Control, Vishwas Powar

All Dissertations

The consequences of climate change have emphasized the need for a power network that is centered around green, low-cost, and renewable sources of energy. Currently, photovoltaics (PV) and wind turbines are the only two technologies that can convert renewable energy from the sun and wind, respectively, into large-scale power for the electricity network. This dissertation aims to provide a novel solution to implement direct current-based architecture for PV generation coupled with lithium-ion battery storage in an efficient and sustainable manner. Such a power network can enable efficiency, reliability, low cost, and sustainability with minimum impact on the environment. The first …

Design Of Sustainable & Affordable Housing For Disadvantaged Communities In Nicaragua, Guillermo Terán

Civil, Environmental and Sustainable Engineering Senior Theses

Addressing Nicaragua's urgent housing needs, this project transforms a conventional CMU block design into a sustainable and affordable model using local, structural bamboo and adobe plaster. It includes appropriate member size connections, local-code compliant construction drawings, cost estimation and logistics, offering an eco-friendly, affordable housing solution for local communities. The scope of this project can be emphasized with the three words from the project title which are design, sustainable & affordable. The design aspect of this project involved producing detailed architectural and engineering drawings for the housing model, incorporating structural design to ensure the safety, stability and durability of the …

Improvements Of Hybrid Ac/Dc House Prototype, Arden Abude

Electrical Engineering

This is an iteration from previous designs of the Hybrid AC/DC House with a systematic addition of a portable AC power supply unit. This iteration for the Hybrid AC/DC House is an innovation of independence for sustainable housing solutions. It will serve as an alternative for rural communities needing power to rely on self-sustainable microgrids rather than large-scale AC electric grids. The addition of a portable AC power supply would allow the microgrid to remove its reliance on AC power from the larger grid and would elevate the system to complete energy independence. The microgrid has DC power generated from …

Mindful Leadership And Climate Action, Matthew Law

Mindfulness Studies Theses

Organizations must get serious about reaching the goals for addressing Climate Action outlined in the United Nations Sustainable Development Goal (SDG)13. The problem to solve is how the leaders who created the climate issues can be the leaders to make climate action happen. The development of mindful leaders within an organization is the answer to the problem. Mindful leaders are developed not only with the Inner Development Goal (IDG) framework which is developed to align and support the 17 SDGs of the United Nations. The development of mindful leaders comes from ancient and modern practices that draw from Buddhism, secular …

Sustainable Leadership During Turbulent Times, Paul Marietta

Dissertations and Theses

Teachers, administrators, and staff in schools are leaving the profession at unprecedented rates. The principal pipeline has significantly decreased in the past years and our public school system is at a breaking point. Now more than ever, we need to focus on sustainable leadership during turbulent times and helping the organization, students, families, teachers-and also their leaders-thrive. This dissertation proposal follows the Portland State University (PSU) multi-paper format which comprises a compilation of three papers in a journal article style format, with sole or multiple authors, and although PSU policy does not require it, the topic of the papers in …

Life Cycle Assessment Of A Hemp-Based Thermal Insulation Panel, Kara Davis

WWU Graduate School Collection

Buildings have a monumental impact on the environment and the economy and account for about 40% of energy consumption, greenhouse gas emissions, and materials entering the economy. Life cycle assessment (LCA) is a tool for quantitatively evaluating the environmental impacts of a product throughout its life span commonly applied in the building and construction sector. While past efforts have focused on reducing operational energy and carbon, attention has shifted towards embodied energy and carbon as buildings become more energy efficient. This graduate thesis applies the LCA framework and investigates the life cycle environmental impacts of a hemp-based thermal insulation panel …

Landscape Design That Enhances Socialization And Community Through Climate Resilience, Guidelines For North Texas Universities., Melissa N. Brown

Landscape Architecture Masters & Design Theses

Landscape architects must balance social, economic, and environmental considerations while creating places that people will love. And, in the words of American Society for Landscape Architects Fellow Mary Margaret Jones: “If we don’t make places people love, they won’t be taken care of”. (ALSA Interview, n.d.) Consideration for the user experience will result in spaces that people are more likely to love.

The growing student population at the University of Texas at Arlington means that every space must be used to its full potential. The green and open spaces on a university campus are more than circulatory routes between buildings. …

Sustainable Packaging For Sundae School, Emiko L. Visscher

Graphic Communication

Sundae School is a relatively new and creative brand producing cannabis products and smoke wear clothing. Sundae School has made an impression within the market due to their strong brand identity that translates through their packaging and design choices. I have decided to create two versions of an alternative package design for their line of Mochi gummy edibles. Their current packaging is purposeful, but I plan to design focused around minimizing packaging waste and utilizing sustainable packaging materials while keeping their brand identity at the forefront.

Rapid Prediction Of Phonon Density Of States By Graph Neural Network And High-Throughput Screening Of Candidate Substrates For Wide Bandgap Electronic Cooling, Mohammed Saif Ali Al-Fahdi

Theses and Dissertations

Machine learning has demonstrated superior performance in predicting vast materials properties. However, predicting a continuous material property such as phonon density of states (DOS) is more challenging for machine learning due to the inherent issues of data smoothing and sensitivity to peak positions. In this work, phonon DOS of 2,931 inorganic cubic structures with 63 unique elements from the Open Quantum Materials Database are calculated by high precision density functional theory (DFT). With these training data, we build an equivariant graph neural network (GNN) for total phonon DOS of crystalline materials that utilizes site positions and atomic species as input …

Lithium Extraction From Aqueous Solution Using Magnesium Doped Lithium Ion-Sieve Composite, Ujjwal Pokharel

Civil & Environmental Engineering Theses & Dissertations

This study focused on the development of a magnesium doped ion-sieve composite to extract lithium from an aqueous solution using adsorption process. The extraction process will provide a sustainable alternative to the currently practiced solar evaporation/concentration method which is very slow (takes 24 months) and water intensive. Currently, most of the lithium in the world comes from the mining of lithium or from the evaporative extraction process from the brine. Additionally, the Salton Sea area geothermal brines are recognized as potentially important domestic sources of lithium. Lithium concentration in geothermal brines from the Salton Sea area is reported to be …

Chef Sensory Perspectives And Consumer Acceptance Of Fermented Green Crab Sauce, Bryson J. Mcdonough

Electronic Theses and Dissertations

The European green crab (Carcinus maenas) is an invasive species responsible for immense ecological and economic damage along the Northeastern coast of the United States. Despite multiple population control methods explored, intensive indiscriminate trapping has been the only effective approach However, this type of trapping is currently not financially viable because of the low price and demand for hard-shell green crabs due to their small size and difficult-to-extract crabmeat.

To address this issue, researchers have investigated green crab sauce, a fermented condiment inspired by fish sauce. This umami-enhancing condiment has the potential to raise hard-shell green crab value …

Atom Economical Reactions Of Terpenoids And Post-Consumer Plastics With Sulfur, Charini Maladeniya

All Dissertations

The production of Ordinary Portland Cement (OPC) and its uses have a complicated environmental impact, which is influenced by infrastructure development and building operations as well as CO₂ emissions, which account for 7% of all worldwide CO₂ emissions. Due to the increasing population, production is still ongoing. The search for cement and construction materials produced with zero to low CO₂ emissions is therefore continuous. Finding recyclable, CO₂ gas-free biocomposites with high sulfur content that can rival the mechanical properties of popular building supplies like Portland cement is the primary objective of the research discussed in this …

The De-Centering Of Architecture, Uthman Olowa

Masters Theses

Housing insecurity is arguably the most pressing issue in our society. In the United States, home/land ownership has been the primary source to generate wealth. Yet, so many people are disproportionately affected and denied access due to this system. Historically, it has also been difficult for people of color to own their own property and receive adequate housing in viable neighborhoods. A person’s ability to obtain quality housing affects other areas of their lives; it affects their ability to attend school in a certain district, and their proximity to work, healthcare, and entertainment. Interventions from both the public and private …

Investigation Of Natural Pozzolans: Analyzing The Practicality Of Natural Pozzolans As A Partial Substitute For Cement In Grout Production, Jadyn I. Breien, Andrew J. Baro, Logan T. Marino

Architectural Engineering

This senior project aims to investigate whether natural pozzolans are more sustainable than fly ash and a sufficient substitute for cement in the production of grout. By following the intent of the ASTM (American Society of Testing and Materials) standards, a conclusion will be made to determine if natural pozzolans can contribute comparable strength in compression. The objective is to prove that natural pozzolans should be utilized in the production of grout rather than alternatives such as fly ash because it can provide similar strength while being more economical and more sustainable.

Space Efficiency By Way Of Modular Furniture: Working From Home In An Era Of Shrinking Housing, Robert Deane

Theses

In the current housing market, rental prices are increasing and the size of apartments are shrinking. This combined with increased demand from increasing urbanization and jobs moving to work-from-home arrangements, renters face challenges in fitting their lives into their smaller living spaces. One of the most common challenges reported is a lack of working space in the home. As a means to address this, I designed a system of modular parts that can be built into a variety of desks, providing a customizable work-from-home environment. The system will allow consumers to purchase precisely what they need or can afford, with …

The Dwelling And The Shed: Redefining The Homestead, Ryan Mattox

Bachelor of Architecture Theses - 5th Year

The homestead is the frontier of exploration. It is the place that shows people can take care of themselves through self-sufficient means. This place also looks at making a more sustainable population. That is partly due to the individual needing to take care of the environment around themselves so that the environment can provide for them.

My thesis project will look to create a technological and sustainable residential module that can be replicated and modified to create community based on self-sufficiency by means of sustainability. To achieve this goal, my thesis will look at combining the architectural elements of the …

The Bahay Kubo Alternative, Reesa Winters

Bachelor of Architecture Theses - 5th Year

This thesis “The Bahay Kubo Alternative” aims to create an architectural solution that successfully provides alternative building methods, materials, planning, and strategy for current and future stilt homes in the Philippines.

The goal is to increase the longevity of stilt homes and give the residents a sense of ownership and belonging. Moreover, it incorporates adaptable design strategies that take future community growth as well as health & wellness into consideration. This thesis proposes modular stilt homes with alternative structures and designs to prepare the residents for natural disasters and provide them with cleaner environments.

Slums are a sad result of …

Desert Safe Haven, Deja Dortch

Bachelor of Architecture Theses - 5th Year

The purpose of this thesis is to inform on the materials, technologies, spaces and structure needed to architecturally and sustainably achieve human comfort and create a mother nature-proof safe haven in the becoming harsh climate of the USA. All the while implementing minimum HVAC, using primarily passive and active systems towards a net zero home. Studies have shown there is a real threat with the rate in which the climate is changing. Temperatures are rising worldwide which is causing droughts, more frequent fires, glaciers to melt, sea levels to rise, more severe hurricanes and storms, etc. Sustainability is a way …

Individual For Housing, Hayden Tyler Dill

Bachelor of Architecture Theses - 5th Year

According to the Pew Research Center, nearly half of the adults in America are unmarried and half of the population has no interest in joining the dating market. It’s a lonely tale for many, but humanity learns to adapt if we cannot overcome. Let us not make homes for individuals an afterthought. To help solve this problem, I propose to evolve an old typology focused on individuals living in a community setting.

The Metabolism movement focused on biological growth with an emphasis on modular and capsule designs. As Kisho Kurokawa says, architecture like cells is “part of a continuous natural …

Sustainable Approaches To Photo-, Thermo-, And Electro-Chemical Reactions Of Amines, James David Sitter

Theses and Dissertations

In recent years, sustainable routes for chemical synthesis have garnered renewed interest. As the world continues to fight pollution and rising costs, it is imperative that new routes of synthesis that continuously fight the issues of pollution and waste are discovered, defined and explored. While traditional synthesis routes that require energy input typically require the burning of fossil fuels to produce heat, the amount of resources that go into the production of these fossil fuels and the sequestration of its waste to minimize its impact on the carbon footprint is enormous. Furthermore, sustainable chemistry research aims to decrease and minimize …

Strategies For Sustaining Success In Small Businesses In Nigeria, Mina Johnson-Hart

Walden Dissertations and Doctoral Studies

Enterprise owners in Nigeria who need more entrepreneurial skills and an understanding of the business environment may need help sustaining their market share. Nigerian small business owners are concerned with the need for entrepreneurial growth strategies because it could reduce business profitability sustainability and lead to entity failure. Grounded in the entrepreneurial orientation theory, the purpose of this qualitative multiple case study was to explore strategies Nigerian small business owners implement for sustaining success beyond 5 years. The participants were three small business owners in the professional services sector who developed strategies for sustaining success beyond 5 years. Data were …

Sustainable Community Development Case Study Of Collaboration, And Participation Between A Nonprofit Organization And Governance, Nicholas L. Brooks

Walden Dissertations and Doctoral Studies

AbstractThe Lake Calumet Task Force (LCTF) is a nonprofit community organization that has developed the Green Economic Industrial Corridor (GEIC) plan. The GEIC plan presents the socio-economic needs of Lake Calumet’s communities and proposed improvements to the natural and built environment, which have been neglected for decades. There was a gap in knowledge regarding collaboration and formation of partnerships for the design and implementation of sustainable development strategies across other key stakeholders. The qualitative case study explored how LCTF can combine principles of cooperation, partnership, and participation, with the local governmental agency’s design and implementation strategies, to enlarge upon the …

Understanding The Circumstances That Contribute To Teacher Retention And Attrition In An Urban School District And The Impacts Of Financial Incentives On Teacher Retention, Meshelley Sams

Theses and Dissertations

This study is aimed at understanding the circumstances that contribute to teacher retention and attrition in urban schools in the Southwestern United States. Harris et al. (2019) reported that at the national level, 16% of all teachers attrit yearly. Attrition contributes to the increasing teacher shortage problem that many districts face. The purpose of the study, guided by Chris Argyris’ organizational theory, examined the circumstances that contribute to the attrition of highly qualified teachers and the extent financial incentives are linked to the retention of highly qualified teachers. This qualitative phenomenological study involved 9 teachers, interviewed with a researcher designed …

Barriers And Opportunities To Sustainable Urban Agriculture: The Case Of Louisville, Kentucky., Sait Sarr

Electronic Theses and Dissertations

As the urban populations continue to increase, food insecurity will continue to affect urban residents as well, depriving them of access to abundant and nutritious food. This has captured the attention of many policymakers, urban planners, nonprofits, grassroots movements, and other stakeholders. As a result, there is growing interest in developing new sustainable strategies and policy measures that improve food security through the promotion of sustainable urban agriculture. More than 100,000 Louisville residents, of which 20% are from West Louisville, do not have access to adequate and nutritious foods, and are at a higher risk of developing health issues. West …

Lumira, Taylor Ann Magon

Liberal Arts and Engineering Studies

As LAES moves into the new Frost Center, we want to showcase the capabilities of its Expressive Technology (ET) Studios space with an interactive experience in hopes to collaborate, innovate, and spark ideas for the future of the program.

Sustainable Concrete And Its Current Stance In The Construction Industry, Morgan Hailey Gawle

Construction Management

Concrete is currently the second most consumed resource used in the world and the production of this material, mainly the production of cement, contributes to a little over 8% of carbon dioxide emissions globally. The concept of sustainable concrete is rapidly surfacing within the construction industry as environmental issues and concerns like global warming and climate change continue to worsen. Scientists have been and continue to consistently conduct studies to test if sustainable concrete is a possible solution to reducing carbon dioxide and greenhouse gas emissions that come straight from the construction industry. But some construction companies have concerns that …

Functionalized Biochar Electrodes For Asymmetric Capacitive Deionization, Hellen Stephanie

Theses and Dissertations

Electrosorption-based capacitive deionization (CDI) has become a viable process for brackish water desalination and defluoridation. In this study, activated Douglas fir biochar is used as a low-cost electrode material with adsorption capacity comparable to activated carbon obtained from biomass precursors. Adding functional groups to the activated biochar enhanced salt removal capacity, providing cation and anion selectivity. The functionalized electrodes were prepared by Nafion, titanium isopropoxide, and p-phenylenediamine treatment, respectively, which introduced sulfonate, titanium dioxide and amine functional groups to the electrode surface. These modification methods are versatile and can be easily performed without sophisticated laboratory environment. Modified biochar electrodes …

Equity In Healthcare Design: Sustainable Placemaking Interventions For Refugees And Displaced Communities, Eunji You

Bachelor of Architecture Theses - 5th Year

Since 1990, the city of Clarkston has brought thousands of refugees from Asia, Africa, South America, and beyond. Now, roughly half of the population constitutes refugees that represent 60 different languages and nationalities. In Clarkston, a sustainable healthcare facility is integral for the design of a family-centered medical facility to promote health equity by providing access to care at all levels. Infant mortality is rising amongst minority groups, and advanced care for adults and children of all ages and disabilities in low-income areas is becoming more inaccessible. The design of the healthcare facility aims to strengthen racial-ethnic minority groups in …