Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 24 for “"Critical Materials"”.
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New Fluorescence Sensors for Critical Materials
Production of critical raw materials such as rare earths and lithium will not meet the projected requirements for either growing world demand or to enable the green energy transition by 2050. Increasing the supply of these materials will require novel technology developments to improve efficiency …
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Securing the Future: Critical Materials Policies for the US Energy Transition
… need for a sustainable and secure supply of critical materials. This oversight threatens the success of the nation’s sustainable transition due to limited resilience and dependencies on geopolitically, environmentally, and socially sensitive international sourcing, particularly from China. …
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Optimizing the Supply Chain Design for Sourcing and Supply of Critical Materials
… a team was created to then manage the supply of critical materials. These materials are typically single sourced and used commonly across multiple AZ sites and brands signifying that a disruption could impact patient supply and AZ revenue across multiple brands. This thesis focuses on providing a …
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The reconfiguration of the global supply chains of critical materials: behaviours and outcomes in the cobalt sector
… explores what shapes the supply chains of ‘critical materials’, metals and minerals which are of high economic importance and are at risk of supply shortage. The research focusses on cobalt, a metal mined mostly in the Democratic Republic of the Congo (DRC) and consumed mostly in the …
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Process Development and Techno-Economic Analysis for the Recovery of Rare Earth Elements and Critical Materials from Acid Mine Drainage
… are two elements with no known substitutes in critical applications and with no domestic or allied sourcing available. These elements are currently mined by in-situ leaching of ion-absorbed clays, mostly from illegal operations in Myanmar financed by Chinese companies. The demand from both …
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A Study of the Effectiveness of Nitrogen, Manganese, and Copper as Substitutes for Nickel in Low-Chromium Stainless Steels.
… and the Korean War. Historically, the issue of a critical materials policy by the United States was not addressed until shortages of materials hindered the manufacturing capabilities of industry. However, the United States has recently begun to acknowledge that there is another potential critical …
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Values in Four Selected British Novels Commonly Read in American Secondary Schools
… methods classes, bibliographies, and other critical materials on adolescent reading revealed that the four most commonly taught British novels in American secondary schools are Brave New World, Lord of the Flies, 1984, and Great Expectations. These four novels were selected for examination …
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Assessing byproduct mining and metal recycling as indicators of material criticality
… agree that the future availability of a set of 'critical materials' is an issue of global concern. However, assessments of material criticality are often overly general, leading to excessive concerns by policy makers and market participants. A quantitative and detailed investigation for supply …
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Strategic Transformation Trends within Automobile Supply Chains in the Post-Pandemic Era
… such as safety stock increases, dual-sourcing critical materials, and enhanced supplier collaboration. Organizational adaptations further bolstered these transformation initiatives, fostering flexibility and instilling a resilience-centric mindset. Furthermore, this study examined talent …
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Regional Market Dynamics: A Marginal Pricing Approach to Metals Market Modeling
… renewable energy technologies depends heavily on critical minerals, such as copper, lithium, and nickel. Experts predict that the demand for copper will soon exceed current supply, potentially creating a substantial supply-demand gap in the coming decades. To mitigate this gap, governments …
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Fundamental Studies on the Extraction of Rare Earth Elements from Ion Adsorption Clays
Rare earth elements (REEs) are critically important for high-tech, renewable energy and defense industries. However, rare earth minerals (REMs) are stable compounds, requiring aggressive conditions to decompose them for their extraction and use. One exception is the ion-adsorption clays (IACs) that …
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Multiscale development of electrochemical separations: from molecular design of redox-moieties to interfacial characterization and process simulation
… separations challenges, such as the recovery of critical materials from low-grade sources, the environmental remediation of trace pollutants from water, and the improvement of downstream separations in chemical manufacturing, highlight the need for novel approaches with lower energy consumption, …
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Scottish television comedy audiences
… current television comedy is poorly served by critical literature beyond notions of genre although this field of study too fails to indicate significant contemporary permeabilities between comedy sub-genres, and between comedy and other kinds of leisure shows. The second chapter explores …
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Analysis of the impact of automaker strategies on lithium price elasticity using a novel bottom-up demand model
… an understanding of the demand and supply of key critical materials, materials with a high risk of supply chain disruption, is essential. There are key gaps in understanding how automaker electrification strategies will influence materials demand over time. This presents materials suppliers with …
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A very British spectacle? : critical reception of the fantasy genre within contemporary British cinema
… British film and fantasy are influenced by the critical ‘writing machine’, which informs existing tensions between aesthetics, genre and film production, and also wider meanings attached to ideas around national identity and representation. However, this study argues that such discursive …
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Modeling mining economics and materials markets to inform criticality assessment and mitigation
Conventional criticality-assessment methods drawn from the existing literature are often limited to evaluations of scarcity risks, or rely on price as an indicator of criticality. Such approaches, however, are ill-suited to a firm's material procurement planning. A simulation tool - the m:5 model - …
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Metal Oxide Semiconductors for Solar Energy Harvesting
… is that it is expensive, primarily from the materials: silicon) used in building the cells. Metal oxide semiconductors are an attractive class of materials that are extremely low cost and can be produced at the scale needed to meet widespread demand. An industrially attractive thin film …
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The impact of coating architecture on the hardness, friction and wear resistance of hard and tribological nanocomposite coatings
… were developed. These systems revealed how critical materials selection can be in the determination of a coating's architecture, and how carbide-silver films can be used to provide low friction and high wear resistance in vacuum applications. For instance, a titanium carbide-silver film (15% …
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Redox-Mediated Processes Toward Modular Electrochemical Systems
… methods of storing energy or producing critical materials are increasingly coupled to renewable electricity generation. To enable such a future, it is imperative that we have strong foundational understanding of electrochemical reactions that are useful to our needs. Redox flow batteries …
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Concentration and Recovery of Rare Earth Elements from Eastern US Coal Refuse
… making them a potential resource for these critical materials. The approach employed in this research focused on the concentration and extraction of REEs from fine coal refuse derived from various preparation plants in the Appalachian coal basin of the United States. Initial efforts in this …
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