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.
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Showing 1 to 20 of 76 for “"Alternative materials"”.
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Identifying and Reducing Variability, Improving Scaffold Morphology, and Investigating Alternative Materials for the Blood Vessel Mimic Lab Electrospinning Process
… and evaluate more flexible polymers as potential alternatives for electrospun BVM scaffolds.</p> <p>In order to accomplish these aims, first, several BVM and outside literature images were taken and evaluated with current and prospective fiber diameter techniques, and with 2 prospective pore area …
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A technical and economic analysis of structural composite use in automotive body-in-white applications
Alternative materials technologies promise increased design flexibility, improved damage resistance and lighter weight (among others) over the steel designs that are currently in production. To understand why such features are desirable and why a composite intensive vehicle may become an attractive …
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Analysis of the thermal hydraulics of a multiphase oxygen production reactor in the Cu-Cl cycle
… In the experiments, lower temperature alternative materials, such as helium gas at 90°C and water at 22°C, are used to mimic the actual materials of the oxygen gas at 600°C and molten CuCl at 530°C. From the experimental studies, new forms of empirical equations are formulated for the …
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Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press
… commercial developments have created a need for alternative materials and methods for imparting oil/grease resistance to paper and/or paperboard used in packaging. The performance of a novel grease resistant functional coating comprised of polyvinyl alcohol (PVA), sodium tetraborate pentahydrate …
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"Pliable and Easily Shaped": History, harms, and regulations of plastic in the United States
… economy, wherein a product is developed with raw materials, used, and then discarded. Because there are many applications for plastic in today’s society unparalleled by alternative materials, removing all or most plastic use from daily life in the United States is unrealistic. Nevertheless, …
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Breakwater Enhancement: Redesign Tetrapod Structures for Resilient Coastal Environments and Marine Ecosystem Rehabilitation
… computational design, digital fabrication, and alternative materials to improve tetrapod structures. The goal is to transform them into a more sustainable and ecologically friendly coastal protection solution. Through mitigating carbon emissions, enhancing mobility, and reducing ecological …
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Development of a two-axis cyclic loading device for mechanical testing of glenoid component fixation
… designs and allows for controlled testing of alternative materials for prosthesis advancement to lessen the stresses that produce the rocking horse phenomena.
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Optische und elektrische Spektroskopie an alternativen Absorbermaterialien für organische Solarzellen
… are shown to demonstrate, in principle, if these materials and material combinations are suitable for organic solar cell applications. An optimal post-heat treatment of the PEDOT:PSS interfacial layer in the organic solar cell is shown. A part of this thesis is concerned with studies of different …
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Effect of Time on Gypsum-Impression Material Compatibility
… introduced irreversible hydrocolloid (alginate) alternatives. The test materials were Alginot® (Kerrâ„¢), Position Penta Quick® (3M ESPEâ„¢) and Silgimix® (Sultan Dentalâ„¢). The irreversible hydrocolloid impression material, Jeltrate Plus antimicrobial® (Dentsply Caulkâ„¢) served as the …
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Tequio y Tierra: Regenerative Architecture in Oaxaca
This thesis explores regenerative materials and earth construction in marginalized Oaxaca, Mexico. The Mezcal industry – which has exploded in recent years due to celebrity-fueled popularity – is causing serious ecological damage due to industrial-scale monoculture and improper disposal of its …
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Investigation into the improved dispersion of nickel oxide over the surface of SOFC tubular anodes
… of improving these issues by investigation of alternative materials (carbon, graphite, flour) along with alternative processing methods. The porosity forming agent of the SOFC anode was investigated to establish the most effective material to improve nickel dispersion. The effect of powder …
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Nanomechanical systems with small dissipation
… dissipation are surface chemical engineering, alternative materials testing, and geometric optimization through nanofabrication. Reduction in non-contact friction between a vibrating nanomechanical resonator and a surface, spaced nanometers away from the latter, was achieved by using a diamond …
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Environmental, operational and financial sustainability of packaging methods in delivery businesses
… to sustainable packaging. The first area is materials innovation where we will analyze alternative materials suitable for retail delivery packaging. The second area involves waste elimination through reducing packaging material use and reusing of packaging materials through a returnable tote …
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Design and optimization of a play-free rotary magneto-rheological fluid brake for enhanced performance and durability
… user satisfaction over extended use. Among the materials tested, 304 stainless steel exhibited the least mechanical play, whereas titanium and ceramic materials showed higher wear rates. Ferromagnetic steel did not significantly affect torque performance, suggesting potential for further …
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Child-ish Books: Presenting Zines and Artist Books for Kids
… books, and a publishing branch to produce alternative materials for and by children.</p>
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Automating radiation damage studies of materials irradiated by high-energy protons using multiphysics simulations
… radiation and corrosion damage in nuclear materials has become increasingly important in reactor design considerations. However, running irradiation damage studies in nuclear reactors is expensive and time-consuming. Thus, accurate, quick simulations have become more attractive to …
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Design of a Cyclic Sliding, Dynamically Loaded Wear Testing Device for the Evaluation of Total Knee Replacement Materials
… been used to evaluate total knee replacement materials are unidirectional and/or apply only static force. This thesis presents an alternate wear testing device capable of simulating the most prevalent motions of the knee, and applying physiologically-correct loading to the material interface. …
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Investigating the durability of structures
… wood, steel and concrete and the effect of using alternative materials on cost and quantity of material used. This further enhances the understanding of the impact that the design choices make, during the early stages of the project, on the overall durability of the structure. Keywords: …
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The industrial development of transparent conducting coatings by a Sol-Gel route
… search for more efficient deposition methods and alternative materials. This work represented the early stage development of industrially applicable coatings, hence the work was performed with a supply chain partnership to facilitate commercial uptake. Sol-gel technology was used to facilitate …
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Alternative Foam Treatments For The Space Shuttle's External Tank
… Accident Investigation Board did not evaluate alternative materials but certainly highlighted the need for change. The majority of the research previously concentrated on improving the design and/or the application process of the current materials. Within recent years, some research and testing …
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