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 33 for “"Mass Reduction"”.
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Biological detection by means of mass reduction in a suspended microchannel resonator
… channel. I introduce the concept of detecting mass subtraction as a new approach, rather than the conventional detection of mass addition. In a model implementation scenario of this approach, a mass-intensifying tag bound to a small ligand molecule will be equilibrated with surface-immobilized …
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Lightweight friction brakes for a road vehicle with regenerative braking. Design analysis and experimental investigation of the potential for mass reduction of friction brakes on a passenger car with regenerative braking.
… life and, more significantly, reduced brake mass and minimised brake pad wear. In this thesis, a mathematical analysis (MATLAB) has been used to analyse the accessibility of regenerative braking energy during a single-stop braking event. The results have indicated that a friction brake could …
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Task-Based Mass Optimization of Reconfigurable Robotic Manipulator Systems
… develops a method for implementing task-based mass optimization of modular, reconfigurable manipulators. Link and joint modules are selected from a library of potential parts and assembled into serial manipulator configurations. A genetic algorithm is used to search over the potential set of …
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Enzyme diffusion and cellulose breakdown in the bioremediation of medical waste
… in maximum mixable solids concentration and the mass reduction of the waste due to cellulase activity. The addition of cellulases to the slurry more than doubled the waste concentration which could be agitated and reduced the agitator shaft power by as much as 50% when compared to the simulated …
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Design and development of a composite automotive anti-roll bar
… bar that is thoroughly benchmarked herein. A mass reduction of 63% is observed when comparing the structural composite bar design to the existing steel bar.
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Numerical models of Hall thruster ionization oscillations
… time step size, grid refinement, heavy particle mass reduction, and an artificial permittivity factor. These studies help to determine the parameters that will produce accurate simulations in the future, and identify the parts of the model that need improvement. One-dimensional steady and …
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Improving and Expanding the Capabilities of the Poly-Picosatellite Orbital Deployer
… integrated into the P-POD. Additionally, some mass reduction modifications are made to the P-POD, while its overall strength is increased. The P-POD inert gas purge system successfully flew, on a previous revision P-POD. The P-POD components are analyzed to a set of dynamic loads for …
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Reconfigurability in space systems : architecting framework and case studies
… that reconfigurable parts can allow for 33-50% mass reduction. The system availability, however, becomes very sensitive to the reliability of the parts. Two case studies are then used for detailed illustration of the application of the developed framework.
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Enhanced anaerobic digestion of combined wastewater sludges through solubilization of waste activated sludge
… with exp NaOH outperforming lime. Volatile mass reduction was independent of SRT and the best overall VSS reduction was observed in the exp NaOHunit. However, the improvement in overall VSS reduction was attributed to the solubilization process itself, and not necessarily to better digester …
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Design, Manufacture, Dynamic Testing, and Finite Element Analysis of a Composite 6u Cubesat
… entail the increase of the satellite overall mass. Composite materials have demonstrated the ability to fulfill expectations like reducing structural masses, having been applied to different types of spacecraft, including small satellites.</p> <p>This Thesis is focused on designing, …
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Design of a Formula SAE electric powertrain
… peak power of 80kw allowed by rules and meet the mass goal of 23kg. Rear wheel independence needed to be maintained either through a multi-motor design or a differential, but with vehicle performance in mind. Stiffness of the mounting system was another goal, as the previous design had lateral …
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The impact of mass decompounding on assessing the value of vehicle lightweighting
… changes in processing. Although primary vehicle mass reduction is often associated with additional costs to the automaker, a decision to lightweight may, depending on when in the vehicle development process the decision is taken, result in additional secondary mass savings such that the value …
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Gingival MSCs Improve Bone Phenotype in Ovariectomy-Induced Osteoporosis via Programmed Cell Death Pathway
… systemic infusion of GMSCs elevated the bone mass reduction caused by Ovariectomy (OVX)-induced osteoporosis in both the femurs and mandibles of OVX mice, they also successfully rescued the function of the defective endogenous population of Bone Marrow Mesenchymal Stem Cells (BMMSCs). We saw …
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Low-Protein Meal Challenge as a Predictor for Weight Loss Success in Severe Obesity
… associated with less weight and fat mass reduction. Furthermore, the results indicate a single postprandial measurement of FGF21 following a high-caloric, low-protein test meal prior to starting a caloric restriction can be used as a blood-based biomarker for subsequent WL outcomes. A …
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A study of optimal automotive materials choice given market and regulatory uncertainty
… due to a lightweight materials enabled vehicle mass reduction is greater than the value of concurrent fuel economy improvements. When the value of acceleration improvements and fuel economy improvements are considered, the production volume at which it becomes economically efficient to switch …
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A Comprehensive Entry, Descent, Landing, and Locomotion (EDLL) Vehicle for Planetary Exploration
… system implemented by TANDEM reduces the mass of the overall system while enabling surface locomotion and mitigating risk associated with landing in the rough terrain of Venus's Tessera regions, which is otherwise nearly inaccessible to surface missions. TANDEM was compared to other …
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Structural fatigue assessment and optimisation of offshore wind turbine jacket foundations.
… integrity and fatigue life whilst reducing the mass. The research presents a comprehensive investigation of different parameters and design modifications that impact the design life of an existing jacket. An OC4 jacket foundation is employed, modelled in industrial software from DNV, and …
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Addressing performance bottlenecks for top-down engineered nanowire transistors
… improves the hole mobility due to hole effective mass reduction. With the surface passivation effect of the Si shell, the interface between the channel and dielectric is greatly improved. The parasitic source and drain (S/D) resistances in extremely scaled Gate-All-Around (GAA) nanowire devices …
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High-temperature superconductors as electromagnetic deployment and support structures in spacecraft
… and mechanical technique aimed at reducing the mass and increasing the stowed-to-deployed ratio of spacecraft systems. This technique uses the magnetic fields generated by high-temperature superconductors (HTSs) to support spacecraft structures and deploy them to operational configurations from …
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