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 42 for “"Long Cycle"”.
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Combining thorium with burnable poison for reactivity control of a very long cycle BWR
… absorber in BWR fuel assemblies for very long cycle is investigated. Nuclear characteristics such as reactivity and power distributions are evaluated using CASMO-4. Without thorium, the results show that gadolinium enriched in Gd-157 has the lowest reactivity swing throughout the cycle. …
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Thermoelectrochemical model for RFB with an application at a grid level for peak shaving to reduce cost of the total electricity
… range of services.Desirable characteristics are long cycle life, high efficiency, and high energy density.A key challenge for aqueous redox flow battery systems is thermal sensitivity. Oper-ating temperature impacts electrolyte viscosity, species solubility, reaction kinetics,and efficiency. …
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Reduce cycle time and work in process in a medical device factory : scheduling of needle hub molding machines
… of this concept to limit WIP and reduce cycle time for the Becton, Dickinson and Company's manufacturing facility in Tuas, Singapore. BD's Eclipse Safety Needle production line is facing increasing pressure to reduce its high WIP and long cycle times. With the forecast of increasing …
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Process improvement and inventory management using value stream mapping in a biopharmaceutical environment
… be readily seen with blockages, starvation, and long cycle times, but must be solved with organizational and other fundamental improvements for improvements to be sustainable. Also presented is a case study showing a root cause and financial analysis relating to the capabilities of the aseptic …
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Innovating the standard procurement process
… as procurement, because of the high costs and long cycle times associated with contracting activities. The SPS is intended to increase efficiency by automating the process. However, simply automating the process may not bring about the quantum level of benefits sought by DoD. Following …
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Modeling and control of a hot micro-embossing machine
… structures, but its shortcoming is a relatively long cycle time. Therefore, it is imperative to find efficient ways of heating and cooling in addition to having good control of critical processing parameters. This thesis will address the modeling and control of a hot micro-embossing system which …
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Electrochemical studies of lithium-oxygen reactions for lithium-air battery applications
… Li-air batteries with high reversibility and long cycle life. In this thesis, the rotating ring disk electrode (RRDE) technique has been used to probe the influence of different electrolyte solvents on the stability of the superoxide radical produced on planar glassy carbon and Au electrodes. …
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Longissimus muscle fatigue and injury response due to electrical stimulation with varied work/rest ratios
<p>LONGISSIMUS MUSCLE FATIGUE AND INJURY RESPONSE DUE TO ELECTRICAL STIMULATION WITH VARIED WORK/REST RATIOS</p> <p>BY</p> <p>PETER WAWROW</p> <p>May 2011</p> <p>Advisor: John Cavanaugh, MD</p> <p>Major: Biomedical Engineering</p> <p>Degree: Doctor of Philosophy</p> <p>The estimated yearly cost of …
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Reduced cycle time and work in process in a medical device factory : the problem and a proposed solution
… of this concept to limit WIP and reduce cycle time for the Becton, Dickinson and Company's manufacturing facility in Tuas, Singapore. BD's Eclipse Safety Needle production line is facing increasing pressure to reduce its high WIP and long cycle times. With the forecast of increasing …
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Fluidic Assisted Fabrication of Elastomer Optical Lenses Using Capillarity
… which leads to high loss of material and long cycle time. With polymeric lenses, however, additive manufacturing methods work very well and have advantages of shorter processing times, negligible material loss and reduced costs. Unfortunately, up to now, only small-sized polymeric lenses …
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An inventory planning methodology for a semiconductor manufacturer with significant sources of variability
… to buffer against low yield, yield variability, long cycle times, cycle time variability, and uncertain demand. The thesis builds upon extensions of the Base Stock model to recommend target finished goods inventory (FGI) and work-in-process (WIP) levels, as well as material release decisions. The …
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Reduce cycle time and work in process in a medical device factory : scheduling policies for needle assembly machine
… of this concept to limit WIP and reduce cycle time for the Becton, Dickinson and Company's manufacturing facility in Tuas, Singapore. BD's Eclipse Safety Needle production line is facing increasing pressure to reduce its high WIP and long cycle times. With the forecast of increasing …
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The Synthesis and Application of 1,4-Dithiins, Thianthrenes, and Other Sulfur-Rich Scaffolds
… thianthrenes, and new sulfur-rich macrocycles. In Chapter 1, we offer a review of the properties, general synthesis, and materials application of 1,4-dithiins and thianthrenes. Additionally, the installation of sulfur atoms in macrocyclic compounds and the benefits thereof is detailed. …
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Direct Lithium-ion Battery Recycling to Yield Battery Grade Cathode Materials
… materials for EV applications due to their long cycle life, high capacity, and low cost. In 2008, 18.9% of Lithium-ion batteries used NCM cathode material worldwide while this number increased to 31% six years later. An environment–friendly and low-cost direct recycling process for NCM has …
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Advanced battery modeling for interfacial phenomena and optimal charging
… higher energy density and areal capacity, long cycle life, fast charging rate and enhanced safety for lithium-ion battery (LIBs) are urgently needed. To solve these challenges, the relevant physics at different length scale need to be understood. However, experimental study is time …
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Desempenho de genótipos de canola submetidos a diferentes épocas de semeadura em três anos de cultivo
… be delayed. To study the conditions of short-cycle genotypes are more recommended than genotypes long cycle, since the risks of long periods of drought is always high, especially from the month of July.
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Synthesis Of Graphene Nanomaterials And Their Application In Electrochemical Energy Storage
… capacitors, with fast power delivery and long cycle life are complementing or even replacing batteries in many applications. The rapid development of miniaturized electronic devices has led to a growing need for rechargeable micro-power sources with high performance. Among different …
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Hybrid nanostructure designs facilitated by M13 virus for lithium ion battery and lithium air battery electrodes
… systems to achieve large capacities and a long cycle life. Furthermore, the chemical composition of virus-templated inorganic nanowires was easily tuned to study the catalytic behavior of transition metal oxides in Li-0₂ batteries. These bio-directed methods to develop high performance …
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45nm direct battery DC-DC converter for mobile applications
… energy source due to their high energy density, long cycle life and low memory effects. With the aggressive downscaling of CMOS, it is becoming increasingly difficult to efficiently interface the low voltage, low power digital baseband and DSP of the mobile phone with the battery which maybe at …
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Process improvement and analytics of commercial material substantiation
… 4 months prior to commerciality. Reasons for the long cycle time include labor time, a lengthy paper internal approval process including process downtime, lost or misprocessed documents, and insufficient employee training. To combat these inefficiencies, a formalized commercial substantiation …
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