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 18 of 18 for “"temperature requirements"”.
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Parametric Study of Novel Passive Thermal Control Technology for Spacecraft
… passively change their emissivity based on their temperature, with VEMs having low emissivity at low temperatures and high emissivity at high temperatures. This property of VEMs allows for spacecraft to have reduced heater power and less extreme temperature swings without adding active thermal …
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Exploring Energy, Comfort, and Building Health Impacts of Deep Setback and Normal Occupancy Smart Thermostat Implementation
… while complying with the ventilation and temperature requirements of ASHRAE 90.2-2013. Custom weather models and occupancy schedules were generated to efficiently explore a combination of weather conditions, building constructions, and occupancy states. The custom modeling approach was …
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Integrated Electro-thermal Design Methodology in Distributed Power Systems (DPS)
… of semiconductor device power loss and junction temperature in an iterative process. However these dependencies are important, especially for applications where both cooling and power losses are driven by complex mechanisms. For a power supply system, a dynamic design process is necessary to …
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Thermoenergetics of Indiana Bats
… species have come into focus. As hibernacula temperatures in several caves have increased, the metabolic rate of hibernating bats should increase, resulting in faster utilization of the bats' stored energy reserves; bats use more energy to maintain their torpid state at higher temperatures and …
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Feasibility studies of the exhaust-gas reforming of hydrocarbon and alcohol fuels
… practical work, however, relate to high reformer temperature requirements, and low reformed fuel generation rates. The findings of the studies are drawn together in a discussion of the practical feasibility of a vehicle installation, and project conclusions.
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Growth and Nutrition of Carp in Heated Effluents
… with increasing level of feeding at each temperature. Temperature and feeding rate influenced the proximate body composition of carp. Feeding trials showed that the protein level, of diets containing 18% lipid, could be reduced from 45 to 30% with no diminution of weight gain and with …
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Utilization of the Phanerochaete chrysosporium ligninolytic system and the potential for toxaphene degradation
… liquid cultures. The effects of culture growth temperature and toxaphene concentration were evaluated. The extent of toxaphene conversion with time was determined using three different indicators; toxaphene gas chromatographic elution patterns, the determination of free chloride concentrations …
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Development of native species of Crete in the urban landscape: an investigation of systems and plant reproduction, adaptability and fitness of wild species in commercial horticulture
… asexual propagation as well as their cultural requirements and adaptability in urban landscape were studied. In addition to identifying the light and temperature requirements for seed germination of the species, Other factors were important including after-ripening for P. chamaepence and S. …
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Low temperature heterogeneous integration of germanium on silicon
… process flow. BEOL integration introduces strict temperature requirements of T<450°C to prevent metal diffusion and oxidation of devices already on-chip. First, this thesis tackles BEOL-compatible active devices such as Ge-on-Si PDs for the near-IR wavelength range. We developed a BEOL-compatible …
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Development of adsorption-based atmospheric water harvesting and thermal energy storage technologies
… with high sorption capacity and low regeneration temperature requirements, allow us to efficiently utilize them for these applications. However, detailed experimental and theoretical frameworks for the use of advanced sorbents have not considered several important aspects (e.g., …
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The Effect of Steady-State Digestion Temperature on the Performance, Stability, and Biosolids Odor Production associated with Thermophilic Anaerobic Digestion
… as mixing, solids retention time, and digestion temperature are often selected on the basis of certain desirable outcomes such as the deactivation of human pathogens, these parameters have been shown to have a broad impact on the overall sludge digestion process. Since the current …
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The vertical distribution and migration of planktonic rotifers in a hypereutrophic tarn
… availability and show clearly the oxygen and temperature requirements of the different species.Diel studies in 1983 showed that most of the rotifer species can perform vertical migrations. These were more often a reverse migration (up during the day and down at night) than the expected normal …
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Process and Material Modifications to Enable New Material for Material Extrusion Additive Manufacturing
… at two opposing ends of the FFF-processing temperature: low processing temperature (<100 °C) for pharmaceutical applications and high processing temperatures (>300 °C) for high-performance structural polymer applications. Both applications lie outside the typical range for FFF (190-260 °C). …
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Advanced Manufacturing and Dielectric Material Characterization Techniques for High-Temperature mm-Wave Antennas
<p>As traditional monitoring data sensors in high temperature environments such as gas turbine engines and aerospace applications are being replaced by wireless equivalents in recent years, there is a need for low-cost, low-time, and low-infrastructure alternatives to further push the state of the …
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A THERMO-ECONOMIC STUDY OF SOLAR COOLING/HOT WATER SYSTEMS
… operating periods owing to high collector output temperature requirements for absorption cooling. The performance could be improved by incorporating a water heating loop in the basic cooling system so that the collectors could be utilised for hot water production during such "idle" periods. …
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Seed germination requirements and salt stress tolerance of coastal rare species in Sardinia
… stresses. Stress may be physical (e.g. temperature) or chemical (e.g. salinity). Many communities comprise highly specialized species, which have comparatively restricted geographical distributions. The coastal species investigated in this Ph.D. program were chosen accordingly to their …
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A novel low-temperature growth method of silicon structures and application in flash memory.
… device reliability. However, current high temperature (>600 °C) growth techniques of the Polycrystalline silicon floating gate material are incompatible with 3-D flash memory; with vertically stacked memory layers, which require process temperatures to be ≤ 400 °C. There already exist some …
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Enhancing hot tooling to forge high-γ ′ superalloys
… in aircraft turbines for their remarkable high-temperature properties to enhance engine efficiency and reduce aviation emissions. These alloys are forged at temperatures approaching 1100 °C and require careful selection of process parameters to eliminate severe billet cracking and the …