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 32 for “"thermal profile"”.
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A numerical protocol for death-time estimation
… demonstrated that a body’s postmortem axial thermal profile was very specific to the PMI at which it exists, including during the PMTP that single-point core thermometry detects. This study proposed a body’s measured postmortem axial thermal profile for death-time estimation to reduce PMTP …
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Design and thermal modeling of a residential building
… is to design a physical model to simulate the thermal profile of a residential building with a conventional single-zone central heating system. A scale model of a 2-story house was designed and constructed at 1/20 of the length scale of an average lifesize house, with an external heater and …
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Development of a display screen correlation metric for thermal imaging cameras
Thermal imaging cameras detect infrared radiation to semi-quantitatively determine the thermal profile of the surroundings. Previously, no standard performance measurements have been established for thermal imaging cameras applications such as search and rescue and firefighting. The spatial …
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Seed dormancy and germination niches of Mediterranean species along an altitudinal gradient in Sardinia
… work, the effect of environmental factors on the thermal requirements for seed dormancy loss and germination of Mediterranean species was evaluated. Target species, located in Sardinia along an altitudinal gradient, have been chosen giving priority to endemic species as well as to the taxa with a …
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Aeration of Stockade Lake, South Dakota
… summers of 1967 and 1968 temporarily altered the thermal profile and phytoplankton density. Continual aeration for 48 hours in the deepest portion of this eutrophic lake produced epilmnetic cooling, hypolimnetic warming and apparent reduction of algal populations at three sampling stations in …
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Methodology for Pyrolysis-induced Thermal Runaway Analysis in Li-ion Batteries
… which have traditionally been tools in polymer thermal analysis since the 1950s, have seen increasing use in LIB thermal research in recent decades. However, applying these techniques to LIBs poses challenges due to the multifaceted composition of LIBs and its sensitivity to environmental …
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Melt growth of BSO (Bi₁₂SiO₂₀) : critical issues for growth in a micro-g environment
… BSO with and with out gravity were designed. (2) Thermal characteristics in a Bridgman system, specifically the distribution and the stability of the axial and radial thermal profile within the charge, are critical for the establishment of desirable growth environment (Chap 4 ). In this phase of …
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In situ temperature monitoring of the McMurdo Ice Shelf and ice shelf cavity by fiber-optic distributed temperature sensing
… rely on steady state models, however, the smooth thermal profile of ice shelves and high spatial resolution of DTS allow for small changes of the thermal gradient to be monitored over both time and space. The thermal gradient near the ice-ocean interface is extrapolated to the in situ freezing …
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Two Dimensional Friction Stir Welding Model with Experimental Validation
… and an additional ability to model the thermal recovery of the material would improve the overall performance of the model. Therefore, an experimental/numeric approach was taken to improve and quantitatively compare the performance of the model based upon the thermal profile of the …
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Investigation of integrally-heated tooling and thermal modeling methodologies for the rapid cure of aerospace composites
… to be heated, cured, and cooled via a prescribed thermal profile. Current methods use large fixed structures such as ovens and autoclaves to perform this process step; however heating these large structures takes significant amounts of energy and time. Further, these methods cannot control for …
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Structural Integrity of Polymer Matrix Composites Exposed to Fire Conditions
… temperature response of PMC's to combined thermal and mechanical loads are especially of concern. PMC thermal and mechanical properties undergo transformations at elevated temperatures. Some of these effects are reversible if the maximum temperatures are lower than approximately 200C. The …
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Development of active microwave thermography for structural health monitoring
… excitation to generate heat and the surface thermal profile of the material or structure under test is subsequently measured using a thermal camera (or IR camera). Utilizing a microwave heat excitation provides advantages over traditional thermal excitations (heat lamps, etc.) including the …
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Scanned pulsed laser annealing of Cu thin films
… laser annealing suggested that control of the thermal gradient would lead to an improved ability to manipulate grain structures. A scheme to alter the thermal profile during scanned pulsed laser annealing is implemented in the present work. Annealing of samples with Cu thin films over Si …
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Design, prototyping, and testing of an apparatus for establishing a linear temperature gradient in experimental fish tanks
… a new type of fish tank that provides a linear thermal gradient for experimental zebrafish in order to improve the accuracy and validity of their research. Zebrafish require the ability to select their surrounding water temperature in order to react to a simulated viral infection with an …
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Controlling the emergent microstructures in template-directed eutectic solidification for optical applications
… boundary effects, confinement, and applied thermal gradients. Further control on the emergence of these microstructures could be possible through templating. In this dissertation, particular emphasis is placed on determining the crucial aspects of template design parameters and studying …
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Identifying Optimal Sites for Aquaculture in Southern Ontario Aggregate Pit Lakes: A Sustainable Post-Mining Land-Use Alternative
… 6 proxy indicators such as lake surface area, thermal profile and local community vulnerability indicators. Our model aggregates this data and then assigns scores to each pit lake using both the Simple Additive Weighting (SAW) and Preference Ranking Organization Method for Enrichment of …
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Modeling the chemical, diffusional, and thermal processes of a microreactor
… species diffusivities. For characterizing the thermal profile, convective, conductive, and radiataive heat transfer modes were all included. However, because this ideal model faced convergence issues due to the complexity of the Maxwell-Stefan diffusion equations, a simpler model is presented. …
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Evaluation of environmental materials as thermal witness materials
… time scale. These environments produce high thermal stress where traditional sensors like thermocouples, optical pyrometers struggle to describe the dynamic changes in the environment. The presented research focuses on the development of thermal witness materials that are injected into the …
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The Role of Upstream Lakes in Determining Downstream Severe Lake -Effect Snowstorms
… simple boundary conditions subject to a single thermal profile applied across the domain. Fixed background winds, temperature, and humidity were then allowed to interact with a surface boundary composed of flat land and elliptical lakes. In the absence of orography and synoptic-scale transients, …
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A dynamo case study of Mercury, and the early orbital and thermal evolution of the Moon
… characteristics. This result supports either thermal or chemical stratification at the top of Mercury's core, and suggests that the northern hemisphere mantle could be more convective, which could be caused by moderately elevated concentration of heat-producing elements in that region. The …
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