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 5 of 5 for “"Gas imaging"”.
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Assessing Bovine Methane Emissions: Respiratory Simulation and Optical Gas Imaging Methods
… contribute significantly to global greenhouse gas levels. Quantifying these emissions is of key importance in mitigating their production. This work investigates the physical simulation of cattle breaths and the assessment of their methane content through the use of optical gas imaging (OGI). A …
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Trace gas imaging in the atmosphere with a Fabry-Pérot interferometer - a case study for sulfur dioxide
Atmospheric trace gas imaging allows the direct assessment of chemical dynamics, transport and mixing processes and is therefore desired in atmospheric physics and chemistry. For instance, the application of imaging measurements at trace gas point sources can substantially improve the determination …
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Highly tunable room temperature quantum cascade lasers
… based light sources in real-time video-rate gas imaging systems. Such a laser must produce pulses of >5ns in duration at a repetition rate of at least 5kHz with peak pulse powers of >10mW. The main QCL examined was an InAs/AlSb based device which had been carefully designed to maintain …
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Physics-guided inference from gas emission data for source characterization and air pollution mapping
… involved in leak quantification via gas imaging techniques. These uncertainties are quantified through statistical analysisof Large Eddy Simulation (LES) data. Our results show that uncertainties that are due to inferring the 3D plume structure from 2D projections become smaller as …
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Investigation of Multiphase Reactor Hydrodynamics Using Magnetic Resonance Imaging
… reactor hydrodynamics using magnetic resonance imaging (MRI). The study demonstrates experimental techniques by which computational and quasi-analytical fluid models may be validated. Three types of industrially-important multiphase reaction vessels are considered: a co-current upflow …