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.
Results
Showing 1 to 20 of 386 for “"atmospheres"”.
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Chemical Characterisations of Exoplanetary Atmospheres
We examine the properties of exoplanetary atmospheres using state-of-the-art retrieval methods and theoretical models. The examinations include investigations of the chemical compositions and abundances, the cloud and haze properties, and the temperature structures of exoplanetary atmospheres. The …
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Atmospheres of Change: Virtual Production
… on pre-existing representations of production atmospheres. I then turn to contemporary artifacts in the year 2020 which showed how shifts in production pipelines through virtual production were being represented. I conclude by offering a medium-based approach to the LED screen as a way to …
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Infrasound Propagation in Terrestrial Planetary Atmospheres
… waves in different terrestrial planetary atmospheres. The model, which includes gravity, molecular viscosity, and thermal conduction, has been developed using numerical solutions in Fortran, and is validated for the atmospheric conditions of Earth, Mars, and Venus. Empirical profiles for …
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"An analysis of Gyorgy Ligeti's ""Atmospheres"" "
Atmospheres, a work for large orchestra composed in 1961 by Gyorgy Ligeti, is a strikingly attractive display of novel sonorities and dramatic effects. Evidence of aesthetic significance is sought, particularly in structural relationships readily perceptible by the listener. To facilitate …
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Revealing the Nature of Exoplanetary Atmospheres
… of multiple chemical species in exoplanetary atmospheres. However, measuring the abundances of these molecules and atoms, as required to infer exoplanet formation mechanisms, has been challenged by the prospect of atmospheric clouds. In this thesis, I introduce a new approach to retrieve …
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Modeling and Observing Atmospheres of Terrestrial Exoplanets
… can characterize terrestrial planets and their atmospheres, this dissertation features several theoretical works that study atmospheric dynamics and infer observability. First, we explore the processes of non-collisional atmospheres to determine the tendency of exospheric volatile transport. We …
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The future of the past: inherent atmospheres
This dissertation is an attempt to extract architecture from the site itself. Michelangelo, the Italian Renaissance painter, sculptor, architect, poet, and engineer, famously said, Every block of stone has a statue inside it and it is the task of the sculptor to discover it. He clearly understood …
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Spatial Operations: Peter Sloterdijk and Contemporary Military Atmospheres
… examines the nature of contemporary military atmospheres through the work of Peter Sloterdijk. On the 100th anniversary of the beginning of the First World War, this research starts from Sloterdijk’s claim that the modern ‘air-condition’ is inherently linked to the atmospheric warfare of 1915. …
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Observations, Thermochemical Calculations, and Modeling of Exoplanetary Atmospheres
… thermochemical calculations, and modeling their atmospheres. We used Spitzer multi-wavelength secondary-eclipse observations to characterize planetary atmospheres. We chose targets with high signal-to-noise ratios, as their deep eclipses allow us to detect signatures of spectral features and …
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Studies of Polycyclic Aromatic Hydrocarbons in Urban Atmospheres
… hydrocarbons (PAH) are known to exist in urban atmospheres and are suspected of carcinogenic potential. The implementation of emission control regulations and changes in fuel usage over the last twenty-five years has affected air quality in general and PAH concentrations in particular. In …
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Investigating the Characteristics of Exoplanetary Atmospheres and Interiors
… models of a number of sub-Neptunes whose atmospheres are set to be observed using JWST. Before such observations take place, it is vitally important to understand the interior structures of these planets, which strongly affects their possible atmospheric compositions. We use the bulk …
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Characterising Exoplanet Atmospheres with High-Resolution Transmission Spectroscopy
… accelerated rapidly towards characterising the atmospheres of exoplanets around the nearest and brightest stars with large observational surveys from ground-based and space-based instruments. This thesis contains an overview of state-of-the-art methods for detecting chemical species in the …
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Isotopes as a Tool for Exploring Exoplanet Atmospheres
… I evaluate how we can characterize exoplanet atmospheres using isotopologues. I also extend this to the detectability of novel biosignature gases by way of carbon isotope ratios. I evaluated the detectability of ¹³CO₂ in the atmospheres of temperate terrestrial and sub-Neptune sized planets …
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Near-infrared Characterization of the Atmospheres of Alien Worlds
In this thesis I present near-infrared detections of the thermal emission of a number of hot Jupiters and likely transit depth differences from different wavelength observations of a super-Earth. I have pioneered ``Staring Mode'' using the Wide-field Infrared Camera on the Canada-France-Hawaii …
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A New Library of Stellar Model Atmospheres and Spectra
… medium are based upon. Libraries of model atmospheres and stellar spectra have been previously computed using ATLAS9 based upon the solar metallicity and chemical composition values calculated by Grevesse & Sauval (1998), used as the standard until Asplund et al. (2009) produced a new …
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Homogeneous nucleation of water vapor in inert gas atmospheres
"The homogeneous nucleation of water vapor in atmospheres of helium, neon, argon, krypton, and xenon was studied using an expansion type cloud chamber. A strong dependence of the nucleation rate on the particular inert carrier gas was observed. At present the only dependence upon the nature of the …
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Spectropolarimetry of epsilon Aurigae: Probing Stellar and Disk Atmospheres
<p>The bright eclipsing binary system epsilon Aurigae offers a unique opportunity to uncover physical mechanisms contributing to disk formation and evolution and to explore the relationship between photospheric anisotropies, stellar pulsation and mass loss. This research contributes to our …
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