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 55 for “"Habitability"”.
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Modelling biogeochemical controls on planetary habitability
… defined `habitable' limits. Complex states of habitability derived from complex interactions between multiple factors may arise over the course of the evolution of an individual terrestrial planet with implications for long-term habitability and biosignature detection. The duration of these …
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A multi-parameter approach to exoplanet habitability
… pressure, and surface temperature that affect habitability. Evidence from the solar system suggests that, unlike Venus and Mars, the presence of a significant magnetic dipole moment and the maintenance of a long-term carbon cycle aided by plate tectonics has assisted in preserving liquid water …
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A multi-parameter approach to exoplanet habitability
… pressure, and surface temperature that affect habitability. Evidence from the solar system suggests that, unlike Venus and Mars, the presence of a significant magnetic dipole moment and the maintenance of a long-term carbon cycle aided by plate tectonics has assisted in preserving liquid water …
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The impacts of atmospheric radiation on studies of planetary habitability
The conditions required for Earth-like life to emerge on a planet are thought to include the presence of liquid water, the availability of energy, the existence of organic material, and shielding from high energy charged particles. There are situations when determining whether these conditions …
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Tracing the horizons of habitability with Venus and warm rocky exoplanets
… holds unique significance for the limits of habitability on both of these frontiers: first, Venus represents the paradigm of an Earth-like planet that either did not form or did not hold onto surface conditions habitable to known terrestrial life; second, the extreme environment of Venus's …
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Formation, structure and habitability of super-Earth and sub-Neptune exoplanets
… bulk compositions, formation histories, and habitability. We develop a model for the internal structure of low-mass exoplanets consisting of up to four layers: an iron core, silicate mantle, ice layer, and gas layer. We quantify the span of plausible bulk compositions for low-mass transiting …
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Last Call for Life: Habitability of Terrestrial Planets Orbiting Red Giants and White Dwarfs
As a star evolves, the orbital distance where liquid water is possible on the surface of an Earth-like planet, the habitable zone, evolves as well. While stellar properties are relatively stable on the main sequence, post-main sequence evolution of a star involves significant changes in stellar …
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Applications of modular construction techniques for habitability spaces in naval ship design and production
Traditional construction methods for habitability spaces in naval ships, particularly aircraft carriers, are manpower intensive and expensive. In response to decreasing defense spending, the Navy is considering methods to improve the affordability of aircraft carriers. Modular construction …
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Prefab the FabLab : rethinking the habitability of a fabrication lab by including fixture-based components
This thesis is about defining a fixture-based system that can be adapted into a digital fabrication production system of friction fit assembly. It is inspired by the work and research conducted by the Digital Design Fabrication Group at MIT, specifically the work related to the Cabin House and the …
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New Mineralogical and Geochemical Characterization of Martian Meteorites: Implications for Habitability and Astrobiological Exploration of Mars
Mars is thought to have shared many similarities with the Earth during its history, leading to extensive research into the potential for life to arise on Mars. Here, a thorough mineralogical and geochemical characterization of primary and secondary phases in Martian meteorites Los Angeles, Zagami, …
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Microbial communities, activities, and metabolisms in Earth’s subseafloor and analog oceanic environments
… transformations, energy flow, and the long-term habitability of the oceanic crust, while also offering insight into the potential for life on other Ocean Worlds. However, the functional dynamics of these subseafloor microbial communities remains unresolved. This thesis investigates how …
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Toward new tracts for America : the house and its serial deployment
… the goal is to create a condition that supports habitability and flexibility of spatial, constructional and programmatic systems at all levels, from house to neighborhood .
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Modeling Non-Rotational Ocean Circulation and Heat Distribution in Icy Moons
… for extraterrestrial life. Their long-term habitability depends on internal heating and efficient vertical heat transport to maintain liquid water beneath the surface. This study models vertical heat diffusion in a non-rotating ocean column to investigate thermal structure and energy balance …
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Triple oxygen isotope measurements in chert: insights into the Snowball Earth glaciations
… of life, atmospheric oxygen, and planetary habitability. There remains a myriad of questions about the dynamics of these global glaciations, especially regarding the relationship between the cryosphere and hydrosphere during this time. This study analyzes silica precipitates within a …
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Effect of temperature-dependent ice properties on ice shell convection for icy ocean worlds
Ice shell dynamics are a critical control on the habitability of icy ocean worlds. Here, we present a systematic study evaluating the effect of temperature-dependent material properties on these dynamics. We review the published thermal conductivity data for ice, which demonstrates that the most …
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Planning for Pollinators, Encouraging Biodiversity for Agriculture Resiliency
… bees. The decline indicates that the future habitability of earth may be in jeopardy. The solution to this crisis is to expand the habitat of native bees into our existing infrastructure, connecting the pollinator dependent crops with a network of biodiverse habitat. This will greatly improve …
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Four problems in nonlinear Earth system dynamics
… Earth system disruptions, and Earth’s persistent habitability thus far. I show that stabilizing feedbacks indeed controlled temperature on timescales of thousands to hundreds of thousands of years, but not on longer timescales. This supports silicate weathering as an important long-term climate …
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The role of the aerodynamic modifications of the shapes of tall buildings
… the performance of cladding and window, and the habitability of occupants. Therefore, much research on mitigating wind induced excitations of tall buildings has been carried out. This thesis focuses on the effect of shape modification on the wind flow pattern around tall buildings. An appropriate …
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Constraining Planetary Science Problems with Micro-Paleomagnetism
… for the thermal evolution of the Earth and habitability. For the latter I focused on the paleomagnetism of three different components from CO carbonaceous chondrites: calcium-aluminum-rich inclusions, chondrules and matrix, with them we can measure the solar nebula magnetic field which have …
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Investigation of Shocked Basalts from Vargeão Dome and Vista Alegre: Implications for the Search for Life on Mars
… of a hydrothermal system and increase the habitability of the substrate for the colonization of endolithic microorganisms. Given that Mars’ surface is covered by cratered basaltic rock, this study investigated target rocks and impact breccias from Vargeão Dome and Vista Alegre impact …
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