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 56 for “"Vertical transport"”.
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Vertical transport evacuation modelling
… station, occupants often heavily rely on vertical transport devices (e.g. escalators, lifts, etc) to travel vertically between levels. Typically such devices provide a faster and more comfortable means to travel than the equivalent stairs. Such devices also provide an additional means for …
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Vertical transport at curved ocean fronts
… At mesoscale and submesoscale fronts, enhanced vertical velocities play a key role in exchanging heat, carbon, and other biogeochemical tracers between the ocean interior and the surface, which is in contact with the atmosphere. Because of Earth’s rotation, flow at ocean fronts tends to be …
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Generation and vertical transport of zonal kinetic energy.
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Storage and vertical transport of stratospheric momentum during the IGY
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1963.
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A Numerical Study of the Structure and Vertical Transport Properties of A Tropical Convective System
Two- and three-dimensional numerical cloud ensembles models have been developed to study the collective response, statistical properties and formation of convective clouds. In the tropics, large-scale lifting is predominantly due to the destablizing effect of large-scale lifting. Thus, a prescribed …
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Vertical Transport of Sediment from Muddy Buoyant River Plumes in the Presence of Different Modes of Interfacial Instabilities
This study focuses on deposition processes from sediment laden buoyant river plumes in deltaic regions. The goal is to experimentally examine the effects of various physical phenomena influencing the rate at which sediment is removed from the plume. Previous laboratory and field measurements have …
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Modeling ocean transport and its biogeochemical impacts at global, regional, and sub-meso scales
… change. This thesis explores how horizontal and vertical currents at different scales impact biogeochemical cycling through the redistribution of tracers such as alkalinity, nutrients, and carbon. Starting at the large scale in Chapter 2, we use a mesoscale-permitting global ocean model to …
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Dynamics of Langmuir circulation in oceanic surface layers
… Langmuir circulations dominate the near-surface vertical transport of momentum and density when the characteristic scale for forcing (defined as the Craik-Leibovich instability parameter γCLS) is stronger than the characteristic scale for diffusive decay γdiff. Since the wave-current forcing is …
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Schindler elevators in Colombia : strategic renewal a case of strategic renewal of a company in crisis existing facilities division
… The Schindler Group specializes in the vertical transport industry. For that reason, the company focuses on the design, manufacturing, marketing, installation of equipment, the execution of preventive maintenance and the modernization of elevators, escalators, and ramps, worldwide. Thus, …
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Transport Processes of Reactive Trace Gases in the Atmospheric Boundary Layer
Transport of trace gases within the atmospheric boundary layer plays a key role in feedback processes between the earth’s surface and the atmosphere and consequently in ecosystem budgets of carbon and nitrogen (among many more). For a correct quantification of the exchange between surface and …
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Residual overturning circulation and its connection to Southern Ocean dynamics
… I tested the response of the stratification and transport in the Southern Ocean to changes in wind using a highly-idealized two-layer quasi-geostrophic model. In addition to showing that meanders are necessary to reproduce the behavior of the Southern Ocean, I found that strong winds concentrate …
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Vertical fluxes in the upper ocean
… and submesoscale are associated with enhanced vertical motion, which strengthens their role in global biogeochemical cycling as hotspots of primary production and subduction of carbon from the surface to the interior. Using process study models, theory, and field observations of biogeochemical …
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Formation of Nitrous Acid on Urban Surfaces
… mixing ratios of ~200 ppt using DOAS. A chemical transport model (RCAT 8.1.2) was modified to quantify the individual contribution of the vertical transport effects and chemical processes for different times of the day. While aerosols were found to be of minor importance under all circumstances, …
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Vertical Fluxes in the Upper Ocean
… and submesoscale are associated with enhanced vertical motion, which strengthens their role in global biogeochemical cycling as hotspots of primary production and subduction of carbon from the surface to the interior. Using process study models, theory, and field observations of biogeochemical …
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Vertical Structure And Surface Interactions Of Nitrous Acid Using A 1D Model
This study was undertaken in order to study the vertical distribution and surface interactions of gas-phase HONO under non-ideal mixing conditions during the 2011 NACHTT campaign using the Platform for Atmospheric Chemistry and vertical Transport in One Dimension (PACT-1D) model. This work builds …
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Creation is a Patient Search: An Exploration of Form
… the buttresses which house the services and vertical transport, are the connection between the earth and sky. The true question of this thesis was when or how to stop? At what point did the figure become appropriate? It became a question of aesthetic judgement, and how did the building want …
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On the evolution & equilibration of submesoscale fronts
… ocean. These fronts are associated with large vertical transport and are hotspots for biological activity. Submesoscale fronts are susceptible to symmetric instability — a form of convective–inertial instability which occurs when the potential vorticity is of opposite sign to the Coriolis …
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Investigation of 137Cs and Pu isotopes accumulation in soil /
… factors determining the sorption/desorption and vertical transport of 137Cs and Pu isotopes in soils of different types and different moisture regime (relatively dry or periodically flooded soils). The sorption capacity of plutonium in different soil types with different particle sizes, organic …
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137Cs ir Pu izotopų akumuliacijos dirvožemyje tyrimas /
… factors determining the sorption/desorption and vertical transport of 137Cs and Pu isotopes in soils of different types and different moisture regime (relatively dry or periodically flooded soils). The sorption capacity of plutonium in different soil types with different particle sizes, organic …
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Theory of molecular scale thermoelectricity
… the backbone of a molecule can eliminate phonon transport through the backbone over a wide range of frequencies. Moreover, we demonstrate that chemical modification of thiophene molecular wire to ethylenedioxy-thiophene molecular wire can improve their thermoelectric efficiency. Furthermore, to …
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