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 337 for “"Mass Transport"”.
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Mass transport in polymers
The study of mass transport in polymeric membranes has grown in importance due to its potential application in many processes such as separation of gases and vapors, packaging, controlled drug release. The diffusion of a low molecular weight species in a polymer is often accompanied by other …
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Mass transport in implantable medical devices
Thesis (Ph. D.)--Massachusetts Institute of Technology, Whitaker College of Health Sciences and Technology, 1998.
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Mass-transport deposits on Mediterranean continental margins
Extensive mass transport deposits and multiple slide scars testify widespread and recurrent submarine sediment failures occurring during the late Quaternary on the SW-Adriatic and SE-Sicilian margins. These mass movements and their consequences contributed to shape the continental slopes and fill …
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Studies in mass transport in contact metamorphism,
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1968.
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Hydrodynamic and Mass Transport Properties of Microfluidic Geometries
… modeling of experimental data using simplified transport equations and static force balances. This is possible because the length scales of these geometries ensure low Re conditions approaching the Stokesian limit, where the flow profile is laminar, viscous forces are dominant and inertial …
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Materials with engineered mesoporosity for programmed mass transport
Transport in nanostructured materials is of great interest for scientists in various fields, including molecular sequestration, catalysis, artificial photosynthesis and energy storage. This thesis will present work on the transport of molecular and ionic species in mesoporous materials (materials …
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Multiphase flow and mass transport through porous media
… problems always involve the multiphase flow and mass transport through three phases, namely air, oil, and water. A finite element model is developed in this thesis based on the theory of multiphase flow weakly-coupled with the theory of mass transport, in a three-dimensional setting. Galerkin's …
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Convective mass transport for viscous flow past an evolving boundary
"A Boundary Integral-Spectral Element method is developed that solves two-dimensional Helmholtz equations. This high order technique is shown to be adaptable to a variety of boundary conditions and solves elliptic partial differential equations efficiently such that it is applicable to moving …
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Characterizing mass transport and crossover reactions in Li-air batteries
… energy densities. Similar to fuel cells, mass transport of redox active species, such as dissolved oxygen gas or redox mediators, is one of the challenges faced by LABs. While increasing mass transport increases LAB cell performance, it can also increase crossover of the redox active …
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New concepts in energy and mass transport within carbon nanotubes
… CNTs have been explored for energy transport in next-generation, such as light-emitting diodes, field-effect transistors, and phonon wave guides due to their high axial electrical and thermal conductivity. Also, their subnanometer scale with atomically smooth surfaces is promising …
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Swelling, mass transport, and chemical kinetics in bituminous coal pyrolysis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
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The effect of mass transport on deposit quality in copper electrowinning
… of copper electrodeposits depend strongly on mass transfer conditions of copper ions to the electrode surface. Mass transfer properties in electrowinning electrolytes were first characterized. The effective diffusivity of cupric ion was measured with a rotating disk electrode in …
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Multiphysics Computational Model of Fluid Flow and Mass Transport in Aneurysm
… rupture which is a catastrophic event leading to massive internal bleeding and possibly death. AAA cases have been characterized by the development of an intraluminal thrombus (ILT). The ILT correlates with the progression of hypoxia in the arterial wall. The extent that ILT presence reduces …
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Oxygen as a Mass Transport Probe in Polymer Films (Chronocoulometry, Hydrodynamic)
… poly(vinylpyridine)) through diffusion of a mass transport probe (molecular oxygen) have been developed. Detection of oxygen diffusion through several ferricyanide-loaded PVP films on a rotating disk electrode allows evaluation of permeation coefficients. (kD(,S)). A background-subtraction …
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Experimental Investigations on Flow and Mass Transport in Stressed Rough Fractures
The study of flow and transport in rough, fractured media is essential in the development of new energy technologies including enhanced geothermal systems, EGS, and CO2 sequestration. This is a complex problem, mostly due to the number of interacting physical processes in the fractured environment. …
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Simultaneous heat and mass transport with phase change in insulated structures
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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A study of liquid mass transport in annular air-water flow
Massachusetts Institute of Technology. Dept. of Nuclear Engineering. Thesis. 1967. Sc.D.
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Mass transport in the cathode electrode of a molten carbonate fuel cell
… a limited amount of research on modelling the transport processes inside this device, mainly due to its limited ability for mobile applications. In this thesis, three one-dimensional models of a MCFC are presented based on different types of diffusion and convection. Comparisons between models …
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