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 248 for “"Transport processes"”.
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Transport processes in quantum spinsystems
In dieser Arbeit werden Transportprozesse in Quanten-Spin-Systemen untersucht. Zuerst wird der stationäre Zustand von Spin-Ketten zwischen 2 Wärmebädern unterschiedlicher Temperatur betrachtet. Für das XY Modell ergibt sich eine im Innern der Kette räumlich konstante Energie. Der Energiestrom ist …
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Modeling transport processes in directional solidification.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1994.
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Transport processes in the arbuscular mycorrhizal symbiosis
… symbiotic partners is very limited. Therefore, transport processes of both, the plant and the fungal partner, are investigated in this study. In order to enhance the understanding of the molecular basis underlying this tight interaction between the roots of Medicago truncatula and the AM fungus …
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Elucidation of chemically-induced transdermal transport processes
In this thesis, chemically-induced transdermal transport enhancement has been examined as one of the many techniques currently used to increase the skin permeability to a broader range of pharmaceutically relevant drugs. By taking advantage of the current developments in instrumentation technology, …
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Theory of electron transport processes in tunnel diodes
A unified theory of conduction processes in tunnel diodes is presented. The use of Fermi-Dirac distributions in non-equilibrium tunneling integrals is justified. The direct tunneling mechanism is examined from two points of view and is shown to be described about equally well by either. In …
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Electrochemical and Transport processes in Ion Intercalation materials
… can be thought as an electrochemical plant where processes related to transport phenomena (solid/liquid diffusion) and kinetics (ion insertion/extraction) take place. Even though extensive research has been done in understanding and optimizing the solid and liquid diffusion properties of the …
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A theoretical study of some transport processes in semiconductors
The problems discussed range from the scattering of electrons byimpurity potentials to the propagation of electromagnetic waves in anon-active plasma.In particular the theory of dipole scattering in semiconductors isconsidered in some detail. The earlier part of text contains a discussionof the …
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Modelling of transport processes in chemical vapor deposition reactors
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
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ISOTOPIC CONSTRAINTS ON ATMOSPHERIC MOISTURE TRANSPORT PROCESSES IN SOUTH AMERICA
… us with insights into low-latitude moisture-transport processes in the modern climate system, recorded in paleoclimate proxy records, and in general circulation models that we rely on to understand how our climate is changing. Advances in satellite and groundbased instruments in the past …
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Transport Processes along Riverine Environments and their Impact on Microplastics
… use in products like cosmetics and industrial processes. Found in diverse ecosystems such as oceans, rivers, and soils, these particles resist biodegradation and are readily ingested by wildlife, posing potential ecological and health risks. In river systems, MP act as markers of local …
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Optoelectronic properties and energy transport processes in cylindrical J-aggregates
… energy by efficient light capture and subsequent transport of the light’s energy to a chemical reaction center. Man-made optical devices could benefit by mimicking these naturally occurring light harvesting processes. Supramolecular organic nanostructures, composed of the amphiphilic carbocyanine …
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Heat Storage and Transport Processes in the Tropical Atlantic Ocean
<p>Heat storage and transport processes of the tropical Atlantic play an important role in the climate of three continents. The exploration of how the warm water mass maintenance in the equatorial basin depends on various external factors is therefore an important task. This study examines the …
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Energetics of Turbulence Explains Physical Transport Processes in the Environment
<p>The indispensability of turbulent transport processes in environmental flows for a broad spectrum of applications, such as river restoration, sediment transport, and wetland design, is a widely acknowledged fact. Notably, turbulent eddies exert a substantial influence on transport phenomena, …
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Understanding transport processes of organic semiconductors via magnetic resonance methods
… on understanding the excitation and charge transport processes and searching for novel material systems with high mobility together with sufficient carrier densities; however, due to the non-periodic arrangements of molecules and the softness of structure rising from the weakly van der Waals …
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Mechanisms of dynein-based mRNA transport processes in human cells
… is commonly mediated by molecular motors, which transport mRNAs along the cytoskeleton to specific cellular regions. Despite the widespread occurrence of mRNA transport, the precise mechanisms by which transcripts are recognised and recruited to motor complexes in mammals are not understood. This …
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Investigation of hydrologic and sediment transport processes on riparian hillslopes
… site conditions on the hydrologic and sediment transport response of riparian zones/hillslopes. Research investigations were focused in two major areas: field investigations of riparian hillslopes and development of a riparian hillslope model. The objective of the field investigations was to …
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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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Benzo(a)pyrene control and transport processes in smoke meat products
… se aborda el estudio de los procesos de transporte y contaminación por BaP, durante el ahumado directo de uno de los productos cárnicos españoles más conocidos, el chorizo, elaborado en una zona no estudiada antes. Además, se investigan las posibles causas para su prevención. Para ello, …
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The Effect of Injury on Transport Processes in Corn Root Tissue
Made available in DSpace on 2015-05-14T15:10:01Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8009051.PDF: 5871917 bytes, checksum: 410ff53d377f2b3ceb9d8353ec52d1b6 (MD5) Previous issue date: 1979
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