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 191 for “"Liquid Water"”.
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Spectroscopic investigations of hydrogen bond dynamics in liquid water
… remarkable physical and chemical properties of liquid water are due to the strong influence hydrogen bonds have on its microscopic dynamics. However, because of the fast timescales involved, there are relatively few experimental techniques capable of directly probing rearrangements of water's …
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Orientational fluctuations of liquid water at hydrophobic and hydrophilic interfaces
Being ubiquitous in nature, liquid water interfaces host many important physical and chemical processes. Most of these processes are affected by the properties of water interfaces which depend on molecular details of the interfacial environments. It is thus fundamental to understand microscopic …
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Thermodynamic Formation Conditions for Propane Hydrates in Equilibrium with Liquid Water
… conditions of pure propane in the presence of liquid water is important to avoid flow assurance issues in processing, storage and transportation of liquefied petroleum gas, as well as modeling hydrate based separation processes involving type II hydrates. Experimental dissociation conditions …
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Quantum Monte Carlo Methods for First Principles Simulation of Liquid Water
… well-converged data. This problem affects all water simulations, but the implications are most severe for ab initio methods, where the cost for a single simulation step is very high to begin with. We describe a number of approaches to address this challenge and their utility and outlook.
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Nmr Studies of Compressed Supercritical Water and Proton Exchange in Compressed Liquid Water
In the appendices are details of two design projects. The first concerns a design for loading high pressure NMR probes into superconducting magnets. The second is the design of a variable temperature (-50 to 1000(DEGREES)C) NMR probe. The relaxation times of Na('+) in NaCl(l) are also reported in …
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Optimum retrieval techniques in remote sensing of atmospheric temperature, liquid water, and water vapor
Thesis. 1978. Ph.D.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Discovery of mechanisms and methods for surface-based defect engineering in oxide semiconductors using liquid water
… domains of defect engineering from gas-solid to liquid-solid interfaces, seeks to understand the underlying injection/annihilation kinetic mechanism of Oi defects at interfaces between binary oxides (TiO2 and ZnO) and both gases and liquid water. It also introduces novel surface cleaning …
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Vertical motions in orographic clouds over the Payette River Basin and their impact on cloud liquid water content: Results from SNOWIE
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-12-04 without embargo terms
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Experimental determination of the flow parameters involved in moisture migration through fiberglass insulation materials
… and surface tension forces in the migration of liquid water through fiberglass insulation materials. Straightforward experimental procedures were devised to effectively isolate and quantify flow parameters considered important in describing the flow mechanisms involved. The study was conducted …
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Measurement of snowpack properties using active FM-CW microwave systems
… system, in a research mode, to remotely sense water equivalence and liquid water content of snowpacks. A three-component "electrical path length" dielectric mixture model is described which accounts for the microwave system response as a function of operating frequency, snow density and depth …
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Characterizing water-metal interfaces and machine learning potential energy surfaces
… dynamical, and electronic properties of liquid water next to prototypical metals including platinum, graphite, and graphene. Our results are built on Born-Oppenheimer molecular dynamics (BOMD) generated using density functional theory (DFT) which explicitly include van der Waals (vdW) …
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Green chemistry : dense carbon dioxide and water as environmentally benign reaction media
… vinyl ketone (MVK) was studied in an scCO₂/liquid water environment. Nitrogen chemistry, specifically the synthesis of nitrogen heterocycles from amines, was also studied in scCO₂ and scCO₂/liquid water systems. The objective of studying the Diels-Alder cycloaddition of …
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Selective oxidation of methane in a trickle bed reactor over a platinum-based catalyst
… such as homogeneous gas-phase, homogeneous liquid partial oxidation and heterogeneous catalytic partial oxidation, none of them were deemed successful for commercialization due to either the use of expensive reagents such as H2O2 and H2SO4, low yields and conversions, or inefficient system …
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Density-functional Theory Applied To Problems In Catalysis And Electrochemistry
We study the structure and energetics of water molecules adsorbed at ceria (111) surfaces below one monolayer coverage using density-functional theory. The results of this study provide a theoretical framework for interpreting recent experimental results on the redox properties of water at ceria …
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A multi-parameter approach to exoplanet habitability
… is suitable for the presence of surface liquid water and enough surface gravity to sustain an atmosphere. With the ever-increasing number of detected exoplanets, we might end up with hundreds of planets that suit these criteria and are accordingly all equally likely to host life. …
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A multi-parameter approach to exoplanet habitability
… is suitable for the presence of surface liquid water and enough surface gravity to sustain an atmosphere. With the ever-increasing number of detected exoplanets, we might end up with hundreds of planets that suit these criteria and are accordingly all equally likely to host life. …
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