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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 26 for “"Inert Gases"”.
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Condensation in the Presence of Inert Gases
Made available in DSpace on 2015-05-12T17:04:32Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0006976.PDF: 5833253 bytes, checksum: c9cc4b5c492ac29a6f3bd7a3beae6bef (MD5) Previous issue date: 1953
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A transmission electron microscopy study of inert gases in silicon and iron
This thesis presents a study of inert gas inclusion in iron and silicon, as a result of ionimplantation. The effect of ion implantation conditions on the formation anddevelopment of inert gas bubbles within these solids has been explored, and the mobilityof these nanoscale bubbles during heating …
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Excitation processes in the positive column of electrical discharges in inert gases
The variation with the current i, of the intensity, I, of neon spectral lines emitted from low pressure positive column discharges has been studied as part of an investigation of excitation processes in these discharges. The results indicate that two-step excitation is important for many neon …
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Resting forearm blood-tissue lactate and gas exchange kinetics during supine leg exercise / by Peter Catcheside.
… closely the blood-tissue exchange kinetics of inert gases that have been reported in many organs during inert gas inhalation. Two mathematical models of forearm lactate uptake were developed, and three series of experiments were conducted to investigate the contribution and impact of passive …
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Theoretical and experimental analysis of the thermoacoustic refrigeration
… which uses resonant high amplitude sound in inert gases to pump heat will be described. It will be seen that without any moving parts, except the driver (speaker diaphragm), this refrigerator is as efficient as other refrigeration systems. An experiment is designed with all the major parts …
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Insight into chemical, biological, and physical processes in coastal waters from dissolved oxygen and inert gas tracers
… I use coastal measurements of dissolved O2 and inert gases to provide insight into the chemical, biological, and physical processes that impact the oceanic cycles of carbon and dissolved gases. Dissolved O2 concentration and triple isotopic composition trace net and gross biological …
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Insight into chemical, biological, and physical processes in coastal waters from dissolved oxygen and inert gas tracers
… I use coastal measurements of dissolved O₂ and inert gases to provide insight into the chemical, biological, and physical processes that impact the oceanic cycles of carbon and dissolved gases. Dissolved O₂ concentration and triple isotopic composition trace net and gross biological …
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A Model for the Combustion Retorting of Shale-Oil
… down through a bed of raw shale particles. Hot inert gases flow ahead of the wave and decompose the kerogen in the raw shale. Oil produced by this pyrolysis reaction is carried from the hot zone as a vapor, which condenses on cold shale particles and falls out the bottom of the bed as a liquid …
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Innovative hydrocarbons recovery and utilization technology using reactor-separation membranes for off-gases emission during crude oil shuttle tanker transportation and natural gas processing.
… oil shuttle tanker transportation. The emitted gases have a typical composition of 60 % N2, 10 % CO2, 5% O2, 5 % C3H8, 10% CH4, 5% C2H6 and 5 % higher hydrocarbons. As a result, various methods aimed to add value to GHG to produce valuable fuels and chemical feedstock are being developed. This …
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White Light Continuum for Broadband Nonlinear Spectroscopy
… early 1970s to the first observation of WLC in gases in the mid-1980s, much work has been devoted to developing a framework for understanding the complex nature of this phenomenon as well as discovering its utility in various applications. The main effort of this dissertation is to develop a WLC …
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IMPLEMENTATION OF NOVEL RECEPTOR-TRANSDUCTION CONCEPTS AND MATERIAL MORPHOLOGIES IN GAS SENSORICS
… is sensitive to both chemically active and inert gases. Its performance is modeled and optimization parameters are presented.
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Pulmonary diffusion limitation, V̇ /Q̇ mismatch and pulmonary transit time in highly trained athletes during maximal exercise
… 1-min-1respectively, while trace amounts of six inert gases were infused via a peripheral vein. Arterial blood samples, mixed expired gas samples and metabolic data were obtained. Observed alveolar arterial difference ([A-a]D0₂(0)was calculated according to the alveolar gas equation. Indices of …
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Patterns of soil maturation and mixing at the Apollo 16 landing site: surface soils
… Data for major element chemistry and trapped inert gases are assembled from the literature and used to infer the provenance of archetypical soils and kinship relationships of remaining surface samples. The hypothesis of maturation domination of inert gas variations is considered and its …
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An SEM surface study of nucleate pool boiling heat transfer to saturated liquid nitrogen reduced pressures from 0.1 to 0.9
… boiled was found not to be a result of adsorbed gases, but probably a result of impurities acquired on the surface that must be removed. Attempts to observe hysteresis is were unsuccessful. Hysteresis was found not to be a function of adsorbed inert gases. Data indicated that one mechanism of …
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A Computational Model of Inert Gas Mixing in the Lung
Inert gases are used as markers or contrast agents in experimental and imaging methods that measure lung function. The premise is that by analysing the expired concentrations of inert gas, or by quantifying their distribution from \textit{in vivo} imaging, information can be gained about the …
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Virpesinės spektrometrijos ir matricinės izoliacijos metodo taikymas molekulių su Silicio pakaitais struktūros tyrimams /
… these limitations molecule was isolated in inert media at low temperature and infrared absorption spectra recorded. Three different environments were employed, namely argon, neon, and nitrogen gases. The obtained experimental data show a complex band structure from which we cannot conclude …
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Damage Detection Methodologies For Structural Health Monitoring of Thin-Walled Pressure Vessels
… Center engineers. COPVs have been used to store inert gases like helium (for propulsion) and nitrogen (for life support) under varying degrees of pressure onboard the orbiter since the beginning of the Space Shuttle Program. After the Columbia accident, the COPVs were re-examined and different …
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Nucleate boiling from polymer coated surfaces.
… nucleation sites. Hysteresis caused by absorbed inert gases was ruled out due to the controlled atmosphere on the surface before the liquid covered the surface.</p> <p>Data was also taken at critical heat flux. The temperature difference between the boiling surface and the liquid pool was taken …
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In-line measurement of solibility of physical blowing agents in thermoplastic melts as related to extrusion foaming
… optimization. Solubility data of three different inert gases, CO_2, Ar and N_2, in polystyrene under different temperatures have been obtained. Overall, the results compare favorably with literature equilibrium data obtained with off-line methods. Solubility data of the same gases in polyethylene …
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