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 64 for “"Puff"”.
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Design of the gas-puff imaging diagnostic for Wendelstein 7-X
… study this turbulence, we are designing a "gas-puff imaging" diagnostic to install onto the Max Planck Institute of Plasma Physics's Wendelstein 7-X (W7-X), which is currently the world's most advanced and largest stellarator. This diagnostic employs a fast-camera to observe a localized puff of …
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Study on the Feasibility of Nitrogen Huff-N-Puff in Heavy Oil Reservoirs
… oil making it possible for nitrogen (N2) Huff-n-Puff to be applied. Therefore, this study is to confirm the ability of nitrogen to form foamy oil and the feasibility of nitrogen Huff-n-Puff in relatively deep heavy oil reservoirs. This study includes three types of tests. The first category is …
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Chemical treatment and gas huff-n-puff for enhanced oil recovery in oil shale reservoirs
… the effect of chemical treatment, gas huff-n-puff, and/or both on EOR in shale oil reservoirs. Surfactant treatment on shale was studied. Static adsorption experiments were performed to investigate the adsorption behavior of surfactant on shale samples. An additive model was built to estimate …
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Comparison of edge turbulence velocity analysis techniques using Gas Puff Imaging data on Alcator C-Mod
… two methods for analyzing data from the Gas Puff Imaging diagnostic on Alcator C-Mod have been used. One uses temporal and spatial Fourier analysis to obtain wavenumber-frequency spectra, from which a phase velocity is computed [1, 2]. The other is based on time-delay cross-correlation of …
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Studies of Edge Fluctuations of Negative Triangularity Plasma on TCV using a New Gas-Puff Imaging Diagnostic
… in negative δ plasmas on TCV using Gas-Puff Imaging (GPI). GPI measures the spatially-resolved edge fluctuations by imaging atomic spectral-line emission from a local neutral gas puff. In collaboration with the TCV team at EPFL, a new GPI system was installed at TCV and has been …
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Development and demonstration of a high-performance Gaussian puff model for nuclear emergency training scenarios in unity game engine
… explores the development of this Gaussian puff model capable of calculating high-resolution radionuclide deposition maps and is demonstrated in an interactive training application.
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Monitoring for Enhanced Gas and Liquids Recovery from a CO2 'Huff-and-Puff' Injection Test in a Horizontal Chattanooga Shale Well
Permanently sequestering carbon dioxide (CO2) in gas-bearing shale formations is beneficial in that it can mitigate greenhouse gas emissions as well as enhance gas recovery in production wells. This is possible due to the sorption properties of the organic material within shales and their greater …
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Measurement and Analysis of Cigarette Smoke Exposure and Smoking Behavior Using Wearable Sensors
… biomarkers of cigarette smoke exposure, puff topography devices, and, recently, wearable sensors. However, these methods have few limitations, such as recall biases or digit preference in self-reporting. Biomarkers are objective and accurate, but they are expensive and not feasible for …
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Comparison of Three Methods for Measuring Smoking Behavior
… of individuals' smoking behavior (i.e., puff topography), including measuring puff number, volume, duration, and inter-puff interval (IPI) via mouthpiece-based, computerized devices. For example, puff topography measurement has been used to study smoking cessation medications, as well as …
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The effect of two novel C-type lectins, Ba100 and Ba25, isolated from the venom of the puff adder, Bitis arietans on T lymphocyte proliferative responses
Includes abstract. Includes bibliographical references (p. 233-318).
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Data Analytics of Wettability Alteration with Surfactants in Carbonate Reservoirs
… reservoirs. An effective surfactant huff-puff application design requires comprehensive guidelines about where, how, and when this method could be applied. Besides, traditional methods to design an effective application and optimize surfactant performance are dependent on extensive …
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An Experimental Study of Momentum-Driven Unsteady Jets
… A type of unsteady jet is the turbulent puff which is a momentum driven jet in which fluid is ejected from a jet orifice intermittently. Common examples of turbulent puff like jets are coughs and volcanoes. The studies on momentum driven unsteady jets have primarily focused on single …
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High-resolution optical analyses of inositol 1,4,5-trisphosphate receptors and the Ca²⁺ puffs they evoke
… ([Ca²⁺]<sub>c</sub>), known as Ca²⁺ puffs, which arise from the coordinated opening of a few IP₃Rs within a cluster. IP₃R clusters that are immobilised near to the plasma membrane are preferentially licensed to respond to IP₃ with Ca²⁺ puffs. Ca²⁺ puffs can regulate local Ca²⁺ sensors …
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Mechanisms of Copper-Dependent Notochord Formation in Zebrafish
… in notochord and vascular morphogenesis, <italic>puff daddy</italic>gw1. Subsequent work demonstrated that the <italic>puff daddy</italic>gw1 phenotype results from loss of zebrafish fibrillin-2. Importantly, the notochords of <italic>puff daddy</italic>gw1 mutants are strikingly sensitized to …
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Fatigue and Smoking Relapse
… predict greater number of cigarettes smoked, puff velocity, smoking urges, smoking withdrawal, and shorter latency to first cigarette and inter-puff intervals. In addition, it was hypothesized that smoking deprivation would significantly moderate such relations. Participants in the current …
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The effect of food deprivation on cigarette smoking in females
… topography indicated that the time to first puff was significantly greater in the non-deprived condition (p = .03), while the sum of the interpuff intervals (p = .02) and the time to removal from the last puff were greater in the food-deprived condition (p = .03). The total time total smoking …
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Production Analysis and Enhancement in The Unconventional Tight Formations
… the advantages of gas flooding and gas huff-n-puff is also brought up and tested. This study introduced and simulated a multi-well adaptive asynchronous CO2 Huff-and-Puff which combines the gas flooding and gas huff-n-puff for well groups which is more effective for the unconventional tight oil …
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Detection and localization of aerosol releases from sparse sensor measurements
… diffusion plus transport according to a Gaussian puff model. We derive optimal inference algorithms utilizing sparse sensor measurements, provided the model parameterization is known precisely. The primary assumptions are that the mean wind field is deterministically known and that the Gaussian …
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Investigation of Asphaltene Instability Under Gas Injection in Unconventional Reservoirs and its Impact on Oil Recovery Performance
… including continuous and cyclic (huff-n-puff) modes. In the continuous mode, filter paper membranes which represent shale structure were utilized to demonstrate the severity of the asphaltene deposition rate under different scenarios. For the huff-n-puff mode, various Eagle Ford shale …
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Theoretical Studies of L-shell X-ray Line Polarization and M-shell X-ray Spectroscopic Emission from Highly Ionized Xenon Ions
… studied for lithography applications and Xe gas-puffs have proven to be efficient radiation sources. Consequently, a new M-shell Xe non-LTE model was constructed using atomic database calculations with the Flexible Atomic Code (FAC) and is presented in this dissertation. From this new model, …
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