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 12 of 12 for “"Dissolved carbon dioxide"”.
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CONTROL OF CAVITATION USING DISSOLVED CARBON DIOXIDE FOR DAMAGE-FREE MEGASONIC CLEANING OF WAFERS
This dissertation describes the finding that dissolved carbon dioxide is a potent inhibitor of sonoluminescence and describes the implications of the finding in the development of improved megasonic cleaning formulations. Megasonic cleaning, or the removal of contaminants particles from wafer …
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Changes in Water Quality as Related to Retention Time Within Red Rock Reservoir, Iowa, Summer 1972
… data recorded. Specific conductance, pH, dissolved carbon dioxide, dissolved oxygen and alkalinity were determined in the field. Samples were refrigerated and returned to the laboratory for the determination of nitrates, phosphates and sulfates. Findings. Weak thermal stratification …
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The impact of carbon dioxide on freshwater fish behaviors
… be impacted by acidification due to increases in dissolved carbon dioxide (CO2). Recent work in the marine environment suggests that increased CO2 levels due to climate change can negatively affect a fish’s ability to detect predators, home to natal environments, and perform aerobically. The …
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Geochemical methods for evaluating the origin and evolution of ground water in volcanic rocks
… Stable isotopes of oxygen, hydrogen, carbon and sulfur were successfully used to delineate recharge zones and identify solute sources. Laboratory study of water-rock interactions established the source of solutes and the nature of the chemical reactions that control ground-water …
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Development of enhanced performance luminescence-based optical sensor systems for single-analyte and multii-analyte applications
… oxygen concentration in breath, measurement of dissolved oxygen and dissolved carbon dioxide, and the simultaneous measurement of oxygen and temperature using a single sensor element.
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An Isotopic Analysis of Carbon Dynamics in Sphagnum Peat
Methane and carbon dioxide produced in peatlands can be held temporarily in dissolved surface waters and accessible to aquatic plants. The primary peat building plant in northern peatlands, Sphagnum moss, grows in these dissolved carbon rich waters. Understanding Sphagnum carbon cycles is key for …
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Droplet levitation and underwater plastron restoration using aerophilic surface textures
… that incorporate a cheap catalyst, manganese dioxide. We perform drag reduction experiments under turbulent flow conditions in a Taylor-Couette cell which show that more than half of the drag increase ensuing from plastron collapse can be recovered spontaneously using this method. In the …
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Surfactant aspects of corrosion inhibition
… atmospheric conditions and in the presence of dissolved carbon dioxide and hydrogen sulphide. The measurements were repeated in the presence of dodecylbenzyldimethylammonium chloride and I-aminoethyl-2-(8- heptadecenyl)-2-imidazoline acetate, which are thought of as model corrosion inhibitors. …
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Regulation of the carbon-concentrating mechanism in Chlamydomonas reinhardtii
… is often limited by the availability of dissolved carbon dioxide (CO$_{2(aq)}$). To overcome the slow diffusion of CO$_{2(aq)}$ as well as kinetic limitations of the primary photosynthetic carboxylase, Rubisco, carbon concentrating mechanisms (CCMs) have evolved in many aquatic …
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Measurement of Dissolved Gas Concentrations in Natural Waters Utilizing an In-Situ, Membrane Inlet, Linear Quadrupole Mass Spectrometer
… (GSV) and ship's cables to monitor a suite of dissolved gases and volatile organic compounds in saltwater and freshwater environments. Spectrometer data in Lake Maggiore, Florida were acquired at a rate of 0.7-3.6 seconds/sample for 2-3 hours. The resulting multi-analyte spectrometer data were …
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Ground-water geology along the northwest foot of the Blue Ridge between Arnold Valley and Elkton, Virginia
… is chiefly a National Forest preserve. Cambriancarbonate rocks and fine-grained elastics underlie the relatively level areas between the mountains and the major subsequent streams near their base. A thick unconsolidated mantle which slopes gently away from the mountains conceals bedrock over …