Search for dissertations about: "high pressures"
Showing result 1 - 5 of 404 swedish dissertations containing the words high pressures.
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1. Microfluidics at High Pressures : Understanding, Sensing, and Control
Abstract : This thesis explores understanding, sensing, and control in high-pressure microfluidics. The high-pressure regime allows fluids to be forced through narrow channels at substantial speed and creates conditions for fluids of high density and low viscosity—features desired in flow-based chemical analyses. READ MORE
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2. Experimental Study of some Potassium and Sodium Bearing Aluminosilicates at High Temperatures and High Pressures
Abstract : This dissertation presents the results of a high-temperature and high-pressure experimental study of some abundant aluminositicates, which are the main repositories for the two geochemically important elements, sodium and potassium, in the Earth's crust. Phase transitions of end member alkali feldspars and jadeite clinopyroxene are studied at high and ultrahigh pressures corresponding to the conditions between the transition zone and the deep Earth's lower mantle. READ MORE
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3. Mössbauer spectroscopy under high pressures and temperatures
Abstract : Iron plays a very important role in Earth materials. 57Fe- Mössbauer spectroscopy provides valuable information on the oxidation state and the near surrounding of iron atoms in crystal structures. READ MORE
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4. High-Pressure Microfluidics
Abstract : In this thesis, some fundamentals and possible applications of high-pressure microfluidics have been explored. Furthermore, handling fluids at high pressures has been addressed, specifically by creating and characterizing strong microvalves and pumps.A variety of microstructuring techniques was used to realize these microfluidic devices, e.g. READ MORE
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5. Miniaturized fluid system for high-pressure analytics
Abstract : High-pressure chemistry can be used to determine the contents of blood or water samples and to discover new chemistries. However, working with chemistry at pressures of many tens, or even hundreds, of bars often requires expensive and stationary equipment, such as autoclaves or chromatographic systems like high-performance liquid chromatography (HPLC). READ MORE