Search for dissertations about: "Y3"
Showing result 1 - 5 of 6 swedish dissertations containing the word Y3.
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1. Registered nurses' research use : A national survey on extent, patterns, intentions and associated factors in undergraduate education and the first years of clinical practice
Abstract : The gap between research and practice is well-known and has been addressed globally.The application of research-based knowledge in clinical practice has the potential to improve care quality and patient safety. READ MORE
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2. Solid state proton conductors: hydrated perovskites and hydrated alkali thio-hydroxogermanates
Abstract : This thesis concerns experimental studies of hydrated perovskites and hydrated alkali thio-hydroxogermanates, two classes of solid state proton conductors which are promising to be used as electrolytes in future intermediate temperature (200-500°C) fuel cells.This is an attractive temperature range for many applications but for which today's available electrolytes do not show satisfactory performance. READ MORE
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3. Dynamic local structural symmetries and luminescence properties of the yellow emitting phosphor Ce3+-doped Y3Al5O12
Abstract : This thesis centers on investigations of the local structure and vibrational properties of the oxide garnet Y3Al5O12 (YAG), which when substituted with a few percent of the activator ion Ce3+ to replace Y3+ (Y3−xCexAl5O12, YAG:Ce3+) is one of the most important phosphors for solid state lighting. The study builds on a comprehensive analysis of the nature of the phonons and localized vibrational modes in YAG:Ce3+ and how these depend on the Ce3+ concentration and temperature and how they affect key optical properties, such as the intensity and frequency of the emitted light. READ MORE
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4. Functional Oxide Materials exhibiting Ionic Conductivity for Future Energy Conversion Needs
Abstract : Fuel cells are electrochemical devices that transform the chemical energy in hydrogen and oxygen into electrical energy at high efficiencies and produce only water vapour emissions. Materials with the perovskite or fluorite structure types are commonly employed as the ion conducting ceramic electrolyte membranes in intermediate and high temperature fuel cells. READ MORE
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5. Molecular Insight into Ion-Specific Interactions : Vibrational Sum Frequency Study of the Carboxylic Acid Moiety
Abstract : Ion specific effects at charged interfaces find numerous applications in colloidal sciences and play a vital role in many biological processes. Despite having been studied for over a century, starting with the work of F. Hofmeister in the 1880s, a comprehensive molecular understanding remains elusive. READ MORE
