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Visar resultat 1 - 5 av 1132 avhandlingar som matchar ovanstående sökkriterier.
1. Modélisation théorique de la spectroscopie d'actinides des solvatés
Sammanfattning : The framework of this PhD is the interpretation of Nuclear Magnetic Relaxation Dispersion experiments performed on solvated U4+, NpO2+ and PuO22+, which all have an f2 configuration. Unexpectedly the two actinyl ions have a much higher relaxivity than U4+. LÄS MER
2. Sparse Modeling of Grouped Line Spectra
Sammanfattning : This licentiate thesis focuses on clustered parametric models for estimation of line spectra, when the spectral content of a signal source is assumed to exhibit some form of grouping. Different from previous parametric approaches, which generally require explicit knowledge of the model orders, this thesis exploits sparse modeling, where the orders are implicitly chosen. LÄS MER
3. Excitation and Ground-State Properties of Natural and Modified Nucleic Acid Bases
Sammanfattning : The nucleic acid bases are the carriers of genetic information in DNA and RNA. They are also the main chromophores of nucleic acids and determine their optical properties and sensitivity to UV radiation. LÄS MER
4. Mean Wind and Turbulence Conditions in the Boundary Layer above Forests
Sammanfattning : As wind turbines have grown, new installation areas become possible. Placing wind turbines in forested landscapes introduce uncertainties to the wind resource estimation. LÄS MER
5. Theoretical Studies on Vibrationally Resolved Optical Spectra of Polycyclic Aromatic Molecules
Sammanfattning : Polycyclic aromatic molecules are of great interest owing to their many important applications in chemistry and have therefore been the focus of investigations for over half a century with spectroscopic techniques. This thesis is devoted to the modeling of vibrationally resolved optical spectra of polycyclic aromatic molecules. LÄS MER
