Search for dissertations about: "degenerate transition"

Showing result 1 - 5 of 15 swedish dissertations containing the words degenerate transition.

  2. 1. Modeling Photofunctional Transition Metal Complexes

    Author : Iria Bolano Losada; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; density functional theory; earth-abundant; molecular dynamics; quantum chemistry; photosensitizer; photophysics; photochemistry; solar fuels; solar energy conversion; transition metal complexes;

    Abstract : Transition metal complexes play a crucial role in solar energy conversion. These coordination compounds have promising applications in dye-sensitized solar cells and photocatalysis, with particular interest in solar fuel production. READ MORE

  4. 2. Synthesis and Energy Transfer Studies of a Donor-Host-Acceptor Triad

    Author : Jerker Mårtensson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; orientation factor; self-assembly; porphyrin; cations; F #246; rster; dimer; donor-host-acceptor triad; energy transfer; degenerate transition; diaza-crown ether;

    Abstract : This dissertation describes the synthesis of a donor-host-acceptor triad, D-H-A, and its self-assembly into a well-ordered dimer. The energy transfer (EnT) properties of D-H-A as it is, in the presence of a variety of guest molecules and in the dimeric form are presented. READ MORE

  5. 3. Mechanisms of Mitochondria-Induced Brain Damage Following Ischemia and Hypoglycemia

    Author : Michel Ferrand-Drake; Lund Wallenberg Neurocentrum; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; cyclosporin A; neuronal death; calpain; caspase; mitochondrial permeability transition; necrosis; apoptosis; cerebral ischemia; hypoglycemia; Neurology; neuropsychology; neurophysiology; Neurologi; neuropsykologi; neurofysiologi;

    Abstract : Mechanisms of Mitochondria-Induced Brain Damage Following Ischemia and Hypoglycemia Following prolonged disruption of blood flow to the central nervous system (CNS), or energy deprivation by other means, such as hypoglycemia, some cells will inevitably degenerate. It has been, and still is, the subject of considerable debate and intense research on brain ischemia, as to the mode of cell death, i. READ MORE

  6. 4. Global bifurcations and chaotic dynamics in physical applications

    Author : Martín G. Zimmermann; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; Global bifurcations; Šil´nikov phenomenon; degenerate homoclinic orbit; onset of spatiotemporal chaos; heteroclinic cycles; orientation- and inclination-flip bifurcations; Kvantkemi; Quantum chemistry; Kvantkemi; Quantum Chemistry; kvantkemi;

    Abstract : The aim of this work has been to analyse global bifurcations arising in a laser with injectedsignal and in a catalytic reaction on a surface of Pt, from the point of view of dynamicalsystems theory.The 3-dimensional ordinary differential equation which models the laser was found to contain a homoclinic orbit to a saddle-focus equilibrium, what corresponds to the Šil´nikov phenomenon. READ MORE

  7. 5. Upconversion Detection for Improved Nonlinear Mid-infrared Spectroscopy in Flames

    Author : Rasmus Lyngbye Pedersen; Förbränningsfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; infrared; upconversion; degenerate four wave mixing; hydrogen cyanide; polarisation spectroscopy;

    Abstract : This thesis deals with the addition of upconversion detection to non-linear mid-infrared laser spectroscopy techniques. The techniques investigated here are degenerate four wave mixing (DFWM) and infrared polarization spectroscopy (IRPS). READ MORE