Search for dissertations about: "Polarized light microscopy"

Showing result 1 - 5 of 22 swedish dissertations containing the words Polarized light microscopy.

  2. 1. Enamel of primary teeth - morphological and chemical aspects

    Author : Nina Sabel; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Demineralization; Enamel; Enamel hypoplasia; Microradiography; Mineralization; Neonatal line; Polarized light microscopy; Scanning electron microscopy; Secondary ions mass spectrometry; X-ray microanalysis;

    Abstract : Enamel is one of the most important structures of the tooth, both from a functional and esthetic point of view. Primary enamel carries registered information regarding metabolic and physiological events that occurred during the period around birth and the first year of life. READ MORE

  4. 2. DNA Electrophoresis in Polymer Solutions. Separation Mechanisms studied by Fluorescence and Linear Dichroism Spectroscopy

    Author : Christina Carlsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; mutation detection; orientation; YOYO; DNA electrophoresis; polarized light spectroscopy; optical probing; polymer solutions; fluorescence microscopy; PNA; binding modes;

    Abstract : Capillary electrophoresis of DNA in polymer solutions is a promising technique for separation of DNA molecules according to size. The primary aim of the work presented in this thesis was to get a better understanding of the electrophoretic separation mechanism in these media by studying the DNA migration behavior during electrophoresis in both entangled and non-entangled polymer solutions using linear dichroism spectroscopy and fluorescence video microscopy. READ MORE

  5. 3. DNA Electrophoresis: Optical Probing and Microscopic Imaging to Understand Separation Mechanisms

    Author : Anette Larsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optical probing; YOYO; polarized light spectroscopy; DNA electrophoresis; DAPI; binding modes; helix alignment; fluorescence microscopy;

    Abstract : The aim of this work was to combine spectroscopic, mobility, and fluorescence microscopy studies to elucidate the mechanisms behind DNA electrophoresis, a method to separate DNA molecules according to size. The microscopy studies require staining of the DNA with a fluorescent dye. READ MORE

  6. 4. Groove-binding Unsymmetrical Cyanine Dyes for DNA Applications

    Author : Maja Eriksson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polarized spectroscopy; bacteriophage T5; cryo-transmission electron microscopy; dynamic light scattering; DNA; intercalation; cyanine dyes; groove-binding; fluorescence spectroscopy; gel electrophoresis;

    Abstract : This work focuses on interactions between DNA and a group of newly developed unsymmetrical cyanine dyes. The aim of the work was to discover fluorescent dyes that can be used in biophysical studies of natural DNA where minimum perturbation of the DNA-helix is essential, where a slow dissociation rate of the dyes is needed and where the ionic strength is an important parameter. READ MORE

  7. 5. Scanning Tunneling Microscopy Induced Luminescence Studies of Semiconductor Nanostructures

    Author : Ulf Håkanson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; transmission electron microscopy TEM ; III-V semiconductors; low-dimensional structures; nanostructures; single dot spectroscopy; Stranski-Krastanow; quantum dot QD ; Semiconductory physics; polarization; ordering; InP; GaInP; photon mapping; scanning tunneling microscopy STM ; scanning tunneling luminescence STL ; Halvledarfysik; Fysicumarkivet A:2003:Håkanson;

    Abstract : This thesis treats scanning tunneling luminescence (STL) investigations of semiconductor nanostructures. The STL technique combines scanning tunneling microscopy (STM) with detection of photons, induced by the tunneling electrons. The high spatial resolution in STM and the local excitation allow for optical investigations on the nanometer-scale. READ MORE