Search for dissertations about: "fluorescence anisotropy"

Showing result 21 - 25 of 32 swedish dissertations containing the words fluorescence anisotropy.

  2. 21. Excitation and Ground-State Properties of Natural and Modified Nucleic Acid Bases

    Author : Anders Holmén; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ab initio; linear dichroism; DFT; transition moment; tautomerism; structure; IR; spectra; DNA bases;

    Abstract : 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. READ MORE

  4. 22. Multimodal Imaging of Anisotropic Hierarchical Materials

    Author : Adrian Rodriguez Palomo; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biomaterials; Hierarchical Materials; Multimodal Imaging; Birefringence; X-Ray Scattering;

    Abstract : The thesis is focused on studying the nanostructure of natural and synthetic hierarchical materials with biological applications, using X-ray scattering imaging and birefringence microscopy. The term "hierarchical materials" is used for structures composed of sub-units organised in different length scales that create the building blocks for the next level. READ MORE

  5. 23. Regulation of Aquaporins by Proteins, Metal ions and Phosphate groups

    Author : Stefan Kreida; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aquaporin-2; aquaporin-0; calmodulin; LIP5; phosphorylation; calcium; zinc; protein-protein interactions; aquaporin regulation; trafficking; gating;

    Abstract : Aquaporins (AQPs) are membrane-bound intrinsic water channels that allow the passive diffusion of water and small solutes across cellular membranes. There are 13 highly conserved isoforms of these channels in human, which differ in specificity, regulation and localisation in cells and tissues. READ MORE

  6. 24. Energy Transfer Patterns in Photosynthetic Antenna System of Purple Bacteria

    Author : Susan Hess; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optics; Electromagnetism; mykologi; virologi; bakteriologi; photosynthesis; Mikrobiologi; Picosecond and femtosecond spectroscopy; energy transfer; purple bacteria.; Microbiology; bacteriology; mycology; virology; acoustics; Elektromagnetism; optik; akustik; Fysicumarkivet A:1997:Hess;

    Abstract : Steady state and time-resolved absorption and fluorescence spectroscopy have been used to investigated the energy transfer in photosynthetic purple bacteria. Picosecond light pulses were used in measurements of Rb. READ MORE

  7. 25. Energy migration and charge formation in conjugated polymers

    Author : Yuri Zaushitsyn; Kemisk fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; magnetic resonance; relaxation; spectroscopy; Kondenserade materiens egenskaper:elektronstruktur; egenskaper elektriska; magnetiska och optiska ; supraledare; magnetisk resonans; spektroskopi; supraconductors; magnetic and optical properties; electrical; energy transfer; Physics; Fysik; Condensed matter:electronic structure; transient absorption spectroscopy; conjugated polymer; charge photogeneration;

    Abstract : The main part of the thesis is concerned with charge photogeneration in conjugated polymers. MeLPPP and POMeOPT films were investigated by transient absorption spectroscopy using different excitation photon energies and light intensities with and without an external electric field. READ MORE