Sökning: "autofluorescence"

Visar resultat 11 - 15 av 24 avhandlingar innehållade ordet autofluorescence.

  1. 11. Fluorescence-based Transient State Monitoring for biomolecular, cellular and label-free studies

    Författare :Johan Tornmalm; Jerker Widengren; Maria Garcia Parajo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biological Physics; Biologisk fysik; Fysik; Physics;

    Sammanfattning : Fluorophore blinking dynamics are highly sensitive to the local environment and can be used as an additional readout parameter to increase the information gained from existing fluorescence techniques.The origin of these blinking patterns are photophysical transitions to and from a manifold of non-luminescent states. LÄS MER

  3. 12. On the use of light for the characterization and treatment of malignant tumours

    Författare :Claes af Klinteberg; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diffusion equation; Aminolevulinic acid; Protoporphyrin IX; Photodynamic therapy; Fluorescence spectroscopy; Fluorescence imaging; Laser-Doppler perfusion imaging; Atom- och molekylärfysik; Atomic and molecular physics; Multiple scattering; Tissue optics; Tissue optical properties; Fysicumarkivet A:1999:Klinteberg;

    Sammanfattning : Some aspects on the use of light for tissue characterization and treatment of malignant tumours are discussed within this thesis. The work presented aims at improving optical techniques for tissue characterization, especially to detect malignant and pre-malignant lesions. LÄS MER

  4. 13. The relation between the supramolecular structure of cellulose and its hydrolysability

    Författare :Ausra Peciulyte; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose I; SHG; Cellulases; CARS; Imaging; Trichoderma reesei; MPEF; CP MAS 13C-NMR; Secretomics;

    Sammanfattning : The liberation of fermentable sugars from cellulosic biomass during enzymatic hydrolysis is often incomplete. One of the factors limiting the efficiency of enzymatic hydrolysis is the structural properties of cellulose. LÄS MER

  5. 14. Single-cell methodologies for ecological and metabolic mapping of mixotrophic microeukaryotes

    Författare :Javier Florenza; Stefan Bertilsson; Alexandra Z. Worden; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; mixotrophy; single-cell;

    Sammanfattning : Mixotrophy in aquatic protists is pivotal for our understanding of aquatic microbial food web dynamics. This thesis is centered around aquatic unicellular mixotrophs, and comprises three methodological approaches aimed to tackle mixotroph ecology at single-cell resolution: the identification of actively feeding mixotrophs in natural samples, the determination of specific interactions among mixotrophs and bacterial prey, and the profiling of two distinct mixotrophic populations based on the gene expression of their constitutive individuals. LÄS MER

  7. 15. Optical spectroscopy and fluorescence imaging for cancer diagnostics

    Författare :Pontus Svenmarker; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biomedical optics; Diffuse-reflection spectroscopy; Upconverting nanoparticles; Inverse problem; Fluorescence; Tomography; Imaging; Scattering media; Photon migration; Fysicumarkivet A:2012:Svenmarker;

    Sammanfattning : This work presents optical methods for diagnosing cancer. A complementary method for diagnosing eye cancer was investigated using a technique developed within this work named transscleral optical spectroscopy (TOS). LÄS MER