Sökning: "Björn Önfelt"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden Björn Önfelt.

  1. 1. Chiral Ruthenium Dipyrodiphenazine Complexes: DNA Binding and Excited State Relaxation

    Författare :Björn Önfelt; Chalmers University of Technology; []
    Nyckelord :polarization spectroscopy; DNA-probe; dppz; excited-state relaxation; intercalation; solvent relaxation; DNA-threading;

    Sammanfattning : Ruthenium complexes with aromatic ligands have been extensively studied due to their interesting photophysical properties, including photophysics and electron transfer upon interaction with nucleic acids. For example, the broad absorption spectrum makes them suitable as antenna molecules in photochemical reaction systems and their ability to accept or donate electrons in their excited state could have potential in opto-electronical devices. LÄS MER

  2. 2. DNA binding properties and femtosecond dynamics of [Ru(phen)₂dppz]²+ systems

    Författare :Björn Önfelt; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; DNA-threading; intercalation; light-switch; linear dichroism; solvent relaxation; absorption anisotropy; polarized light; femtosecond spectroscopy;

    Sammanfattning : .... LÄS MER

  3. 3. NK Cell Cytotoxicity at the Single Cell Level

    Författare :Ludwig Brandt; Björn Önfelt; Fredrik Bergh Thorén; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Biologisk fysik; Biological Physics;

    Sammanfattning : Natural killer (NK) cells are innate immune cells with the ability to recognize and eliminate virally infected cells and cancer cells without prior sensitization. There is a functional heterogeneity between individual NK cells, where some NK cells are more efficient at killing cancer cells than others. LÄS MER

  4. 4. Development of Microchip-based Assays to Study Immune Cell Interactions at the Single Cell Level

    Författare :Karolin Guldevall; Björn Önfelt; Hjalmar Brismar; Antonio Barragan; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Bioengineering; Bioteknik;

    Sammanfattning : Immune cell populations are constantly divided into smaller and smaller subsets defined by newly emerging cellular markers. However, there is a growing awareness of the functional heterogeneities in between cells even within small populations, in addition to the heterogeneity over time. LÄS MER

  5. 5. Single Cell Investigations of the Functional Heterogeneity Within Immune Cell Populations : a Microchip-based Study

    Författare :Karolin Guldevall; Björn Önfelt; Hjalmar Brismar; Carsten Watzl; KTH; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; MEDICAL AND HEALTH SCIENCES; Biological Physics; Biologisk fysik;

    Sammanfattning : Immune cell populations are constantly divided into smaller and smaller subsets defined by newly emerging cellular markers. However, there is a growing awareness of the functional heterogeneities in between cells even within small populations, in addition to the heterogeneity over time. LÄS MER