Sökning: "Fysikalisk biologi"

Visar resultat 11 - 15 av 70 avhandlingar innehållade orden Fysikalisk biologi.

  1. 11. Radiation-induced apoptosis in human lymphocytes : studies on expression, function and effects of different radiation qualities

    Författare :Annelie Meijer; Fabrizio Palitti; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Apoptosis; clonogenic survival; growth factors; chromosomal aberrations CA ; low dose-rate LDR ; linear energy transfer LET ; relative biological effectiveness RBE ; radio sensitivity; ataxia telangiectasia A-T ; Physical Biology; fysikalisk biologi;

    Sammanfattning : We are constantly exposed to radiation. Radiation causes damage to our cells. By the removal of damaged and unwanted cells, apoptosis is considered to be one of the most indispensable defence processes for a multi-cellular organism. LÄS MER

  3. 12. Mechanisms of formation and protection against oxidative DNA damage in vitro and in vivo

    Författare :Peter Svoboda; Ralf Morgenstern; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical Biology; fysikalisk biologi;

    Sammanfattning : Oxidative DNA damage has been linked to cancer and aging as well as other diseases. The aim of this thesis was to study the mechanisms for DNA damage generated in cells or in vitro systems by ionizing radiation or transition metals like iron ions. LÄS MER

  4. 13. Protein Dimensions and Interactions at Immune-Cell Contacts

    Författare :Victoria Junghans; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Immune cells, such as B and T cells, fight pathogens infecting the human body. To fulfil this function the immune cells need to form a contact during which different membrane proteins play an important role. LÄS MER

  5. 14. Aggregation behavior and peptide-lipid interaction in an amyloid model system

    Författare :Jon Pallbo Arvidsson; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amyloids; peptides; lipids; NACore; aggregation; fibrillation; crystallization; self-assembly; interaction;

    Sammanfattning : Proteins constitute a major component of living cells and are essential to their function. Sometimes proteins misfold or aggregate in abnormal ways, which can give rise to diseases. Amyloids are a special type of highly ordered protein aggregates made of long intermolecular beta-sheets stacked into fibrils. LÄS MER

  7. 15. A Microcalorimetric Study of Macrocyclic Complexes in Aqueous Solution

    Författare :Magnus Stödeman; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Aqueous Solution; Calixarene; Cyclodextrin; Vaporization; Macrocyclic compounds; Microcalorimetry; Kemi;

    Sammanfattning : The present work involves a microcalorimetric characterization of the interactions among macrocyclic compounds and aliphatic molecules in aqueous solution. The macrocyclic compounds used in the study are a-,b- and g-cyclodextrin and 25,26,27,28-tetrahydroxycalix[4]arene-5,11,17,23- tetrasulphonate. LÄS MER