Sökning: "class A"

Visar resultat 11 - 15 av 3430 avhandlingar innehållade orden class A.

  1. 11. Dynamics of seashore populations of Agrostis stolonifera, Festuca rubra and Poa irrigata

    Författare :Guðrún Á. Jónsdóttir; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Populationsekologi;

    Sammanfattning : The dynamics of tillers of natural populations of three cohabiting perennial grass species Agrostis stolonifera, Festuca rubra and Poa irrigata were studied for five years in a Baltic seashore meadow. A demographic approach based on numerical changes over time was used. LÄS MER

  3. 12. Interindividual differences in xenobiotic-metabolising enzymes : the human genetic factor

    Författare :Roman A McLellan; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The vast number of human xenobiotic-metabolising enzymes display interindividual variability that can alter the disposition of any compound metabolised by these enzymes, including environmental chemicals and many clinically used drugs. Both genetic and non-genetic factors affect the levels and activities of these enzymes. LÄS MER

  4. 13. Tipping the scales in cancer : novel mechanisms of inhibiting protein degradation

    Författare :Tatiana A Giovannucci; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Protein homeostasis (in short, ‘proteostasis’) requires the timely degradation of proteins to retain control on protein quality, amount and function. Two main proteolytic systems, the ubiquitin-proteasome system (UPS) and autophagy, complement each other to fulfill this regulatory role. LÄS MER

  5. 14. Histone deacetylases and their co-regulators in schizosaccharomyces pombe

    Författare :Rebecka A. Silverstein; Karl Ekwall; Anthony Wright; Fred Van Leeuwen; Södertörns högskola; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The DNA in every eukaryotic cell is wrapped around eight core histones to form the nucleosome. Therefore all events that involve DNA must also involve chromatin and nucleosomes. By regulating chromatin structure the cell can regulate the reactivity of the DNA. LÄS MER

  7. 15. Rock damage caused by underground excavation and meteorite impacts

    Författare :Ann Bäckström; Robert Zimmerman; John A Hudson; Flavio Lanaro; Pekka Särkkä; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Excavation Damage Zone EDZ ; Fracture analysis; Pre-existing fractures; Class II behaviour; 3D laser scanning; Impact fracturing; Geoengineering; Geoteknik;

    Sammanfattning : The intent of this thesis is to contribute to the understanding of the origin of fractures in rock. The man-made fracturing from engineering activities in crystalline rock as well as the fracturing induced by the natural process of meteorite impacts is studied by means of various characterization methods. LÄS MER