Sökning: "thought experiments"

Visar resultat 16 - 20 av 113 avhandlingar innehållade orden thought experiments.

  1. 16. In the wake of a bird - Quantifying aerodynamic performance of avian flight

    Författare :Marco Klein Heerenbrink; Evolutionär ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; animal flight; flight performance; gliding; powered flight; wing morphology; aerodynamics; biomechanics; birds; jackdaw; Corvus monedula; wind tunnel; PIV;

    Sammanfattning : Flight is an expensive form of locomotion, but also offers the ability to travel great distances at relatively low cost. Birds have developed various adaptations for optimizing flight performance. The main aim of this thesis is to identify how morphological variables in birds affect aerodynamic drag and flight performance. LÄS MER

  3. 17. Pathogen-host interactions at the surface of Streptococcus pyogenes

    Författare :Patrik Nyberg; Infektionsmedicin; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Infektioner; Infections; C3a; LL-37; antimicrobial peptide; GRAB; alpha-2-macroglobulin; proteolysis; SpeB; internalization; virulence; protein F1; Streptococcus pyogenes; fibronectin;

    Sammanfattning : The bacterial surface can be thought of as the interface where pathogenic bacteria encounter the human host. Interactions between bacterial surface proteins and human proteins are important determinants of the eventual outcome of infection. LÄS MER

  4. 18. Heritable epigenetic responses to environmental challenges : Effects on behaviour, gene expression and DNA-methylation in the chicken

    Författare :Daniel Nätt; Per Jensen; Adroaldo Zanella; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Phenotypic variation within populations is a crucial factor in evolution and is mainly thought to be driven by heritable changes in the base sequence of DNA. Among our domesticated species we find some of the most variable species on earth today. LÄS MER

  5. 19. Functional aspects on the Epstein-Barr virus nuclear antigen 5

    Författare :Martin Dufva; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Epstein-Barr Virus; EBV; B-cell; transformation; cDNA array; polyadenylation; transcription; cell cycle; apoptosis; two-hybrid system.;

    Sammanfattning : The Epstein-Barr virus (EBV) infects resting B-cells. This leads to an EBV driven transformation of the resting B-cell into a cell with an activated B-cell phenotype that proliferates indefinitely in vitro. Epstein-Barr Nuclear antigen 5 (EBNA5) is one out of six EBV encoded protein involved in transformation of resting B-cell. LÄS MER

  7. 20. Development of new NMR techniques and the structure of the N-terminal domain of Escherichia coli DnaB helicas

    Författare :Johan Weigelt; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :NMR spectroscopy; DnaB; helicase;

    Sammanfattning : New techniques applicable in biomolecular nuclear magnetic resonance (NMR) spectroscopy were developed. The three-dimensional structure of the N-terminal domain of Escherichia coli DnaB helicase was determined at atomic resolution using heteronuclear multidimensional NMR techniques. LÄS MER