Sökning: "shape factor"

Visar resultat 1 - 5 av 211 avhandlingar innehållade orden shape factor.

  1. 1. Hot wire and PIV studies of transonic turbulent wall-bounded flows

    Författare :Timmy Sigfrids; KTH; []
    Nyckelord :fluid mechanics; compressible flow; turbulence; boundary layer; hot-wire anemometry; PIV; shock wave boundary layer interaction; shape factor;

    Sammanfattning : The compressible turbulent boundary layer developing over atwo-dimensional bump which leads to a supersonic pocket with aterminating shock wave has been studied. The measurements havebeen made with hot-wire anemometry and Particle ImageVelocimetry (PIV). LÄS MER

  3. 2. Functions of platelet-derived growth factor-A during organogenesis

    Författare :Linda Karlsson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; platelet-derived growth factor-A; knockout; mouse organogenesis; epithelial-mesenchymalinteractions; skin; hair follicles; CNS; lung; gastrointestinal villus;

    Sammanfattning : The formation of organs during embryonic development is calledorganogenesis. This process is regulated by the genes residing in the genome. LÄS MER

  4. 3. Experimental Studies of BMP Signalling in Neuronal Cells

    Författare :Susanna Althini; Ted Ebendal; Carl-Henrik Heldin; Ingrid Strömberg; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; Bone Morphogenetic Protein BMP ; Growth Differentiation Factor 10 GDF10 ; Aktivne-receptor Like Kinase 2 ALK2 ; Tyrosine Hydroxylase TH ; Neurotrophic Factor; Neurite Outgrowth; Hippocampus; Catecholamine; PC12; Sympathetic Ganglia; Substantia Nigra SN ; Gene Targeting; Neurovetenskap; Neurology; Neurologi; Developmental Neurosciences; Medicinsk utvecklings- och neurobiologi;

    Sammanfattning : The developing nervous system depends largely on extracellular cues to shape its complex network of neurons. Classically, neurotrophins are known to be important mediators in this process. LÄS MER

  5. 4. Modeling the Microstructure Evolution During and After Hot Working in Martensitic Steel

    Författare :Nima Safara Nosar; John Ågren; Göran Engberg; Hans-Olof Andrén; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Modeling; Martensitic steel; Carbides; Carbide size distribution; Carbide volume fraction; Carbide shape factor; Modellering; Martensitiskt stål; karbider; karbidstorleksfördelning; karbidvolymfraktion; karbidformfaktor; Teknisk materialvetenskap; Materials Science and Engineering;

    Sammanfattning : In this study, the goal is to predict the microstructure evolution during and after the hot working of a martensitic stainless steel with 13% chromium using a physically-based model in the form of a MATLAB toolbox. This model is based on dislocation density theory and consists of coupled sets of evolution equations for dislocation, vacancies, recovery, recrystallization, and grain growth. LÄS MER

  7. 5. Protein-RNA interplay in translation. Structural studies of RRF, SelB and L1

    Författare :Maria Selmer; Biokemi och Strukturbiologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular biophysics; Molekylär biofysik; crystallography; mimicry; translation factor; L1; SelB; protein synthesis; RRF;

    Sammanfattning : Translation is a central biological process, that is catalysed by a machinery consisting of RNA and protein. In this thesis three different protein components of the bacterial protein synthesis system have been structurally studied. LÄS MER