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Visar resultat 1 - 5 av 11 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Asymptotics of the Scenery Flow and Properties of the Fourier Dimension

    Författare :Fredrik Ekström; Matematik LTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis is about the scenery flow and the Fourier dimension.The scenery flow is a semiflow on the space of Borel probability measures on the interval [-1, 1] that have the origin in their support. The flow acts on such a measure by enlarging it, restricting it back to [-1, 1] and renormalising it to a probability measure. LÄS MER

  3. 2. Catalytic Converters for Automotive Exhaust Applications. Flow Dynamics, Mass Transfer and Optimization

    Författare :Fredrik Ekström; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TWC; optimization; exhaust; laboratory reactors; catalytic converter; catalysis; pressure drop; entrance effects; CFD; mass transfer; pulsations; flow distribution;

    Sammanfattning : In order to reduce emissions from vehicles powered by an internal combustion engine, an exhaust aftertreatment system is normally mounted on the engine. This aftertreatment system normally consists of one or several catalytic converters. LÄS MER

  4. 3. Flow dynamics of exhaust aftertreatment systems

    Författare :Fredrik Ekström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; catalytic converter; heat and mass transfer; pressure drop; exhaust; CFD; flow distribution;

    Sammanfattning : .... LÄS MER

  5. 4. X-ray characterization of PaPheOH, a bacterial phenylalanine hydroxylase

    Författare :Fredrik Ekström; Uwe H. Sauer; Edward Hough; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; PaPheOH; PheOH; PAH; phhA; phenylalanine hydroxylase; protein crystallography; a-actinin; microcrystal; ABD; CH-domain; Biokemi; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : Many human diseases are associated with the malfunction of enzymes in the aromatic amino acid hydroxylase family, e.g. phenylketonuria (PKU), hyperphenylalaninemia (HPA), schizophrenia and Parkinson's disease. LÄS MER

  7. 5. Epitaxial growth, structure, and thermoelectric properties of CaMn- and V-based oxides

    Författare :Erik Ekström; Per Eklund; Biplab Paul; Fredrik Eriksson; Nini Pryds; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Thin film; PVD; Oxides; Epitaxy; XRD;

    Sammanfattning : This thesis is focused on physical vapor deposition, epitaxy, and structural characterization of CaMnO3 and VO2. Environmentally friendly and abundant materials are important for energy savings in applications, e.g., thermoelectrics for waste-heat recycling and thermochromic materials for passive indoor-temperature regulation. LÄS MER