Sökning: "Bond type"

Visar resultat 1 - 5 av 187 avhandlingar innehållade orden Bond type.

  1. 1. Composite Action and Confinement Effects in Tubular Steel-Concrete Columns

    Författare :Mathias Johansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; connection; composite action; composite column; finite element analysis; bond; confined concrete; high-strength concrete; experiment; concrete-filled steel tube;

    Sammanfattning : Composite columns composed of concrete-filled steel tubes (CFT) have become increasingly popular in structural applications around the world. This type of column can offer many advantages, for instance, high strength, ductility, and large energy absorption capacity, as well as increased speed of construction, positive safety aspects, and possible use of simple standardized connections. LÄS MER

  3. 2. Effects of Steel Fibres on Cracking in Reinforced Concrete

    Författare :Anette M Jansson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; uniaxial tension test; Keywords: Self-compacting; characteristic crack width; fibre-reinforced; bond; tension stiffening; Digital Image Correlation; pull-out test;

    Sammanfattning : ABSTRACTAlthough it is well known that fibre reinforcement acts as a crack arresting agent, there is still a need for deeper knowledge of the actual cracking behaviour, especially regarding cracks with widths smaller than 0.3mm. LÄS MER

  4. 3. Plasminogen activator inhibitor type 2 : a unique serpin with two mobile loops

    Författare :Sergei Lobov; Umeå universitet; []
    Nyckelord :;

    Sammanfattning : The superfamily of serine protease inhibitors (serpins) is a large group of proteins with diverse functions but a common tertiary structure. Active serpins are highly metastable molecules. Metastability is the property underlying the success and ubiquitousness of serpins. LÄS MER

  5. 4. Plasminogen activator inhibitor type-1 : structure-function studies and its use as a reference for intramolecular distance measurements

    Författare :Peter Hägglöf; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biomedicine; PAI-1 serpin RCL complex formation DDEM Intramolecular distance; Biomedicin; Microbiology; Mikrobiologi; medicinsk biokemi; Medical Biochemistry;

    Sammanfattning : Inhibitors belonging to the serpin (serine protease inhibitor) family control proteases involved in various physiological processes. All serpins have a common tertiary structure based on the dominant b-sheet A, but they have different inhibitory specificity. LÄS MER

  7. 5. Transition metal-catalysed enol formation from allylic alcohols : Isomerisation, C−C and C−F bond formations

    Författare :Nanna Ahlsten; Hans Adolfsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi;

    Sammanfattning : This thesis describes the isomerisation of allylic alcohols into enols and enolates catalysed by transition metal complexes. The transformation has been used to prepare both unsubstituted and α-substituted carbonyl compounds. Significant attention has been given to the mechanistic aspects of the reactions. LÄS MER