Sökning: "voids."

Visar resultat 11 - 15 av 126 avhandlingar innehållade ordet voids..

  1. 11. Arc Evaporated Titanium Carbonitride Coatings

    Författare :Lennart Karlsson; Wolf-Dieter Münz; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : TiCxN1-x thin films is an important group of coatings for enhancing wear-resistance of, e.g., tools for metal cutting. The influence of microstructure, composition, and residual stress state, on the mechanical properties of such films, have been investigated. LÄS MER

  3. 12. Fibre flocculation during twin-wire roll forming

    Författare :Roger Bergström; KTH; []
    Nyckelord :;

    Sammanfattning : At the division of Paper Technology a forming unitconsisting of headbox, forming roll unit and reservoir systemfor suspension recirculation has been constructed, with themain purpose to experimentally study the paper forming event byvisually following the fibre flow phenomena in the formingzone.The effect of various running parameters upon the pressuredistribution, which is in correlation to the flow phenomenaoccuring during forming, has been studied with a flush mountedpressure sensor. LÄS MER

  4. 13. Polyethylene/metal oxide nanocomposites for electrical insulation in future HVDC-cables : probing properties from nano to macro

    Författare :Love Pallon; Ulf Gedde; Mikael Hedenqvist; Richard Olsson; Alun Vaughan; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocomposites; polyethylene; particle dispersion; high voltage direct current cables; HVDC; HVDC insulation; MgO; intermodulation electrostatic force microscopy; ptychography; electrical tree; Nanokompositer; polyeten; HVDC; HVDC-kabel; HVDC-isolering; MgO; elektrisk isolation; partikeldispergering; elektriska träd; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Nanocomposites of polyethylene and metal oxide nanoparticles have shown to be a feasible approachto the next generation of insulation in high voltage direct current cables. In order to reach an operationvoltage of 1 MV new insulation materials with reduced conductivity and increased breakdown strengthas compared to modern low-density polyethylene (LDPE) is needed. LÄS MER

  5. 14. Physical and morphological aspects of linseed oil impregnated pine (Pinus Sylvestris)

    Författare :Tomas Olsson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood Physics; Träfysik;

    Sammanfattning : This work has investigated the possibilities of increasing wood durability using environmentally friendly chemicals. The chemical used in this study was linseed oil. The study also investigated flow paths during impregnation in pine and spruce. LÄS MER

  7. 15. Nocturia in the elderly. Aspects on epidemiology, pathogenesis, and antidiuretic treatment

    Författare :Åsa Rembratt; Avdelningen för klinisk kemi och farmakologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; epidemiology; Public health; hyponatremia.; desmopressin; frequency-volume chart; voiding patterns; Nocturia; nocturnal polyuria; Folkhälsa; epidemiologi;

    Sammanfattning : Analysis of nocturia questionnaires mailed to all persons aged 65 years or more in Tierp, a Swedish rural community, showed that the number of nocturnal voids was highly correlated with urge and incontinence. No correlation between nocturia and a known and treated hypertension, angina, congestive heart failure or diabetes mellitus was detected. LÄS MER