Sökning: "C Lindgren"

Visar resultat 16 - 20 av 25 avhandlingar innehållade orden C Lindgren.

  1. 16. Recurrent events and secondary prevention after acute cerebrovascular disease

    Författare :Anna-Lotta Irewall; Thomas Mooe; Katarina Laurell; Lindgren Arne; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; stroke; transient ischemic attack; secondary prevention; socioeconomic position; prognosis; randomized controlled trial;

    Sammanfattning : Background Patients who experience a stroke or transient ischemic attack (TIA) are at high risk of recurrent stroke, but little is known about temporal trends in unselected populations. Reports of low adherence to recommended treatments indicate a need for enhanced secondary preventive follow-up to achieve the full potential of evidence-based treatments. LÄS MER

  3. 17. Material characterization of AA7075-T651 deformed at different temperatures and strain rates

    Författare :Biswajit Dalai; Lars-Erik Lindgren; Paul Åkerström; Marta-Lena Antti; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : In this licentiate thesis, the mechanical response and the microstructure evolution in aluminum alloy (AA) 7075 in its T651 heat treated state have been studied through mechanical tests at varied conditions of strain rate and temperature.First, compression tests were performed on AA7075-T651 samples at room temperature (RT), 100, 200, 300, 400 and 500 °C (melting temperature of AA7075 is ~635 °C) with two comparatively low strain rates of 0. LÄS MER

  4. 18. Perinuclear Antineutrophil Cytoplasmic Antibodies in Inflammatory Bowel Disease

    Författare :Ping Yang; Stefan Lindgren; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Antineutrophil cytoplasmic antibodies (ANCAs) are a group of autoantibodies which are specific for granulocyte antigens. By indirect immunofluorescence (llF) on ethanol-fixed neutrophils, ANCAs can be divided into two types: a cytoplasmic staining pattern (C-ANCA) or a perinuclear staining pattern (P-ANCA). LÄS MER

  5. 19. Microstructure Modelling of Additive Manufacturing of Alloy 718

    Författare :Chamara Kumara; Per Nylén; Johan Moverare; Lars-Erik Lindgren; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase-Field Modelling; Additive Manufacturing; Phase Transformation; Solidification; Heat Treatment; Superalloy; Production Technology; Produktionsteknik;

    Sammanfattning : In recent years, additive manufacturing (AM) of Alloy 718 has received increasing interest in the field of manufacturing engineering because of its attractive features compared with those of conventional manufacturing methods. Nevertheless, owing to the inherent nature of the process, the build material is exposed to complex thermal conditions that affect the microstructure. LÄS MER

  7. 20. Microstructure and property models of alloy 718 applicable for simulation of manufacturing processes

    Författare :Marie Anna Moretti; Lars-Erik Lindgren; Paul Åkerström; Jörgen Kajberg; Bijish Babu; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material characterisation; Material modelling; Alloy 718; Plasticity; Recrystallization; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : This thesis focuses on experimental characterization, understanding and modelling of nickel-based alloy 718, for a large range of loading conditions. Alloy 718 is the most widely used nickel-based superalloy, due to its high strength, high corrosion resistance and excellent mechanical properties at high temperatures. LÄS MER