Sökning: "David Sjöström"

Hittade 4 avhandlingar innehållade orden David Sjöström.

  1. 1. Effects of surgically induced weight loss on cardiovascular risk factors. Results from the intervention study Swedish Obese Subjects

    Författare :David Sjöström; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Obesity; Controlled clinical trial; Intervention study; Weight loss; Blood pressure; Hypertension; NIDDM; Lipids; Gastroplasty; Gastric bypass;

    Sammanfattning : Aims: To investigate the effects of large maintained weight losses on body composition, adipose tissue distribution and cardiovascular risk factors, i.e. systolic blood pressure, diastolic blood pressure, glucose, insulin, triglycerides, cholesterol, HDL-cholesterol and uric acid. LÄS MER

  3. 2. Constitutive and fatigue crack propagation behaviour of Inconel 718

    Författare :David Gustafsson; Kjell Simonsson; Johan Moverare; Sjöström Sören; Sten Johansson; Christer Persson; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nickel-base superalloys constitutive modelling mean stress relaxation fatigue crack propagation hold times grain boundary embrittlement;

    Sammanfattning : In this licentiate thesis the work done in the TURBO POWER project Influence of high temperature hold times on the fatigue life of nickel-based superalloys will be presented. The overall objective of this project is to develop and evaluate tools for designing against fatigue in gas turbine applications, with special focus on the nickel-based superalloy Inconel 718. LÄS MER

  4. 3. High temperature fatigue crack propagation behaviour of Inconel 718

    Författare :David Gustafsson; Kjell Simonsson; Johan Moverare; Sören Sjöström; Ulrich Krupp; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The overall objective of this work has been to develop and evaluate tools for designing against fatigue in gas turbine applications, with special focus on the nickel-based superalloy Inconel 718. The fatigue crack propagation behaviour under high temperature hold times has been studied. LÄS MER

  5. 4. Prediction of wood species and pulp brightness from roundwood measurements

    Författare :David Nilsson; Ulf Edlund; Michael Sjöström; Olav Kvalheim; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Design of Experiments; ISO brightness; Multivariate Image Analysis; Multivariate Modelling; NIR spectroscopy; Norway spruce; PCA; PLS; Roundwood; Scots pine; Organic chemistry; Organisk kemi;

    Sammanfattning : This thesis presents a number of studies, where a multivariate approach was taken to construct models that predict wood species and thermo mechanical pulp brightness from roundwood of Norway spruce and Scots pine. The first and second studies produced multivariate prediction models for wood species from the bark of spruce and pine. LÄS MER