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Showing result 1 - 5 of 16 swedish dissertations matching the above criteria.

  2. 1. Characterisation of airborne particles from rail traffic

    Author : Saeed Abbasi; Ulf Sellgren; Ulf Olofsson; Mats Gustafsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; airborne; railway; brake; block; Other engineering mechanics; Övrig teknisk mekanik; SRA - Transport; SRA - Transport; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för persontrafik; Järnvägsgruppen - Effektiva tågsystem för persontrafik; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology;

    Abstract : Since the investigation of wear particles in rail transport started in late-1910s, the high mass concentration of these particles has raised worries among researchers concerned with air quality. However, effective action has yet to be taken because of lack of relevant knowledge. READ MORE

  4. 2. Diode laser spectroscopy in extended wavelength ranges

    Author : Ulf Gustafsson; Atomfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; diode-laser spectroscopy; frequency-modulation spectroscopy; frequency conversion; fluorescence spectroscopy; scattering; diffraction; Fysicumarkivet A:2000:Gustafsson; Atomic and molecular physics; Atom- och molekylärfysik; absorption spectroscopy;

    Abstract : Diode laser spectroscopy performed in the ultraviolet, visible and infrared spectral regions is presented. The accessible wavelength range for visible and near-infrared diode lasers is extended by the use of sum- and difference-frequency generation. READ MORE

  5. 3. Aspects of ERAS-care pathways within colo-rectal surgery

    Author : Ulf Gustafsson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Almost half of all in-patients in Sweden are treated with surgery. Fast postoperative recovery is important not only for each patient undergoing surgery but also from a health economical perspective. Within traditional care, the rate of postoperative recovery after major abdominal surgery has been slow with high morbidity and long hospital stays. READ MORE

  6. 4. Cholesterol gallstone disease in the gallbladder : mechanisms of gallstone formation and cancer development

    Author : Ulf Gustafsson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Ingen sammanfattning tillgänglig. / No abstract available... READ MORE

  7. 5. Ventricular rotation and the rotation axis : a new concept in cardiac function

    Author : Ulf Gustafsson; Anders Waldenström; Per Lindqvist; Alan Fraser; Umeå universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Left ventricular function; right ventricular function; rotation; twist; rotation axis; transition plane; ischemia; speckle tracking echocardiography; Cardiology; Kardiologi; Cardiology; kardiologi;

    Abstract : Background: The twisting motion of the left ventricle (LV), with clockwise rotation at the base and counter clockwise rotation at the apex during systole, is a vital part of LV function. Even though LV rotation has been studied for decades, the rotation pattern has not been described in detail. READ MORE