Sökning: "johan dahlqvist"

Hittade 3 avhandlingar innehållade orden johan dahlqvist.

  1. 1. Cavity Purge Flows in High Pressure Turbines

    Författare :Johan Dahlqvist; Björn Laumert; Jens Fridh; Paul Beard; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbomachinery; axial turbine; cavity purge; purge flow; wheelspace; rim seal; spanwise transport; radial transport; effectiveness; cooling; efficiency; strömningsmaskiner; axialturbin; kavitetsrensningsflöde; kavitetsflöde; tätkant; spännviddsvis transport; radiell transport; effektivitet; kylning; verkningsgrad; Energy Technology; Energiteknik;

    Sammanfattning : Turbomachinery forms the principal prime mover in the energy and aviation industries. Due to its size, improvements to this fleet of machines have the potential of significant impact on global emissions. LÄS MER

  3. 2. Speciation and fractionation of Ca and the REE in fresh and marine waters

    Författare :Ralf Dahlqvist; Johan Ingri; Jérôme Viers; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Geokemi; Earth sciences; Geovetenskap;

    Sammanfattning : This study is concerned with speciation and fractionation of the rare earth elements (REE) and calcium (Ca) in aqueous solutions. The aim is to investigate the chemical states and physical sizes in which these elements can be present. The REE (including neodymium) and Ca have contrasting geochemical behavior in aqueous solutions. LÄS MER

  4. 3. Aspects on inflammation and cardiovascular comorbidity in rheumatoid arthritis

    Författare :Lotta Ljung; Solbritt Rantapää-Dahlqvist; Johan Askling; Piet van Riel; Umeå universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; rheumatoid arthritis; co-morbidity; cardiovascular disease; atherosclerosis; acute coronary syndromes; adipokines; adipose tissue; tumor necrosis factor inhibition;

    Sammanfattning : There is an increased risk for cardiovascular (CV) comorbidity among patients with rheumatoid arthritis (RA), with premature atherosclerosis, and a higher incidence of CV events, compared with the general population. Disease related factors add to the CV risk, and interact with the traditional CV risk factors. LÄS MER