Sökning: "leaflet"

Visar resultat 1 - 5 av 19 avhandlingar innehållade ordet leaflet.

  1. 1. Genetic variation and population differentiation in the forest herb Lathyrus vernus (Fabaceae)

    Författare :Katarina Schiemann; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .; taxonomy; morphology; phytogeography; inbreeding depression; Systematic botany; small population size; marginality; reproductive characters; leaflet shape; allozymes; Lathyrus vernus; genetic variation;

    Sammanfattning : In the present thesis, I investigated patterns of genetic variation in the forest herb Lathyrus vernus (Fabaceae), using plant material from different-sized populations representing three geographically separated regions: central Europe, southern and central Sweden. My studies included presumably neutral or weakly selected characters (allozymes and leaflet shape) as well as characters that should be under strong directional selection (e. LÄS MER

  3. 2. Interplay Between Phospholipids and Digalactosyldiacylglycerol in Phosphate Limited Oats

    Författare :Henrik Tjellström; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; acyl chain order; Avena sativa; DGDG; digalactosyldiacylglycerol; oat; liquid order; phosphate; phospholipase; plasma membrane; stress;

    Sammanfattning : Phosphate is an essential nutrient. In most soils it is limiting, which has resulted in that phosphate is supplied as fertilizer to increase crop yield. Through evolution, plants have adapted several mechanisms to increase phosphate uptake from the soil and to household with acquired phosphate. LÄS MER

  4. 3. Impact of Surgical Techniques Used for Mitral Valve Repair on Hemodynamic Performance

    Författare :Sigurdur Ragnarsson; Thoraxkirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mitral valve repair; artificial chordae; outcome; right ventricular function; infective endocarditis; mitral valve repair; artificial chordae; right ventricular function; outcome; infective endocarditis;

    Sammanfattning : AbstractBackground Mitral regurgitation (MR) has many etiologies; the most common is degenerative disease. If not corrected, severe MR may cause left and right ventricular heart failure. Mitral valve (MV) repair is the gold standard for treatment of MR. LÄS MER

  5. 4. Morphometric and molecular variation in the Nordic dogroses (Rosa Sect. Caninae, Rosaceae)

    Författare :Åsa Olsson; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systematisk botanik; chemotaxonomy. Physiology of nonvascular plants; Genetic diversity; Geographic differentiation; Systematic botany; RAPDs; taxonomy; morphology; phytogeography; kemotaxonomi. Växters fysiologi inte kärlväxter .; taxonomi; morfologi;

    Sammanfattning : In the present thesis, I investigate the hierarchical structure of morphometric and molecular diversity within and between the Nordic dogroses (Rosa Sect. Caninae, Rosaceae). I also investigate patterns of geographic differentiation and taxonomic relationships within the group. LÄS MER

  7. 5. Minimally invasive aortic valve replacement

    Författare :Magnus Dalén; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Minimally invasive aortic valve replacement (AVR) through a ministernotomy has been developed as an alternative approach to conventional full sternotomy AVR. During recent years, sutureless aortic bioprostheses were introduced with the aim to facilitate implantation, especially in minimally invasive procedures. LÄS MER