Sökning: "Proportion"

Visar resultat 16 - 20 av 2193 avhandlingar innehållade ordet Proportion.

  1. 16. Synthesis of functional degradable polymers by radical ring-opening polymerization

    Författare :Jenny Undin; Ann-Christine Albertsson; Mats Johansson; Monica Ek; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; tissue engineering; ring-opening polymerization; 2; 2´-azoisobutyronitrile; cyclic ketene acetals; 2-methylene- 1; 3; 6-trioxocane; 2-methylene- 1; 3-dioxepane; vinyl acetate; coopolymerization;

    Sammanfattning : The increased demand for understanding cell-material interactions and subsequently create personalized implants for tissue engineering has resulted in an increased interest in developing new monomers with functional groups. The focus of the work presented in this thesis has been on the synthesis of functional monomers and the polymerization of these into functional amorphous aliphatic polyesters. LÄS MER

  3. 17. Surgeon-performed ultrasound and timing of surgery in acute cholecystitis

    Författare :Camilla Gustafsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Introduction: The use of bedside ultrasound has increased, as equipment has become accessible, user friendly, and ultrasound education is expanding in many specialties. The aim of this project was to validate surgeon-performed ultrasound and to optimise the surgical treatment for patients with acute cholecystitis, in particular in planning timing of surgery. LÄS MER

  4. 18. From youth to adult : studies on chronic airway obstruction with special reference to events in the neonatal period

    Författare :Petra Um-Bergström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Introduction: In western countries, 6-12% of all pregnancies end preterm, i.e. before 37 weeks of gestation. After the introduction of antenatal corticosteroids and improvements of neonatal intensive care, survival rates for children born preterm have increased worldwide. LÄS MER

  5. 19. Natural regeneration and management of birch

    Författare :Felicia Dahlgren Lidman; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : This thesis offers guidance for those who want to naturally establish, maintain and manage birch in monocultures and mixed stands. Silver and downy birch are the most common broadleaf tree species in northern Europe. In Sweden, the two species together make up approximately 12% of the standing forest volume. LÄS MER

  7. 20. Subarachnoid Hemorrhage in the Elderly

    Författare :Mats Ryttlefors; Per Enblad; Kristina Cesarini; David Mendelow; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; subarachnoid hemorrhage; intracranial aneurysm; elderly; outcome; endovascular coiling; neurosurgical clipping; secondary insult; cerebral vasospasm; Neurosurgery; Neurokirurgi;

    Sammanfattning : Subarachnoid hemorrhage (SAH) is a disease with high risk of mortality and morbidity. Elderly patients have an even higher risk of poor outcome. The incidence of SAH increases with age and the elderly constitute a substantial and increasing proportion of the population. Thus, the management of elderly SAH patients is an imminent clinical challenge. LÄS MER