Sökning: "population redistribution"

Visar resultat 21 - 25 av 31 avhandlingar innehållade orden population redistribution.

  1. 21. Spectroscopy of semiconductor quantum dots

    Författare :Mats Larsson; James L. Merz; Linköpings universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Quantum dots in the Si/Ge and InAs/GaAs materials systems are examined by means of photoluminescence. The spectroscopic study of Si/Ge quantum dots has demonstrated two different radiative recombination channels in the type II band alignment: The spatially direct transition inside the dot and the spatially indirect transition across the dot interface. LÄS MER

  3. 22. A tale of two blights

    Författare :Sophie Brouwer; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Potato is the third most important food crop for human consumption. However, the production is plagued by several pests and pathogens causing yield reducing diseases. Estimations indicate that 17% of the global potato yield is lost due to pests and pathogens. LÄS MER

  4. 23. Adipose tissue as an active organ : blood flow regulation and tissue-specific glucocorticoid metabolism

    Författare :Jonas Andersson; Tommy Olsson; Stefan Söderberg; Sverker Jern; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; 11β-hydroxysteroid dehydrogenase type 1; adipose tissue; autonomic nervous system; blood flow; cortisol; nitric oxide; weight loss.; medicin; Medicine;

    Sammanfattning : Background: Despite advances in the treatment of atherosclerosis, cardiovascular disease is the leading cause of death worldwide. With the population getting older and more obese, the burden of cardiovascular disease may further increase. LÄS MER

  5. 24. Leukocyte receptor alternations during systemic inflammatory responses

    Författare :Olof Ljunghusen; Per Venge; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : The leukocyte adhesion molecule CD llb is very important when granulocytes and monocytes leave the blood stream. This adhesion molecule is stored preformed intracellularly, and can upon stimulation of the cells by, for example, complement split products, be mobilized to the cell surface. LÄS MER

  7. 25. Preventing pressure ulcers by assessment of the microcirculation in tissue exposed to pressure

    Författare :Sara Bergstrand; Margareta Lindgren; Anna-Christina Ek; Maria Engström; Lars-Göran Lindberg; Fredrik Huss; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pressure ulcer; photoplethysmography; laser Doppler flowmetry; non-invasive; tissue blood flow; reactive hyperemia; pressure-induced vasodilation; interface pressure; risk assessment;

    Sammanfattning : The overall aim of this thesis was to combine optical methods into a system with the ability to simultaneously measure blood flow changes at different tissue depths. The goal of such a system was to reveal vascular mechanisms relevant to pressure ulcer etiology under clinically relevant conditions and in relation to the evaluation of pressure-redistribution support surfaces. LÄS MER