Sökning: "Michael Johansson"

Visar resultat 21 - 25 av 29 avhandlingar innehållade orden Michael Johansson.

  1. 21. Coarctation of the aorta : register and imaging studies

    Författare :Daniel Rinnström; Bengt Johansson; Michael Henein; Martin Ugander; Gerhard-Paul Diller; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; coarctation of the aorta; adult congenital heart disease; hypertension; left ventricular hypertrophy; body mass index; height; weight; register; CMR;

    Sammanfattning : Background Coarctation of the aorta (CoA) constitutes 5-8 % of all congenital heart disease (CHD) and is associated with long-term complications such as hypertension (HTN) and left ventricular hypertrophy (LVH). Factors associated with HTN, LVH, and diffuse myocardial fibrosis, are not yet fully explored in this population. LÄS MER

  3. 22. Cognitive training in young and old adults : Transfer, long-term effects, and predictors of gain

    Författare :Petra Sandberg; Anna Stigsdotter Neeyl; Michael Rönnlund; Boo Johansson; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Cognitive training; aging; old adults; executive function; life-span; individual differences; episodic memory; inhibition; shifting; updating; cognitive control; strategy training; mnemonics; predictors; Psychology; psykologi;

    Sammanfattning : Aging, also in the absence of pathological conditions, is associated with cognitivedecline, especially in so called fluid abilities, such as episodic memory andexecutive functions. Due to an ongoing demographic shift, a larger part of thepopulation will reach higher ages, and more people will be affected by age-relatedcognitive decline. LÄS MER

  4. 23. Long-term outcome and exercise capacity in adults with congenital heart disease with focus on tetralogy of Fallot

    Författare :Anette Sandström; Bengt Johansson; Camilla Sandberg; Daniel Rinnström; Michael Y. Henein; Erik Thunström; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Adults congenital heart disease; tetralogy of Fallot; exercise test; exercise capacity; mortality; register; physical activity; pacemaker; implantable cardioverter defibrillator; quality of life; Medfödda hjärtfel; Fallots tetrad; arbetsprov; fysisk prestationsförmåga; mortalitet; register; fysisk aktivitet; pacemaker; implanterbar defibrillator; livskvalitet; kardiologi; Cardiology; epidemiologi; Epidemiology;

    Sammanfattning : Background: Congenital heart disease (CHD) includes a wide range of malformations, from simple lesions, e.g. ventricular septal defect, that resolve spontaneously, to severe lesions, e.g. LÄS MER

  5. 24. Understanding the Influence of Wood Extractives on Off-Gassing during Storage of Wood Pellets

    Författare :Workson Siwale; Jonas Berghel; Gunnar Henriksson; Michael Finell; Stefan Frodeson; Gunnar Johansson; Karlstads universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Off-gassing; Carbon Monoxide; Carbon Dioxide; Methane; Self-heating; Additive Oils; Fatty and Resin Acids; Solid Biofuels; Miljö- och energisystem; Environmental and Energy Systems;

    Sammanfattning : Wood pellets have become a solid biomass fuel of choice because they are a standardized product with known quality properties. However, the self-heating and off-gassing tendencies during storage of wood pellets threatens the consistency of the pellets’ quality properties. LÄS MER

  7. 25. Chloride Homeostasis in Central Neurons

    Författare :Tushar Yelhekar; Staffan Johansson; Michael Druzin; Merab Kokaia; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chloride concentration; current-voltage relation; interpolation; voltage ramp; reversal potential; [Cl–]i recovery; KCC2; extracellular matrix; GABAA receptor; chloride leak conductance; neurosteroid; fysiologi; Physiology;

    Sammanfattning : The overall aim of the present thesis is to clarify the control of intracellular chloride homeostasis in central neurons, because of the critical role of chloride ions (Cl–) for neuronal function. Normal function of the central nervous system (CNS) depends on a delicate balance between neuronal excitation and inhibition. LÄS MER