Sökning: "Thomas Pettersson"
Visar resultat 21 - 25 av 32 avhandlingar innehållade orden Thomas Pettersson.
21. Bilism för regional utjämning? : Studier av privatbilismens geografiska och socioekonomiska spridningsmönster 1950-2000
Sammanfattning : This licentiate thesis, with the English title Automobility towards Regional Equality? Studies of the geographical and socioeconomic diffusion of the private automobility in Sweden 1950-2000, has the overall aim to investigate the interaction between the private automobility and the Swedish socio-economical development in general. Firstly, the diffusion of private car ownership in Sweden is mapped both geographically and economically at the national level covering all citizens above the age of 18. LÄS MER
22. Targeting Early Stages of Alzheimer’s Disease in a Transgenic Model
Sammanfattning : The Arctic mutation causes early-onset Alzheimer’s disease (AD), and makes amyloid-β (Aβ) peptides more prone to form Aβ protofibrils. The aims of this thesis were to investigate the mechanisms of the Arctic mutation in vivo, and to use transgenic models to determine the role of early intermediates of Aβ aggregation, like protofibrils, in the pathogenesis. LÄS MER
23. Subsurface fluxes of mass and energy at the accumulation zone of Lomonosovfonna ice cap, Svalbard
Sammanfattning : Glaciers cover ca 10% of the Earth's land and are found in the high altitudes and latitudes. They are important components of environmental systems due to the multiple feedbacks linking them with the atmosphere, hydrosphere and periglacial landscapes. LÄS MER
24. Development of analytical methods for the determination of the small molecule component of complex biological systems
Sammanfattning : The research field of untargeted metabolomics aims to determine the relative abundance of all small metabolites in a biological system in order to find biomarkers or make biological inference with regards to the internal or external stimuli. This is no trivial aim, as the small metabolites are both vast in numbers and extremely diverse in their chemical properties. LÄS MER
25. Mutual neutralisation reactions in atmospheric and industrial plasmas
Sammanfattning : This thesis deals with experimental studies of electron transfer reactions between oppositely charged ions (mutual neutralisation). These were performed at the unique double electrostatic ion storage ring DESIREE at Stockholm University, which was put into full operation in 2017. LÄS MER