Sökning: "Peter Lundberg"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden Peter Lundberg.

  1. 1. On methods for estimating oceanic flow

    Författare :Jenny A. U. Nilsson; Peter Lundberg; Peter Sigray; Bert Rudels; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Ocean monitoring techniques; Barotropic flow; Baroclinic flow; Hydraulic theory; Baltic Sea; Bahía de Concepción; Oceanography; Oceanografi; Oceanography; oceanografi;

    Sammanfattning : The aim of this thesis was to estimate and possibly quantify ocean flow by utilizing conventional and novel observational methods as well as model results. Motionally induced voltages, from a cable-based observational system in the Baltic Sea, were analysed to determine their utility for ocean monitoring. LÄS MER

  2. 2. Non-Invasive Assessment of Liver Fibrosis with 31P-Magnetic Resonance Spectroscopy and Dynamic Contrast Enhanced Magnetic Resonance Imaging

    Författare :Bengt Norén; Staffan Wirell; Peter Lundberg; Peter Leander; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The present study aims at demonstrating phosphorus metabolite concentration changes and alterations in uptake/excretion of a hepatocyte specific contrast agent in patients with diffuse - or suspected diffuse - liver disease by applying two non-invasive quantitative MR techniques and to compare the results with histo-pathological findings, with focus on liver fibrosis.In the first study phosphorus-31 MR spectroscopy using slice selection (DRESS) was implemented. LÄS MER

  3. 3. Functional Magnetic Resonance Imaging for Clinical Diagnosis : Exploring and Improving the Examination Chain

    Författare :Mattias Ragnehed; Peter Lundberg; Maria Engström; Örjan Smedby; Peter Fransson; Linköpings universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Radiologi;

    Sammanfattning : Functional Magnetic Resonance Imaging (fMRI) is a relatively new imaging technique, first reported in 1992, which enables mapping of brain functions with high spatial resolution. Functionally active areas are distinguished by a small signal increase mediated by changes in local blood oxygenation in response to neural activity. LÄS MER

  4. 4. Neurotransmitter Imaging of the Human Brain : Detecting γ-Aminobutyric Acid (GABA) Using Magnetic Resonance Spectroscopy

    Författare :Sofie Tapper; Peter Lundberg; Anders Tisell; Peter Zsigmond; Richard Edden; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Introduction: In this thesis, MEGA-edited Magnetic Resonance Spectroscopy (MRS) has been used for the purpose of non-invasive detection of !- aminobutyric acid (GABA) within the brain. GABA is the main inhibitory neurotransmitter in the human central nervous system, and glutamate is the corresponding main excitatory neurotransmitter. LÄS MER

  5. 5. Grid-connected NPC converter in load balancing applications

    Författare :Peter Lundberg; Chalmers University of Technology; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER