Sökning: "delta resonance"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden delta resonance.

  1. 1. Magnetizing Currents in Power Transformers : Measurements, Simulations, and Diagnostic Methods

    Författare :Claes Carrander; Hans Edin; Göran Engdahl; Rajeev Thottappillil; Amr Adly; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transformer core; diagnostics; three-phase; no-load; hysteresis; modeling; resonance; remanence; delta; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : This thesis demonstrates a method for transformer core diagnostics. The method uses the no-load current of the transformer as an indicator, and gives different characteristic signatures for different types of faults or defects. Using the no-load current for the diagnostic gives high sensitivity. LÄS MER

  3. 2. Aspects of Hadron Production in High-Energy Heavy-Ion Physics

    Författare :David Silvermyr; Partikel- och kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; RHIC; pad readout; electronic; chip-on-board; tracking; heavy-ion collisions; freeze-out temperature; delta resonance; SPS; WA98; PHENIX; Fysik; coherent peripheral; multiplicity; Physics; Fysicumarkivet A:2001:Silvermyr;

    Sammanfattning : High-energy heavy-ion collisions provide a unique tool for the study of nuclear matter as a function of temperature and density. WA98 at the CERN SPS recorded data with a 158 A GeV Pb beam on a Pb target in 1996. To cope with the high charged-particle density, a tracking system based on high granularity multi-step avalanche detectors was developed. LÄS MER

  4. 3. Electron-Phonon Interactions in Transition Metal Oxides Studied by Resonance Raman Scattering

    Författare :Jakob Andreasson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Franck-Condon; Fr ohlich interaction; higher order scattering; perovskite; transition metal oxide; two-phonon; oxygen breathing mode; Raman spectroscopy;

    Sammanfattning : In this thesis, studies of strong electron-phonon interactions in a number of transition metal oxides are presented. Two different electron-phonon interaction mechanisms are identified; Franck-Condon scattering and infrared active longitudinal optical (IR LO) two-phonon activation. LÄS MER

  5. 4. Imaging in Idiopathic Normal Pressure Hydrocephalus : The value of structured radiological evaluation

    Författare :Karin Kockum; Katarina Laurell; Elna-Marie Larsson; Katrine Riklund; Johan Wasselius; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; normal pressure hydrocephalus; gait disorder; computed tomography; magnetic resonance imaging; diagnostisk radiologi; Diagnostic Radiology;

    Sammanfattning : Background: Idiopathic normal pressure hydrocephalus (iNPH) is a neurological condition where the symptoms include disturbed gait, balance, cognition and continence. The diagnostic guidelines are based on typical symptoms combined with imaging showing enlarged ventricles. LÄS MER

  7. 5. Angiopoietin-like protein 4 : an unfolding chaperone regulating lipoprotein lipase activity

    Författare :Valentina Sukonina; Gunilla Olivecrona; Lena Kjellen; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Lipoprotein lipase; angiopoietin-like protein 4; protein folding; human adipose tissue; macrophages; peroxisome proliferator-activated receptor delta PPARδ ; Medical microbiology; Medicinsk mikrobiologi;

    Sammanfattning : Lipoprotein lipase (LPL) is the main enzyme hydrolyzing triglyceride-rich lipoproteins in plasma. Proteoglycan-bound LPL on the vascular endothelium represent the functional pool of active enzyme. LPL is regulated in a tissue specific manner according to metabolic demands. LÄS MER