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Visar resultat 1 - 5 av 31 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Wideband Active and Passive Antenna Solutions for Handheld Terminals

    Författare :Peter Lindberg; Anders Rydberg; Anders Pers; Nicholas Buris; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; active antennas; impedance matching; dipole antennas; baluns; slot antennas; microstrip antennas; mobile antennas; multifrequency antennas; antenna proximity factors; receiving antennas; ferrite devices; Teknisk fysik;

    Sammanfattning : This thesis presents solutions and studies related to the design of wideband antennas for wireless handheld terminal applications. A method of electrically shortening the terminal chassis length to obtain resonance at high frequencies has been proposed and evaluated, thereby increasing the antennas impedance bandwidth. LÄS MER

  3. 2. Resin composites : Sandwich restorations and curing techniques

    Författare :Anders Lindberg; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; Adaption; Clinical; Degree of conversion; Depth of cure; Flowable; Resin composite; Restorations; SEM; Medicin;

    Sammanfattning : Since the mid-1990s resin composite has been used for Class II restorations in stress-bearing areas as an alternative to amalgam. Reasons for this were the patients’ fear of mercury in dental amalgam and a growing demand for aesthetic restorations. LÄS MER

  4. 3. Electron-Impact Liquid-Jet Water-Window X-ray Sources

    Författare :Peter Anders Skoglund Lindberg; Hans M. Hertz; Oscar Tjernberg; KTH; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : This Thesis describes the development and characterization of a soft x-ray liquidjet-anode electron-impact source. With a water-jet target the primary emission is the O Kα line at 525 eV. This is close to the lower edge of the water-window, a spectral region lacking simple laboratory sources. LÄS MER

  5. 4. Undervisning på engelska i den svenska gymnasieskolan - ett experiment med potential? : En studie av tre elevgruppers engelska texter i två register

    Författare :Anders Edlund; Inger Lindberg; Liss Kerstin Sylvén; Maria Lim Falk; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Den avtalsgrundade lojalitetsplikten : en allmän rättsprincip

    Författare :Anders Holm; Bo H Lindberg; Juha Karhu; Linköpings universitet; []
    Nyckelord :law of contract; principle on loyalty; Sweden; avtalsrätt; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

    Sammanfattning : There are a number of legal principles regulating contract law, of which good faith (bona fides) is one. In the Nordic countries the equivalence is the principle ofloyalty. The acceptance of this principle within Swedish contract law has increased during the last two decades, but the principle has not yet been subject to codification. LÄS MER