Search for dissertations about: "Current crowding"

Showing result 1 - 5 of 16 swedish dissertations containing the words Current crowding.

  2. 1. Modelling of Terahertz Planar Schottky Diodes

    Author : Aik-Yean Tang; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; S-parameter extraction; Electro-thermal; Schottky diodes; Skin effect; Electromagnetic; Frequency multipliers; High-power frequency multiplier; Current crowding; Proximity effect; Submillimetre wave generation and detection; Geometric modelling; Gallium Arsenide;

    Abstract : This thesis deals with the modelling of THz planar Schottky diodes, focusing on analyses of the geometry- dependent parasitics and the diode chip thermal management. Moving towards higher operating frequencies, the electromagnetic couplings pose significant limitations on the diode performance. READ MORE

  4. 2. Effect of Macromolecular Crowding on Diffusive Processes

    Author : Zahedeh Bashardanesh; David van der Spoel; Per Lötstedt; Lars Schäfer; Uppsala universitet; []
    Keywords : ;

    Abstract : Macromolecular crowding are innate to cellular environment. Understanding their effect on cellular components and processes is essential. This is often neglected in dilute experimental setup both in vitro and in silico. READ MORE

  5. 3. Approaching the depairing critical current in superconducting YBa2Cu3O7−x nanowires

    Author : Shahid Nawaz; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; YBCO; Superconductivity; HTS; Nanowires; NanoSQUIDs;

    Abstract : The microscopic origin of High critical Temperature Superconductivity isstill an open issue in condensed matter physics. In these complex oxideselectrons self-organize in ways qualitatively different from those of conventionalmetals and insulators. READ MORE

  6. 4. Risk factors for measles mortality : studies from Kenya and 19th century Stockholm

    Author : Bo Burström; Karolinska Institutet; Karolinska Institutet; []
    Keywords : measles mortality; immunization; crowding; clustering; social factors; child;

    Abstract : Measles kills about 1 million children per year in low-income developing countries. In many industrialized countries, the transmission of measles and its lethal effects have become controlled through immunization and social developments in general. READ MORE

  7. 5. Respiratory symptoms and atopic sensitization among school children in different settings around the Baltic Sea

    Author : Lennart Bråbäck; Gören Pershagen; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : The aim of this thesis was to assess the prevalence of respiratory symptoms and atopic sensitization and related risk faCtors amo:Og school children in urban and rural areas of Sundsvall in Northern Sweden and urban areas of Konin in Poland and Tallinn and Tartu in Estonia. Ambient levels of N02 were similar in urban Sundsvall and Konin whereas levels of S02 and smoke were about 5 times higher in Konin than in Sundsvall. READ MORE