Search for dissertations about: "Ann Mattsson"

Showing result 1 - 5 of 6 swedish dissertations containing the words Ann Mattsson.

  2. 1. Antiferromagnets and Luttinger Liquids: Two Strongly Correlated Systems

    Author : Ann Mattsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Strongly correlated systems show a variety of intriguing properties and have been extensively studied over the years. In this thesis two strongly correlated systems are discussed: the two-dimensional antiferromagnet and the Luttinger liquid. The Luttinger liquid has attracted much interest as a paradigm of non-Fermi liquid behavior. READ MORE

  4. 2. Denitrification in a Non-nitrifying Activated Sludge System Employing Recirculation from a Tertiary Nitrification Unit

    Author : Ann Mattsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nitrogen removal; denitrification; activated sludge; post nitrification; pilot plant;

    Abstract : A non-nitrifying, denitrifying activated sludge system has been demonstrated to give high denitrification rates and to be a useful component in a municipal wastewater treatment plant where partial nitrogen removal is required. One useful configuration is where clarified effluent from a non-nitrifying activated sludge system is nitrified in a tertiary nitrification unit and recirculated to the activated sludge system for denitrification. READ MORE

  5. 3. Two-dimensional antiferromagnetism : from Schwinger bosons to spin waves

    Author : Ann Mattsson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; honeycomb lattice; antiferromagnet; Heisenberg model;

    Abstract : .... READ MORE

  6. 4. Health-related Internet use and screening for emotional distress in people with cancer

    Author : Susanne Mattsson; Johansson Birgitta; Maria Carlsson; Erik Olsson; Ann Langius-Eklöf; Uppsala universitet; []
    Keywords : Social support; Internet; Cancer; eHealth; Questionnaire; Oncology; Support; Patient preference; Screening; Depression; Anxiety;

    Abstract : The overall aim of this thesis was to investigate the preferences and incentives for using Internet-delivered support among people with cancer and to develop and test a generic questionnaire measuring health-related Internet use, the Health Online Support Questionnaire (HOSQ). Another aim was to examine the psychometric properties of the online-administered Hospital Anxiety and Depression Scale (HADS) and Visual Analogue Scale (VAS) regarding anxiety and depression in psychosocial screening among people with cancer, in comparisons with the longer instruments Montgomery Åsberg Depression Rating Scale – Self-report (MADRS-S) and the State Trait Anxiety Inventory – State (STAI-S). READ MORE

  7. 5. Ab-initio description of mono-vacancies in metals and alloys

    Author : Lorand Delczeg; Levente Vitos; Ann E. Mattsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Trough the following pages a comprehensive study of open structures will be shown, including mono-vacancy calculations and open surfaces. These are electronic structure calculations using density functional theory within the exact muffin tin method. READ MORE