Search for dissertations about: "Björn Karlsson"

Showing result 1 - 5 of 39 swedish dissertations containing the words Björn Karlsson.

  1. 1. Energy and intensity modulated radiation therapy with electrons

    Author : Lennart Olofsson; Mikael Karlsson; Magnus Karlsson; Björn Zackrisson; Erik Traneus; Umeå universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiation sciences; Radiation therapy; Conformal therapy; IMRT; Electrons; Electron treatment head; Electron MLC; Bremsstrahlung reduction; Integral dose; Penumbra; Output factor; Strålningsvetenskap; Radiation biology; Strålningsbiologi; radiofysik; radiation physics;

    Abstract : In recent years intensity modulated radiation therapy with photons (xIMRT) has gained attention due to its ability to reduce the dose in the tissues close to the tumour volume. However, this technique also results in a large low dose volume. READ MORE

  2. 2. Optical properties of solids for solar energy conversion

    Author : Björn Karlsson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  3. 3. Catalytic Oxidation Methods. Use of inexpensive and environmentally friendly Oxidants in organic Synthesis

    Author : Erik Karlsson; Jan-Erling Bäckvall; Björn Åkermark; Stefan Oscarson; Kálmán Szabó; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi;

    Abstract : .... READ MORE

  4. 4. Chronic Pain and Exercise : Studies on pain intensity, biochemistry, adherence and attitudes

    Author : Linn Karlsson; Britt Larsson; Björn Gerdle; Gerhard Andersson; Esa-Pekka Takala; ernilla Åsenlöf; Linköpings universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICAL AND HEALTH SCIENCES; Adherence; biochemical substances; chronic pain; physical activity and exercise; treatment;

    Abstract : Chronic pain is common in western countries and entails considerable consequences for the afflicted individuals as well as for the society. Furthermore, chronic pain is complex including an advanced interplay between biological-, psychological- and social aspects. READ MORE

  5. 5. Catalysts for Oxygen Production and Utilization : Closing the Oxygen Cycle: From Biomimetic Oxidation to Artificial Photosynthesis

    Author : Erik Karlsson; Jan-Erling Bäckvall; Björn Åkermark; Jerker Mårtensson; Stockholms universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; oxygen; catalytic oxidation; biomimetic oxidation; artificial photosynthesis; water oxidation; DFT calculations; Organic chemistry; Organisk kemi; Organic Chemistry; organisk kemi;

    Abstract : This thesis describes the development and study of catalysts for redox reactions, which either utilize oxygen or hydrogen peroxide for the purpose of selectively oxidizing organic substrates, or produce oxygen as the necessary byproduct in the production of hydrogen by artificial photosynthesis.The first chapter gives a general introduction about the use of environmentally friendly oxidants in the field of organic synthesis, and about the field of artificial photosynthesis. READ MORE