Sökning: "Karlsson 2005"

Visar resultat 1 - 5 av 68 avhandlingar innehållade orden Karlsson 2005.

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

    Författare :Lennart Olofsson; Mikael Karlsson; Magnus Karlsson; Björn Zackrisson; Erik Traneus; Umeå universitet; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 2. Managing complex environmental risks for sustainable development : policies for hazardous chemicals and genetically modified organisms

    Författare :Mikael Karlsson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hållbar utveckling; Biology; Biologi;

    Sammanfattning : .... LÄS MER

  4. 3. Nödvändighetens väg : Världsbildande gränsarbete i skildringar av informationssamhället

    Författare :Stefan Karlsson; Gerd Lindgren; Göran Sundqvist; Karlstads universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ideology; Boundary Work; World View; Information Society; Technocracy; Sociology; Sociologi; Sociologi; Sociology;

    Sammanfattning : This dissertation aims at describing the worldview and the ontological boundary work that descriptions of ”the information society” presuppose as well as understanding how these relate to technocratic descriptions of the world. The theoretical point of origin of this work is that worldviews are communicated, and that when this transpires, three worlds are related to (the objective, the social, and the subjective) which contain ideological components that make them plausible. LÄS MER

  5. 4. Strategies for improving mechanical properties of polypropylene/cellulose composites

    Författare :Ana Espert; Sigbritt Karlsson; Carlos Gonzalez Sanchez; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; polymer technology; chemical engineering; materials science; polymer; Kemi; Chemistry; Kemi;

    Sammanfattning : The interest for polypropylene/cellulose composites has experienced a great increase in different applications such as car interiors and construction materials. Cellulose fibres are inexpensive, renewable, biodegradable, they present lower density and their mechanical properties can be compared to those of inorganic fillers. LÄS MER

  7. 5. Model for End of Life Treatment of Polymer Composite Materials

    Författare :Anna Hedlund-Åström; Jan-Gunnar Persson; Conrad Luttropp; Sigbritt Karlsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polymer composites; material recycling; energy recovery; environmental effects; recommendations; waste treatment model; Environmental engineering; Miljöteknik;

    Sammanfattning : Because of increasing environmental demands, especially on dealing with products end of life phase, product manufacturers and designers must consider the future disposal of their products. For conventional materials like steel and aluminium well-functioning recycling methods exists. LÄS MER