Search for dissertations about: "PETTERSSON KLAS"

Found 3 swedish dissertations containing the words PETTERSSON KLAS.

  1. 1. Homogenization of some elliptic equations with connections to elasticity

    Author : Klas Pettersson; Luleå tekniska universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik; Matematik; Mathematics;

    Abstract : In this PhD thesis we prove some properties of elliptic equations in connection with periodic homogenization. We mainly study the stationary linearized elasticity system. This thesis consists of five papers complemented with a short introduction.The first paper concerns some elliptic equations on a domain with oscillating boundary. READ MORE

  2. 2. RhPt and Ni based catalysts for fuel reforming in energy conversion

    Author : Angélica Viviana González Arcos; Lars J. Pettersson; Klas Engvall; Anker Jensen; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; RhPt bimetallic catalysts; Ni catalysts; ceria-zirconia; potassium tungsten bronze; zirconium dioxide; autothermal reforming; biodiesel; diesel; sulfur; deactivation; tar reforming; steam reforming; biomass gasification; auxiliary power units; naphthalene; Chemical Engineering; Kemiteknik;

    Abstract : Although current trends in global warming are of great concern, energy demand is still increasing, resulting in increasing pollutant emissions. To address this issue, we need reliable renewable energy sources, lowered pollutant emissions, and efficient and profitable processes for energy conversion. READ MORE

  3. 3. On Environmental Grounds : Outdoor Recreation, Place Relations and Environmental Sustainability

    Author : Daniel Wolf-Watz; Klas Sandell; Peter Fredman; Robert Pettersson; Ebba Lisberg Jensen; Karlstads universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Environmental Concern; Place; Nature; Practice; Tourism; Kulturgeografi; Human Geography;

    Abstract : This thesis examines the relationship between outdoor recreation and environmental concern as part of the wider issue of environmental sustainability in late-modern societies. It includes studies of environmentalists’ (that is environmentally committed individuals’) preferences and motivations with regard to outdoor recreation, and covers the inquiries of whether and how outdoor recreation can influence levels of environmental concern. READ MORE