Sökning: "Marita Nilsson"

Hittade 3 avhandlingar innehållade orden Marita Nilsson.

  1. 1. Hydrogen Generation for Fuel Cells in Auxiliary Power Systems

    Författare :Marita Nilsson; Lars J. Pettersson; Gunther Kolb; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; autothermal reforming; auxiliary power unit; diesel; dimethyl ether; fuel cell; fuel-flexible reformer; hydrogen; PdZn alloy; reforming catalyst; reformer design; Rh; Chemical engineering; Kemiteknik;

    Sammanfattning : Heavy-duty trucks are in idle operation during long periods of time, providing the vehicles with electricity via the alternator at standstill. Idling trucks contribute to large amounts of emissions and high fuel consumption as a result of the low efficiency from fuel to electricity. LÄS MER

  3. 2. Hydrogen generation from dimethyl ether by autothermal reforming

    Författare :Marita Nilsson; Lars Pettersson; Ann Cornell; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; autothermal reforming; auxiliary power unit; dimethyl ether; fuel cell; hydrogen; palladium; reforming catalyst; temperature-programmed reduction; truck idling; X-ray diffraction; zinc; Chemical engineering; Kemiteknik;

    Sammanfattning : Heavy-duty trucks are in idle operation during long periods of time, providing the vehicles with electricity via the alternator at standstill. Idling trucks contribute to large amounts of emissions and high fuel consumption as a result of the low efficiency from fuel to electricity. LÄS MER

  4. 3. Immunological interactions between mother and child during pregnancy in relation to the development of allergic diseases in the offspring

    Författare :Martina Abelius; Maria Jenmalm; Lennart Nilsson; Marita Troye-Blomberg; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Background: Pregnancy and allergic disease have both been postulated as T-helper 2 (Th2) phenomena. Thus, the increased propensity of allergic mothers to mount Th2-responses might generate favourable effects on the maintenance of pregnancy, but might also be unfavorable, as fetal exposure to a strong Th2 environment could influence the immune development in the offspring to a Th2-like phenotype, favouring IgE production and possibly allergy development later in life. LÄS MER