Sökning: "lanthanum"

Visar resultat 21 - 25 av 37 avhandlingar innehållade ordet lanthanum.

  1. 21. Nanotemplated High-Temperature Materials for Catalytic Combustion

    Författare :Erik Elm Svensson; Sven Järås; Magali Boutonnet; James J. Spivey; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon templating; Catalytic combustion; Ceria; Gas turbine; Hexaaluminate; Magnesia; Methane; Microemulsion; Perovskite; Chemical engineering; Kemiteknik;

    Sammanfattning : Catalytic combustion is a promising technology for heat and power applications, especially gas turbines. By using catalytic combustion ultra low emissions of nitrogen oxides (NOX), carbon monoxide (CO) and unburned hydrocarbons (UHC) can be reached simultaneously, which is very difficult with conventional combustion technologies. LÄS MER

  3. 22. Nanomaterials for membranes and catalysts

    Författare :Stylianos Nassos; Sven Järås; Carina Lagergren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nanotechnology; microemulsion; nanoparticles; hydrogen production; CO2 capture; selective catalytic oxidation of ammonia; activity; gasified biomass; Chemical engineering; Kemiteknik;

    Sammanfattning : Nanotechnology is a relatively new research topic that attracts increasing interest from scientists and engineers all over the world, due to its novel applications. The use of nanomaterials has extended to a broad range of applications, for example chemical synthesis, microporous media synthesis and catalytic combustion, contributing to achievement of improved or promising results. LÄS MER

  4. 23. The Milky Way as seen through Neutron-Capture Elements

    Författare :Rebecca Forsberg; Astrofysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical abundances; Galactic archaeology; chemically peculiar star; heavy elements; Galactic disk; Galactic bulge; Galactic chemical evolution;

    Sammanfattning : Through stars, the formation and evolution of the Galaxy goes hand-in-hand with the cosmic origin of the elements. As stars form, they carry chemical fingerprints of their birthclouds, providing us with chemical timestamps of the Galaxy.The detailed history of the Galactic disk and bulge is still to be untagled. LÄS MER

  5. 24. Structural Investigations of Complex Glasses by Solid-state NMR

    Författare :Ekaterina Leonova; Mattias Edén; Robin Harris; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; glass; glass structure and properties; NMR; magic angle spinning; chemical shift; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : This PhD thesis presents structural investigations of amorphous inorganic materials: oxide and oxynitride glasses and mesoporous bioactive glasses (MBGs), by solid-state Nuclear Magnetic Resonance (NMR). Lanthanum oxide and oxynitride [La-Si-(Al)-O-(N)] glasses have a large number of potential applications due to their physical properties. LÄS MER

  7. 25. Pulmonary Injury Following Intestinal Ischemia and Reperfusion in Rats

    Författare :Anna Börjesson; Lund Kirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; reperfusion injury; intestinal ischemia; pulmonary injury; endothelium; cytokines; alveolar fluid clearance; leukocytes; orthopaedics; Surgery; traumatology; ortopedi; Kirurgi; traumatologi;

    Sammanfattning : Intestinal ischemia and reperfusion (I/R) is a potentially life-threatening condition, sometimes leading to a systemic inflammatory response and the potential development of the multiple organ dysfunction syndrome. The overall aim of the thesis was to study the effects of intestinal I/R on pulmonary function with special emphasis on removal of excess alveolar fluid, pulmonary endothelial barrier permeability, leukocyte accumulation and function, and possible therapeutic strategies to prevent the development of pulmonary injury following intestinal I/R. LÄS MER