Sökning: "Ray Larsson"

Visar resultat 6 - 10 av 22 uppsatser innehållade orden Ray Larsson.

  1. 6. Influence of nitrocarburization on the thermomechanical fatigue properties of ductile iron for exhaust components : Analysis and comparisons of TMF-properties

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Karl Larsson; [2019]
    Nyckelord :Thermo-mechanical fatigue; low cycle fatigue; thermal strain; ductile cast iron; nitrocarburizing;

    Sammanfattning : New stricter environmental legislation requires lower emissions and fuel consumption of automotive engines. Therefore the fuel efficiency must be increased but this leads to higher loads in the engine. As for the exhaust system it is affected by higher thermomechanical loads. LÄS MER

  3. 7. Fabrication and Characterization of Nano-Confined Pd Catalysts for CO Oxidation

    Master-uppsats, Lunds universitet/Fasta tillståndets fysik; Lunds universitet/Fysiska institutionen

    Författare :Alfred Larsson; [2019]
    Nyckelord :Catalysis Palladium Nano Nanopore CO oxidation; Physics and Astronomy;

    Sammanfattning : During this thesis nanoporous alumina has been used as a template for the synthesis of nano-confined palladium structures. The nanoporous templates have been synthesized by anodization of aluminum and characterized using atomic force microscopy (AFM), scanning electron microscopy (SEM) and small angle X-ray scattering (SAXS), resulting in good statistics of the pore diameter and interpore distance of these nanoporous structures. LÄS MER

  4. 8. InP/Si Template for Photonic Application

    Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Niklas Larsson; [2015]
    Nyckelord :CELOG; CMP; Chemlox; Citric Acid; Sodium Hypochlorite; InP; CELOG; CMP; Chemlox; Citronsyra; Natrium Hypoklorit; InP;

    Sammanfattning : In this work an epitaxial layer of Indium Phosphide (InP) has been grown on top of a silicon substrate using the Corrugated Epitaxial Lateral Overgrowth (CELOG) technique. The grown InP CELOG top layer typically has a poor surface roughness and planarity. Before this surface can be used for any processing it has to be smooth and planarized. LÄS MER

  5. 9. Study of CVD deposited i-ZnO layers in CIGS thin film solar cells

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fasta tillståndets elektronik

    Författare :Fredrik Larsson; [2015]
    Nyckelord :CVD; CIGS; intrinsic; ZnO; thin film; solar cell;

    Sammanfattning : CIGS thin film solar cells usually include a thin layer of intrinsic zinc oxide (i-ZnO) deposited on a CdS buffer layer by sputtering. However an interest has grown in using chemical vapor deposition (CVD) instead. LÄS MER

  7. 10. Identifying the Cretaceous–Paleogene boundary in North Dakota, USA, using portable XRF

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Emilie Larsson; [2013]
    Nyckelord :geokemi; K–Pg gränsen; portabel XRF; North Dakota; K–Pg boundary; portable XRF; terrestrial deposits; geochemistry; terrestra avlagringar; Earth and Environmental Sciences;

    Sammanfattning : En portabel röntgenfluorescens (XRF) spektrometer användes i denna studie för att identifiera kemiska markörer relaterade till Krita–Paleogen (K–Pg) gränsen i North Dakota, USA. Vid K–Pg-gränsen träffades jorden av en asteroid vilket resulterade i ett av de fem stora massutdöendena. LÄS MER