Sökning: "surface reactions"

Visar resultat 1 - 5 av 657 avhandlingar innehållade orden surface reactions.

  1. 1. ROLE OF SURFACE OXIDES IN SINTERING OF CHROMIUM-ALLOYED STEEL POWDER

    Författare :Henrik Karlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; water atomisation; surface analysis; sintering; chromium-alloyed steel.; Powder metallurgy; surface reactions; surface; surface oxide; SEM; XRD; AES; XPS;

    Sammanfattning : During water-atomisation and handling of steel powder the surface inevitably oxidises. The surface bound oxide is an important factor in the processing of powder metallurgical (PM) steels, especially in case the powder contains elements forming stable oxides, such as Cr, Mn, and Si. LÄS MER

  3. 2. Reactions of aqueous radiolysis products with oxide surfaces : An experimental and DFT study

    Författare :Cláudio Miguel Lousada Patrício; Mats Jonsson; Jean-Philippe Renault; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hydrogen peroxide; hydrogen production; metal; oxides; lanthanide; catalysis; density functional theory; surface; reactions; chemistry; SRA - Energy; SRA - Energi; SRA - Production; SRA - Produktion;

    Sammanfattning : The reactions between aqueous radiolysis products and oxide surfaces are important in nuclear technology in many ways. In solid-liquid systems, they affect (and at the same time are dependent on) both the solution chemistry and the stability of materials under the influence of ionizing radiation. LÄS MER

  4. 3. Modelling Chemical Reactions : Theoretical Investigations of Organic Rearrangement Reactions

    Författare :Per-Erik Larsson; Sten Lunell; Nessima Salhi-Benachenhou; Olle Matsson; Osvaldo Goscinski; Ian H. Williams; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum chemistry; Kvantkemi; Quantum chemistry; Kvantkemi; Quantum Chemistry; Kvantkemi;

    Sammanfattning : Chemical reactions are ubiquitous and very important for life and many other processes taking place on earth. In both theoretical and experimental studies of reactivity a transition state is often used to rationalise the outcome of such studies. LÄS MER

  5. 4. Electronic structure of semiconductor surfaces : reconstructions and surface reactions

    Författare :Magnus Björkqvist; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Photochemical Surface Functionalization : Synthesis, Nanochemistry and Glycobiological Studies

    Författare :Lingquan Deng; Olof Ramström; Javier Rojo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbohydrates; Glycobiology; Carbohydrate-protein interactions; Perfluorophenylazide PFPA ; Photochemistry; Carbohydrate surface immobilization; Carbohydrate microarrays; Surface plasmon resonance SPR ; Quartz crystal microbalance QCM ; Atomic force microscopy AFM ; Glyconanomaterials; Concanavalin A Con A ; Cyanovirin-N CV-N ; 1-Glycosyl thiols; Mutarotation; 1-S-glycosylation; Stereocontrol;

    Sammanfattning : This thesis mainly deals with the development of photochemical approaches to immobilize carbohydrates on surfaces for glycobiological studies. These approaches have been incorporated into a number of state-of-the-art nanobio-platforms, including carbohydrate microarrays, surface plasmon resonance (SPR), quartz crystal microbalance (QCM), atomic force microscopy (AFM), and glyconanomaterials. LÄS MER