Sökning: "compositional structure"

Visar resultat 1 - 5 av 84 avhandlingar innehållade orden compositional structure.

  1. 1. Structure, Morphology, and Catalytic Properties of CuOx/CeO2 Model Catalysts

    Författare :Björn Skårman; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Synchrotron radiation; High-energy Diffraction; X-ray Absorption Fine Structure Spectroscopy.; Chemical technology and engineering; Kemiteknik och kemisk teknologi; Chemistry; Kemi; Material technology; Materiallära; materialteknik; X-ray photoelectron spectroscopy; Atomic force microscopy; Gatan Image Filter GIF ; Energy-filtered TEM; High-resolution electron microscopy; Inert gas condensation IGC ; rf Magnetron sputtering; Thermal activation; Batch reactor; Carbon monoxide oxidation; Surface sensitivity; Catalytic anisotropy; Growth; Nucleation; Topography; Roughness; Core-shell structures; Morphology; Nanostructured; Nanocomposite; Nanoparticles; Surface structure; Polycrystalline surfaces; Thin films; Copper oxide; Cerium dioxide CeO2 ; Ceria;

    Sammanfattning : Cerium dioxide, or ceria, is a chemically stable oxygen ion conducting material with a capacity to store and release oxygen, and is therefore extensively used in combustion catalysts. The Cu-Ce-O system has been identified as one of the most active catalysts for the combustion of carbon monoxide. LÄS MER

  3. 2. Synthesis, Properties and Bonding in Hume-Rothery Transition-metal Gallides and Indides

    Författare :Per Viklund; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Material technology; Kemi; Chemistry; Bonding; Structural stability; Electronic-structure; Neutron diffraction; X-ray diffraction; Atomic Structure; Intermetallics; Hume--Rothery; Materiallära; materialteknik; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Sammanfattning : In this work the intermetallic systems formed by transition-metals from group 5 to 9 with Ga, In and Zn have been experimentally and theoretically studied in detail. Syntheses, compositional analyses, X-ray and neutron diffraction (single crystal as well as powder) and measurements of physical properties, e.g. LÄS MER

  4. 3. The Rhythm of Thinking: Immanence and Ethics in Theater Performance

    Författare :Johan Petri; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; artistic research; co-composition; collective processes; compositional structure; dramaturgy; ethics; hierarchy in collective creation; immanent collective creation; instant collective composition; multiplicity; music theater; performance philosophy; performative critique; process ontology; process philosophy; relation of non-relation; theater; theater directing; theatrical composition; Rosi Braidotti; John Cage; Gilles Deleuze; Brian Massumi; Mathias Spahlinger;

    Sammanfattning : The dissertation The Rhythm of Thinking: Immanence and Ethics in Theater Performance is an artistic research project in the field of theater, with directing and theatrical composition and dramaturgy as its main points of focus. The critical exploration is based on the experience of conceptualizing and directing three different theater performances. LÄS MER

  5. 4. Magnetic Heterostructures : The Effect of Compositional Modulation on Magnetic Properties

    Författare :Inna Soroka; Roger Wäppling; Björgvin Hjörvarsson; Rudolf Schäfer; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Magnetism; Sputter deposition; Superlattice; Multilayers; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The effect of compositional modulation on structural and magnetic properties of magnetic heterostructures was explored. The systems under focus were ferromagnetic superlattices Fe81Ni19/Co, metal-insulator multilayers Al2O3/Ni81Fe19, nanoparticles and artificial multilayered pillars. LÄS MER

  7. 5. Komposition. Trädgården – som förgrenar sig

    Författare :Anders Hultqvist; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Music composition; spectral; fractal; epistemology; cognition; 1 f-structures; entropy; formal time; musical dimensions; poetic structure; cognitive poetics;

    Sammanfattning : With the compositional practise as the point of departure the text discusses different topics around musical composition and its artistic, philosophical and scientific context. Some initial explorations were carried out through the use of spectral- and fractal based techniques and experiments. LÄS MER