Sökning: "CRYSTAL DATA"

Visar resultat 21 - 25 av 292 avhandlingar innehållade orden CRYSTAL DATA.

  1. 21. Crystal structure studies of a new series of molybdovanadate polyanions and some related vanadates

    Författare :Arne Björnberg; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; isopolyvanadates; molybdovanadate polyanions; single-crystal X-ray investigations; ESR spectroscopy; heteropoly blues;

    Sammanfattning : The determination of complexes formed in weakly acidic aqueous solutions containing pentavalent vanadium as well as hexavalent molybdenum has proved diffi cui t due to slow equilibria and 1 imi ted sol ubi 1 i ty of especially the vanadium species. The formation of several different polynuclear complexes with a very varied molybdenum/vanadium ratio also complicates the interpretation of Potentiometrie data. LÄS MER

  3. 22. Single crystal sapphire dental implants : experimental and clinical studies

    Författare :Bahman Fartash; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :edentulous mandible; implantology; sapphire dental implants; overdenture; long-term follow-up; radiography; osseointegration; peri-implant mucosa; corrosion; cell culture; animal experiments; light microscopy; scanning electron microscopy; histometri;

    Sammanfattning : The aim of this project was to evaluate single synthetic sapphire crystals as dental implants, with special reference to correlation of clinical and in vitro/in vivo methods of research. The laboratory studies confirmed chemical stability. LÄS MER

  4. 23. Vein controlled crystal size distributions of Barrovian index minerals

    Författare :Alexander Lewerentz; Alasdair Skelton; Uwe Ring; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The concept of index mineral based metamorphic zones was first introduced by George Barrow in 1912, and Barrovian metamorphism is still applied by metamorphic petrologists. Today the importance of metamorphic fluids for driving metamorphic reactions is widely recognised. LÄS MER

  5. 24. Crystal structures and phase equilibria in the Mn-Ga system

    Författare :Magnus Boström; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The Mn-Ga equilibrium phase diagram was reinvestigated. The phase analyses were performed both by powder and single crystal X-ray diffraction methods. LÄS MER

  7. 25. 3D Electron Microscopy Methods and Applications : Structures from Atomic Scale to Mesoscale

    Författare :Taimin Yang; Xiaodong Zou; Grüne Tim; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 3D Electron microscopy; continuous rotation electron diffraction; structure determination; data quality; electron tomography; mesoporous materials; zeolites; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : The crystal structure determines the physical properties of a material. The structure can be analysed at different levels, from atomic level, mesoscale level, all the way up to the macroscale level. LÄS MER