Sökning: "sapphire"

Visar resultat 6 - 10 av 65 avhandlingar innehållade ordet sapphire.

  1. 6. Oxide ceramic matrix composites for gas turbine applications

    Författare :Magnus Holmquist; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; zirconia; alumina; hot pressing; single crystal oxide fibre; tape casting; oxide fibre; sapphire; interphase; ceramic matrix composite; mechanical properties; hot isostatic pressing;

    Sammanfattning : .... LÄS MER

  3. 7. 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. 8. Preparation and properties of sapphire/alumina long fibre composites

    Författare :Marta-Lena Antti; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Engineering Materials;

    Sammanfattning : The research described in the thesis concerns the preparation and properties of oxide/oxide composites and in particular composites consisting of an oxide matrix reinforced with continuous oxide fibres and intended for use as structural materials at very high temperatures. For this application particular attention must be paid to the behaviour of the fibre/matrix interface and to the properties of the fibre. LÄS MER

  5. 9. Processing and Characterization of AlGaN/GaN HEMTs on Sapphire

    Författare :Vincent Desmaris; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  7. 10. Interstitial Laser Thermotherapy of Liver Tumours. Methodology and Application

    Författare :Páll Helgi Möller; Lund Kirurgi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Resection; Liver; Neoplasm; Blood flow; Monitoring; Feedback control; Light penetration; Bare fibre; Sapphire probe; Nd:YAG laser; Interstitial thermotherapy; Hyperthermia; Surgery; orthopaedics; traumatology; Kirurgi; ortopedi; traumatologi;

    Sammanfattning : Interstitial laser thermotherapy (ILT) is a method well suited for selective local destruction of malignant tumours. In the present work, a laser thermotherapy system based on feedback temperature control of energy delivery (through computerised feedback system) was developed. LÄS MER