Search for dissertations about: "o-ring"

Found 3 swedish dissertations containing the word o-ring.

  2. 1. Leakage mechanisms in static seals subjectecd to reciprocating vibration

    Author : Filip Rosengren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; O-ring; vibration; static seals; leakage; EHD; contact pressure; surface roughness; elastohydrodynamic; square-ring; compact seals;

    Abstract : .... READ MORE

  4. 2. Studies on maxillary overdentures : implant- and prosthesis survival, cost analysis and patient-reported outcomes

    Author : Peyman Ghiasi; Christel Larsson; Bruno Chrcanovic; Sofia Petrén; Victoria Franke Stenport; Malmö universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Prosthodontic; Dental Implants; Dental Prosthesis; Implant-Supported overdenture; cost analysis; Maxilla; Prosthesis Failure;

    Abstract : Edentulism is a debilitating condition which may negatively affect quality of life, particularly in relation to nutritional and social health, speech, and poor facial appearance. Prosthetic options available range from conventional complete dentures to implant-supported overdentures (ISODs) and implant-supported full arch fixed partial dentures (ISFAFDPs). READ MORE

  5. 3. Metallacyclic Phosphine Complexes and Intramolecular Csp3-H Bond Activation -Synthesis, Characterisation and Catalytic Application

    Author : Sven Sjövall; Kemiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; catalysis; Heck; diphosphite; diphosphine; phosphine; cyclometallation; C-C activation; C-O activation; C-H activation; palladium; rhodium; iridium; Inorganic chemistry; Oorganisk kemi;

    Abstract : The work presented in this thesis deals with metallacyclic late transition metal complexes, obtained by intramolecular Csp3-H activation, and the application of such compounds in catalysis. The new hemilabile P,O phosphines N-methyl-N-propionyl-2-(diphenylphosphino)benzylamine (DPPAM), o-(diphenylphosphino)benzoic acid ethyl ester (DPPES), o-(diphenylphosphino)benzoic acid methyl ether (DPPET) and ±-1-(2- diphenylphosphino)phenylethyl propionate (±-DPPMES) and the symmetrical diphosphorus donor ligands cis-1,3-bis[(diphenylphosphino)methyl]-cyclohexane (DPCY), cis-1,3-bis[(di-tertbutylphosphino)methyl]cyclohexane (DTBCY) and cis-1,3-bis[(di-isopropylphosphino)methyl]cyclohexane (DIPCY) have been synthesised, allowing the preparation of a range of new metallacyclic rhodium(III), iridium(III) and palladium(II) complexes. READ MORE