Search for dissertations about: "Phosphate"

Showing result 11 - 15 of 631 swedish dissertations containing the word Phosphate.

  2. 11. Injectable calcium sulphate and calcium phosphate bone substitutes

    Author : Malin K Nilsson; Lund Ortopedi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; traumatologi; ortopedi; Kirurgi; Surgery; orthopaedics; traumatology; resorbable; hydroxyapatite; bone substitute; calcium phosphate; injectable; calcium sulphate;

    Abstract : Two formulations of biphasic injectable bone substitutes have been developed for the treatment of bone defects and stabilisation of fragility fractures. The first formulation consists of a calcium sulphate matrix with embedded hydroxyapatite (HA) particles to provide osteoconductivity. READ MORE

  4. 12. Structural and Functional Studies of Ribose-5-phosphate isomerase B

    Author : Annette K. Roos; Sherry L. Mowbray; Torsten Unge; Constance Jeffery; Uppsala universitet; []
    Keywords : Molecular biology; Mycobacterium tuberculosis; reaction mechanism; cis-enediolate high energy intermediate; allose-6-phosphate isomerase; rare sugar; pentose phosphate pathway; Rv2465c; X-ray crystallography; Molekylärbiologi;

    Abstract : Ribose 5-phosphate isomerase (Rpi) is one of the major enzymes of the pentose phosphate pathway, where it catalyses the inter-conversion of ribose 5-phosphate (R5P) and ribulose 5-phosphate. Two forms of this isomerase with no significant amino acid sequence similarity exist, RpiA and RpiB. READ MORE

  5. 13. Functional aspects of inorganic phosphate transport

    Author : Michael R. Andersson; Bengt Persson; Jan Willem de Gier; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; phosphate membrane transport mutagenesis saccharomyces cerevisae; Biokemi; Biochemistry;

    Abstract : Inorganic phosphate is an essential nutrient for all organisms. It is required for many cellular components as nucleic acids and phospholipids, and as energy-carrying compounds such as ATP. Thus, a regulated uptake of this pivotal nutrient is of outermost importance. READ MORE

  6. 14. Calcium Phosphate Based Biomaterials for Bone Augmentation

    Author : Jun Luo; Cecilia Persson; Håkan Engqvist; Marc Bohner; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; bone substitute materials; calcium phosphate cements; apatite; brushite; monetite; setting mechanism; premixed; fibre reinforcement; composite; silk fibroin; mechanical properties; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Abstract : Basic (apatite-based) calcium phosphate cements (CPCs), and acidic (brushite and monetite-based) CPCs are used as bone replacement materials because of their bioactivity, mouldability and ability to harden in place. However, their application is limited by their inherent brittleness and difficulties related to their handling. READ MORE

  7. 15. Can Bone Void Fillers Carry Load? : Behaviour of Calcium Phosphate Cements Under Different Loading Scenarios

    Author : Ingrid Ajaxon; Cecilia Persson; Caroline Öhman-Mägi; Uwe Gbureck; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Calcium phosphate; bone cement; brushite; apatite; monetite; porosity; solvent exchange; degradation; compressive strength; diametral tensile strength; flexural strength; elastic modulus; Poisson’s ratio; fatigue; Teknisk fysik med inriktning mot materialvetenskap; Engineering Science with specialization in Materials Science;

    Abstract : Calcium phosphate cements (CPCs) are used as bone void fillers and as complements to hardware in fracture fixation. The aim of this thesis was to investigate the possibilities and limitations of the CPCs’ mechanical properties, and find out if these ceramic bone cements can carry application-specific loads, alone or as part of a construct. READ MORE