Sökning: "loss of w"

Visar resultat 1 - 5 av 96 avhandlingar innehållade orden loss of w.

  1. 1. Long-term performance of poly(vinyl chloride) cables : mechanical and electrical performances and the effect of plasticizer migration

    Författare :Maria Ekelund; Ulf W. Gedde; Minna Hakkarainen; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Poly vinyl chloride cables; ageing; mechanical properties; plasticizer migration; Polymer chemistry; Polymerkemi;

    Sammanfattning : Cables insulated with plasticized poly(vinyl chloride) were aged at temperatures between 80 and 180 °C in air and their conditions were assessed by indenter modulus measurements, tensile testing, infrared (IR) spectroscopy, differential scanning calorimetry (DSC) and liquid chromatography (HPLC). Electrical testing of oven-aged cable samples was performed in order to relate the electrical functionality during a high-energy line break accident to the mechanical properties and to establish a lifetime criterion. LÄS MER

  2. 2. Calcareous Algae of a Tropical Lagoon : Primary Productivity, Calcification and Carbonate Production

    Författare :Juma W. Kangwe; Mats Björk; Lena Kautsky; Ian Bryceson; Stockholms universitet; []

    Sammanfattning : The green algae of the genus Halimeda Lamouroux (Chlorophyta, Bryopsidales) and the encrusting loose-lying red coralline algae (Rhodophyta, Corallinales) known as rhodoliths are abundant and widespread in all oceans. They significantly contribute to primary productivity while alive and production of CaCO3 rich sediment materials on death and decay. LÄS MER

  3. 3. Fractionated irradiation of salivary glands : loss and protection of function

    Författare :Ulrika Funegård; Thorild Ericson; Umeå universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Irradiation; salivary glands; saliva composition; antioxidants; radioprotection;

    Sammanfattning : Radiotherapy of malignancies in the head and neck often involves the major and minor salivary glands in the radiation field. Adverse effects, such as dry mouth symptoms, are common after such therapy. LÄS MER

  4. 4. International Outcomes of Total Hip Arthroplasty: Influence of Patient, Implant, and Surgical factors on Total Hip Arthroplasty Survivorship in Sweden, the US, and Australia

    Författare :Elizabeth W. Paxton; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Total Hip Arthroplasty; International outcomes; Variation in clinical practices; Risk of hip arthroplasty revision; meta-analysis;

    Sammanfattning : Abstract Background Hip osteoarthritis (OA) is debilitating disease resulting in pain, stiffness, and reduced physical function. Although total hip arthroplasty (THA) is a successful treatment for OA, some THAs require revision surgery due to infection, dislocation, aseptic loosening, fracture and other reasons. LÄS MER

  5. 5. Evolution and host-specific adaptations of Legionella pneumophila

    Författare :Anaísa B. Moreno; Lionel Guy; Dan I. Andersson; Fredrik Söderbom; Alexander W. Ensminger; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Evolution; Legionella pneumophila; host-adaptation; experimental evolution; Acanthamoeba castellanii; transfection; Mikrobiologi; Microbiology;

    Sammanfattning : How bacteria evolve pathogenic traits is shaped by their communities and environments. Legionella pneumophila is ubiquitous in aquatic habitats, where it persists by replicating within a broad range of protozoan hosts. Using the same mechanisms, L. LÄS MER