Search for dissertations about: "replacements"

Showing result 21 - 25 of 99 swedish dissertations containing the word replacements.

  2. 21. Investigation of Carbon Reinforced UHMWPE Nanocomposites for use in Orthopaedics

    Author : Silvia Suñer Moreno; Robert S Dwyer-Joyce; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Over the lifetime of a person, the function of the natural hip joint can be altered due to trauma or disease and an artificial hip replacement may eventually be required. Ultra high molecular weight polyethylene (UHMWPE) is considered the gold standard material for the acetabular cup in hip arthroplasties. READ MORE

  4. 22. Metabolic engineering strategies to increase n-butanol production from cyanobacteria

    Author : Josefine Anfelt; Elton P. Hudson; Mathias Uhlén; Patrik R. Jones; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cyanobacteria; metabolic engineering; biofuels; butanol; synthetic scaffold; CRISPRi; solvent tolerance; Bioteknologi; Biotechnology;

    Abstract : The development of sustainable replacements for fossil fuels has been spurred by concerns over global warming effects. Biofuels are typically produced through fermentation of edible crops, or forest or agricultural residues requiring cost-intensive pretreatment. READ MORE

  5. 23. Mimicking the Binary World: Photochromic Compounds in Molecular Logic

    Author : Martin Hammarson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; DNA; dithienylethene; molecular logic; spiropyran; photochromism; porphyrin;

    Abstract : The language of the binary world is used in, e.g., electronic circuits of a computer where a signal either can be on, known as 1 or off, known as 0. In the effort to make things smaller, molecules that mimic this binary world have been suggested as potential replacements for electronic circuits. READ MORE

  6. 24. Radiographic assessment of cup migration and wear after hip replacement

    Author : Thomas Ilchmann; Lund Ortopedi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Surgery; measurement; assessment; loosening; migration; wear; cup; Hip; arthroplasty; orthopaedics; traumatology; Kirurgi; ortopedi; traumatologi;

    Abstract : Methods are needed for accurate measurement of acetabular cup migration and wear after hip replacement. The EBRA (Ein Bild Röntgen Analyse) method was recently introduced as a computerized method for radiographic assessment of acetabular cup migration. READ MORE

  7. 25. Deformation behaviour and chemical signatures of anorthosites: : Examples from southern West Greenland and south-central Sweden

    Author : Henrik Svahnberg; Sandra Piazolo; Anders Scherstén; Holger Stünitz; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; anorthosite; plagioclase; deformation; strain localisation; fluid-rock interaction; electron backscatter diffraction EBSD ; Solid earth geology and petrology; Berggrundsgeologi och petrologi; Mineralogy; Petrology and Geochemistry; mineralogi; petrologi och geokemi;

    Abstract : Plagioclase is the most abundant mineral in the lower crust and it is thus important to constrain the behaviour of plagioclase during deformation. Anorthosites, which are plagioclase-rich rocks, are common in Archaean cratons but their origin and rheological importance is still debated. READ MORE