Sökning: "matte"

Visar resultat 1 - 5 av 13 avhandlingar innehållade ordet matte.

  1. 1. Slag Cleaning of a Reduced Iron Silicate Slag by Settling : Influence of Process Parameters and Slag Modification on Copper Content

    Författare :Jenny Isaksson; Caisa Samuelsson; Andreas Lennartsson; Anton Andersson; Pekka Taskinen; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Copper losses; matte; speiss; fayalite slag; temperature; settling time; solid phases; industrial trial; CaO modification; Process Metallurgy; Processmetallurgi;

    Sammanfattning : During the pyrometallurgical extraction of copper, a significant part of the copper is lost with discard slag, which decreases profits, overall copper recovery, and efficiency of raw material usage. Smelting furnace slag usually has a copper content that is close to or higher than that of copper ores. LÄS MER

  3. 2. "Jag kan göra matte å minus å plus" : Förskolebarns och pedagogers deltagande i matematiska aktiviteter

    Författare :Gabriella Gejard; Caroline Liberg; Helen Melander; Polly Björk-Willén; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; mathematical activities; epistemic stance; geometry; number sense; preschool children; participation; interaction; gesture; ethnomethodology; conversation analysis; Curriculum Studies; Didaktik;

    Sammanfattning : This licentiate thesis examines mathematical activities in a preschool. More precisely, the aim is to create knowledge of how mathematical activities emerge and are constructed in children's interactions with each other and with their teachers. LÄS MER

  4. 3. Leaching of water-granulated iron silicate slags and their compounds : A study of synthetic and industrial slag systems

    Författare :Jakob Kero Andertun; Fredrik Engström; Caisa Samuelsson; Pasi Peltola; Bart Blanpain; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Sammanfattning : Copper smelter slag is a residue product of the pyrometallurgical extraction of copper. Due to its physical properties, the iron silicate type of copper smelter slag has many possible application areas, e.g., different aggregates and abrasives. LÄS MER

  5. 4. Revision Hip Arthroplasty : Impaction Bone Grafting and Low-Dose CT-Based Measurements of Bone Density and Migration

    Författare :Hampus Stigbrand; Gösta Ullmark; Nils Hailer; Per Wretenberg; Uppsala universitet; []
    Nyckelord :Revision Hip Arthroplasty; Bone Grafting; Computed Tomography; Bone Mineral Density; CTMA; Orthopaedics; Ortopedi;

    Sammanfattning : Aseptic loosening of total hip replacements is always associated with bone defects, either due to removal of the existing implant or osteolysis. Bone defects can be handled during revision surgery with impaction bone grafting (IBG). LÄS MER

  7. 5. Influence of postoperative treatment, surface treatment and stem design on the outcome of primary total hip arthroplasty

    Författare :Truike Thien; Göteborgs universitet; []
    Nyckelord :Primary total hip arthroplasty; anteverted stem; stem design; cemented and cementless fixation; radiostereometry; bone mineral density; clinical outcome;

    Sammanfattning : Aims: The aim of this study was to investigate the influence of postoperative treatment, surface treatment and stem design on the outcome of primary Total Hip Arthroplasty. The main intention was to study anteverted femoral stems. LÄS MER