Sökning: "Co-Cr"

Visar resultat 11 - 15 av 18 uppsatser innehållade ordet Co-Cr.

  1. 11. Speciation of metals in contaminated sediments in the Kalmar County, Sweden : an initial approach toward sediment mining

    Master-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Homayoun Fathollahzadeh; [2013]
    Nyckelord :Sediment mining; harbor; semi-enclosed bay; speciation; metals; sequential extraction procedure; recovery; sustainable; environmental footprint; environmental assessment;

    Sammanfattning : In response to the growing numbers of contaminated sites, concerns about proper management with reduced environmental footprints have been raised. In the present study, mining of highly contaminated sediments to recover valuable elements such as metals and nutrients is proposed as sustainable approach, both through enhancing resilience of ecosystems and remediation, beside probable turnovers. LÄS MER

  3. 12. A two-year retrospective evaluation of titanium and cobalt-chromium metal-ceramic fixed dental prostheses

    Master-uppsats, Malmö högskola/Odontologiska fakulteten (OD)

    Författare :Jovan Dražić; Miloš Dražić; [2013]
    Nyckelord :chromium; clinical trial; cobalt; fixed dental prostheses; survival; titanium;

    Sammanfattning : Mål: Målet med den retrospektiva studien var att bedöma den kliniska kvaliteten av metallkeramiska broar i titan-porslin (Ti) och kobolt-krom-porslin (Co-Cr) med en minsta uppföljningstid på två år.Material och metod: 49 patienter behandlades med metallkeramiska broar i Ti och Co-Cr på avdelningen för Oral Protetik på Odontologiska fakulteten i Malmö under perioden 2007-2010. LÄS MER

  4. 13. Theoretical and Experimental Study of the Co-Cr-Mo System

    Master-uppsats, KTH/Materialvetenskap

    Författare :YiYao Lu; [2011]
    Nyckelord :Co-Cr-Mo system; Calphad method; Thermodynamic description;

    Sammanfattning : The thermodynamic properties of the Co-Cr-Mo ternary system have been described. Available experimental data on the system have been assessed and applied to optimize the parameters used in the thermodynamic models within the Calphad method. LÄS MER

  5. 14. Spårämnen i alunskiffer, rödfyrshögar och björkträd vid Andrarums alunbruk, Skåne

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Anna Pettersson; [2011]
    Nyckelord :Earth and Environmental Sciences;

    Sammanfattning : Handheld XRF-technique has been used to measure the occurrence of potentially toxic trace elements in outcrops of alum shale, heaps of burnt alum shale, and birch trees at Andrarum, southeastern Scania, Sweden. Results showed that both types of shale contain substantial amounts of problematic trace elements, such as As, Ba, Co, Cr, Cu, Mo, Ni and V. LÄS MER

  7. 15. Equilibrium studies in the Co-Cr-C system : Solubility of Cobalt in M23C6 and M3C2

    Kandidat-uppsats, KTH/Materialvetenskap

    Författare :Karin Ekström; Shanar Kordbache; [2011]
    Nyckelord :;

    Sammanfattning : This project concerns cemented carbides and the carbides that are formed when adding chromium. Cemented carbides are composites, often consisting of tungsten-carbide particles embedded in a cobalt-rich matrix, and are because of their extreme hardness used in for example cutting tools and drills. LÄS MER