Sökning: "metals"

Visar resultat 21 - 25 av 935 uppsatser innehållade ordet metals.

  1. 21. Slamhantering från reningsverk : Ett utmanande problem

    Kandidat-uppsats, Linnéuniversitetet/Sjöfartshögskolan (SJÖ)

    Författare :Isac Graaf; [2023]
    Nyckelord :sewage. waste water; sewage sludge treatment; Slamhantering; Avloppsslam; rening av slam; slaminnehåll; avloppsrening;

    Sammanfattning : Vid vattenrening produceras slam som restprodukt. Slam innehåller en stor mängd ämnen, såsom metaller, medicinrester och olika näringsämnen. I Sverige produceras flera hundra tusen ton årligen. Innehållet måste hanteras, men hur görs det idag och hur kommer det att hanteras i framtiden. LÄS MER

  3. 22. Investigation of the Microstructure of Plastically Deformed Cemented Carbide

    Master-uppsats, KTH/Materialvetenskap

    Författare :Felicia Larsson; [2023]
    Nyckelord :;

    Sammanfattning : During machining operation, cemented carbide tools are exposed to high loads and temperatures, which eventually leads to plastic deformation of the tool material. The aim of this work was to investigate if the microstructures of creep deformed micro grain cemented carbides can be linked to alloying elements and mechanical properties. LÄS MER

  4. 23. Evaluation of five hardwood species from Zambia to produce fuel pellets for cooking purposes : Study with a single pellet press including pellet production, post production testing and X-ray examinations

    Kandidat-uppsats, Karlstads universitet/Avdelningen för energi-, miljö- och byggteknik

    Författare :Annika Silvennoinen; [2023]
    Nyckelord :Pelletizing; Pellet Production; Wood Species; X-Ray examinations; Pelletisering; Pelletstillverkning; Träslag; Röntgenundersökningar;

    Sammanfattning : 81% of the population in sub-Saharan Africa relies on charcoal and firewood to cover their energy needs for cooking. In Africa charcoal is usually produced by burning tree in a traditional kilns and then the food is cooked with a carbon-fired stoves indoors. LÄS MER

  5. 24. Utilizing wood ash to stimulate algal growth in mine waters from northern Sweden

    Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Katelyn Murphy; [2023]
    Nyckelord :acid rock drainage; acid mine drainage; controlled eutrophication;

    Sammanfattning : Acid rock drainage (ARD), caused by the oxidation of sulphide bearing minerals, continues to be an environmental impact of both closed and operational mines, leading to waters with low pH values and high metal concentrations (Park et al., 2019). LÄS MER

  7. 25. Moving Air : A Comparative Study of Physical Controllers and Hand Tracking in Virtual Reality

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ólafur Konráð Albertsson; [2023]
    Nyckelord :Virtual reality; hand tracking; training; comparative study;

    Sammanfattning : Onboarding is a procedure used to familiarize new employees with the details of a new industry, and VR and AR training are increasingly being used for role-specific medical field experiences. This study aims to explore the affordances and challenges of a task-specific shaped controller vs. a regular controller in a VR training scenario. LÄS MER