Sökning: "sulphides"

Visar resultat 1 - 5 av 37 uppsatser innehållade ordet sulphides.

  1. 1. Character and Evolution of Ore Mineralisation in the Te-Rich Enåsen Au-Cu Deposit, Central Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Simon Pieslinger; [2023]
    Nyckelord :ore geology; partial melting; quenching textures; symplectite; tellurides; critical metals;

    Sammanfattning : The Enåsen gold deposit is located in Gävleborg county in central Sweden. Mining operations at Enåsen took place from 1984 to 1991 with Au as the main target for exploitation. The deposit has been interpreted as a metamorphosed Palaeoproterozoic analogue to near-recent epithermal Au mineralisations of a high sulphidation type. LÄS MER

  3. 2. Evaluating a method using pXRF for measuring sulphur along Ostlänken

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Malin Häägg; [2022-09-09]
    Nyckelord :;

    Sammanfattning : Ostlänken (The Eastern link) is going to be a new main railway in Sweden, between Södertälje and Linköping. The railroad will go through areas where there could be high sulphide concentration in the rocks, and during the construction, large amounts of rock is going to be excavated. LÄS MER

  4. 3. Investigation of Non-Metallic Inclusions in Inconel 718 by Using Conventional Cross-Sectioned (CS) Method and Experimental Extraction Metal-Surfaced (MS) Method

    Master-uppsats, KTH/Materialvetenskap

    Författare :Mehreen Baig; [2022]
    Nyckelord :;

    Sammanfattning : Inconel 718 is a nickel-based alloy, predominantly used in the oil and gas industry, in aircraft engines as well as in gas turbine engines. It provides exceptional properties like high strength, creep resistance, corrosion resistance and long fatigue life at high temperatures as well as in cryogenic environments. LÄS MER

  5. 4. Köldegenskaper hos RME

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Haben Tesfamariam Yebyo; [2022]
    Nyckelord :Köldegenskaper; biodiesel; RME; mättade fettsyrametylester; monoglycerider; kristallisation;

    Sammanfattning : Biodiesel är ett bra alternativ till petroleumdiesel. Produktion av biodiesel är en relativt enkel process. Vegetabilisk olja eller animaliskt fett reagerar med alkohol och omförestras till biodiesel (monoalkylestrar). En homogen katalysator, vanligen KOH eller NaOH, behövs för att reaktionen ska ske snabbt. LÄS MER

  7. 5. Evaluation of 25 MHz Ultrasonic Testing for Detection of Non-Metallic Inclusions in Steel

    Uppsats för yrkesexamina på avancerad nivå, KTH/Materialvetenskap

    Författare :Henrietta Isaksson; [2021]
    Nyckelord :Ultrasonic Testing; High Frequency Ultrasonic Testing; Quantification of inclusions; Fatigue Testing; Ultraljudstestning; Högfrekvent ultraljudstestning; Kvantifiering av inneslutningar; Utmattningstestning;

    Sammanfattning : Quantification of inclusions is important since it is correlated to the steel’s fatigue properties. One method that could be further developed for detection of inclusions in steel is ultrasonic testing (UST). LÄS MER