Sökning: "quartz crystal"

Visar resultat 1 - 5 av 24 uppsatser innehållade orden quartz crystal.

  1. 1. Petrography of impactites from the Dellen impact structure, Sweden

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Robert Mroczek; [2023]
    Nyckelord :Dellen; Impact; structure; magnetite; apatite; shock waves; shock-metamorphic; features; Impactite; petrography; scanning electron microscope; SEM; geology; Earth and Environmental Sciences;

    Sammanfattning : Identification and characterization of shock-metamorphic features in hypervelocity impact craters is important for our understanding of how shock waves interact with geologic materials and how impact craters form, which in turn is essential to our understanding of what role impact cratering played in the development of our solar system. Of particular interest are accessory minerals like apatite, which contains various volatiles that can affect the atmosphere of a body, or magnetite whose magnetic properties constitute a remote sensing indicator which allows us to study and understand the internal structures of distant bodies. LÄS MER

  3. 2. Grön fältspat i Varbergskomplexet

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Lara Schönherr; [2022]
    Nyckelord :färg; charnockit; fältspat; Varberg; optisk mineralogi; geokemi; Earth and Environmental Sciences;

    Sammanfattning : Den kända Varbergscharnockiten från Hallandskusten är en granitisk, pyroxenförande bergart som har både magmatiska och metamorfa drag. Bergarten har deformerats och omkristalliserats under högmetamorfa förhållanden men har sannolikt redan sedan den ursprungliga kristallisationen varit pyroxenförande. LÄS MER

  4. 3. THE ROLE OF WATER PURITY IN EMULSIFICATION AND REMOVAL OF OIL FROM SOLID SURFACES

    Master-uppsats, Malmö universitet/Institutionen för biomedicinsk vetenskap (BMV)

    Författare :Andriani Tsompou; [2021]
    Nyckelord :ultra-pure water; detergency; detachment of oil from solid surfaces; washing; cleaning;

    Sammanfattning : Detergents are broadly used in our everyday life for cleaning and washing procedures. They are however, a source of water pollution and can have a negative effect on human health and the environment. To reduce their negative impact, a new trend of using only pure water for washing and cleaning applications is being implemented. LÄS MER

  5. 4. Electrically Modified Quartz Crystal Microbalance to Study Surface Chemistry Using Plasma Electrons as Reducing Agents

    Master-uppsats, Linköpings universitet/Kemi

    Författare :Pentti Niiranen; [2021]
    Nyckelord :Plasma enhanced chemical vapor deposition; PECVD; Quartz crystal microbalance; QCM;

    Sammanfattning : Metallic films are important in various applications, such as electric devices where it can act as contacts. In electrical devices, the substrate typically consists of silicon dioxide (SiO2) which is a temperature-sensitive substrate. LÄS MER

  7. 5. Modeling transport phenomena with COMSOL Multiphysics - Adsorptive membrane fouling in lignocellulosic biorefineries and lessons learned from it

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Linnéa Petersson; [2020]
    Nyckelord :QCM-D; Quartz crystal microbalance with dissipation monitoring; Hemicellulose; GGM; Galactoglucomannans; Adsorption; Membrane fouling; COMSOL; Chemical engineering; Kemiteknik; Technology and Engineering;

    Sammanfattning : The separation of hemicelluloses, like glactoglucomannans, from lignocellulosic process streams is an important step in building profitable lignocellulosic biorefineries. The most common method for the separation is membrane filtration, however, it has the draw-back of being sensitive to membrane fouling. LÄS MER