Sökning: "Particle sizing"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Particle sizing.

  1. 1. Design av ångexplosionsreaktor : Utformning av ångexplosionsreaktor för laborativt bruk

    Uppsats för yrkesexamina på grundnivå, Mittuniversitetet/Institutionen för naturvetenskap, design och hållbar utveckling (2023-)

    Författare :Jonatan Nordlund; [2023]
    Nyckelord :Steam explosion; pretreatment; biomass; lignocellulose; laboratory use; Ångexplosion; förbehandling; ångbehandling; biomassa; lignocellulosa; laborativt bruk;

    Sammanfattning : Förbehandling av lignocellulosa genom ångexplosion är en förbehandling av biomassa som förändrar strukturen i fibrernas cellväggar. Vid förbehandlingen värms biomassa med mättad ånga under tryck till minst 140 ˚C, detta leder till att flyktiga ämnen avgår från biomassan. LÄS MER

  3. 2. Comparing different methods of measuring particle size for pharmaceutical excipients

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Jiawen Wang; [2022]
    Nyckelord :particle size; comparison; Malvern analysis; Qicpic analysis; Pharmaceutical technology; Technology and Engineering;

    Sammanfattning : In pharmaceutical science, particle size is one of the most fundamental parameters of materials, but different particle-sizing analysis methods lack a uniform standard for measuring irregular particle size, making it difficult to compare the accuracy and applicability of different particle-sizing analysis methods. Experiments on excipients used in pharmaceuticals are carried out in this paper by laser diffraction analysis (Malvern wet and dry), dynamic image analysis (Qicpic), and microscopic methods (Qicpic, SEM, and light microscopy) to determine the applicability and limitations of each method, as well as to clarify their advantages and disadvantages. LÄS MER

  4. 3. Size detection limits of spICP-MS for analysis of nanoparticles in environmental media

    Kandidat-uppsats, SLU/Dept. of Soil and Environment

    Författare :Eline Goossens; [2018]
    Nyckelord :nanoparticle; detection limit; single particle ICP-MS; environmental analysis;

    Sammanfattning : Nanoparticles (NP) are widely integrated in our everyday lives, such as consumer products, health, agriculture, food, etc. This has resulted in a growing concern for their possible harmful effect on human health and the environment and the demand for characterization. LÄS MER

  5. 4. Measuring volatile nicotine from electronic cigarettes

    Master-uppsats, Lunds universitet/Ergonomi och aerosolteknologi

    Författare :Simon Lundegard; [2017]
    Nyckelord :AMS; denuder; e-juice; electronic cigarettes; NGI; nicotine; SMPS; Technology and Engineering; Chemistry;

    Sammanfattning : This thesis is focused on electronic cigarettes and the formulations (also known as e-juices) associated with these. The reason is that there have been countless studies on the health effects and nicotine delivery of normal cigarettes, but not as much on electronic cigarettes. LÄS MER

  7. 5. Development of a method to measure “soft particles” in the fuel

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Botond Csontos; [2016]
    Nyckelord :Biodiesel; Particle sizing; Particles; Filter blocking; Nozzle hole fouling.;

    Sammanfattning : As environmental awareness raises the expectations to reduce emission of modern diesel engines are growing as well. Fuel diversity and the advanced injector systems requires even more attention on an ever existing problem which is called nozzle hole fouling. LÄS MER