Sökning: "Ion-exchange"

Visar resultat 1 - 5 av 83 uppsatser innehållade ordet Ion-exchange.

  1. 1. Surface functionalization of cellulose fibers and exploration of its influence in ion exchange chromatography

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Anna Wessén; [2023]
    Nyckelord :Ion-exchange chromatography; membrane chromatography; surface extension; grafting; copolymerization; free-radical polymerization; Jonbyteskromatografi; membrankromatografi; ytförlängning; ympning; sampolymerisation; fri radikal polymerisation;

    Sammanfattning : Kromatografiska metoder kan användas för en mängd olika tillämpningar, inklusive separation, rening och analys av biomolekyler och kemikalier. Membrankromatografi är en av de nya kromatografiteknikerna som expanderar snabbt eftersom den tillåter hög masstransport genom den stationära fasen, vilket resulterar i en mer tidseffektiv process. LÄS MER

  3. 2. Biopolymers processed and used as enzyme carriers

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Dániel Mészáros; [2023]
    Nyckelord :Biobased materials; plasticized sodium alginate; water stability; extraction kinetics; enzyme carrier; Biobaserade material; Mjukgjort natriumalginat; Vattenstabilitet; extraktionskinetik; Enzymbärare;

    Sammanfattning : Syftet med detta masterprojekt var att undersöka möjligheten att använda biobaserat, mjukgjort natriumalginat (NaAlg) som enzymbärare. Alginaterna görs traditionellt bearbetbara genom att tillsätta olika mjukgörare, såsom polyoler (glycerol, sorbitol, etc.), i detta arbete användes glycerol. LÄS MER

  4. 3. Towards time-resolved cryo-EM of SARS-CoV-2 replication-transcription complex and Staphylococcus aureus DNA gyrase

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Anna Králová; [2023]
    Nyckelord :time-resolved cryo-EM; DNA gyrase; SARS-CoV-2; replication-transcription complex; protein purification;

    Sammanfattning : Time-resolved cryo-EM has already provided ground-breaking discoveries in various fields, including structural biology, biochemistry, and drug development. Compared to traditional structural biology methods where mostly stabilized conformations are reconstructed, the main advantage of time-resolved cryo-EM is its ability to capture dynamic processes in biological samples at near-atomic resolution, which allows for studying biological structures as they change and interact in real-time. LÄS MER

  5. 4. Ammonium and nitrate sorption by biochar

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

    Författare :Yasser Alrhban; [2023]
    Nyckelord :biochar nitrogen; retention; dialysis; absorption; adsorption; ammonium; nitrate;

    Sammanfattning : Biochar has recently drawn attention due to its ability to increase soil fertility, sequester carbon and its expected effect on reducing the leaching of elements from the soil, especially nitrogen. The possibility of using biochar as a soil amendment to reduce the amount of nitrogen leaching, and then reducing the quantities of nitrogen fertilizers used in agriculture to avoid the bad environmental effects has become a matter of great interest. LÄS MER

  7. 5. Dielectric properties of ion-exchanged electrotechnical insulation papers : A study on the properties of novel papers

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

    Författare :Dan Selsmark; [2023]
    Nyckelord :Paper insulation; Frequency Domain Spectroscopy; Dielectric response; Karl Fischer titration; Dielectrics; Pappersisolering; Frekvensdomänsspektroskopi; Dielektrisk respons; Karl Fischer titrering; Dielektrika;

    Sammanfattning : Electrical insulation papers are a widely used group of papers in insulation applications and has been used for more than 100 years. Common applications include use as the dielectric medium in capacitors and insulation material in cables, bushings and transformers. LÄS MER