Sökning: "L 80"

Visar resultat 16 - 20 av 134 uppsatser innehållade orden L 80.

  1. 16. Carbon dioxide-based pump system for portable HPLC equipment

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Mikrosystemteknik

    Författare :Sofia Göransson; [2022]
    Nyckelord :Microsystem Technology; Flow Chemistry; Chemical Analyses; High-Performance Liquid Chromatography; HPLC; Pump System; Miniaturise; Portable; Pressurised Carbon Dioxide; PCO; High-Pressure;

    Sammanfattning : To make chemical analysis available both practically and economically, one approach is to miniaturise the equipment needed for the analysis. High-performance liquid chromatography (HPLC) is an example of a flow chemistry analysis system where active work is performed to achieve miniaturised systems. LÄS MER

  3. 17. Hg concentration in humus soils in different Arctic and Subarctic tundra vegetation types : Including a method comparison for analyzing metals in humus soils

    Kandidat-uppsats,

    Författare :Alice Sandvärn; [2022]
    Nyckelord :Hg concentration; vegetation types; Arctic tundra; elevation gradient; XRF;

    Sammanfattning : Heavy metals, such as mercury (Hg), have a long residence time in the atmosphere and can be transported long distances and deposited in the Arctic via wet and dry deposition. Still, there are few studies on the complex mercury cycle and how different plant groups absorb Hg. LÄS MER

  4. 18. Rumen metabolism and digestibility in dairy cows offered diets with forest by-products

    Master-uppsats, SLU/Dept. of Animal Nutrition and Management

    Författare :Muhammad Irfan; [2022]
    Nyckelord :Dairy cows; Wood by-products; Rumen digestibility; Metabolism; Aspen tree;

    Sammanfattning : Swedish dairy industry faced a cris i s of feed shortage in summer of 2018, followed by a dry autumn. The forage shortage was severe in some regions. During that period Swedish g overnment intervened by introducing a 1. LÄS MER

  5. 19. Fibres from agricultural hemp waste

    Kandidat-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Ella Kärkkäinen; Åsa Älgbrant; Simon Kronberg; [2021]
    Nyckelord :Hemp fibres; hemp residue; unretted hemp; nonwoven hemp;

    Sammanfattning : There is an increasing demand for natural fibres in the textile industry as a consequence of the negative impact of the industry on the environment. Svensk Hampaindustri (SHI) is currently growing hemp in Sweden for its seeds. This leaves residue in the form of hemp stems that could be processed for textile products. LÄS MER

  7. 20. Removal of PFASs and Uranium from Drinking Water Using SorbixTM Anion Exchange Resin : Effects of Sodium Chloride on the Removal Efficiency

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Fawaz Rustum; [2021]
    Nyckelord :Perfluorinated; polyflourinated; adsorption; fluorotelomer; salt; perfluorerade; polyfluorerade; adsorption; fluorotelomer; salt;

    Sammanfattning : The increasing awareness towards PFAS pollution makes it increasingly important to treat. Many agencies over the globe, including the Swedish Food Agency, are introducing ever so strict control over PFASs in drinking water. LÄS MER