Sökning: "Per Dalén"

Hittade 3 uppsatser innehållade orden Per Dalén.

  1. 1. The impact of snow loads on snow galleries : An initial evaluation of the snow galleries on the Iron Ore Line in Northern Sweden

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Karin Björnlinger; [2022]
    Nyckelord :Snow load; snow gallery; steel; FEM; railway; cobweb effect; utilizations grade; Snölast; snögalleri; stål; FEM; järnväg; spindelnätseffekten; utnyttjandegrad;

    Sammanfattning : The snow galleries along the Iron ore railway line in northern Sweden have had major problems in recent years due to increasingly large snow loads. Despite great efforts reducing the loads by shoveling off the snow, several of the galleries have been damaged. LÄS MER

  3. 2. Determination of depositional environment and luminescence dating of Pleistocene deposits in the Biely Váh valley, southern foothills of the Tatra Mountains, Slovakia

    Master-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Ingrid Bejarano Arias; [2020]
    Nyckelord :Luminescence dating; glacifluvial deposits; sedimentological analysis; High Tatra Mountains; IRSL dating.; Earth and Environmental Sciences;

    Sammanfattning : The Tatra Mountains have had several glaciations during the Quaternary. The deposits located in the southern foothills were classified as glacifluvial, based on geomorphology, but its sediments have not been studied in detail. LÄS MER

  4. 3. Establishing a sustainable water supply in Chonyonyo, Karagwe, Tanzania

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Kristin Holmberg; [2017]
    Nyckelord :activated carbon filter; EPANET; microbiological barrier; MPN; pipe design criteria; storage effects; sustainable water supply; ultrafiltration; UV-light; water treatment; EPANET; hållbar vattenförsörjning; kolfilter; lagringseffekter; mikrobiologisk barriär; MPN; pipe design criteria; ultrafiltrering; UV-beredning; UV-ljus; vattenrening;

    Sammanfattning : The small village Chonyonyo, in the district Karagwe in the northwest of Tanzania has a shortage of safe drinking water. Women and children spend several hours a day fetching water and gathering firewood to boil the water to make it more suitable for drinking. LÄS MER