Sökning: "winter range"

Visar resultat 1 - 5 av 104 uppsatser innehållade orden winter range.

  1. 1. Greenhouse gas emissions from peat soil thawing in spring : a comparison between fertilized and unfertilized soil

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

    Författare :Fanny Otterlin Karlsson; [2024]
    Nyckelord :agricultural soil; carbon dioxide; freeze-thaw cycles; nitrous oxide; soil temperature; water content;

    Sammanfattning : Peat soils drained for agriculture and forestry contribute to a significant amount of greenhouse gas emissions. Nitrous oxide is a greenhouse gas with high warming potential and agriculture in general accounts for about 70 % of nitrous oxide emissions. LÄS MER

  3. 2. Sustainable use of calcium nitrate fertilizer under variable precipitation, soil properties and crop management

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

    Författare :Liliana Marcela Daza Gomez; [2023]
    Nyckelord :nitrogen.; calcium nitrate; ammonium-based fertilizers; urea; nitrate leaching; nitrous oxide emissions; crop yield;

    Sammanfattning : Application of nitrogen fertilizers in agriculture contributes substantially to global greenhouse gas emissions and nitrogen leaching. Accordingly, there is a need to increase knowledge about sustainable farming practices to reduce nitrogen losses to the environment without curtailing crop harvest. LÄS MER

  4. 3. INDUCTIVE RAILWAY SWITCH POINT HEATING : Improved control algorithm and phase compensation analysis for an inductive turnout heating system, and comparison with a resistive heating system

    Uppsats för yrkesexamina på grundnivå, Mälardalens universitet/Akademin för ekonomi, samhälle och teknik

    Författare :Erik Nordlund; [2023]
    Nyckelord :Inductive switch point heating; Turnout heating; railway turnout heating; Inductive heating;

    Sammanfattning : Railway turnout heating is essential during the winter because snow and ice can hinder the movement of the switch. In Sweden, heating has traditionally been done using resistive heating wires mounted to the stock rail, but the technology is outdated and generally exhibits low efficiency and performance. LÄS MER

  5. 4. Creating safe, lively and attractive street spaces in city centres : A case study of Nygatan and Järnagatan in Södertälje

    Master-uppsats, KTH/Urbana och regionala studier

    Författare :Bakhaya Jeanette; Felicia Norlin; [2023]
    Nyckelord :sustainability; safe; alive; attractive; street space; city centre; street; design; urban form; mobility; environment; social; enjoyment; movement; public places; pedestrian friendly; hållbarhet; trygg; levande; attraktiv; gaturum; stadskärna; gata; utformning; stadsform; mobilitet; miljö; socialt; njutning; rörelse; offentliga platser; gångvänligt;

    Sammanfattning : Throughout time, cities have been built in different ways and city structures can look different in different places in the world. The urban planning ideal has changed and small narrow alleys in the city have today been replaced by large roads adapted for cars. LÄS MER

  7. 5. Future of Sustainable Mobility in Nordic Winter Cities : An explorative study of sociotechnical imaginaries

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Moa Ribjer; [2023]
    Nyckelord :Winter Cities; Sustainable Mobility; Society Transformation; Sustainable Transition; Mobility Systems; Sociotechnical Imaginaries; vinterstäder; hållbar mobilitet; samhällsomställning; hållbar transformation; mobilitetssystem; sociotekniska föreställningar;

    Sammanfattning : The thesis aims to explore future mobility system alternatives in the context of “winter cities” to achieve a more sustainable society. This is done by interviewing a broad range of mobility experts - encompassing those focused on cities in the northern regions and those with global expertise. LÄS MER