Sökning: "Layer burning"

Visar resultat 1 - 5 av 20 uppsatser innehållade orden Layer burning.

  1. 1. Differences and similarities in stand characteristics after prescribed burning and wildfire : implications for conservation of forest biodiversity

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Hannah Sophie Jakob; [2023]
    Nyckelord :coarse woody debris; conservation; biodiversity; boreal forest; Daldinia loculata; Fennoscandia; prescribed burning; regeneration; wildfire; woodpecker;

    Sammanfattning : 1. Wildfires are a natural disturbance in the boreal forests of Fennoscandia and have shaped and formed forests in the past, resulting in very heterogeneous forests containing large amounts of dead and living trees in various age classes. LÄS MER

  3. 2. Linking the selectivity of varying surface phases of a real palladium catalyst toward specific methane oxidation pathways with Ambient Pressure X-ray Photoelectron Spectroscopy

    Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Författare :Ulrike Küst; [2023]
    Nyckelord :APXPS; catalysis; palladium; methane; Physics and Astronomy;

    Sammanfattning : The study of heterogeneous catalysis, especially within methane oxidation, is of high importance in order to more efficiently remove unburned methane from bio-fuel exhausts. This is relevant as bio-fuel engines will replace those driven by fossil fuels in the coming decades. LÄS MER

  4. 3. A Comparative Study of Fires in Corners and Along Walls

    Kandidat-uppsats, Lunds universitet/Avdelningen för Brandteknik

    Författare :Josef Utterfors; Adam Tegenfeldt; [2022]
    Nyckelord :Fire; wall; corner; hot gas layer; flame height; plume temperature; Technology and Engineering;

    Sammanfattning : The topic of fires in corners and along walls has been studied previously, however, two different studies conducted in 1987 and 2018 respectively, produced conflicting results regarding plume temperature for fires along walls, as well as hot gas layer temperature for both fires in corners and along walls. This thesis seeks to add data and clarification about fires in corners and along walls. LÄS MER

  5. 4. Korslimmat trä : Studie om delaminering vid brandexponering för olika brandskyddsbehandlingar

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

    Författare :Vera Engvall; Zinar Zanasson; [2022]
    Nyckelord :Cross-laminated timber; delamination; charring carbonization ; surface requirements; Boverket s building regulations; PUR glue.; Korslimmat trä; delaminering; förkolning; ytskiktskrav; Boverkets byggregler; PUR-lim;

    Sammanfattning : Purpose: This work is based on the problem with the product cross-laminated timber and its properties in the event of fire. The reason for the problem is the glue used in the product and the lack of requirements for adhesion at high temperatures. Due to this, there is a risk of delamination in the event of a fire, i.e. LÄS MER

  7. 5. Study of solution-based Cs0.1FA0.9Pb(I0.9Br0.1)3 perovskite deposition with scalable technology for solar cell production : Characterization of optical properties and function of the solar cell

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Fysikalisk kemi

    Författare :Tasnim Laskar; [2021]
    Nyckelord :;

    Sammanfattning : Climate change is one of the greatest challenges of the 21st century and is the reason for several environmental changes on earth. One reason behind climate change includes the rise ingreenhouse gas emissions in the atmosphere due to the burning of coal, gas and oil, i.e. fossil fuels. LÄS MER