Sökning: "substrate surface influence"

Visar resultat 21 - 25 av 28 uppsatser innehållade orden substrate surface influence.

  1. 21. Ecology of the lichen Cladonia botrytes in Sweden

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Kristine Bogomazova; [2012]
    Nyckelord :logging; stumps; habitat; species occurrence;

    Sammanfattning : ABSTRACT Rapid changes in the forest structure due to logging strongly affect lichen vegetation and can exceed tolerance of many organisms while being beneficial to others. Cladonia botrytes was supposed to be obligately lignicolous and having a high portion of the occurrences on stumps on clear-cuts. LÄS MER

  3. 22. Diurnal variation in methane flux in a low-arctic fen in Southwest Greenland

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Bjarne Munk Lyshede; [2012]
    Nyckelord :geography; physical geography and ecosystem analysis; diurnal; methane; wetland; Arctic; Greenland; Earth and Environmental Sciences;

    Sammanfattning : Popular science: A Day in the Life of a Methane Bog Methane gas is continuously released from wetlands around the world. In Kobbefjord, Greenland the release of methane is low during the cold of winter and higher in warm summer months. But the amount released also varies from day to night; a pattern that has to do with both temperature and light. LÄS MER

  4. 23. Renhetens inverkan på vidhäftningen mellan gammal betong och pågjutning

    Uppsats för yrkesexamina på grundnivå, KTH/Byggteknik och design

    Författare :Fernand Ndayizeye; Maxamed Abdiraxman; [2012]
    Nyckelord :Cleanliness; bond between old and new concrete; overlay; test method; Renhet; vidhäftning; provningsmetod;

    Sammanfattning : Detta examensarbete har genomförts på uppdrag av CBI Betonginstitutet. Handledare till examensarbetet har varit professor Johan Silfwerbrand från CBI och examinator Per Roald från Kungliga Tekniska Högskolan i Haninge. LÄS MER

  5. 24. Growth and characterization of graphene on 4H-SiC(0001)

    Master-uppsats, Halvledarmaterial; Tekniska högskolan

    Författare :Annop Ektarawong; [2012]
    Nyckelord :Epitaxial graphene; SiC; LEEM; LEED; PES;

    Sammanfattning : Thermal annealing 4H-SiC(0001) substrates to produce epitaxial graphene on Si-terminated SiC was performed using five different procedures, i.e. direct and indirect current heating at different based pressures and a temperature of about 1300 . LÄS MER

  7. 25. Recent developments in wetland technology for wastewater treatment

    Magister-uppsats, Sektionen för ekonomi och teknik (SET)

    Författare :Xing An; [2012]
    Nyckelord :;

    Sammanfattning : Constructed wetlands for wastewater treatment have substantially developed in the last decades. As an eco-friendly treatment process, constructed wetlands may enable the effective, economical, and ecological treatment of agricultural, industrial, and municipal wastewater. LÄS MER