Sökning: "p-forms"

Hittade 5 uppsatser innehållade ordet p-forms.

  1. 1. The Impact of Swampland Conjectures

    Master-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Daniel Nilsson; [2023]
    Nyckelord :String theory; Quantum gravity; Swampland program; Effective field theories;

    Sammanfattning : The Swampland program is way of sorting effective field theories based on conjectures of how an effective field theory consistent with quantum gravity should look like. In this thesis we take a closer look at the No Global Symmetries Conjecture, the Weak Gravity Conjecture, the de Sitter Conjecture and the Trans-Planckian Censorship Conjecture. LÄS MER

  3. 2. Phosphorus speciation across elevation and vegetation in soils of the subarctic tundra : A solution 31P NMR approach

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Johannes Krohn; [2017]
    Nyckelord :Climate warming; arctic ecosystems; tundra; phosphorus; Solution 31P NMR;

    Sammanfattning : In tundra, phosphorus (P) is an important macronutrient for plants and microorganisms. A major fraction of P exists as organic compounds in the topsoil which can be mineralized to bioavailable inorganic P. LÄS MER

  4. 3. Phosphorus in the sediment of L. Hällerstadsjön: spatial distribution, fractions and release to the water volume

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :NANA OSAFO; [2016]
    Nyckelord :Bioavailable phosphorus; Eutrophication; Phosphorus fractionation; Phosphorus flux; Sediments.;

    Sammanfattning : : In freshwater systems phosphorus (P) is the limiting element in the cause of eutrophication. In many Swedish lakes, causes of eutrophication have been attributed to more of internal loading than external since the external loading has been fairly well managed. LÄS MER

  5. 4. Phosphorus losses from agricultural land to surface waters : impact of grazing and trampling by horses

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

    Författare :Mohammed Masud Parvage; [2010]
    Nyckelord :phosphorus; surface water; horse paddock; animal grazing; clay soil; agricultural land;

    Sammanfattning : The number of horses in Sweden has increased in recent decades, reaching over 300,000 in 2009. The horses are kept on 300,000 ha representing 10% of total agricultural land in Sweden. LÄS MER

  7. 5. A reconstruction of subglacial processes based on a classification of erosional forms at Ramsvikslandet, SW Sweden

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Barbro Noresten; [2008]
    Nyckelord :glacial erosion; subglacial processes; p-forms; roches moutonnées; Bohuslän; subglaciala processer; p-former; rundhällar; Earth and Environmental Sciences;

    Sammanfattning : Ramsvikslandet on the Swedish west coast is characterized by exposed bedrock hills with numerous glacial erosional forms. Previous research in the area has mostly focused on individual forms and their relation to the larger forms, such as roches moutonnées. LÄS MER