Sökning: "Accumulation"

Visar resultat 1 - 5 av 1837 avhandlingar innehållade ordet Accumulation.

  1. 1. Accumulation from Below : Smallholders and public irrigation investments in Kilombero Valley, Tanzania

    Författare :Victor Mbande; Lowe Börjeson; Johan Berg; Liwenga Liwenga; Klara Fischer; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Accumulation; social differentiation; wealth ranking; irrigation; smallholders; agriculture transformation; land use change; rice boom; progressive farmers; development; geografi med kulturgeografisk inriktning; Geography with Emphasis on Human Geography;

    Sammanfattning : Smallholders in Tanzania and elsewhere in Africa are increasingly differentiated. This thesis contributes to the empirical and conceptual understanding of the differentiation processes in irrigation by following the internal dynamics among smallholders linked to public investments in improving smallholder initiated small scale irrigation schemes in Kilombero district, Tanzania. LÄS MER

  3. 2. Growth, Accumulation, Crisis : With New Macroeconomic Data for Sweden 1800-2000

    Författare :Rodney Edvinsson; Karl Gratzer; Satya Datta; Olle Krantz; Jan Bohlin; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; GDP; employment; national accounts; Sweden; crisis; growth; capital; capitalism; accumulation; profit; surplus; economic history; growth theory; Marxism; long wave theory; business cycle; depression; recession; Economic history; Ekonomisk historia;

    Sammanfattning : This dissertation has two main objectives. The first one is to construct historical macroeconomic series for Sweden using a consistent method throughout the relevant periods, and which rely on modern methods of national accounting. LÄS MER

  4. 3. Arsenic accumulation in various plant types

    Författare :Claes Bergqvist; Maria Greger; Sylvia Lindberg; Håkan Asp; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Accumulation; arsenic; distribution; speciation; Plant Physiology; växtfysiologi;

    Sammanfattning : .... LÄS MER

  5. 4. Arsenic accumulation in plants for food and phytoremediation : Influence by external factors

    Författare :Claes Bergqvist; Maria Greger; Sylvia Lindberg; Lena Ma; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Arsenic; accumulation; availability; distribution; habitat; phy-toremediation; rhizosphere; redox potential; speciation; Plant Physiology; växtfysiologi;

    Sammanfattning : Arsenic (As) appears in the environment as various As species, which may vary in plant uptake and toxicity. Moreover, As exposure may vary between habitat due to availability and speciation, both of which are influenced by redox potential. To decrease As uptake, addition of silicate may be a tool. LÄS MER

  7. 5. Metal accumulation by plants : evaluation of the use of plants in stormwater treatment

    Författare :Åsa Fritioff; Maria Greger; Lena Kautsky; Bert Wolterbeek; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Elodea canadensis; Potamogeton natans; uptake; translocation; distribution; toxicity; salinity; temperature; and leakage; Plant physiology; Växtfysiologi;

    Sammanfattning : Metal contaminated stormwater, i.e. surface runoff in urban areas, can be treated in percolation systems, ponds, or wetlands to prevent the release of metals into receiving waters. Plants in such systems can, for example, attenuate water flow, bind sediment, and directly accumulate metals. LÄS MER