Search for dissertations about: "Cu and Fe cycle"

Showing result 6 - 10 of 10 swedish dissertations containing the words Cu and Fe cycle.

  2. 6. Fractionation of the stable silicon isotopes : analytical method developments and selected applications in geochemistry

    Author : Emma Engström; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : During the last few decades, variations in the 'natural' isotopic abundances of stable elements (termed 'fractionation') have received considerable interest from the scientific community. Though analytical methods and techniques for the measurement of isotopic abundances with adequate figures of merit have been available for light elements (e.g. READ MORE

  4. 7. Geochemistry of suspended material and sediments in boreal lakes

    Author : Elsa Peinerud; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : The geochemistry of suspended material and sediment has been studied in four boreal lakes: Lakes Kutsasjärvi, Sakajärvi, and Ala Lombolo in northern Sweden and Lake Imandra on the Kola Peninsula, Russia. Suspended material and filtered water have been sampled in time series and depth profiles. READ MORE

  5. 8. Geochemistry of the Kola River and Lake Imandra, northwestern Russia

    Author : Larisa Pekka; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : The impact from mining and large-scale agricultural activities on levels and migration of metals within the Kola River and Lake Imandra has been studied in detail. Evaluation of the pollution status in the Kola River is based on sampling of the dissolved (0. READ MORE

  6. 9. Iron in Haem Biosynthesis. Structural Studies of Ferrochelatase and Frataxin

    Author : Tobias Karlberg; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Naturvetenskap; Natural science; Molekylär biofysik; Molecular biophysics; Biomedicinska vetenskaper; Biomedical sciences; protein crystallography; ferrochelatase; haem biosynthesis; iron; frataxin;

    Abstract : Ferrochelatase catalyses the synthesis of heme by inserting Fe(II) into protoporphyrin IX. The structure of ferrochelatase from yeast has been determined (2.4 Å). The structure is homodimeric with each of the monomer made up of two Rossmann type domains with an active-site cleft between them. READ MORE

  7. 10. A geochemical study of the Kafue River, Zambia

    Author : Ulf Pettersson; Luleå tekniska universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

    Abstract : Hydrogeochemical processes and the impact from mining activities within the Kafue River basin, Zambia, have been studied during an annual cycle (March 1995-April 1996). Samples of dissolved (0.45mm) solids have been collected on weekly, once every two weeks and monthly bases at several locations along the river. READ MORE