Sökning: "ferric iron"

Visar resultat 16 - 20 av 26 avhandlingar innehållade orden ferric iron.

  1. 16. Growth and survival of Acidithiobacilli in Acidic, metal rich environments

    Författare :Stefanie Mangold; Mark Dopson; Axel Schippers; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Acidithiobacilli are acidophilic microorganisms that play important roles in many natural processes such as acidification of the environment, influencing metal mobility, and impacting on global sulfur and iron cycles. Due to their distinct metabolic properties they can be applied in the industrial extraction of valuable metals. LÄS MER

  3. 17. Metals released from mine waste deposits : Redistribution and fluxes through geological barriers

    Författare :Karsten Håkansson; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Sammanfattning : The redistribution of metals from point sources (sulphidic mine waste) is presented in this thesis. The impact on surface water systems is determined from water quality and sediment data. It is generally found that lakes act as sinks for the metals, to a different extent for eachmetal. LÄS MER

  4. 18. Function and Adaptation of Acidophiles in Natural and Applied Communities

    Författare :Stephan Christel; Mark Dopson; Michael Schlömann; Linnéuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Acidophiles; Biomining; Psychrophiles; Adaptation; Acid Sulfate Soil; Redox Control; Ecology; Ekologi;

    Sammanfattning : Acidophiles are organisms that have evolved to grow optimally at high concentrations of protons. Members of this group are found in all three domains of life, although most of them belong to the Archaea and Bacteria. LÄS MER

  5. 19. Electronic structure investigations of transition metal complexes through X-ray spectroscopy

    Författare :Meiyuan Guo; Marcus Lundberg; Hélène Bolvin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; transition metal complexes; x-ray spectroscopy; electronic structures; Kemi; Chemistry;

    Sammanfattning : Catalysts based on the first-row (3d) transition metals are commonly seen in chemical and biological reactions. To understand the role of the transition metal in the catalyst, the element specific technique core level spectroscopy is used to probe the electronic structure and geometric properties centered around the metal site. LÄS MER

  7. 20. Characterization of two novel fatty acid dioxygenases : Linoleate diol synthase and manganese lipoxygenase

    Författare :Chao Su; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical biosciences; Dioxygenase; hemeprotein; lipoxygenase; metalloenzyme; oxylipin; fatty acid; manganese-protein; Gaeumannomyces graminis; Farmaceutisk biovetenskap; Biopharmacy; Biofarmaci; galenisk farmaci; Pharmaceutics;

    Sammanfattning : Two classes of fatty acid dioxygenases, PGH synthases (hemeproteins) and lipoxygenases (non-heme iron proteins), are of eminent pharmacological importance. This thesis describes a PGH synthase-related dioxygenase designated linoleate diol synthase (LDS) and the first native occurring manganese-containing lipoxygenase. LÄS MER