Visar resultat 1 - 5 av 88 avhandlingar innehållade ordet MINERALIZATION.

  1. 1. Enamel of primary teeth - morphological and chemical aspects

    Detta är en avhandling från Göteborg : University of Gothenburg

    Författare :Nina Sabel; Göteborgs universitet.; Gothenburg University.; [2012]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Demineralization; Enamel; Enamel hypoplasia; Microradiography; Mineralization; Neonatal line; Polarized light microscopy; Scanning electron microscopy; Secondary ions mass spectrometry; X-ray microanalysis;

    Sammanfattning : Enamel is one of the most important structures of the tooth, both from a functional and esthetic point of view. Primary enamel carries registered information regarding metabolic and physiological events that occurred during the period around birth and the first year of life. LÄS MER

  2. 2. Microbial mobilization and immobilization of soil nitrogen

    Detta är en avhandling från Per Bengtson, Ekologihuset, 223 62 Lund

    Författare :Per Bengtson; Lunds universitet.; Lund University.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ekologi; Ecology; growth rate; microbial activity; respiration; assimilation; immobilization; Nitrogen; mineralization;

    Sammanfattning : Microorganisms in forest ecosystems normally recycle nitrogen (N), such that gaseous losses and leaching are limited. Mobilization of organic N, including microbial N, and immobilization of inorganic N, especially NH4+, are the quantitatively most important N transformation processes. Various factors influence their rates, e.g. LÄS MER

  3. 3. Regulation of carbon dioxide emission from Swedish boreal lakes and the Gulf of Bothnia

    Detta är en avhandling från Umeå universitet

    Författare :Grete Algesten; Umeå universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical geography and sedimentology; lakes; boreal; Gulf of bothnia; CO2; NEE; DOC; mineralization; sediment; catchment; net heterotrophy; Naturgeografi och sedimentologi; NATURAL SCIENCES Earth sciences Exogenous earth sciences Physical geography; NATURVETENSKAP Geovetenskap Exogen geovetenskap Naturgeografi; Physical Geography; naturgeografi;

    Sammanfattning : The global carbon cycle is subject to intense research, where sources and sinks for greenhouse gases, carbon dioxide in particular, are estimated for various systems and biomes. Lakes have previously been neglected in carbon balance estimations, but have recently been recognized to be significant net sources of CO2. LÄS MER

  4. 4. Nitrogen transformations in wetlands: Effects of water flow patterns

    Detta är en avhandling från Limnology, Department of Ecology, Lund University

    Författare :Torbjörn Davidsson; Lunds universitet.; Lund University.; [1997]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hydrology; Hydrobiology; infiltration; subsurface flow; surface flow; wetland; nitrogen; Denitrification; mineralization; nitrification; marine biology; aquatic ecology; limnology; Marinbiologi; limnologi; akvatisk ekologi;

    Sammanfattning : In this thesis, I have studied nitrogen turnover processes in watermeadows. A watermeadow is a wetland where water infiltrates through the soil of a grassland field. LÄS MER

  5. 5. Reflection seismic investigation in the Skellefte ore district A basis for 3D/4D geological modeling

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Mahdieh Dehghannejad; Uppsala universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Skellefte district; reflection seismic; mineral exploration; 3D 4D modeling; mineralization; faults and shear zones; Geofysik med inriktning mot fasta jordens fysik; Geophysics with specialization in Solid Earth Physics;

    Sammanfattning : The Skellefte ore district in northern Sweden is a Palaeoproterozoic volcanic arc and one of the most important ones hosting volcanogenic massive sulfide (VMS) deposits, producing mainly base metals and orogenic gold deposits. Due to high metal prices and increased difficulties in finding shallow deposits, the exploration for and exploitation of mineral resources is quickly being moved to greater depths. LÄS MER