Sökning: "MINERALIZATION"

Visar resultat 1 - 5 av 73 avhandlingar innehållade ordet MINERALIZATION.

  1. 1. 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

  2. 2. 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

  3. 3. 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

  4. 4. 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

  5. 5. Osteogenesis Imperfecta Genetic and Therapeutic Studies

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Katarina Lindahl; Uppsala universitet.; [2013]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; OI; BMD; Genotype; Phenotype; Pharmaco-genetics; Bisphosphonate; Therapy; Gene-therapy; Mutation; Collagen; Collagen type I; Allele-specific silencing; siRNA; RNAi; COL1A1; COL1A2; Stroke; C-propeptide; Mineralization; Heterozygous disadvantage; Genetics; Genetik; Medicin; Medicine; Medicinsk genetik; Medical Genetics;

    Sammanfattning : Osteogenesis imperfecta (OI) is a heterogeneous disease of connective tissue, the cardinal symptom being fractures and severity ranging from mild to lethal. Dominant mutations in collagen I, encoded by COL1A1 and COL1A2, cause >90% of cases. LÄS MER