Sökning: "kaolinite"

Visar resultat 6 - 10 av 26 avhandlingar innehållade ordet kaolinite.

  1. 6. Diagenesis and Sequence Stratigraphy : an integrated approach to constrain evolution of reservoir quality in sandstones

    Författare :João Marcelo Ketzer; Karl Ramseyer; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Geovetenskap; Earth sciences; Geovetenskap; mineralogi; petrologi och tektonik; Mineral Chemistry; Petrology and Tectonics;

    Sammanfattning : Diagenesis and sequence stratigraphy have been formally treated as two separate disciplines in sedimentary petrology. This thesis demonstrates that synergy between these two subjects can be used to constrain evolution of reservoir quality in sandstones. LÄS MER

  2. 7. Diagenesis and Sequence Stratigraphy : Predictive Models for Reservoir Quality Evolution of Fluvial and Glaciogenic and Non-glaciogenic, Paralic Deposits

    Författare :Mohamed Kalefa; Sadoon Morad; Alessandro Amorosi; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Siliciclastic diagenesis; Sequence stratigraphy; Glacial and non-glacial; Fluvial; Paralic and shallow marine; Geovetenskap; Earth sciences; Geovetenskap;

    Sammanfattning : Development of a predictive model for the distribution of diagenetic alterations and related evolution of reservoir quality of sandstones was achieved by integrating the knowledge of diagenesis to sequence stratigraphy. This approach allows a better elucidation of the distribution of eogenetic alterations within sequence stratigraphy, because changes in the relative sea level induce changes to: (i) pore water chemistry, (ii) residence time of sediments under certain near-surface geochemical conditions, (iii) variations in the detrital composition, and (iv) amounts and type of organic matter. LÄS MER

  3. 8. Geological, geochemical and mineralogical characterization of non-metallic mineral deposits in the La Paz region, Bolivia

    Författare :Ariana Zeballos; Christina Wanhainen; Pär Weihed; Olav Eklund; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Malmgeologi; Ore Geology;

    Sammanfattning : Industrial mineral resources are a promising source of economic development in Bolivia where the mining industry’s main focus is on metalliferous deposits. The industrial mineral resources in Bolivia are of large quantity, even though they remain only locally known, as well as understudied to a large degree. LÄS MER

  4. 9. Quantum chemical calculations of multidimensional dynamics probed in resonant inelastic X-ray scattering

    Författare :Emelie Ertan; Michael Odelius; Åsa Larson; Oriol Vendrell; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; quantum chemistry; X-ray spectroscopy; RASSCF; density functional theory; ultrafast nuclear dynamics; kemisk fysik; Chemical Physics;

    Sammanfattning : This thesis is devoted to the theoretical study of the dynamical processes induced by light-matter interactions in molecules and molecular systems. To this end, the multidimensional nuclear dynamics probed in resonant inelastic X-ray scattering (RIXS) of small molecules, exemplified by H2O (g) and H2S (g), as well as more complex molecular systems, exemplified by NH3 (aq) and kaolinite clay, are modelled. LÄS MER

  5. 10. Ab initio simulations of vibrational and electronic structure evaluated against K-edge resonant inelastic X-ray scattering

    Författare :Emelie Ertan; Michael Odelius; Laurent Duda; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; resonant inelastic X-ray scattering; hydrogen bonding; ultra fast dynamics; density functional theory; multi-configurational calculations; kemisk fysik; Chemical Physics;

    Sammanfattning : The work of this thesis is focused on investigation of electronic and molecular structure and dynamics a molecular species in solutions and minerals in relation to resonant inelastic X-ray scattering (RIXS). The studies have been carried out by means of quantum chemistry calculations using density functional theory (DFT) and multi-configurational methods and quantum dynamics simulations using wave packet dynamics and ab initio molecular dynamics. LÄS MER