Sökning: "Aragonite"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet Aragonite.

  1. 1. Understanding Physical Reality via Virtual Experiments

    Författare :Sergiu Arapan; Rajeev Ahuja; Börje Johansson; Chris Pickard; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; density functional theory; ab initio calculations; electronic structure; lattice dynamics; high-pressure phase transitions; high-temperature phase transitions; incommensurate structures; Condensed matter physics; Kondenserade materiens fysik;

    Sammanfattning : In this thesis I have studied some problems of condensed matter at high pressures and temperatures by means of numerical simulations based on Density Functional Theory (DFT).The stability of MgCO3 and CaCO3 carbonates at the Earth's mantle conditions may play an important role in the global carbon cycle through the subduction of the oceanic crust. LÄS MER

  3. 2. Genome sequencing. Analysis of pathogenicity factors in hereditary and bacterial diseases

    Författare :Joakim Westberg; KTH; []
    Nyckelord :genome sequencing; DNA sequencing; dye-terminator; solid-phase; de novo mutation detection; Mycoplasma mycoides subsp. mycoides SC; mycoplasma; CBPP; properdin; insertion sequence; ISMmy1;

    Sammanfattning : With a metal removal process based on precipitation aimed atthe purification of pulping effluent as a starting point, theinfluence of carboxylic acids on calcium carbonateprecipitation has been studied. The chosen carboxylic acids canact as more or less strong complexing agents for aqueouscalcium, just as many compounds found in pulping liquors. LÄS MER

  4. 3. Calcium Carbonate Precipitation in Presence of Carboxylic Acids

    Författare :Karl-Johan Westin; KTH; []
    Nyckelord :calcium carbonate; precipitation; crystallization; carboxylic acids;

    Sammanfattning : With a metal removal process based on precipitation aimed atthe purification of pulping effluent as a starting point, theinfluence of carboxylic acids on calcium carbonateprecipitation has been studied. The chosen carboxylic acids canact as more or less strong complexing agents for aqueouscalcium, just as many compounds found in pulping liquors. LÄS MER

  5. 4. The influence of particle shape of coating pigments on their packing ability and on the flow properties of coating colours

    Författare :Sven Lohmander; KTH; []
    Nyckelord :aspect ratio; capillary viscometry; coating colour; filtration. Particle packing;

    Sammanfattning : The influence of particle shape of coating pigments on theirpacking ability and on the flow properties of coating colourshas been investigated. The particle shapes considered werespherical, flaky and acicular (needle-shaped). LÄS MER

  7. 5. Fossilized microorganisms in volcanic rocks from sub-seafloor environments

    Författare :Magnus Ivarsson; Nils Holm; Sten Lindblom; Curt Broman; Harald Furnes; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Microfossils; hydrothermal systems; deep biosphere; Other earth sciences; Övrig geovetenskap; Mineralogy; Petrology and Geochemistry; mineralogi; petrologi och geokemi;

    Sammanfattning : Fossilized microorganisms are focused in this thesis. Such organisms have been observed in drilled basalt samples from the Emperor Seamounts in the Pacific Ocean collected during ODP (Ocean Drilling Program) Leg 197. LÄS MER