Search for dissertations about: "CHEMICAL-COMPOSITION"

Showing result 1 - 5 of 313 swedish dissertations containing the word CHEMICAL-COMPOSITION.

  1. 1. The high Arctic summer aerosol Size, chemical composition, morphology and evolution over the pack-ice

    University dissertation from Stockholm : Department of Meteorology, Stockholm University

    Author : Evelyne Hamacher-Barth; Stockholms universitet.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic; aerosol; marine gel; electron microscopy; EDX-spectroscopy; chemical composition; morphology; size distribution; atmosfärvetenskap och oceanografi; Atmospheric Sciences and Oceanography;

    Abstract : Aerosol particles, especially in the high Arctic are still not very well represented in climate models. Particle size and number concentrations are strongly under-predicted and temporal variations of aerosol composition and size are still not very well understood, mainly due to the sparsity of observations. READ MORE

  2. 2. Ferriferous and phosphatic ooids from the lower Palaeozoic of Sweden : chemical composition, mineralogy and ultra-structures

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ulf Sturesson; Uppsala universitet.; [1988]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  3. 3. On the Chemical Composition of Metal-Poor Stars Impact of Stellar Granulation and Departures from Local Thermodynamic Equilibrium on the Formation of Spectral Lines

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Remo Collet; Uppsala universitet.; [2006]
    Keywords : Astronomy; late-type stars; stellar abundances; stellar atmospheres; spectral line formation; convection; hydrodynamics; Galactic chemical evolution; Astronomi;

    Abstract : The information about the chemical compositions of stars is encoded in their spectra. Accurate determinations of these compositions are crucial for our understanding of stellar nucleosynthesis and Galactic chemical evolution. READ MORE

  4. 4. Adsorption and bonding on platinum influence of the surface structure and chemical composition

    University dissertation from Stockholm : Fysik

    Author : Emmanuelle Janin; KTH.; [2000]
    Keywords : Platinum; tin; low index single crystal surfaces; adsorption;

    Abstract : This thesis deals with the influence of the structure andchemical composition of platinum surfaces on the adsorption ofsome molecules. Three main lines can be distinguished : 1) thecharacterisation of clean/modified surfaces, 2) the adsorptionof some simple atoms and molecules on these surfaces andfinally 3) the adsorption of 2-butenal, a bi-functionalmolecule containing a C=C group conjugated with a C=O group. READ MORE

  5. 5. Photosensitivity, chemical composition gratings and optical fiber based components

    University dissertation from Stockholm : KTH

    Author : Michael Fokine; KTH.; [2002]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optical fibers; fiber bragg gratings; photosensitivity; thermal stability; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : The different topics of this thesis include high-temperaturestable fiber Bragg gratings, photosensitivity and fiber basedcomponents.Fiber Bragg gratings (FBG) are wavelength dispersiverefractive index structures manufactured through UV exposure ofoptical fibers. READ MORE