Search for dissertations about: "vitreous silica"

Found 5 swedish dissertations containing the words vitreous silica.

  2. 1. Transport in Oxides Studied by Gas Phase Analysis

    Author : Qian Dong; Gunnar Hultquist; W.J. Quadakkers; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gas Phase Analysis; metal; oxide; platinum; vitreous silica; yttria stabilized zirconia; diatomic gas; oxidation; dissociation; permeation; uptake release.; Chemical engineering; Kemiteknik;

    Abstract : The transport in oxides is studied by the use of gas phase analysis (GPA). An experimental method to identify transported species of gases and their contribution to the overall transport of gases in oxides and an experimental method to evaluate the parameters diffusivity, concentration, permeability of gases in oxides and effective pore size in oxides are developed, respectively. READ MORE

  4. 2. Novel Chromatography Matrices for Fast Isolation of Plasmid DNA

    Author : Peter Tiainen; Tillämpad biokemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biokemisk teknik; Polymer technology; biopolymers; Polymerteknik; Biotechnology; Bioteknik; Biochemical technology; Plasmid recovery.; Composite materials; Kompositmaterial; Coating and surface treatment; Skikt och ytbehandling; Superporous agarose; Silica fibres; Plasmid purification; Anion-exchange matrices;

    Abstract : As new therapeutic areas in which genetic material is employed, i.e. gene therapy and DNA vaccination, are expanding, a substantial increase in the demand for gene vectors, e.g. READ MORE

  5. 3. Interactions between iron oxides and the additives olivine, quartzite and calcite in magnetite pellets

    Author : Pär Semberg; Abdel-Hady Abdel-Hady El-Geassy; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Abstract : In the present study, magnetite pellets with the additives olivine, calcite and quartzite were isothermally reduced in a tubular furnace to study the interaction between iron oxides and the additives. Exaggerated amounts of additives were used in order to enable analyses of phases that do not otherwise occur in sufficient amounts for X-ray diffraction and EDS-analyses. READ MORE

  6. 4. Interactions between iron oxides and the additives quartzite, calcite and olivine in magnetite-based pellets

    Author : Pär Semberg; Lawrence Hooey; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Process Metallurgy; Processmetallurgi;

    Abstract : In the present study, magnetite pellets with large amounts of the additives olivine, calcite and quartzite were isothermally reduced in a tubular furnace to study the interaction between iron oxides and the additives. A first attempt at using exaggerated amounts of additives was made in order to enable analyses of phases that do not otherwise occur in sufficient amounts for Xray diffraction and EDS-analyses. READ MORE

  7. 5. Colloidal/Solid Phase Extraction (C/S PE) Methods Based on Hydrogel Nanoparticles, Titanium dioxide microparticles and Empore Membranes Applied to Biological and Environmental Matrices

    Author : Davide Tamburro; Leopold Ilag; Robin Couch; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biomarkers; nanogels; solid-phase extraction; organophosphate esters; peptides; mass spectrometry; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Abstract : The aim of the work described in this thesis was to create and develop novel technologies in order to overcome barriers and hurdles that analytical chemistry faces focusing on sample extraction. In paper I dye containing amine groups (e.g. READ MORE