Search for dissertations about: "electrical-conductivity"

Showing result 1 - 5 of 139 swedish dissertations containing the word electrical-conductivity.

  2. 1. Electron microscopy studies of tungsten oxides in the range WO₃ - WO₂˔₇₂ : phase relations, defect structures, structural transformations and electrical conductivity

    Author : Wubeshet Sahle; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Oorganisk kemi; Volfram;

    Abstract : The article reviews recent studies of structural variations in the W-O system in the composition range of WO3-WO2.72. Several types of defect structures have been observed in high resolution electron microscopy studies and defect models have been proposed. READ MORE

  4. 2. Water and alkali salts in the hydrating and hardened green cement-based materials: Hydration process, moisture content and transport

    Author : Liming Huang; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Formation factor; Electrical conductivity; Moisture transport; Pore structure; Sustainable cement-based materials; Hydration; Alkali salts; Supplementary cementitious materials;

    Abstract : Reducing CO2 emissions in the production of cementitious binder is the most effective way to decrease the environmental impact of the construction industry, so a large amount of supplementary cementitious materials (SCMs) has been used in the green concrete. Both the SCMs and alkali salts in binders influence the hydration process and the structure in hardened cement-based materials. READ MORE

  5. 3. Conceptualization of solute transport using time domain reflectometry. A combined laboratory and field study

    Author : Magnus Persson; Avdelningen för Teknisk vattenresurslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydrogeologi; geographical and geological engineering; Hydrogeology; electrical conductivity; Solute transport; unsaturated zone; teknisk geologi; teknisk geografi; Geophysics; physical oceanography; meteorology; Geofysik; fysisk oceanografi; meteorologi;

    Abstract : Solute transport in the unsaturated zone is a complex process. The first of the two objectives for this study was to examine how it could be conceptualized under different flow conditions. READ MORE

  6. 4. The influence of crystallinity on the properties of carbon nanotubes

    Author : Mattias Flygare; Krister Svensson; Thomas Wågberg; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; carbon nanotubes; crystallinity; electrical conductivity; transmission electron microscopy; Physics; Fysik;

    Abstract : Carbon nanotubes have been advertised as a material with quite extraordinary properties, both mechanically and electrically. The truth is that carbon nanotubes is not one material, but several different. READ MORE

  7. 5. Carbon nanotubes and graphene polymer composites for opto-electronic applications

    Author : Nicolas Boulanger; David Barbero; Christian Müller; Umeå universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon nanotubes; polythiophene; electrical conductivity; crystallography; graphene; nanoimprint lithography; synchrotron diffraction; fysik; Physics;

    Abstract : Carbon nanotubes are carbon based structures with outstanding electronical and mechanical properties. They are used in a wide range of applications, usually embedded in polymer in the form of composites, in order to affect the electronic behavior of the matrix material. READ MORE