Sökning: "size characterisation"

Visar resultat 1 - 5 av 129 avhandlingar innehållade orden size characterisation.

  1. 1. Size Characterisation of Water-Soluble Polymers Using Asymmetrical Flow Field-Flow Fractionation

    Detta är en avhandling från Div of Technical Analytical Chemistry, Center for Chemistry and Chemical Engineering

    Författare :Bengt Wittgren; [1997]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multi-angle light scattering; molar mass distribution; aggregation; size characterisation; Asymmetrical flow FFF; water-soluble polymers; polysaccharides; Chemical technology and engineering; Kemiteknik och kemisk teknologi;

    Sammanfattning : Size, as expressed by molar mass, radius of gyration or hydrodynamic radius, for example, is a fundamental parameter of polymers in solution. Thus, there is a strong need for the characterisation of both the size and shape of polymers, particularly of those utilised in various industrial applications. LÄS MER

  2. 2. InGaAs-based quantum dots for infrared imaging applications : growth and characterisation

    Detta är en avhandling från Kista Snabbtryck

    Författare :Linda Höglund; Per-Olof Holz; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : In this thesis, results are presented from the development of quantum dot (QD) based infrared photodetectors (IPs). This includes epitaxial growth of QDs, investigations of the structural, optical and electronic properties of the QD based material as well as characterisation of the resulting components. LÄS MER

  3. 3. Silicon and Quartz Microengineering Processing and Characterisation

    Detta är en avhandling från Uppsala : Fasta tillståndets elektronik

    Författare :Örjan Vallin; Peter Enoksson; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; silicon; quartz; microengineering; microstructure; MEMS; wafer bonding; direct bonding; adhesion quantification; Teknisk fysik; TECHNOLOGY Engineering physics; TEKNIKVETENSKAP Teknisk fysik;

    Sammanfattning : Microengineering has developed a broad range of production techniques to reduce size, increase throughput, and reduce cost of electrical and mechanical devices. The miniaturisation has also entailed entirely new opportunities. LÄS MER

  4. 4. Lignin polysaccharide networks in softwood and chemical pulps characterisation, structure and reactivity

    Detta är en avhandling från Stockholm : KTH

    Författare :Martin Lawoko; Göran Gellerstedt; Gösta Brunow; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering Chemical process and manufacturing engineering Cellulose and paper engineering; TEKNIKVETENSKAP Kemiteknik Kemisk process- och produktionsteknik Cellulosa- och pappersteknik;

    Sammanfattning : The chemical interactions between the main wood components i.e., cellulose, hemicelluloses and lignin are of fundamental importance for understanding the chemical aspects of wood formation and its reactivity during fibre processing e.g during chemical pulping of wood. LÄS MER

  5. 5. Mineralogical, chemical and textural properties of the Malmberget iron deposit a process mineralogically characterisation

    Detta är en avhandling från Luleå : Luleå tekniska universitet

    Författare :Cecilia Lund; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Natural sciences - Earth sciences; Naturvetenskap - Geovetenskap; Malmgeologi; Ore Geology;

    Sammanfattning : This thesis combine two different but closely connected disciplines in a mining process to each other, ore geology and process mineralogy by studying mineralogical-textural features of the ore and the ore concentrate in an apatite iron ore deposit in Malmberget, Sweden. Apatite iron ore deposits (Kiruna type) exist in a few places around the world and the two most important deposits are mined by LKAB at Kiruna and Malmberget. LÄS MER