Search for dissertations about: "characterisation"

Showing result 21 - 25 of 1068 swedish dissertations containing the word characterisation.

  2. 21. Voltage Sags: Single event characterisation, system performance and source location

    Author : Roberto Chouhy Leborgne; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; source location; characterisation; voltage sags dips ; Power quality; indices;

    Abstract : This thesis deals with one of the most important disturbances that affect the quality of the electrical supply. Voltage sags cause industrial processes malfunction, producing an enormous economical impact. A voltage sag is defined as a short duration reduction of the rms voltage. READ MORE

  4. 22. Operando Characterisation of Lithium–Sulfur Batteries

    Author : Yu-Chuan Chien; Daniel Brandell; Matthew Lacey; Paul Shearing; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lithium–sulfur batteries; operando characterisation; intermittent current interruption; X-ray diffraction; small-angle scattering; electrochemical impedance spectroscopy; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Abstract : Lithium–sulfur (Li–S) batteries have been under the spotlight of research on electrochemical energy storage systems, primarily owing to their high theoretical specific energy (2552 Wh kg-1). So far, Li–S cells on the market have presented a specific energy of 400 Wh kg-1, which is superior to many commercial alternatives, but far below the theoretical value. READ MORE

  5. 23. Voltage sags characterisation and estimation

    Author : Roberto Chouhy Leborgne; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sag estimation.; Power quality; voltage sags dips ; sag characterisation;

    Abstract : .... READ MORE

  6. 24. Enzyme Hydrolysis of Cellulose Derivatives. Active Site Studies and Polymer Characterisation

    Author : Herje Schagerlöf; Biokemi och Strukturbiologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry; Humicola insolens; Trichoderma reesei; Bacillus agaradhaerens; Mass spectrometry; Substituent distribution; Characterisation; Endoglucanases; Cellulose derivatives;

    Abstract : Soluble derivatives of cellulose have become increasingly important in industrial products e.g. in pharmaceutical applications and in technical dispersions. The polymer characteristics of modified celluloses are to a high degree determined by the substituent distribution along the polymeric backbone. READ MORE

  7. 25. Tailoring and Characterisation of Nickel Silicide Thin Films on Silicon Carbide

    Author : S. A. Perez-Garcia; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thin films; silicon carbide; nickel silicide; characterisation;

    Abstract : .... READ MORE