Sökning: "Sandra Jönsson"

Hittade 3 avhandlingar innehållade orden Sandra Jönsson.

  1. 1. Industrial applications and properties of oxalate-degrading enzymes

    Författare :Sandra Winestrand; Leif J. Jönsson; Thomas Nilsson; Nils-Olof Nilvebrant; Gudmundur O. Hreggvidsson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oxalic acid; oxalate oxidase; oxalate decarboxylase; calcium oxalate; scaling; active packaging; Kemi; Chemistry;

    Sammanfattning : Oxalate-degrading enzymes were investigated with focus on potential applications in the pulp and paper industry and in active packaging. Changes introduced to make the pulp and paper industry more environmentally friendly, such as recirculation of process-water streams and elementary chlorine free bleaching of pulp, have led to increasing problems with precipitation of calcium oxalate. LÄS MER

  3. 2. Pretreatment and enzymatic saccharification of lignocellulose : formation and effects of pseudolignin

    Författare :Monica Normark; Leif Jönsson; Sandra Winestrand; Torbjörn Lestander; Wilfred Vermerris; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pretreatment; enzymatic saccharification; ionic liquid; torrefaction; pseudolignin; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Production of advanced biofuels, green chemicals, and bio-based materials from renewable lignocellulosic biomass would contribute to decreased dependence on fossil resources and to sustainable development. The overall aim of the investigations was to explore how preprocessing and pretreatment technologies affected the chemical composition of cellulosic materials and their susceptibility to enzymatic saccharification, which is one of the major routes for biorefining of lignocellulose. LÄS MER

  4. 3. Kraften att älska, makten att tjäna : religion, emancipation och den kvinnliga skapande kraften i Jeanna Oterdahls sagor 1908–1927

    Författare :Sun-Kyoung Choi; Maria Jönsson; Anders Johansson; Eva Heggestad; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Fairy tale; religion; Lutheran doctrine of vocation; liberal theology; women’s emancipation movement; Fredrika Bremer Association [Fredrika-Bremer-förbundet]; Christian love; power; freedom; female creativity; women’s calling vocation; female identity; Jeanna Oterdahl; Fredrika Bremer; Emilia Fogelklou; Anna Sandström; Sophie Adlersparre; anxiety of authorship; Sandra M. Gilbert; Susan D. Gubar; artistry of women writers; gender studies; genusvetenskap; Literature; litteraturvetenskap; barn- och ungdomslitteratur; literature for children and adolescents;

    Sammanfattning : This dissertation studies the Swedish author Jeanna Oterdahl (1879–1965), and the fairy tales and stories she wrote in the period 1908–1927. Oterdahl was a well-known Christian public intellectual in her day. LÄS MER