Search for dissertations about: "dissolution"

Showing result 21 - 25 of 464 swedish dissertations containing the word dissolution.

  2. 21. Chlorite: Geochemical properties, Dissolution kinetcis and Ni(II) sorption

    Author : Åsa Zazzi; Zoltan Szabo; Susanna Wold; Peter Vilks; KTH; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chlorite; dissolution kinetics; Ni II sorption; surface complexation; Chemistry; Kemi;

    Abstract : In Sweden, among other countries, a deep multi-barrier geological repository, KBS-3, is planned for the burial of nuclear waste. One of the barriers is identified as the grantic bedrock itself and in this environment chlorite is present at surfaces in fracture zones. READ MORE

  4. 22. On initiation of chemically assisted crack growth and crack propagation paths of branching cracks in polycarbonate

    Author : Ulf Hejman; Malmö högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; stress corrosion; crack initiation; multiple cracking; polycarbonate; three point bending; stress corrosion cracking; polycarbonate; dissolution; branching; experiment; finite element modelling; stress corrosion; crack initiation; multiple cracking; polycarbonate; three point bending; branching.;

    Abstract : Stress corrosion, SC, in some cases gives rise to stress corrosion cracking, SCC, which differs from purely stress intensity driven cracks in many aspects. They initiate and grow under the influence of an aggressive environment in a stressed substrate. They grow at low load and may branch. READ MORE

  5. 23. The Challenges of Analyzing the Molecular Properties of Starch

    Author : Daysi Pérez; Livsmedelsteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Amaranthus caudatus; Chenopodium quinoa; Chenopodium pallidicaule; Canna indica; Lepidium meyenii; Xanthosoma sagittifolium; Manihot esculenta; starch; amylose; amylopectin; field-flow fractionation; size distribution; dissolution;

    Abstract : Both the nutritional and functional properties of starch are directly influenced by the molecular structure of its polymers: amylose and amylopectin. It is therefore important to have reproducible methods for quantifying the molecular size. READ MORE

  6. 24. Investigation of CO2 interactions with cellulose dissolved in the NaOH(aq) system

    Author : Maria Gunnarsson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; DBU; ATR-IR spectroscopy; NaOH aq ; dissolution; NMR spectroscopy; CO2; cellulose;

    Abstract : Cellulose derived from wood can be used as raw material for production of textile fibres, making it a renewable alternative to fossil oil. One of the key steps in this process is dissolution of the cellulose. READ MORE

  7. 25. Cellulose in quaternary ammonium hydroxide solutions

    Author : Shirin Naserifar; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; quaternary ammonium hydroxides; cellulose; N; N-dimethylmorpholinium hydroxide; Triton B; NaOH; dissolution; TMAH; etherification;

    Abstract : An ever-increasing demand to shift away from fossil-based feedstock towards renewable resources has led to more use of bio-based materials. Cellulose being the most abundant biopolymer on Earth has received a considerable attention with a wide range of applications (in textile fibers, films, membranes, etc. READ MORE