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Visar resultat 1 - 5 av 8 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Powder Bed Structure and Imbibition - A Study of Spray Dried Dairy Powders

    Författare :Erik Börjesson; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; powder bed structure; Imbibition; powder morphology; porous media;

    Sammanfattning : The formation of lumps during powder dissolution is undesirable in most cases. In a world where the use of dry products is increasing, incomplete powder dissolution and lump formation can for instance affect the color of a paint or the nutritional content of baby food. LÄS MER

  3. 2. Interactions between non-polar surfaces in water: Fokus on talc, pitch and surface roughness effects

    Författare :Viveca Wallqvist; Per Claesson; Janne Laine; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Talc; surface forces; capillary attraction; hydrophobic interaction; pitch control; wetting agent; dispersing agent; adsorption; imbibition; absorption; permeation; atomic force microscopy; colloidal probe; Hamaker constant; surface roughness; nanostructure.; Talk; kapillärattraktion; ytkrafter; hydrofob växelverkan; hartskontroll; vätningsmedel; dispergeringsmedel; adsorption; uppsugning; absorption; permeabilitet; atomkraftsmikroskopi; kolloidal partikel; Hamakerkonstant; ytråhet; nanostrukturerad yta.; Surface and colloid chemistry; Yt- och kolloidkemi; Physical chemistry; Fysikalisk kemi; Chemistry; Kemi;

    Sammanfattning : The aim of this thesis work was to gain understanding of the interactions between talc mineral and surfaces, liquids and chemicals relevant for industrial applications, such as pulp and paper. Talc is used in the pulp and paper industry as a filler pigment, in control of pitch (lipophilic extractives) deposits and as a coating pigment. LÄS MER

  4. 3. Spontaneous imbibition and colloidal aspects of inkjet printing

    Författare :Asaf Oko; Per M. Claesson; Agne Swerin; Douglas Bousfield; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Water-based inkjet is one of the most abundant and versatile digital printing technologies. The subject of this thesis work is processes that take place once an inkjet drop lands on the surface of a porous printing media, with focus on liquid penetration due to capillary action (spontaneous imbibition) and aggregation of ink components. LÄS MER

  5. 4. Modeling stormwater transport through unsaturated green roof substrates

    Författare :Kaj Pettersson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modeling; Lattice Boltzmann; porous media; CFD; saturation; multiphase; Green roofs;

    Sammanfattning : In recent decades there has been an increase in research regarding green roofs and similar technologies. This increased interest is driven by the requirements of urban development and its effects both on humans and the environment. LÄS MER

  7. 5. Changes in endogenous cytokinin-like substances in seeds during dormancy release and early germination

    Författare :Åsa Julin-Tegelman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : From studies using non-dormant seeds, Zea mays L. and Phaseotus vulgaris L. transient peaks of endogenous cytokinin-like substances were observed after only 4 h of imbibition. LÄS MER