Sökning: "dissolution"

Visar resultat 16 - 20 av 491 avhandlingar innehållade ordet dissolution.

  1. 16. Dissolution of Polydisperse Polymers in Water

    Författare :Anna Körner; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysikalisk kemi; Physical chemistry; PEO; swelling; polymer dissolution; polydispersity;

    Sammanfattning : The different steps in the dissolution process of polydisperse polymers in water have been studied. To that end, poly(ethylene oxide), dextran and hydroxypropyl methylcellulose tablets varying widely in polydispersity have been produced by mixing low molecular weight and high molecular weight samples in different proportions. LÄS MER

  3. 17. Union-Fertility Nexus and Fertility Variation in Sub-Saharan Africa : The Role of Marital Dissolution and Repartnering

    Författare :Ben Malinga John; Elizabeth Thomson; Gunnar Andersson; Natalie Nitsche; Myrskyla Mikko; Monica Grant; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; fertility; fertility transition; marriage; marriage formation; marital dissolution; repartnering; Sub-Saharan Africa; demographic methods; sociologisk demografi; Sociological Demography;

    Sammanfattning : The role of marital dissolution and repartnering in shaping fertility patterns in sub-Saharan Africa (SSA) has been largely overlooked, even though marital dissolution and repartnering are fundamental features of marriage dynamics in this region. This dissertation addresses this gap by using existing statistical and demographic techniques and developing new demographic methods to (i) examine the relationship between union dissolution and fertility at the micro level (Study I); (ii) assess the dynamics of union dissolution, including the levels of all-cause first union dissolution, the timing of first union dissolution, and the reproductive years spent outside of marriage due to union dissolution (Studies II & III); and (iii) analyze the influence of marital dissolution and repartnering on macro fertility patterns in SSA (Study IV). LÄS MER

  4. 18. Cellulose Dissolution and Amphiphilicity : Insights on the Emulsion Formation and Stabilization

    Författare :Carolina Costa; Magnus Norgren; Håkan Edlund; Orlando Rojas; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : An amphiphilic polymer is expected to adsorb at the oil-water interface and be capable of stabilizing emulsions. Cellulose derivatives, cellulose nanoparticles and regenerated cellulose particles show an intrinsic amphiphilic character by self-assembling at oil-water interfaces and stabilizing emulsions without the aid of surfactants or any other co-stabilizers. LÄS MER

  5. 19. Carbohydrate degradation and dissolution

    Författare :Dan Johansson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Engineering; Kemiteknik;

    Sammanfattning : .... LÄS MER

  7. 20. Characterization and Dissolution of HEV NiMH Batteries

    Författare :Kristian Larsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Materials Recycling; Nickel tetracarbonyl; Selective dissolution; Nickel metal hydride; Characterization; Mond; Batteries;

    Sammanfattning : The recycling of batteries is an important issue in a sustainable society where materials recycling of complex products is a necessity. Without an efficient recycling there will be an unnecessary loss of both materials and energy due to inefficient or non-existent recycling. LÄS MER