Sökning: "hydration"

Visar resultat 1 - 5 av 192 avhandlingar innehållade ordet hydration.

  1. 1. Early Hydration of Portland Cement

    Författare :Rikard Ylmén; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SEM; freeze-drying; cement; calorimetry; nano-silica; carbonation; hydration; FTIR; infrared spectroscopy;

    Sammanfattning : The production of cement is responsible forapproximately 7 % of the total CO2 emissions caused by man. To compensate for high energyconsumption and CO2 emission, thus making the utilization of concrete more sustainable,several strategies can be used. LÄS MER

  2. 2. Portland Cement Clinker - Composition and Hydration

    Detta är en avhandling från Material Chemistry, P.O. Box 124, SE-221 00 Lund

    Författare :Anna Emanuelson; Lund University.; Lunds universitet.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; mineralisation; hydration; polymorphism; substitutions; ferrite; aluminate; belite; alite; Portland cement clinker; phase analysis; Oorganisk kemi; Material technology; Materiallära; materialteknik;

    Sammanfattning : The crystal structures of the main Portland cement clinker phases are reviewed and two anion centered models of Ca3SiO5 and Ca2SiO4 are presented. The effects of minor elements on the clinkering process, and on the qualitative and quantitative phase compositions of Portland cement clinker are discussed. LÄS MER

  3. 3. Concentrated DNA-amphiphiles Structure, Hydration, and Dynamics

    Detta är en avhandling från Physical Chemistry 1, Lund University

    Författare :Cecilia Leal; Lund University.; Lunds universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amphiphiles; DNA; Physical chemistry; diffusion NMR; solid-state NMR; electrostatics; dynamics; local order; Fysikalisk kemi; hydration;

    Sammanfattning : The structure, hydration, and dynamics of concentrated DNA-amphiphile complexes were investigated by small-angle X-ray diffraction, sorption calorimetry, and nuclear magnetic resonance. A concentrated, electroneutral, DNA-amphiphile complex can be formed by mixing charge-stoichiometric solutions. LÄS MER

  4. 4. Effect of hydration on thermodynamic, rheological and structural properties of mucin

    Detta är en avhandling från Malmö University, Faculty of Health and Society

    Författare :Yana Znamenskaya; Malmö University.; Malmö University.; [2013]
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP; PHARMACY; FARMACI; Technology; mucous gel; mucus; mucin; PGM; BSM; BSM chitosan multilayers; hydration; water sorption isotherm; relative humidity; water activity; bound water; enthalpy of hydration of biopolymer; glass transition; rheology; phase diagram; fiber-like structure; dumbbell-like structure; sorption calorimetry; DSC; QCM-D; SAXS; AFM;

    Sammanfattning : Mucus, an adherent hydrated layer covering the epithelium, is found in all internal tracts of the body and plays an important role in animal and human life. One of the essential functions of mucus is protection of tissues against dehydration. LÄS MER

  5. 5. Humectants and skin : effects of hydration from molecule to man

    Detta är en avhandling från Malmö University

    Författare :Cathrine Albèr; Malmö University.; Malmö University.; [2015]
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Sciences; skin; stratum corneum; hydration; hyaluronan; glycerol; urea;

    Sammanfattning : Humectants belong to a group of hydrophilic compounds frequently used in skin care products with the aim to diminish the clinical symptom of skin dryness. The biochemical and biophysical mechanisms by which humectants interact with the skin barrier are far from fully understood. LÄS MER