Sökning: "hydration"

Visar resultat 1 - 5 av 201 avhandlingar innehållade ordet hydration.

  1. 1. Portland Cement Clinker - Composition and Hydration

    Författare :Anna Emanuelson; Centrum för analys och syntes; []
    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

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

    Författare :Cathrine Albèr; Malmö högskola; []
    Nyckelord :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

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

    Författare :Cecilia Leal; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; 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

    Författare :Yana Znamenskaya; Malmö högskola; []
    Nyckelord :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. Kidney Hyaluronan : Regulatory Aspects During Different States of Body Hydration, Nephrogenesis & Diabetes

    Författare :Louise Rügheimer; Peter Hansell; Cecilia Johnsson; Örjan Källskog; Mats Rundgren; Uppsala universitet; []
    Nyckelord :Physiology; hyaluronan; kidney; dehydration; hydration; diabetes; nephrogenesis; renomedullary interstitial cells; CD44; hyaluronan synthase; hyaluronidase; vasopressin; nitric oxide; prostaglandins; glucocorticoids; angiotensin II; diuresis; lymph vessel; podoplanin; Fysiologi;

    Sammanfattning : The kidney regulates the excretion of water and electrolytes, which maintains homeostasis and enables control of arterial blood pressure. Hyaluronan, a large negatively charged interstitial glucosaminoglycan, is heterogeneously distributed within the kidney, primarily found in the medulla. LÄS MER