Sökning: "gel layer"

Visar resultat 21 - 25 av 64 avhandlingar innehållade orden gel layer.

  1. 21. Towards more selective sorbents for extraction of drugs and biomarkers from biological fluids using molecularly imprinted polymers

    Författare :Mohammad Mahdi Moein; Mohamed Abdel-Rehim; Milton L. Lee; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecularly imprinted polymer; sol-gel; solid phase extraction; microextraction by packed sorbent; monolithic column; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Sample preparation has a critical role as a first step in analytical processes, especially in bioanalysis and environmental analysis. A good sample preparation technique should be robust and stable, regardless of the sample matrix. LÄS MER

  3. 22. Evaluation of UHT milk processed by direct steam injection and steam infusion technology

    Författare :Bozena Malmgren; Livsmedelsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sedimentation; gel formation; microstructure; TEM transmission electron microscopy; immunogold labelling; heat effects; Technological sciences; Teknik; Food and drink technology; Livsmedelsteknik; proteolysis; steam infusion; UHT milk; steam injection;

    Sammanfattning : UHT direct steam injection and steam infusion are widely used; however there is no comparison of their impact on milk components. This study evaluates the structural changes at different steps during the UHT processing of whole milk in a full-scale UHT plant by transmission electron microscopy (TEM) and particle size measurements, and follows the enzymatic activity. LÄS MER

  4. 23. In vitro and in vivo studies of salivary films at solid/liquid interfaces

    Författare :Ida Svendsen; Malmö högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; saliva; proteins; adsorption; ellipsometry; gel electrophoresis;

    Sammanfattning : A conditioning film, the pellicle, of which many salivary proteins areimportant constituents, covers the surfaces present in the mouth. The pellicleforms in a selective adsorption process, and it has protective and lubricatingfunctions as well as an influence on the adherence of oral microbes thatultimately leads to the development of dental plaque. LÄS MER

  5. 24. 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

  7. 25. Physiological and morphological aspects of the glomerular barrier in health and disease. Results based on experimental studies in the rat

    Författare :Clara Hjalmarsson; Göteborgs universitet; []
    Nyckelord :glomerular permeability; isolated perfused kidney; charge; endothelial surface layer; glycocalyx; electron microscopy; orosomucoid; nephrotic syndrome; proteinuria;

    Sammanfattning : Tremendous amounts of fluid are filtered every day through the kidneys. The anastomosing capillary loops surrounded by Bowman s capsule, forming the glomerulus, function in accordance with the interplay between the hydrostatic and the colloid osmotic pressure. The result of the action of these mechanisms is the production of primary urine. LÄS MER