Sökning: "Relative permeability"

Visar resultat 1 - 5 av 58 avhandlingar innehållade orden Relative permeability.

  1. 1. Skin hydration - How water and osmolytes influence biophysical properties of stratum corneum

    Författare :Sebastian Björklund; Fysikalisk kemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Stratum corneum; diffusive transport; permeability; flow-through cell; Franz cell; transdermal drug delivery; water activity; vapor pressure; osmotic gradient; relative humidity; ceramide; free fatty acid; cholesterol; keratin filaments; natural moisturizing factor NMF ; urea; glycerol; molecular mobility; 13C natural-abundance solid-state NMR; polarization transfer; isothermal calorimetry; impedance spectroscopy; X-ray diffraction;

    Sammanfattning : The outermost layer of skin (i.e., the stratum corneum, SC) is the interface that separates the water-rich inside of the body from the relatively dry external environment. SC forms an effective permeability barrier, which has to be overcome in transdermal drug delivery. LÄS MER

  3. 2. Moisture permeability of mature concrete, cement mortar and cement paste

    Författare :Göran Hedenblad; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; moisture transport; cement paste; moisture permeability; concrete; moisture flow; cement mortar;

    Sammanfattning : Moisture permeability tests were performed on specimens of concrete, cement mortar and cement paste with the bottom side in water or in moist air and the upper side in a relative humidity of 33 %. The distribution of the relative humidity within the specimen was measured, at stationary conditions, as well as the amount of water which pass through the specimen. LÄS MER

  4. 3. Influence of Composition and Pore Geometry on Immiscible Fluid Flow through Greensands: Development of Neutron Transmission Methods and Image Analysis

    Författare :Mikael Solymar; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pore geometry; image analysis; fluid flow; petrography; greensand; porosity; glauconite; permeability; neutron transmission methods; fluid saturation;

    Sammanfattning : The effect of the mineralogical composition and pore geometry of sediments on the distribution as well as the flow of immiscible fluids are of importance when evaluating petroleum reservoirs. Greensand containing the clay mineral glauconite is a complex reservoir rock type. LÄS MER

  5. 4. Vascular mechanisms in ovulation

    Författare :Kenrokuro Mitsube; Göteborgs universitet; []
    Nyckelord :angiotensin; blood flow; nitric oxide; ovary; ovulation; permeability; permselectivity; rat.;

    Sammanfattning : Ovulation is a unique biological process, which involves the degradation and rupture of healthy tissue of the ovarian follicle and the extrusion of the oocyte. This process is initiated by the preovulatory surge of luteinizing hormone (LH), which leads to the up-regulation of various intraovarian mediators. LÄS MER

  7. 5. Para-espaces dans le th��tre fran�ais de la p�riode romantique (1828-1835)

    Författare :Nicolas Manuguerra; Christina Kullberg; Edward Nye; Tim Farrant; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; French literature; theatre; theatre studies; 19th century; drama; romantic drama; romanticism; space; spatiotemporality; para-espaces; threshold; permeability; transition; mediation; stage; offstage; windows; doors; staircase; stairs; balcony; Littérature française; théâtre; dix-neuvième siècle; romantisme; drame; drame romantique; espace; seuil; spatiotemporalité; para-espaces; passage; médiation; transition; frontière; limite; perméabilité; contaminations; scène; hors-scène; teichoscopie; portes; fenêtres; balcons; escaliers; Victor Hugo; Alexandre Dumas; Eugène Scribe; Casimir Delavigne; Jacques Ancelot; René-Charles Guilbert de Pixerécourt; Auguste Anicet-Bourgeois; Frédéric Soulié; Alfred de Vigny; Alfred de Musset; Victor Ducange; Felix Pyat; Auguste Luchet.; Literature; Litteraturvetenskap; Romance Languages; Romanska språk;

    Sammanfattning : This thesis deals with the functions of prevalent threshold-like spaces such as windows, stairs, doors or balconies in theatre plays from the height of the Romantic era in France (1828-1835). The study coins the concept of « para-espaces » (para-spaces) and elucidates the way they mediate between different divisions of the spatiotemporal structure of a play. LÄS MER