Search for dissertations about: "Multicomponent diffusion"

Showing result 1 - 5 of 31 swedish dissertations containing the words Multicomponent diffusion.

  2. 1. Mass transfer during isothermal drying of a porous solid containing multicomponent liquid mixtures

    Author : Rafael Gamero; KTH; []
    Keywords : internal mass transfer; capillary flow; multicomponent; diffusion; solvent mixtures;

    Abstract : Mass transfer in a porous solid, partially saturated with asingle solvent and multicomponent liquid mixtures, has beenexperimentally and theoretically studied. A porous materialcontaining single liquids and mixtures of organic solvents wasisothermally dried. READ MORE

  4. 2. NMR diffusion studies on lyotropic liquid crystalline systems

    Author : Greger Orädd; Frank Volke; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Diffusion; pulsed field gradient; liquid crystalline systems; lipid lateral diffusion; cubic phases; peptide-lipid interactions; hydrophobic mismatch; permeability;

    Abstract : The pulsed field gradient fourier transform nuclear magnetic resonance (PFG-FTNMR) method to measure translational diffusion coefficients in multicomponent systems has been applied to amphiphilic molecules forming liquid crystalline phases.By analyzing the concentration dependence of the diffusion coefficients of water and amphiphile in a micellar system of N,N-dimethyldodecy lamine oxide (DDAO) in water it was possible to conclude that the micelles formed were polydisperse in size and shape. READ MORE

  5. 3. Diffusion in Multiphase and Multicomponent Alloys with Applications to Austenitic Stainless Steels

    Author : Martin Schwind; KTH; []
    Keywords : Austenitic Stainless Steel; Diffusion; Ostwald Ripening; Random Walk;

    Abstract : .... READ MORE

  6. 4. Transport Coefficients during Drying of Solids containing Multicomponent Mixtures

    Author : Rafael Gamero; Joaquín Martínez; Evangelos Tsotsas; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; capillary; conduction; convection; diffusion; evaporation; heat transfer; hydraulic conductivity; liquid film; liquid transport; mass transfer; Maxwell-Stefan diffusion coefficients; molar fluxes; phase equilibrium; temperature gradient; ternary mixture; thermodynamic factors; Chemical engineering; Kemiteknik;

    Abstract : This study investigated the transport coefficients involved in mass and heat transfer during the drying of a porous solid partially saturated with multicomponent mixtures.  It included the coefficients governing liquid transport through the solid, the matrix of multicomponent diffusion coefficients in the liquid phase, and the effective thermal conductivity. READ MORE

  7. 5. A Theoretical Study of Piezoelectricity, Phase Stability, and Surface Diffusion in Disordered Multicomponent Nitrides

    Author : Christopher Tholander; Björn Alling; Ferenc Tasnádi; Lars Hultman; Susanne Mirbt; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Piezoelectricity; phase stability; surface diffusion; disordered multicomponent nitrides;

    Abstract : Disordered multicomponent nitride thin film can be used for various applications. The focus of this Licentiate Thesis lies on the theoretical study of piezoelectric properties, phase stability and surface diffusion in multifunctional hard coating nitrides using density functional theory (DFT). READ MORE