Sökning: "Interfacial energy"

Visar resultat 16 - 20 av 158 avhandlingar innehållade orden Interfacial energy.

  1. 16. Influence of fluid shear on primary nucleation of low molecular organic compounds in solution

    Författare :Jin Liu; Åke Rasmuson; Mårten Behm; Ulf Gedde; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Agitation; Primary nucleation; Induction time; Fluid shear; Energy input; Mass transfer; Molecular alignment; Butyl paraben; Curcumin; m-Hydroxybenzoic acid; Solid-liquid interfacial energy; Nuclei critical radius;

    Sammanfattning : In this project, two experimental systems have been set up to study the influence of fluid shear on primary nucleation. In the first set of experiments, in total about 3000 nucleation experiments have been done with butyl paraben/ethanol solutions, curcumin/ethanol solutions and m-hydroxybenzoic acid/1-propanol solutions in capped vials agitated with magnetic stir bars. LÄS MER

  3. 17. Aspects of oral implant technology and osseointegration

    Författare :Rainde Naiara Rezende de Jesus; Malmö universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biomaterials; oral implants; surface topography; surface roughness; surface energy; surface wettability; hydrophilicity; macrogeometry; implant body; thread design; surgical protocol; oversized drilling; osseointegration; bone-to-implant contact; bone density; primary implant stability; insertion torque; removal torque; removal energy; connection stiffness; osteoclasts; RAW264.7 cells; gene expression;

    Sammanfattning : Behandling med käkbensförankrade tandimplantat är en vanlig metod för att ersätta förlorade tänder hos helt och partiellt tandlösa patienter. Trots att implantatbehandling uppvisar en långsiktigt hög lyckande- och överlevnadsfrekvens (90–95% efter 10 år) så förekommer implantatförluster och marginal benförlust kring implantaten under det första året efter insättning och/eller belastning, vilket kan försämra det estetiska resultatet. LÄS MER

  4. 18. Functional composite coatings containing conducting polymers

    Författare :Shadi Jafarzadeh; Per Martin Claesson; Arjan Mol; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Conducting polymer; Polyaniline; Conductive network; Nanocomposite; Active corrosion protection; Interfacial energy; UV curing; Kemi; Chemistry;

    Sammanfattning : Organic coatings are widely used to lower the corrosion rate of metallic structures. However, penetration of water, oxygen and corrosive ions through pores present in the coating results in corrosion initiation and propagation once these species reach the metal substrate. LÄS MER

  5. 19. Dynamic interactions of interfacial polymers

    Författare :Mark Plunkett; KTH; []
    Nyckelord :surface chemistry dynamic polymer interactions QCM AFM MASIF surface forces adhesion friction;

    Sammanfattning : The relationship between the amount and conformation of apolymer at the solid-liquid interface, and the resultinginteraction forces between two such surfaces has beeninvestigated. With a degree of control of the polymerconformation, by varying the temperature, solvent quality,polymer charge density etc, it has been possible to measure andinterpret the resulting changes in the surface interactions. LÄS MER

  7. 20. Crystallization of Vanillin : Influence of Additives on Primary Nucleation

    Författare :Osvaldo Pino Garcia; KTH; []
    Nyckelord :crystallization; nucleation; induction period; interfacial energy; molecular modelling; vanillin; additives;

    Sammanfattning : .... LÄS MER