Sökning: "Particle composite"

Visar resultat 6 - 10 av 91 avhandlingar innehållade orden Particle composite.

  1. 6. Variables affecting stress development and resin conversion in light-cured dental composites

    Författare :Nazanin Emami; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement; Polymeric Composite Materials; Polymera konstruktionsmaterial;

    Sammanfattning : The general aim of this dissertation was to identify and investigate factors that can be used to minimize stress development in light cured dental resins without compromising the conversion level of the polymer. Modulus of elasticity, polymerization contraction strain, degree of conversion and shrinkage of light-cure dental composites were determined after curing with three different light power densities where total irradiated energy (J/cm2) kept constant. LÄS MER

  3. 7. Microfluidic Compartmentalization for Smart Materials, Medical Diagnostics and Cell Therapy

    Författare :Emre Iseri; Wouter van der Wijngaart; Nicole Pamme; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microfluidics; microfabrication; compartmentalization; partitioning; droplet microfluidics; self-assembly; 3D microarrays; soft composites; beads; particles; core-shell particle; point-of-care; diagnostics; dipstick; digital bioassays; lab-on-a-chip; urinary tract infection; bacteria detection; E. coli; cell encapsulation; hydrogel; cell therapy; spider silk; magnetic metamaterials.; Mikrofluidik; mikrotillverkning; kompartmentalisering; partitionering; droppmikrofluidik; självmontering; 3D-mikromatriser; mjuka kompositer; pärlor; partiklar; kärna-skalpartikel; vårdpunkt; diagnostik; mätsticka; digitala bioanalyser; laboration-a-chip; urinvägsinfektion; bakteriedetektering; E. coli; cellinkapsling; hydrogel; cellterapi; spindelsilke; magnetiska metamaterial.;

    Sammanfattning : The organisation of fluids in small compartments is ubiquitous in nature, such as in the cellular composition of all life. This work explores several engineering avenues where microscale fluid compartmentalization can bring novel material properties or novel functionality in life sciences or medicine. LÄS MER

  4. 8. Synthesis and characterisation of thermoset-layered silicate nanocomposites

    Författare :Xavier Kornmann; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymera konstruktionsmaterial; Polymeric Composite Materials;

    Sammanfattning : Thermoset-layered silicate nanocomposites are materials reinforced on a molecular scale by 1 nm-thick silicate layers of high aspect ratio dispersed in a thermoset matrix. These new materials were synthesised from unsaturated polyester and several epoxy resins (DGEBA/diamines and TGDDM/DDS) using two different approaches. LÄS MER

  5. 9. Composite Cryogels: Stationary Phase for Separation of Complex Media

    Författare :Solmaz Hajizadeh; Bioteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Composite cryogel; Complex media; Purification; Chromatography; Environmental application; Molecularly imprinted polymer;

    Sammanfattning : Demands for efficient, economical and fast separation and purification methods for various target molecules have led to the development of new techniques and materials for bioseparation processes. Separation can be carried out in both batch and chromatographic modes. LÄS MER

  7. 10. Development of New Multiscale Polymer Composites for Water Lubricated Tribological Contacts

    Författare :Hari Shankar Vadivel; Nazanin Emami; Sujeet Kumar Sinha; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; UHMWPE; Tribology; Composite; Friction; Wear; Tensile; Creep; Ageing; Machine Elements; Maskinelement;

    Sammanfattning : Moving towards a Green Economy, there is a growing demand to use environmentally friendly tribological systems that has resulted in industries turning towards new mate-rials and water-based lubrication to satisfy their needs. Considering the low viscosity of water, tribological contacts lubricated with it are likely to operate in boundary/mixed lubrication regime for relatively long periods. LÄS MER