Search for dissertations about: "polyethylene particles"

Showing result 16 - 20 of 40 swedish dissertations containing the words polyethylene particles.

  2. 16. Covalent coupling of antibodies to solid phases, in particular to particles and their use in immunoassay

    Author : Gerd Rundström; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Bioanalytical engineering; Bioanalytisk teknik;

    Abstract : The immobilisation of antibodies (Ab) or antigens (Ag) to solid phases is always a critical step when developing a heterogeneous immunoassay. There are two main procedures: passive adsorption and covalent coupling. Adsorption is a simple method, but it has its disadvantages including denaturation of antibodies and their leakage from the surface. READ MORE

  4. 17. Spray drying of particles intended for inhalation - Investigation of significant process variables and product characteristics, with focus on degradation and solid state properties

    Author : Kristina Mosén; Avdelningen för kemiteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Läkemedelsteknik och relaterad teknik; Pharmaceutical and related technologies; carbohydrate; insulin; process conditions; crystallinity; degradation; particle size; spray drying; inhalation;

    Abstract : The interest in spray drying for production of inhalable particles has grown considerably since the late 1980s. However, which process variables that control degradation and the solid state properties have not been subject to extensive research. This thesis deals with how important characteristics of inhalation particles can be controlled, i.e. READ MORE

  5. 18. Particle interactions and internal tablet structure : Factors affecting the mechanical strength of pharmaceutical compacts

    Author : Helena Olsson; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; galenisk farmaci; Pharmaceutics;

    Abstract : A simple tablet model was utilised to identify parameters responsible for tablet compactibility. In this model tablets were considered as homogeneous and isotropic aggregates of individual spherical particles. If the particles were located close enough to each other, interparticulate bonds were assumed to be developed. READ MORE

  6. 19. Investigation of Carbon Reinforced UHMWPE Nanocomposites for use in Orthopaedics

    Author : Silvia Suñer Moreno; Robert S Dwyer-Joyce; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Maskinelement; Machine Elements;

    Abstract : Over the lifetime of a person, the function of the natural hip joint can be altered due to trauma or disease and an artificial hip replacement may eventually be required. Ultra high molecular weight polyethylene (UHMWPE) is considered the gold standard material for the acetabular cup in hip arthroplasties. READ MORE

  7. 20. Late complications after total hip arthroplasty

    Author : Erik B Mathiesen; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The present study concerns late complications after total hip arthroplasty in relation to implant material, design, and mode of implant fixation. Frictional characteristics in retrieved and new acetabular sockets was studied under dry and lubricated conditions comparing conventional polyethylene sockets with polyacetal sockets from the Christiansen prosthesis. READ MORE