Search for dissertations about: "Håkan Engqvist"

Showing result 1 - 5 of 28 swedish dissertations containing the words Håkan Engqvist.

  1. 1. Microstructural aspects on wear of cemented carbides

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Håkan Engqvist; [2000]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Materialvetenskap; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap; Materialvetenskap; Materials Science;

    Abstract : Cemented carbides are known to be very wear resistant and are therefore often usedin applications involving surface damage and wear. The work presented hereinvestigates the coupling between the microstructure and some fundamental wearand deformation mechanisms typical for cemented carbides. READ MORE

  2. 2. Ceramic Materials for Administration of Potent Drugs

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Bing Cai; Susanne Bredenberg; Håkan Engqvist; Wei Xia; Miguel Manzano García; [2015]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tamper-resistance; Oral formulation; Transdermal formulation; Biomaterials; Microneedles;

    Abstract : This thesis aimed to investigate and document the potential of applying ceramics in two specific drug delivery applications: tamper-resistant opioid formulations and transdermal enhancement protrusions.Geopolymers were developed into the matrix for a tamper-resistant formulation, aiming to protect drug substances from non-medical abuse. READ MORE

  3. 3. Geopolymer-based drug formulations for oral delivery of opioids

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Bing Cai; Susanne Bredenberg; Håkan Engqvist; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Opioid therapy for chronic pain generally use controlled release formulations to deliver analgesic drugs around-the-clock. Controlled release dosage forms can enlarge the therapeutic effect by controlling the rate and site of release. However, with high drug content, opioid formulations are easily targeted for non-medical use. READ MORE

  4. 4. Titanium Dioxide Photocatalysis in Biomaterials Applications

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Yanling Cai; Ken Welch; Maria Strømme; Håkan Engqvist; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; titanium dioxide; photocatalysis; bioactivity; antibacterial effect; metabolic activity assay; biofilm; reactive oxygen species; disinfection kinetics; post-UV;

    Abstract : Despite extensive preventative efforts, the problem of controlling infections associated with biomedical materials persists. Bacteria tend to colonize on biocompatible materials and form biofilms; thus, novel biomaterials with antibacterial properties are of great interest. READ MORE

  5. 5. Glass Ionomer Cements with Improved Bioactive and Antibacterial Properties

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Song Chen; Håkan Engqvist; Wei Xia; Jie Zhou; [2016]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biomaterial; glass ionomer cement; bioactivity; hydroxyapatite; monetite; calcium silicate;

    Abstract : Dental restorative cements are placed in a harsh oral environment where they are subjected to thermal shock, chemical degradation, and repeating masticatory force. The ideal restorative dental cements should have superior mechanical properties, chemical stability, aesthetic, good handling properties, biocompatibility, antibacterial properties, and preferably bioactivity. READ MORE