Sökning: "image enhancement"

Visar resultat 16 - 20 av 165 avhandlingar innehållade orden image enhancement.

  1. 16. Mesoporous magnesium carbonate as a drug delivery vehicle for stabilising amorphous drugs and regulating their release rate

    Författare :Peng Zhang; Maria Strømme; Niklas Hedin; Uppsala universitet; []
    Nyckelord :mesoporous; magnesium carbonate; drug delivery; solubility enhancement; bioavailability; pharmacokinetics; diffusion release; controlled release; Teknisk fysik med inriktning mot nanoteknologi och funktionella material; Engineering Science with specialization in Nanotechnology and Functional Materials;

    Sammanfattning : In today’s drug discovery, the number of candidate drugs based on new molecular entities with poor aqueous solubility is increasing. Since poor aqueous solubility of an active pharmaceutical ingredients (APIs) is associated with low bioavailability and thus limite their therapeutic effect, this is often a great challenge in the development of new drugs when oral administration is the preferred route of administration. LÄS MER

  3. 17. Feedback Enhancement of Immune Responses by IgE, IgM, and IgG3 Antibodies

    Författare :Zhoujie Ding; Birgitta Heyman; Eva Severinson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; IgE; IgM; IgG3; antibody responses; T-cell responses; antigen transportation; antigen presentation; complement; complement receptors 1 and 2; Immunologi; Immunology;

    Sammanfattning : Antibodies can enhance or suppress the immune responses against their specific antigens. This phenomenon is known as antibody-mediated feedback regulation. We have studied the mechanisms underlying IgE-, IgM-, and IgG3-mediated enhancement of immune responses in mouse models using intravenous immunization. LÄS MER

  4. 18. Selectivity Enhancement of Gas Sensitive Field Effect Transistors by Dynamic Operation

    Författare :Christian Bur; Anita Lloyd Spetz; Andreas Schütze; Mike Andersson; Stephen Semancik; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Gas sensitive field effect transistors based on silicon carbide, SiC-FETs, have been applied to various applications mainly in the area of exhaust and combustion monitoring. So far, these sensors have normally been operated at constant temperatures and adaptations to specific applications have been done by material and transducer platform optimization. LÄS MER

  5. 19. Methods for Objective and Subjective Video Quality Assessment and for Speech Enhancement

    Författare :Muhammad Shahid; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Video Quality Assessment; No-Reference Methods; Reduced-Reference Methods; Subjective Experiments; Speech Enhancement; Adaptive Gain Equalizer;

    Sammanfattning : The overwhelming trend of the usage of multimedia services has raised the consumers' awareness about quality. Both service providers and consumers are interested in the delivered level of perceptual quality. The perceptual quality of an original video signal can get degraded due to compression and due to its transmission over a lossy network. LÄS MER

  7. 20. Optimization of paediatric CT examinations - An approach to minimize absorbed dose to patients with regard to image quality and observer variability

    Författare :Kerstin Ledenius; Göteborgs universitet; []
    Nyckelord :Computed Tomography; Paediatrics; Radiation Dosage; Computer Simulations; Nonparametric Statistics; Observer Variation; Radiographic Image Enhancement;

    Sammanfattning : The absorbed dose to paediatric patients is important bearing in mind the increased risk of radiation-induced cancer due to exposure to X-rays at young ages. Questions have also been raised of whether a CT examination of the paediatric brain might lead to a reduction in cognitive function. LÄS MER