Sökning: "Controlled-release"

Visar resultat 1 - 5 av 54 avhandlingar innehållade ordet Controlled-release.

  1. 1. Modification of microcapsules for controlled release

    Författare :Markus Andersson Trojer; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; block copolymer; coordination chemistry; polyelectrolyte multilayer; cross-linking; vibrational spectroscopy; electron paramagnetic resonance; imidazole; controlled release; colloidal stability; Microcapsule; quartz crystal microbalance with dissipation;

    Sammanfattning : Fouling of marine organisms such as algae and barnacles on the boat hull is an enormous problem for the shipping industry. The negative consequences for the society are both economical and environmental. To prevent fouling in general, biocides are typically incorporated directly into the paint. LÄS MER

  2. 2. Poly(Lactide-co-Glycolide) in Controlled-Release Pharmaceuticals - Release Mechanisms

    Författare :Susanne Fredenberg; Institutionen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PLGA; Poly lactide-co-glycolide ; Release mechanism; Diffusion; Controlled Release; Degradation; Protein;

    Sammanfattning : Controlled-release formulations reduce the frequency of injections and better maintain plasma concentrations within the therapeutic window. Poly(D,L-lactide-co-glycolide) (PLG) is currently the most frequently used biodegradable polymer for this application. LÄS MER

  3. 3. Structure control by phase separation and influence on mass transport in films for controlled release

    Författare :Helene Andersson; Chalmers University of Technology; []
    Nyckelord :NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; ENGINEERING AND TECHNOLOGY; Controlled release; Coating; Cellulose derivatives; Hydroxypropyl cellulose; Solvent evaporation; Ethyl cellulose; Phase separation; Polymer blend; Molecular weight;

    Sammanfattning : Controlled release coatings for oral pharmaceutics are often made of cellulose derivatives. Such coatings can be used to promote a prolonged therapeutic concentration in the blood by a slow drug delivery in the gastrointestinal tract. LÄS MER

  4. 4. Controlled Release Gel Formulations for Mucosal Drug Delivery

    Författare :Mattias Paulsson; David Attwood; Uppsala universitet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; Galenisk farmaci; Pharmaceutics;

    Sammanfattning : Drug delivery to nasal or ocular mucosa for either local or systemic action faces many obstacles – these routes are protected by effective mechanisms. Gel formulations with suitable rheological and mucoadhesive properties increase the contact time at the site of absorption. LÄS MER

  5. 5. Enhanced edible films of mixed biopolymers for controlled release

    Författare :Maria Petersson; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acetem; phase separation; mechanical properties; hylon; edible rilm; release; starch; zein; water vapour premeability;

    Sammanfattning : In recent years there has been a growing interest and increased intensity of research in the area of edible films and coatings. Edible films and coatings can improve quality and shelf-life of food products by acting as barriers to e.g. moisture and oxygen, hence preventing dehydration and oxidative reactions. LÄS MER