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Visar resultat 1 - 5 av 38 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Investigation of the functionality related characteristics of hydroxypropyl methylcellulose for the release from matrix tablets

    Författare :Anna Viridén; Chalmers tekniska högskola; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; functionality related characteristics; batch-to-batch variation; hydrophilic matrix tablets; hydroxypropyl methylcellulose; polymer characterisation; heterogeneous; drug release;

    Sammanfattning : Hydrophilic matrix tablets are a compressed well mixed composite of drug substance and excipients including a hydrophilic polymer. When the tablet comes in contact with biological fluids, the hydrophilic polymer starts to dissolve, a process that decreases the water penetration through the tablet and involves dimensional changes of the tablet due to swelling of the solvated polymers. LÄS MER

  3. 2. Identification and Variation of some Functionality Related Characteristics of Pharmaceutically Relevant Solid Materials and their Effect on Product Performance

    Författare :Frauke Fichtner; Göran Alderborn; Åke Rasmuson; Peter Kleinebudde; Uppsala universitet; []
    Nyckelord :Pharmaceutics; Particle size distribution; Degree of agglomeration; Amorphous lactose; Matrix agglomerates; Drug release; Compactability; Tablet tensile strength; Particle fracture strength; Surfactant; Compression; Galenisk farmaci;

    Sammanfattning : The aim of this thesis was to identify some functionality related characteristics of pharmaceutically relevant solid materials and to study the effect of their variation on processing behaviour and product performance. For this purpose, particles with different characteristics were prepared under a variety of conditions by crystal agglomeration, wet granulation and spray drying. LÄS MER

  4. 3. Polarization characteristics in polyelectrolyte thin film capacitors : Targeting field-effect transistors and sensors

    Författare :Oscar Larsson; Xavier Crispin; Magnus Berggren; Nathaniel Robinson; Ludvig Edman; Linköpings universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : Polymers are very attractive materials that can be tailored for specific needs and functionality. They can for instance be made electrically insulating or (semi)conducting, with specific mechanical properties. Polymers are often processable from a solution, which enables the use of low-cost manufacturing techniques to fabricate polymer devices. LÄS MER

  5. 4. Towards Emotion inspired Computational Intelligence (EiCI)

    Författare :Mahboobeh Parsapoor; Bertil Svensson; Urban Bilstrup; Jorge Armony; Högskolan i Halmstad; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : One of the main challenges in the computational intelligence (CI) community is to develop nature-inspired algorithms that can efficiently solve real-world problems such as the prediction of space weather phenomena. An early example in this context is taking inspiration from the biological neurons in the mammal’s nervous system and developing an artificial neuron. LÄS MER

  7. 5. Sustaining the Usefulness of eHealth Research Software : Lessons Learned in Action Design Research

    Författare :Mudassir Imran Mustafa; Jenny Eriksson Lundström; Jonas Sjöström; Owen Eriksson; Helena Grönqvist; Anders Hjalmarsson Jordanius; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; research software; eHealth; sustaining usefulness; action design research; academic research context; quality characteristics; design principles; fitness-utility; data export; technology adaptation; mobile adaptation; design science research; Information Systems; Informationssystem;

    Sammanfattning : Research software is vital to advancement in the sciences, engineering, humanities, and all other fields. Scientific research is dependent on the quality of and accessibility to research software. LÄS MER