Sökning: "commercial ceramics"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden commercial ceramics.

  1. 1. Ceramic Materials for Administration of Potent Drugs

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

    Sammanfattning : 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. LÄS MER

  3. 2. Exploratory Study of Novel Materials Used for Intermediate Temperature Solid Oxide Fuel Cell (IT-SOFC) Electrolytes

    Författare :Junfu Bu; Pär Jönsson; Zhe Zhao; Christopher Knee; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hafnium oxide; Solid oxide fuel cells SOFCs ; Electrolyte; Electrochemical impedance spectroscopy; Solid state reaction method; Solid state reactive sintering SSRS ; Ionic conductivity; oxygen ion conductivity; Protonic conductivity; Composite electrolyte.;

    Sammanfattning : Currently, yttria-stabilized zirconia (YSZ) is still the dominant electrolyte material in commercial SOFC applications. But it has severe drawbacks due to its high operating temperatures. In present work, two electrolyte materials: Hf0.69Y0. LÄS MER

  4. 3. Improved inspection and micrometrology of embedded structures in multi-layered ceramics : Development of optical coherence tomographic methods and tools

    Författare :Rong Su; Lars Mattsson; Peter Ekberg; Jerzy Pluciński; KTH; []
    Nyckelord :Metrology; Optical Coherence Tomography; Ceramics; Embedded Structure; Multilayer; Nondestructive Testing; Optical Inspection; Critical Dimension Measurement; Infrared Imaging; Scattering; Mie Calculation; Image Processing; Monte Carlo Simulation; 测量学， 光学相干断层扫描术，陶瓷，嵌入式结构，多层，无损检测，光学检测，关键尺寸测量，红外成像，散射，Mie计算，图像处理，Monte Carlo模拟; SRA - Production; SRA - Produktion;

    Sammanfattning : Roll-to-roll manufacturing of micro components based on advanced printing, structuring and lamination of ceramic tapes is rapidly progressing. This large-scale and cost-effective manufacturing process of ceramic micro devices is however prone to hide defects within the visually opaque tape stacks. LÄS MER

  5. 4. Cattle for beads : The archaeology of historical contact and trade on the Namib Coast

    Författare :Jill Kinahan; Uppsala universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Archaeology; Historical archaeology; contact; indigenous response; glass trade beads; commercial ceramics; nineteenth century; Namib coast; Arkeologi; Archaeology subjects; Arkeologiämnen; arkeologi; Archaeology;

    Sammanfattning : Early contacts between indigenous pastoralists at Walvis Bay on the Namib Coast and Western seafarers are poorly documented and little understood. Trade augmented regional exchange networks with a range, of archaeologically visible and easily identifiable objects. LÄS MER

  7. 5. Engineering Ceramics for Tribological Systems. Manufacture, Properties and Testing

    Författare :Lars Kahlman; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermal wear; ceramic composite; face seal; engineering ceramic; erosion; hybrid bearing; thermal spalling; lubrication; tribology; abrasive waterjet; abrasive wear;

    Sammanfattning : A broad range of commercial and experimental grades of ceramics and ceramic composites was tested in various model tests and simplified component tests. The tests were done to establish important microstructural features, friction and wear mechanisms. LÄS MER