Sökning: "fiber types and size"

Visar resultat 21 - 25 av 38 avhandlingar innehållade orden fiber types and size.

  1. 21. Towards Green Wireless Access Networks : Main Tradeoffs, Deployment Strategies and Measurement Methodologies

    Författare :Sibel Tombaz; Jens Zander; Ki Won Sung; Ben Slimane; Peter Legg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy efficiency; wireless access; green radio; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : Wireless access networks today consume 0.5 percent of the global energy. Rapidly growing demand for capacity will further increase the energy consumption. Thus, improving energy efficiency has a great importance not only for environmental awareness but also to lower the operational cost of network operators. LÄS MER

  3. 22. Mesoporous Building Blocks : Synthesis and Characterization of Mesoporous Silica Particles and Films

    Författare :Emma M. Björk; Magnus Odén; Fredik Söderlind; José Córdoba; Mika Lindén; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Catalyst supports, drug delivery systems, hosts for nanoparticles, and solar cells are just some examples of the wide range of exciting applications for mesoporous silica. In order to optimize the performance of a specific application, controlling the material’s morphology and pore size is crucial. LÄS MER

  4. 23. Design, Fabrication and Characterization of Planar Lightwave Circuits Based on Silicon Nanowire Platform

    Författare :Ning Zhu; Lech Wosinski; Richard De La Rue; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik;

    Sammanfattning : Optical devices based on Planar Lightwave Circuit (PLC) technology have well been studied due to their inherited advantages from Integrated Circuits (IC), such as: small size, high reliability, mass production and potential integration with microelectronics. Among all the materials, silicon nanowire platform gains more and more interest. LÄS MER

  5. 24. Fundamentals of Wetting and Mechanical Durability of Superhydrophobic Coatings

    Författare :Pontus Olin; Lars Wågberg; Fredrik Tiberg; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : In paper I the friction between three different superhydrophobic surfaces and water drops were investigated using high‑speed video. The surfaces were two based on a hydrophobic wax and the third was the leaf of a Lotus (Nelumbo Nucifera). The acceleration of water drops was measured as a function of drop size and surface inclination. LÄS MER

  7. 25. In-plane mechanical properties of birch plywood and its performance in adhesively bonded connections

    Författare :Tianxiang Wang; Magnus Wålinder; Roberto Crocetti; Simon Aicher; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Birch plywood; in-plane mechanical properties; adhesively bonded connections; gusset plates; load-to-face grain angle; spreading angle; Björkplywood; mekaniska egenskaper i planet; limmade förband; belastningsvinkel relativt ytfanérens fiberriktning ; spridningsvinkel; Building Materials; Byggnadsmaterial;

    Sammanfattning : Birch (Betula spp.) is a hardwood species with a wide natural distribution on the Eurasian continent, especially in northern Europe. LÄS MER