Search for dissertations about: "Radial distribution system"

Showing result 11 - 15 of 45 swedish dissertations containing the words Radial distribution system.

  2. 11. Reliability Evaluation of Distribution ArchitecturesConsidering Failure Modes and Correlated Events

    Author : Sajeesh Babu; Patrik Hilber; Hans Kristian Høidalen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Power systems are in a phase of automation where intelligent components and sub-systems are employed to monitor, control and manage the grid. Quantifying the complex consequences on system reliability, from the integration of such automated and semi-automated equipment into the existing grid is important for maintenance optimisation and fault mitigation. READ MORE

  4. 12. Aero Engine Intercooling

    Author : Xin Zhao; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PIV; CFD; porous media; aero engine; pressure measurements; intercooling control; system performance; intercooler; variable flow path;

    Abstract : Intercooling has the potential to provide a shortcut to the next generation aero engines with higher bypass ratio (BPR), higher overall pressure ratio (OPR) and higher turbine inlet temperature (TIT) by lowering the high pressure compressor (HPC) delivery temperature. To be able to establish a systematic understanding of aero engine intercooling, the heat transfer and pressure loss characteristics of a given intercooler architecture need to be known in the parameter range anticipated for the engine optimization. READ MORE

  5. 13. Electrochemical and ion transport characterisation of a nanoporous carbon derived from SiC

    Author : Marcelo Zuleta; Pehr Björnbom; Derek Pletcher; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; Cottrell equation; radial diffusion; chronoamperometry; potential step measurements; microelectrode technique; nanoporous carbon; Kemiteknik; Chemical engineering; Kemiteknik;

    Abstract : In this doctoral project, a relatively new form of carbon material, with unique narrow pore size distribution around 7 Å and with uniform structure, has been electrochemically characterised using the single particle microelectrode technique. The carbon has been used as electrode material for supercapacitors. READ MORE

  6. 14. Nuclear receptor functions in the central nervous system : clues from knockout mice

    Author : Sandra Andersson; Karolinska Institutet; Karolinska Institutet; []
    Keywords : Estrogen receptor; liver X receptor; 5alpha-androstane-3beta; 17beta-diol; brain development; neuronal degeneration; spinal cord; motor neuron.;

    Abstract : The nuclear receptor (NR) superfamily is the largest known family of transcription factors in eukaryotes. In the 1980 s when the size of the NR family and the scope of the functions of its members were being discovered, tissue distribution studies revealed that the mRNAs of many of these receptors were expressed in the central nervous system. READ MORE

  7. 15. A Photometric Study of the Galactic Disks based on Strömgren Photometry

    Author : Anna Arnadottir; Astronomi - Genomgår omorganisation; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; density parameters; formation.; metallicity distribution function; thin disk; metallicities. Galaxy - thick disk; colours; Photometry - Strömgren; luminosities; SDSS. Stars - classification;

    Abstract : One of the key questions in todays galaxy research is the formation and evolution of disk galaxies such as the Milky Way. Using observations in the intermediate band Stromgren uvby filter system we have investigated how both density and metallicity varies within the Galactic disks in order to learn more about the Galaxy and its past. READ MORE