Sökning: "johan chalmers 2001"

Visar resultat 1 - 5 av 10 avhandlingar innehållade orden johan chalmers 2001.

  1. 1. On harmonic distortion in power systems

    Författare :Johan Lundquist; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; converters; power sustem monitoring; harmonic distortion; losses; voltage notching; drives; harmonic filter; unbalance; harmonic propagation; resonance; rectifiers; power quality; active power;

    Sammanfattning : .... LÄS MER

  3. 2. Electron transfer mediated by DNA

    Författare :Johan Olofsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ruthenium complex; light switch effect; luminescence and ps-Time Resolved Resonance Raman ps TR3 ; DNA bases; charge transfer;

    Sammanfattning : .... LÄS MER

  4. 3. Gas Mixing in a Circulating Fluidised Bed Boiler

    Författare :Johan Sternéus; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; circulating fluidized bed; gas mixing; tracer; boiler; dispersion; scaling; turbulence; two-phase flow; fluidization;

    Sammanfattning : The present thesis is a study on the gas-mixing behaviour in a circulating fluidised bed (CFB) boiler. The aim is to describe how gas is spread in different regions of a CFB furnace and to explain variations in the mixing rate under different operating conditions. LÄS MER

  5. 4. Thermal and mechanical behaviour of railway wheel steel

    Författare :Johan Ahlström; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase transformations; plastic deformation; sliding contact; heat conduction modelling; low cycle fatigue; railway wheel steel Fe-0.5C-0.3Si-0.75Mn-0.05V ; austenitisation; transformation kinetics; heat treatment; friction;

    Sammanfattning : The wish to increase loads and speeds of trains puts higher demand on construc¬tion, engineering and material than ever before. Therefore it is necessary to con¬tinuously develop technology to meet these increasing requirements. LÄS MER

  7. 5. Multifunctional Waveguide Grating Couplers for Integrated Optics

    Författare :Johan Backlund; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis describes a novel waveguide component in integrated optics called a multifunctional grating coupler. It couples light in or out of optical waveguides and provides additional optical functions such as beam splitting, arbitrary focusing, polarization sensing, and wavelength separation (wavelength division demultiplexing). LÄS MER