Sökning: "TDLAS"

Visar resultat 1 - 5 av 9 avhandlingar innehållade ordet TDLAS.

  1. 1. Innovative Contact Free Sensors for Metallurgical Process Control

    Författare :Donald Malmberg; Stuart M. Millman; Högskolan i Halmstad; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; microwave spectroscopy; laser; TDLAS; high temperature; gas; slag; NATURAL SCIENCES; NATURVETENSKAP; spectroscopy; slag analysis; high temperatures; Mät- och instrumenteringsteknik; Instrumentation technology; TDLAS; microwave; laser; Fysicumarkivet A:2003:Malmberg;

    Sammanfattning : The steel- and metal industry has an extensive production processing comprising many different process steps of solid, gaseous and liquid nature. Thus it is obvious that a number of different measurement technologies must be used to collect and evaluate key physical parameters which are necessary to control the production processes. LÄS MER

  3. 2. Optical Diagnostics for Quantitative Potassium Chemistry in Biomass Thermochemical Conversion Processes

    Författare :Wubin Weng; Förbränningsfysik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optical diagnostics; Quantitative measurement; TDLAS; Sulfation; Biomass; UV absorption spectroscopy; TLAF; Potassium chemistry;

    Sammanfattning : Biomass is an essential sustainable and carbon-neutral energy source. Through thermochemical conversion processes, such as combustion and gasification, biomass can generally be used in boilers to provide heat and/or power. Biomass fuels contain varying amounts of potassium, chlorine and sulfur. LÄS MER

  4. 3. Diode-laser absorption spectroscopy - applications in medicine and environmental monitoring

    Författare :Jim Larsson; Förbränningsfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TDLAS; GASMAS; biophotonics; Scheimpflug Lidar; Fysicumarkivet A:2019:Larsson;

    Sammanfattning : A major part of this thesis work has been research in a medical project, where, together with industry and clinical partners, the aim was to develop a prototype system for non-invasive monitoring of premature babies based on the optical measurement technique gas in scattering media absorption spectroscopy (GASMAS). Part of the project was to develop a 3D-printed tissue phantom based on chest X-ray images of the thorax of a premature infant. LÄS MER

  5. 4. Development of diode laser-based absorption and dispersion spectroscopic techniques for sensitive and selective detection of gaseous species and temperature

    Författare :Lemthong Lathdavong; Ove Axner; Jürgen Röpcke; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Absorption Spectrometry AS ; Wavelengh Modulation Absorption Spectrometry WMAS ; Faraday Modulation Spectrometry FAMOS ; Tunable Diode Laser Absorption Spectrometry TDLAS ; Optics; Optik; fysik; Physics;

    Sammanfattning : The main aim of this thesis has been to contribute to the ongoing work with development of new diode-laser-based spectroscopic techniques and metho­do­lo­gies for sensitive detection of molecules in gas phase. The techniques under scrutiny are tunable diode laser absorption spectrometry (TDLAS) and Faraday modulation spectrometry (FAMOS). LÄS MER

  7. 5. Infrared laser spectroscopic methods for temperature and electric field strength measurements

    Författare :Svante Höjer; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecular beam; electric field strength; high voltage components; sulfur hexafloride; ammonia; optical sensors; insulating gases; nitric oxide; industrial applications; Stark effect; Tunable diode laser absorption spectroscopy TDLAS ;

    Sammanfattning : .... LÄS MER