Search for dissertations about: "DOAS"

Showing result 16 - 20 of 24 swedish dissertations containing the word DOAS.

  2. 16. Application of Passive DOAS for Studies of Megacity Air Pollution and Volcanic Gas Emissions

    Author : Mattias Erik Johansson; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Optical Remote Sensing Techniques offer the opportunity to, in real-time, obtain line averaged measurements of gases in the lower and upper atmosphere. These techniques easily offer themselves to automatization, which increases their usability for e.g. READ MORE

  4. 17. Optical remote sensing of the middle atmosphere from satellites - DOAS retrievals of O3 and NO2 from Odin/OSIRIS limb-scattering measurements

    Author : Samuel Brohede; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : .... READ MORE

  5. 18. Volatile Hydrocarbons in Ambient Air. Gas Chromatographic Assessment, Emissions and Human Exposure

    Author : Gunnar Barrefors; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; adsorbent sampling; 1; gas chromatography; biomass burning; Benzene; ethene; vehicle emissions; urban air; tobacco smoke; 3-butadiene;

    Abstract : Hydrocarbons in ambient air constitute a potential health risk for a large number of individuals. The work reported in this thesis focusses on human exposure to volatile hydrocarbons in ambient air. The analytical determinations were made by adsorbent sampling followed by thermal desorption and gas chromatography. READ MORE

  6. 19. Determination of Volatile Hydrocarbons in Urban Air

    Author : Lars Löfgren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; arenes; hydrocarbons; environment; alkenes; motor traffic; photochemical oxidant formation;

    Abstract : In the complex hydrocarbon mixture in urban air, the alkenes and arenes are of particular interest with respect to impact on health and environment. Knowledge of hydrocarbon concentrations in urban air is essential for the assessment and prevention of health hazards and photochemical oxidant formation. READ MORE

  7. 20. Space-Time Parameter Estimation in Radar Array Processing

    Author : Fredrik Athley; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis is about estimating parameters using an array of spatially distributed sensors. The material is presented in the context of radar array processing, but the analysis could be of interest in a wide range of applications such as communications, sonar, radio astronomy, seismology, and medical diagnosis. READ MORE