Sökning: "ozone"

Visar resultat 11 - 15 av 188 avhandlingar innehållade ordet ozone.

  1. 11. Application of ozone in wastewater treatment : For mitigation of filamentous bulking sludge & reduction of pharmaceutical discharge

    Författare :Filip Nilsson; Avdelningen för kemiteknik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ozone; Filamentous bulking sludge; Pharmaceutical reduction;

    Sammanfattning : Wastewater treatment with activated sludge is the most common way of treating wastewater. The process relies on bacteria converting nutrients, BOD and COD into biomass, CO2 and N2. Even though the configuration of activated sludge processes and wastewater treatment plants varies there are common problems which are shared. LÄS MER

  3. 12. Atmospheric Change and Potato. The Impact of tropospheric ozone and elevated carbon dioxide on tuber yield and quality

    Författare :Kristin Piikki; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bintje; carbohydrate; carbon dioxide; citric acid; cultivar; fructose; glucose; Kardal; macronutrient; malic acid; mineral; open-top chamber; OTC; ozone; potato; Solanum tuberosum; starch; variety; yield;

    Sammanfattning : .... LÄS MER

  4. 13. Regional and local surface ozone variations in relation to meteorological conditions in Sweden

    Författare :Lin Tang; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LWTs; surface ozone; high-ozone events; long-range transport; TAPM; MM5; NOx-O3; Sweden;

    Sammanfattning : Air quality is strongly dependent on meteorological conditions. Atmospheric circulation encapsulates general information about local meteorological variables to some extent, and can serve as an explanatory variable for air quality at a regional or local scale. LÄS MER

  5. 14. Modelling the middle atmosphere and its sensitivity to climate change

    Författare :Andreas Jonsson; Jörg Gumbel; Joanna Haigh; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; climate change; middle atmosphere; ozone; carbon dioxide; stratosphere; mesosphere; chemical kinetics; atmospheric tides; Meteorology; Meteorologi;

    Sammanfattning : The Earth's middle atmosphere at about 10-100 km has shown a substantial sensitivity to human activities. First, the ozone layer has been reduced since the the early 1980s due to man-made emissions of halogenated hydrocarbons. LÄS MER

  7. 15. Respiratory and cardiovascular effects of exposure to oxidative air pollutants

    Författare :Stefan Barath; Ellinor Ädelroth; Anders Blomberg; E David Newby; M Howard Kipen; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Air Pollution; Particulate Matter; Diesel Exhaust; Ozone; Experimental Exposure studies; Luftföroreningar; Partiklar; Disel avgaser; ozon; Experimentella exponerings studier; Internal medicine; Invärtesmedicin; lungmedicin; Lung Medicine; kardiologi; Cardiology; Environmental Science; miljövetenskap;

    Sammanfattning : Background: The negative effects of air pollution on morbidity and mortality have been known since the mid 20th century. The two most well known examples are the Meuse Valley disaster in the 1930’ies and the London black fog in December 1952. LÄS MER