Search for dissertations about: "N2O"

Showing result 21 - 25 of 93 swedish dissertations containing the word N2O.

  2. 21. Reaction kinetics of NH3-SCR over Cu-CHA from first principles

    Author : Yingxin Feng; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; density functional theory; ammonia assisted selective catalytic reduction; Cu-CHA; microkinetic modeling; Catalysis;

    Abstract : Ammonia assisted selective catalytic reduction (NH3-SCR) is a leading technology that is used for NOx reduction to N2 and H2O in oxygen excess. Thanks to its high activity, high selectivity, and durability, Cu-CHA is commercialized as an NH3-SCR catalyst. READ MORE

  4. 22. Ecology of fungal denitrifiers in terrestrial ecosystems : global patterns and effects of management in agricultural soils

    Author : Yvonne Bösch; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Denitrification is the dominant source of nitrous oxide (N2O) from terrestrial ecosystems, a potent greenhouse gas and stratospheric ozone-depleting agent. Fungi can perform denitrification and terminate the process with N2O, making them a potentially important source of N2O. READ MORE

  5. 23. Intravenous access in distressed children : effects of midazolam and nitrous oxide on success rate, hormone and metabolic stress responses

    Author : Kerstin Ekbom; Karolinska Institutet; Karolinska Institutet; []
    Keywords : children;

    Abstract : Background and Aims: Intravenous (IV) access has demonstrated high levels of pain and distress in children. A stress full IV access should be avoided, primarily by the children, but also for the parents and staff. READ MORE

  6. 24. Greenhouse gas emissions from food and garden waste composting : effects of Management and Process Conditions

    Author : Evgheni Ermolaev; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Composting is a robust waste treatment technology. Use of finished compost enables plant nutrient recycling, carbon sequestration, soil structure improvement and mineral fertiliser replacement. However, composting also emits greenhouse gases (GHG) such as methane (CH₄) and nitrous oxide (N₂O) with high global warming potential (GWP). READ MORE

  7. 25. Nitrogen cycling communities associated to roots of arable crops in relation to management : plant, intercropping and soil effects

    Author : Enid Ming Zhao; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Management of terrestrial nitrogen (N) has been identified as a key challenge in the implementation of sustainable agricultural practices. Transformations of inorganic N are mainly performed by microbial functional guilds that regulate the retention or loss of N. READ MORE