Essays about: "Nitrous Oxide"

Showing result 21 - 25 of 59 essays containing the words Nitrous Oxide.

  1. 21. Spatial variation in GHG emissions from drained organic forest soils : implications for Swedish UNFCCC reporting

    University essay from SLU/Dept. of Soil and Environment

    Author : Anna Oskar; [2021]
    Keywords : greenhouse gas; carbon dioxide; methane; nitrous oxide; peat; drainage; ditch; GHG inventory;

    Abstract : Drainage of organic soils for forestry generally increases soil CO2 and N2O emissions but decreases CH4 emissions. Under the United Nations Framework Convention on Climate Change (UNFCCC) countries provide annual national inventories of anthropogenic greenhouse gas (GHG) emissions and removals, which includes emissions of GHGs from drained organic forest soil. READ MORE

  3. 22. Cryoballoon Catheters with sensors for treatment of AF

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Axel Anderberg; [2021]
    Keywords : Atrial fibrillation; balloon; catheter; cryoablation; flexible electronics; Ballong; flexibel elektronik; förmaksflimmer; kateter; kryoablation;

    Abstract : Atrial fibrillation is a cardiac condition in which the heart rate is abnormally fast and/or irregular. While not yet proven to be fatal on its own, it severely increases the probability of developing further medical conditions including a five times higher risk of getting stroke. READ MORE

  4. 23. Detection of nitrous oxide through IR-DFWM in gas flows with future application in ammonia flames

    University essay from Lunds universitet/Förbränningsfysik; Lunds universitet/Fysiska institutionen

    Author : Martin Passad; [2021]
    Keywords : Physics; Optics; Lasers; Environment; Hydrogen; Hydrogen Energy; Ammonia Energy; DFWM; Ammonia; Nitrous Oxide; Ammonia Flame; Ammonia Combustion; Physics and Astronomy;

    Abstract : This thesis report on an investigation into the applicability of mid-infrared degenerate four-wave mixing (IR-DWFM) as a method to detect N\(_2\)O in ammonia flames. DFWM has previously been used for concentration measurements on other molecules, but has never, to the author's knowledge, been applied to measure N\(_2\)O in ammonia flames before. READ MORE

  5. 24. Numerical study with computational fluid dynamics of hybrid rocket engine.

    University essay from Luleå tekniska universitet/Rymdteknik

    Author : Martin Lundmark; [2020]
    Keywords : LES; Hybrid Rocket; openFOAM;

    Abstract : In this thesis a Large Eddy Simulation (LES) of a hybrid rocket engine burning ethylene (C2H4) in nitrous oxide (N2O) is explored. This is done primarily using a solver and solution scheme provided by the Swedish Defence Research Agency (FOI) and an (at this date) unpublished chemistry model. READ MORE

  6. 25. Spatial and temporal changes in microbial community composition in a full-scale woodchip bioreactor for treating mine water

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Felicia Wallnäs; [2020]
    Keywords : ;

    Abstract : Incomplete detonation of nitrogen-based explosives can lead to abundant levels of nitrate in mine groundwater. The possibility of reducing nitrogen levels from the wastewater through denitrification, anammox and DNRA has been investigated using a full-scale bioreactor. The bioreactor is situated subsurface and is filled with pine woodchips. READ MORE