Essays about: "nitrogen evaporation"
Showing result 16 - 19 of 19 essays containing the words nitrogen evaporation.
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16. Effect of Alternative Fuels on SCR Chemistry
University essay from KTH/Skolan för kemivetenskap (CHE)Abstract : In the time line of world industrial age, the most important era begins in the late 18th century when the use of fossil fuels was growing intensively. This approach has continued and developed up to the 20th century. Besides, this trend has had side effects like polluting environment. READ MORE
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17. Urine drying with ash and lime at temperatures 20-60°C : nutrient recovery from source separated urine
University essay from SLU/Dept. of Energy and TechnologyAbstract : Utilization of source-separated urine in agricultural production has been practiced and different treatment options have been developed in last two decades. The purpose of this study was to develop a drying technique for untreated human urine added to ash and lime as drying agent at temperature 20-60°C. READ MORE
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18. Impact of vehicle exhaust emitted by the combustion of biofuels on human health
University essay from Sektionen för ekonomi och teknik (SET)Abstract : Introduction: Significant changes in the global ecosystem, together with a potential shortfall in oil resources, have stimulated intense interest in the development of other sources of energy, and most particularly biofuels since these are basically considered to be less harmful to human health than petroleum-based fuels. However, information about the impact of biofuel-derived vehicle emissions on human health is limited and incomplete. READ MORE
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19. Vallbrott med hjälp av grisar
University essay from SLU/Dept. of Soil SciencesAbstract : To investigate the possibilities for effective soil tillage, that could imply lower costs, lower negative environmental impact and in addition a meaningful occupation for foraging pigs, a field experiment was carried out in Gränna, Småland, during growing season 2006. The experiment contained two treatments that were repeated three times and were carried out on a couch grass-infected fallow on a light soil close to Sweden's second largest lake, Vättern. READ MORE
