Sökning: "methane gas"
Visar resultat 21 - 25 av 339 uppsatser innehållade orden methane gas.
21. Linking the selectivity of varying surface phases of a real palladium catalyst toward specific methane oxidation pathways with Ambient Pressure X-ray Photoelectron Spectroscopy
Master-uppsats, Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionenSammanfattning : The study of heterogeneous catalysis, especially within methane oxidation, is of high importance in order to more efficiently remove unburned methane from bio-fuel exhausts. This is relevant as bio-fuel engines will replace those driven by fossil fuels in the coming decades. LÄS MER
22. Experimental study on the effect of rocket nozzle wall materials on the stability of methane
Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)Sammanfattning : There has recently been an increased interest in methane as a rocket propellant due to its physical properties as well as the possibility of in-situ resource utilization in places like Mars. As part of ESA’s Future Launcher Preparatory Program, KTH in cooperation with GKN Aerospace has started the MERiT program, which seeks to study the characteristics of methane under conditions found in rocket nozzle cooling channels. LÄS MER
23. Etablering av rötningsanläggning för biogasproduktion i gårdsskala : En teknoekonomisk analys utifrån platsspecifika förutsättningar
Master-uppsats, Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)Sammanfattning : Förnyelsebar energi är en nyckelfaktor för en hållbar utveckling. Biogas möjliggör för verksamheter med organiska restflöden att etablera egen energiproduktion av förnyelsebara energi. Problemet med etablering av mindre rötningsanläggningar är begränsad biogasproduktion till höga investeringskostnader. LÄS MER
24. An Environmental (LCA) and economic assessment (LCC) of on-farm and centralized alternatives for biogas production for two Swedish farms in Götene
Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknikSammanfattning : Biogas production through anaerobic digestion is an important part towards the achievement of a bio-based and circular economy in Sweden. In fact, Swedish government proposed a strategy suggesting that biogas production should be increased from 2 TWh today to 7 TWh by 2030. LÄS MER
25. Short-Time Temporal Changes of CH4 Fluxes in Different Tropical Tree Species : In-situ research regarding methane emissions from inundation-adapted Amazonian tree species in Jardim Bot�nico do Rio de Janeiro.
Kandidat-uppsats, Linköpings universitet/Tema MiljöförändringSammanfattning : Methane (CH4) is guaranteed to affect climate change and is essential in rising temperatures. Scientists have known for over two decades that wetlands emit CH4 to such an extent that it affects our climate. Tropical trees that grow in wetlands tend to emit or act as a conduit of CH4, to the extent that it has a negative environmental impact. LÄS MER