Sökning: "fosfor"
Visar resultat 1 - 5 av 67 avhandlingar innehållade ordet fosfor.
1. The Story of Phosphorus : Sustainability implications of global phosphorus scarcity for food security
Sammanfattning : The story of phosphorus began with the search for the philosopher’s stone, and centuries later the critical role of phosphorus in soil fertility and crop growth was highlighted. Eventually, phosphorus was implicated in the global environmental challenge of eutrophication. LÄS MER
2. Wastewater treatment in constructed wetlands : Effects of vegetation, hydraulics and data analysis methods
Sammanfattning : Degradation of water resources has become one of the most pressing global concerns currently facing mankind. Constructed Wetlands (CWs) represent a concept to combat deterioration of water resources by acting as buffers between wastewater and receiving water bodies. LÄS MER
3. Deactivation of emission control catalysts for heavy-duty vehicles : Impact of biofuel and lube oil-derived contaminants
Sammanfattning : Catalytic emission control is used to reduce the negative impact of pollutants from diesel exhausts on our health and on the environment. For a heavy-duty truck, such a system consists of a diesel oxidation catalyst (DOC), a diesel particulate filter (DPF), a selective catalytic reduction (SCR) catalyst, and an ammonia slip catalyst (ASC). LÄS MER
4. Assessment of Raw Materials in Stainless Steelmaking-Their Energy Consumption and Greenhouse Gas Emission
Sammanfattning : In stainless steelmaking, around 68% of the total greenhouse gas emissions come from the processing of raw materials. Thus, it is important for steelmakers to make efforts together with their raw material suppliers to implement low-carbon initiatives. To facilitate such initiatives, assessment of raw materials will provide guidance. LÄS MER
5. Disputatio physica de phosphoris, quam suffragante amplissimo collegio philosophico, in regia academia Upsalensi præside ... Andrea Drossandro ... publicæ eruditorum censuræ, horis ante meridiem consvetis in auditorio Gustaviano majori ad diem [27] Junij anno 1691 modeste submittit, Ericus E. Diupædius Angerm
Sammanfattning : .... LÄS MER