Search for dissertations about: "Nitrogen Cycle"
Showing result 16 - 20 of 116 swedish dissertations containing the words Nitrogen Cycle.
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16. Nitrogen and Redox Metabolism in Saccharomyces cerevisiae
Abstract : Anaerobic conversion of glucose to ethanol by the yeast Saccharomyces cerevisiae has been studied. Glycerol is formed as a by-product in order to maintain the overall redox balance. READ MORE
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17. Metabolic regulation of nitrogen fixation in Rhodospirillum rubrum
Abstract : Nitrogen, along with carbon, hydrogen and oxygen, is amongst the most abundant elements in all living cells. The capability to convert atmospheric dinitrogen to biologically usable nitrogen compounds is only found in some prokaryotes. READ MORE
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18. SBR-technology - use and potential applications for treatment of cold wastewater
Abstract : Biological nutrient removal is used as an indicator of SBR performance at nine different SBRplants operated for a long period at low water temperatures (5 – 10oC). Typically needed aeratedSRT (Solids Residence Time) for complete nitrification is found to be in the range of 6 – 10 days. READ MORE
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19. Molecular detection of abundance and activity of marine, symbiotic, N2-fixing cyanobacteria
Abstract : Marine primary productivity in large parts of the oceans is supported by nitrogen fixers (diazotrophs). Richelia, a genus of multiple closely related species of heterocystous filamentous cyanobacterial diazotrophs, are often found in symbioses with a few genera of diatoms. Several Richelia species: R. euintracellularis, R. READ MORE
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20. Free-Vehicle Benthic Lander Technology for the Study of Biogeochemical Processes in Marine Sediments
Abstract : Various sediment sampling and incubation techniques were used to characterize benthic biogeochemical processes important for an improved understanding of the oceanic carbon cycle. Recent flux data from the Arctic Siberian shelf are revealing differences (often by a factor of ten) between areas affected by the big Russian river outlets (high fluxes) and areas with low influence from land (low fluxes). READ MORE