Sökning: "TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Vatten i natur och samhälle"
Visar resultat 16 - 20 av 82 avhandlingar innehållade orden TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Vatten i natur och samhälle.
16. Determination of Volatile Sulfur Compounds in Air and other Gas Matrices : Development and Applications of Solid-Phase Microextraction
Sammanfattning : Volatile sulphur compounds (VSCs) are frequently emitted during bioindustrial activities, such as production of biogas, sewage treatment, landfilling, pulpmilling, and the slaughtering of animals and meat processing. VSCs are reactive and malodorous, and they can also be detrimental to human health, therefore it is of great interest to be able to analyze these compounds. LÄS MER
17. Control of nutrient fluxes in large river basins
Sammanfattning : Nitrogen and phosphorus transported with rivers from land to sea have been reported to be the major sources contributing to the eutrophication of the Baltic Sea. In this thesis, I describe how the sources and waterborne fluxes of nutrients in large river basins can be systematically assessed. LÄS MER
18. Constructed Wetlands and Deconstructed Discourses : Greenhouse gas fluxes and discourses on purifying capacities
Sammanfattning : This thesis is a study within the sciences ofconstructed wetlands. It has two sections. Section one is a natural scienrific study ofgas fluxes from construcred wetlands and section two is an analysis ofhow natural sciences describe constructed wetlands. LÄS MER
19. Industrial metabolism : The emerging landscape of heavy metal immission in Sweden
Sammanfattning : Since the turn of this century, technological development has drastically increased the industrial consumption of toxic metals. Once dispersed in the environment, the metals cannot be degraded but will be accumulated in soil or sediment sinks. Thus, environmental effects of heavy metal pollution tend to be permanent. LÄS MER
20. Interactions between metals and bacteria : Importance for metal speciation
Sammanfattning : The objective of this thesis is to contribute to the understanding of the interactions between metals and microorganisms with respect to* Toxicity of metals (Cd, Cu, Hg, Zn)* Mineralization of metal-organic complexes (citric acid, histidine)* Metal adsorption (Cs, Sr, Eu, Hg, Zn, As)Most of the studies were made on the gram-negative bacterium Klebsiella oxytoca, but the work also involved a Serratia as as well as mixed cultures of microorganisms from soil systems.Most previous studies, reported in the literature, on the toxic effects of metals on microorganisms have been performed at high nutrient levels, despite the fact that microorganisms in nature normally live under energy-limited conditions. LÄS MER
