Sökning: "FE"
Visar resultat 1 - 5 av 1157 avhandlingar innehållade ordet FE.
1. Hydrogeochemistry of Fe and Mn in small boreal catchments
Sammanfattning : It is suggested that the overall understanding of the general hydrogeochemistry of a region is best understood from a landscape perspective. If so, this can provide useful information when planning monitoring programmes and influence of human activity. LÄS MER
2. Interactions between Fe and organic matter and their impact on As(V) and P(V)
Sammanfattning : Iron (Fe) speciation is important for many biogeochemical processes. The high abundance and limited solubility of Fe(III) are responsible for the widespread occurrence of Fe(III) minerals in the environment. LÄS MER
3. Surface structure and catalytic activity of Pd and Fe oxide surfaces and thin films
Sammanfattning : The present work is devoted to atomic scale structural studies of the surfaces of model heterogeneous catalysts relevant to oxidation reactions. A novel approach using high-energy surface X-ray diffraction combined with mass-spectrometry measurements is employed to perform in situ structural characterization of Pd(100) and Pd(553) single crystal surfaces acting as catalysts in the process of CO oxidation under semirealistic conditions. LÄS MER
4. Thermal and stress induced gamma to epsilon martensitic transformations in Fe-Mn-Si shape memory alloys
Sammanfattning : .... LÄS MER
5. Landscape hydrogeochemistry of Fe, Mn, S and trace elements (As, Co, Pb) in a boreal stream network
Sammanfattning : The transport of elements by streams from headwater regions to the sea is influenced by landscape characteristics. This thesis focuses on the influence of landscape characteristics (e.g. LÄS MER