Sökning: "järn"
Visar resultat 1 - 5 av 129 avhandlingar innehållade ordet järn.
1. Järn i jorden : Spadformiga ämnesjärn i Mellannorrland
Sammanfattning : This thesis explores how the spade-shaped currency bars of central Norrland were used in different contexts and what significance they held. Spade-shaped currency bars give us a glimpse of a world-view different than our own where the intermediary form the bars represented bestowed upon them a much fuller significance than did their place in the production process. LÄS MER
2. Järn och jord : Bergsmän på 1700-talet = [Iron and land] : [mining peasants during the 18th century]
Sammanfattning : .... LÄS MER
3. Drivers of increasing iron concentrations in freshwaters
Sammanfattning : Iron (Fe) concentrations are increasing in freshwaters (lakes and streams) in Sweden, as well as in other regions in northern Europe. Together with increasing concentrations of organic matter, Fe is contributing to the ongoing browning of freshwaters, which may have serious ecological consequences and implications for ecosystem services. LÄS MER
4. Chemical Speciation of Sulfur and Metals in Biogas Reactors : Implications for Cobalt and Nickel Bio-uptake Processes
Sammanfattning : A balanced supply of micronutrients, including metals such as iron (Fe), cobalt (Co), and nickel (Ni), is required for the efficient and stable production of biogas. During biogas formation, the uptake of micronutrient metals by microorganisms is controlled by a complex network of biological and chemical reactions, in which reduced sulfur (S) compounds play a central role. LÄS MER
5. Chemisk afhandling om järnmalms proberande på våta vägen, med den vidtberömde philosophiske facultetens samtycke, til almänt ompröfvande framgifven af praeses ... Torb. Bergman ... samt respondens Anders Schedin, uplänning ... uti gustavianska lärosalen d. 24 maji 1777
Sammanfattning : .... LÄS MER
