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Popular Abstract in Swedish Övergödning av hav, sjöar och vattendrag beror på att näringsämnen som bl.a. kväve och fosfor tillförs i sådana mängder att ekosystemen kommer i obalans. Tillförseln gynnar en riklig tillväxt av cyanobakterier, tång och sjögräs som sedan vid sin död bryts ner av mikroorganismer som konsumerar syret som finns i vattnet. När syrefria förhållanden har uppstått gynnas andraSome of the main factors affecting the biological removal of nutrients in wastewater treatment plants have been investigated. The influence of low concentrations of dissolved oxygen and the redox potential on the denitrification, activity of activated sludge was studied in batchwise experiments. Oxygen was found to have a negative effect on denitrification even when present at concentrations lower

This study shows how locally observed geomagnetic disturbances can bepredicted from solar wind data with artificial neural network (ANN)techniques. After subtraction of a secularly varying base level, thehorizontal components X_Sq and Y_Sq of the quiettime daily variations are modeled with radial basis function networkstaking into account seasonal and solar activity modulations

In this work, we present implementation and experiment of the theory of dynamic force sensing for robotic manipulators, which uses a sensor fusion technique in order to extract the contact force exerted by the end-effector of the manipulator from those measured by a wrist force sensor, which are corrupted by the inertial forces on the end-effector. We propose a new control strategy based on multis

Abstract not available

This document Developing Emission Scenarios to aid Air Pollution Prevention and Control: A guideline manual for RAPIDC in South Asia has been written as a general introduction to the generation and utilisation of scenarios in a specific context. That context encompasses deliberate action to reduce the generation and impacts of air pollution. Thus, the work is intended to support the implementation

Abstract is not available

While the effects of elevated atmospheric CO2 level on starch and sugar metabolism have been extensively studied in different plants, the effect on plant lipid metabolism concerns only a few studies and none of these are on the model plant Arabidopsis thaliana. This study of the lipid composition in seeds and leaves of A. thaliana is therefore of interest when trying to predict how the future envi

Hur behåller man hälsan som lärare? Vad händer i mötet mellan politiska ambitioner och kommunal skolverklighet? Hur påverkar den ordlösa kommunikationen stämningen i klassrummet? Vad händer när mätbar kunskap blir viktigare än användbar kunskap? Kan man vara nöjd som lärare men missnöjd som anställd? Skolan har blivit en ideologisk ”het potatis” som väcker engagemang, både inom och utom skolans v