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A strategy for control of the glucose feed rate in cultivationsof E.coli is discussed. By making probing pulses in the feed rate it is possible to detect and avoid a characteristic saturation linked to undesirable by-product formation. A simplification of a previous algorithm is presented and analyzed.

This thesis presents my research journey in the Department of Chemical Physics,Lund University. Multidimensional fluorescence polarization imaging is used to study single LH2s. The method uses linearly polarized excitation light and the emission is detected through a polarizer. The multidimensionality is achieved by rotating the excitation and detection polarizations which enables the construction

Pheromones are intraspecific chemical signals serving as a ubiquitous form of communication, particularly among insects. Female sex-pheromone signals act as the core constituent in the specialized odour-mediated moth mate-recognition system. Female moths typically release multicomponent mixtures of alcohols, aldehydes or acetates. The biosynthetic machinery controlling pheromone production compris

Abstract is not available

Popular Abstract in Swedish Intresset för biobränsle som en alternativ energiresurs har ökat eftersom utsläppen av CO2, NOx och SO2 bör sänkas. Användningen av biobränsle i en trycksatt fluidiserad bädd förbrännare/förgasare är därför en teknik som är lovande. En fluidiserad bädd har en rad fördelar såsom effektiv värmeöverföring, bränsleflexibilitet och låg förbränningstemperatur. Trots sina fördIncreasing awareness of the need of reducing CO2, NOx and SOx emissions from combustion systems has led to a strong interest in biomass as a fuel source. Using it in combination with fluidised bed combustion technology can lead to a lowering of NOx emissions to the atmosphere. However, this is not a problem-free technique, since the flue gas can contain ammonia, NOx and tar. The fluidised bed can

We present the results of realistic N-body modelling of massive star clusters in the Magellanic Clouds, aimed at investigating a dynamical origin for the radius-age trend observed in these systems. We find that stellar-mass black holes, formed in the supernova explosions of the most massive cluster stars, can constitute a dynamically important population. If a significant ensemble is retained (her

As a first step towards synthesis of speaker age the hypothesis that spectral cues may be more important for age perception than F0 and duration was tested in a pilot listening experiment with male speaker stimuli consisting of natural, synthesized and resynthesized isolated words. Results indicate that spectral information is dominant over pitch as cues for age. Slow speech rate also seems to be