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Efficient Conversion of Lignocellulose Hydrolysates- Yeast Tolerance and Redox Metabolism

The fermentation of lignocellulose hydrolysates by Saccharomyces cerevisiae for ethanol production was investigated. An important problem for the successful conversion of these hydrolysates is that they often are inhibitory. The physiological effect of the furan inhibitors 5-hydroxymethyl furfural (HMF) and furfural were therefore studied, and based on the results novel strains were constructed. A

Kontextualisering av metallhantverk på landsbygden - arkeometallurgi och landskapsstudiemetodik

The research project "Exclusive metalworking in rural settings" was instigated in 2013 with funding from Berit Wallenbergs foundation. The projects objective is to survey sites housing remains of multimetal craftsmanship of the late Iron Age and medieval periods outside urban contexts. This article aims to contextualize preliminary results from the project by evaluating its chosen source material

Power swing damping in Iceland based on phasor measurements

Phasor measurement signals are used as only input to a wide-area power system stabilizer to increase interarea mode damping of the Icelandic system. Modal analysis and time simulations of a detailed model show that frequency difference as PSS input gives a damping improvement that is robust to drastic changes in system topology. Field data from phasor measurement units indicate high signal quality

Electrophysiological properties of parallel fiber synapses in vivo

In vitro studies have revealed intriguing properties of parallel fiber synaptic transmisson. Most notably, these synapses have been shown to induce highly variable synaptic responses, have a pronounced paired pulse facilitation and to induce later, variable synaptic responses in their target neurons. In the present study, whole cell recordings from stellate cells and basket cells were made to eval

A Dipole Model for High Energy QCD

Popular Abstract in English This thesis considers a model of high energy particle collisions. The model is based on the so called BFKL formalism which is valid only at low x, that is collisions at very high energies, such as at the LHC. The intial state of the incoming particles are simulated by colour dipoles in transverse space evolved through rapidity. With this approach, all fluctuations are dThis thesis considers a model of high energy particle collisions. The model is based on the so called BFKL formalism which is valid only at low x, that is collisions at very high energies, such as at the LHC. The intial state of the incoming particles are simulated by colour dipoles in transverse space evolved through rapidity. With this approach, all fluctuations are dynamically described, allowi

Ecology of zooplankton communities: climate, dormancy, and benthic-pelagic coupling

Popular Abstract in Swedish Hur påverkas djurplanktonsamhällen av klimatförändringar och vilken betydelse har vilostadier? Populärvetenskaplig sammanfattning av “Ecology of zooplankton communities: climate, dormancy and benthic-pelagic coupling”, doktorsavhandling i Limnologi vid Ekologiska institutionen, Lunds Universitet, 2003. Djurplankton är sjöars motsvarighet till betande kossor och de mikThis thesis describes how influences, such as top down and bottom up forces, shape zooplankton communities in shallow lakes. I have also extended the traditional food-web theory by investigating the effects of climate on total biomass, taxonomic composition, and temporal properties of zooplankton communities. A field experiment showed that the total biomass of both phytoplankton and zooplankton in

Studies of molecular systems with multiconfigurational methods

Research in theoretical chemistry is aimed at finding computational algorithms that produce as accurate results as possible, for as large molecules as possible, with a minimum of computational effort and to apply these methods to molecular systems of chemical interest. The most accurate theoretical methods, often referred to as ab initio methods, are derived from the fundamental laws of physics an