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Quasiparticle broadening in insulating copper oxides

We calculate the spectral function of the half-filled two-dimensional Hubbard model with realistic hopping integrals for Sr2CuO2Cl2 within the dynamical mean-field theory at finite temperatures. It is shown that precursor effects of incommensurate spin dynamics lead to an incoherent broadening of the quasiparticle peaks on an energy scale that depends on local spin order. This might serve as an in

Climate change and floods in northern basins

Two different rainfall-runoff models are applied to river basins in northern Sweden and Finland to study the effect of changed climate on peak flows. Hypothetical meteorological data series are constructed by increasing observed values by given amounts and fractions. In a Swedish moderately large basin snowmelt and daily precipitation were considered, and in two small Finnish basins, hourly precip

Rörlig bild som metod för dialog i arbetslivet

Avsikten med denna rapport är att presentera delresultat från forskningsprojektet "Dynamisk Beskrivning med Datorstödd Bild" (DBDB). I projektet arbetar psykologer, arkitekter och arbetsmiljötekniker med att utveckla och utvärdera dels tredimensionella rörliga bilder (verklighetstrogen animering) och simulering på dator, dels en beteendevetenskaplig metod och samarbetsform. Syftet är att skapa för

Iterative Joint Channel Estimation and Multiuser Detection for Wireless MIMO-OFDM Systems: Performance in a Real Indoor Scenario

An iterative receiver for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) wireless systems is presented and tested on channel measurements from a real indoor scenario. The receiver jointly performs channel estimation and multiuser detection, with soft information iteratively provided by the singleuser decoders. Results for the performance are presented in te

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Popular Abstract in German n/a[abstract missing]

Nutritional and physicochemical characterisation of dietary fibre in wheat fractions

Popular Abstract in Swedish Arbetet visar att restprodukter från fraktionering av vete är rika på kostfiber med olika funktionella och nutritionella egenskaper. Biprodukterna används för närvarande inte för vidare exploatering utan har endast användning som djurfoder. Ett ökat intag av kostfiber är önskvärt ur folkhälsosynpunkt, och det kommersiella värdet av restprodukterna skulle öka betydligt oDietary fibre is fermented in the colon to short-chain fatty acids (SCFAs), of which especially butyric and propionic acid may have health-promoting effects. One source of dietary fibre may be by-products from wheat, which are currently used as animal feed. The aim of the work presented in this thesis was to perform physicochemical and nutritional characterisation of dietary fibre in waste fractio