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For everyday use and special occasions : a multi-analytical study of pottery from two early neolithic funnel beaker (TRB) sites on the island of Öland, SE Sweden

This paper presents results of technical, functional and stylistic analyses on pottery from two Early Neolithic sites on Öland – Resmo and Runsbäck. Analyses include thin sections and XRF of clays and wares, lipid residue analysis and recording of stylistic attributes. The two sites are situated 15 km apart on the west side of the island. C14 dates place the activities at the sites at c. 3900 3600

Small Phrase Layers: A study of Finnish Manner Adverbials

This monograph examines the structure and properties of Finnish manner adverbials. The central idea is that, instead of AdvPs, DPs, APs, PPs, NumPs and InfinitivalPs, manner adverbials have the form of either kPs or pPs, and they are licensed as unique specifiers of a manner-related small vP. Secondly, because ”obligatory” and ”optional” manner adverbials are merged as specifiers of one and the sa

Optimisation and Validation of Dynamic Susceptibility Contrast MRI Perfusion Measurements

Popular Abstract in Swedish Med magnetkamera (magnetresonans, MR) kan utmärkt morfologisk information erhållas men tekniken är även användbar för funktionella studier. En funktionell tillämpning är att mäta perfusion (kapillära blodflöden). Perfusionsrelaterad information kan åskådliggöras på flera sätt med MR, ofta via signalförändringar orsakade av spårämnen eller kontrastmedel i blodet. Den teThe studies presented in this thesis concern the optimisation and evaluation of the dynamic susceptibility contrast magnetic resonance imaging (DSC-MRI) technique for the assessment of perfusion-related parameters of the brain, such as cerebral blood flow (CBF), cerebral blood volume (CBV) and mean transit time (MTT). Several methodological factors influence these measurements, for example, contra

Time-resolved laser spectroscopy on high-lying states in neutral oxygen

Radiative lifetimes have been measured for five triplet states of atomic oxygen. The oxygen atoms were generated by photodissociation of NO2 and the investigated states were populated through a two-step process involving a two-photon excitation to the lowest excited triplet state of even parity, 2p33p 3P, followed by a one-photon excitation to the investigated state. A similar scheme is applicable

Influence of Internal Diffusional Limitations on the Performance of an Immobilized Enzyme in Organic Medium

The influence of mass-transfer limitations on the performance of immobilized a-chymotrypsin operating in acetonitrile medium has been investigated. The enzyme was immobilized by deposition on various porous carrier materials such as celite, polyamides of different particle sizes, controlled-pore glasses, polypropylene or polyacrylamides. When carrying out kinetically controlled peptide synthesis r

The (misconceived) distinction between internal and external validity

Researchers often aim to make correct inferences both about that which is actually studied (internal validity) and about what the results generalize to (external validity). The language of internal and external validity is not used by everyone, but many of us would agree that intuitively the distinction makes a lot of sense. Two claims are commonly made with respect to internal and external validi

Large Eddy Simulation of Complex Turbulent Flows

This thesis concerns the Large Eddy Simulation methodology and its application to predict complex turbulent flows at high Reynolds numbers, and at times also with high Mach numbers. The meaning of the word ?complex? refers both to the presence of complex flow phenomena and the, often, complex geometry of man-made devices restricting the flow. A fairly thorough evaluation study of the numerical met

Investigation of the Early Flame Development in Spark Assisted HCCI Combustion Using High Speed Chemiluminescence Imaging

Auto-ignition with SI-compression ratio can be achieved by replacing some of the fresh charge by hot residuals. In this work an engine is run with a negative valve overlap (NVO) trapping hot residuals. By increasing the NVO, thus raising the initial charge temperature it is possible to investigate the intermediate zone between SI and HCCI as the amount of residuals is increased. Recent research ha

List sequence turbo decoding techniques

An algorithm for decoding turbo codes that combines conventional turbo decoding and list sequence (LS) maximum a posteriori probability (MAP) decoding is presented and evaluated. Compared to previous results on this theme, a reduction in the order of 0.7 dB of the signal-to-noise ratio (SNR) is obtained for turbo codes with 514-bit pseudo-random interleaving at frame error rate (FER) 10-4