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Upper Cambrian trilobite biostratigraphy and taphonomy at Kakeled on Kinnekulle, Vastergotland, Sweden

A section through the Upper Cambrian black shales and limestones at Kakeled on Kinnekulle, Vastergotland, Sweden, extends from the lower-middle part of the Agnostus pisiformis Zone into the Peltura scarabaeoides Zone. Fossils are usually preserved only in the stinkstones, but in the A. pisiformis Zone trilobites can be found also in the shales. Lithologically, the stinkstones can be subdivided int

Band-terminating states in Ag-101

Excited states of the neutron deficient Ag-101 nucleus have been investigated via the Cr-50(Ni-58, 3rho1alpha) heavy-ion induced reaction at 261 meV by use of in-beam spectroscopic methods. On the basis of the measured gammagamma-cincidence relations and angular distribution ratios high-spin bands have been extended up to I-pi = 35/2(+), 45/2((-)) and (49/2(-)). The negative parity states at the h

Soil microfungi in three Swedish coniferous forests

Microfungi were isolated by the soil washing technique from 5 soil horizons in each of 3 podzolic coniferous forests: Picea abies at Kongalund, S. Sweden, Pinus sylvestris at Ivantjarnsheden and P. abies/P. sylvestris at Nickobacken (both central Sweden). A total of 126 species was identified, of which 45 were found at 3, and 24 at 2 of the sites. Mortierella and Penicillium were the commonest gen

Acupuncture for chronic low back pain: a randomized placebo-controlled study with long-term follow-up.

OBJECTIVE: The authors sought to determine whether a series of needle acupuncture treatments produced long-term relief of chronic low back pain. DESIGN: A blinded placebo-controlled study with an independent observer. The patients were randomized to receive manual acupuncture, electroacupuncture, or active placebo (mock transcutaneous electrical nerve stimulation). Subjects were examined and monit

Acute changes in cerebral oxygenation and cerebral blood volume in preterm infants during surfactant treatment

Following administration of surfactant a marked depression in aEEG activity occurs for about 10 minutes; the mechanism of this depression is unknown. In view of this, twenty-nine preterm infants were investigated with near infrared spectroscopy (NIRS) to evaluate rapid changes in total cerebral haemoglobin concentration and cerebral oxyhaemoglobin concentration during rescue treatment with natural

X-ray-emission-threshold-electron coincidence spectroscopy

Using a penetration-field threshold photoelectron (TPE) analyzer and efficient photon detectors X-ray-emission-threshold-electron coincidence (XETECO) spectroscopy has been developed to a point where peak shape analysis becomes meaningful. The spectra can, on the present level of accuracy, be interpreted as conventional TPE spectra free from post collision interaction effects. For the neon atom an

Att berätta i tid och rum : människans unika värde och dess upplösning i Dostoevskijs och Petrusevskajas berättarkonst

Taking Fëdor Dostoevskij’s and Ljudmila Petrusevskaja’s writings as its starting point, this dissertation explores two different forms of disintegration of worth. In both cases, a world is described where human beings have lost contact with a unique centre of worth – a position in space linked to an irrevocable course of events in time. In Dostoevskij, this disintegration takes place on the level

Ad Hoc quality of service multicast routing

The conceptual shift in the expectations of the wireless users from voice towards multimedia, from availability towards acceptable quality, and from stand-alone towards group-oriented computing has a significant impact on today's networks in terms of the need for mobility, quality of service (QoS) and multicasting. Ad hoc networks, being independent of any fixed infrastructure, can provide mobile

Multiconfiguration Dirac-Hartree-Fock calculations for intercombination lines in silicon-like ions

This paper reports on multiconfiguration Dirac-Hartree-Fock calculations for intercombination lines in highly charged silicon-like ions. Results for wavelengths, fine structure, transition rates, branching ratios and lifetimes are reported and compared with other theories and experiments. A review of the experimental situation is presented, and deviations from expected smooth trends along the sequ

Refinement of the automated method for human islet isolation and presentation of a closed system for in vitro islet culture

Background. The procedure of human islet isolation needs further optimization and standardization. Here, we describe techniques to enhance enzymatic digestion and minimize mechanical forces during the digestion process. The isolation protocol has also been modified to meet current GMP (cGMP) standards. Moreover, the impact of donor- and process-related factors was correlated to the use of islets f

Effects of high intensity focused ultrasound on the intervertebral disc

Popular Abstract in Swedish Ultraljud brukar oftast förknippas med diagnostiska metoder såsom fosterdiagnostik men kan även användas för terapeutisk behandling. Terapeutiskt ultraljud bygger på att ljudet absorberas i vävnaden och därigenom ger upphov till en ökad temperatur. Temperaturökningen är beroende av ultraljudets intensitet samt ultraljudsabsorptionen i den aktuella vävnaden. Genom att foThe purpose of this study was to study and try to optimise high intensity focused ultrasound treatment of the intervertebral disc. We demonstrated that it was possible to heat intervertebral discs with HIFU delivered by 50 or 5 mm diameter ultrasound transducers. Finite element studies indicated that it would be possible to heat the disc to a temperature of 65ºC or above through an extradiscal m

Dynamical random graphs with memory

We study the large-time dynamics of a Markov process whose states are finite but unbounded graphs. The number of vertices is described by a supercritical branching process, and the edges follow a certain mean-field dynamics determined by the rates of appending and deleting: the older an edge is, the lesser is the probability that it is still in the graph. The lifetime of any edge is distributed ex