Agnostids afford the best means of correlating Cambrian strata, and they are widely used for intercontinental correlations. They are most common in open-marine deposits and reached a maximum diversity during the Middle and early Late Cambrian. About twenty species of agnostids are known from the Upper Cambrian of Scandinavia. Lotagnostus? mystacinus Tjernvik, 1953 is a rare agnostid from the Upper

Anti-HCV prevalence in treated hemophiliacs, their heterosexual partners, intravenous drug addicts and homosexual men was studied. In hemophiliacs and many of the intravenous drug addicts, greater than or equal to 2 sera drawn 1-18 or 1-17 years apart were available. Anti-HCV testing was performed by ELISA (Ortho). Among patients with severe and moderate hemophilia A, 87% (98/112) were positive fo

En pilotstudie som innefattade en frågeundersökning på några arbetsplatser och en fältstudie på en av dessa arbetsplatser genomförde's under vintern 1997/98. Studien hade som syfte att sammanlänka laboratorieresultat med resultat under verkliga arbetsförhållanden och att kartlägga problem för individer vid utomhusarbete vintertid. Frågeformulären besvarade's av 43 hamnarbetare, mast- och teletekniDésirée Gavhed, Kalev Kuklane, Eva Karlsson, Ingvar Holmér. A pilot study on work in the cold - questionnaire survey and field study. Arbetslivsrapport 1999:4. A pilot study regarding work in cold conditions was performed during the winter period 1997-1998. The study comprised two parts, a questionnaire survey and a set of field measurements. The purpose of the study was to link laboratory studies

Popular Abstract in Swedish Inom många olika fält hyllas dialogen. Det finns en stark och utbredd tro, främst i det västerländska samhället, att lyckas man bara upprätta en dialog kan man planera i samförstånd och lösa problem. Människor talar med varandra för att förstå, hjälpa varandra och för att skapa gemensamma värden och målsättningar. I studiet av samtal upptäcker man emellertid snabbt att In the spring of 1997 a group of parents of deaf and hearing-impaired children and representatives of a special school in the south of Sweden began to hold formally arranged meetings in order to start a “dialogue”. This particular form of collaboration became the focus of this study. The meetings lasted two to three hours and I attended seventeen of them. The transcriptions of those meetings form

A summary of a study covering both modelling and control of a drum boiler is presented. A systematic approach to the modelling problem - numerical modelbuilding - is introduced. This technique was applied to the modelling of the drum of the boiler. The dynamics of different order models were compared. The load disturbances were modelled from measurements as a stationary stochastic process with rat

The effects of intravenously infused CGRP on regional blood flows and vascular resistance in the upper respiratory tract, the middle ear, and the inner ear were studied in cats. CGRP caused a pronounced vasodilation and an increase in blood flow of the respiratory mucosa and structures of the middle ear. The substance did not affect the blood flows of the cochlea and the vestibular organ in the in

The aim of the first this work part of the EU-project, Trial I, was to evaluate and possibly improve the CEC image criteria for radiographic chest images. Chest images of healthy volunteers were acquired using different technique factors. The image criteria were used as a tool to discriminate between the different images. The technique factors were chosen so that the image quality would differ sli

This paper presents a novel event detector for implantable devices. The algorithm is based on a signal model which describes an event as a linear combination of basis functions. The linear combination involves two fundamental electrogram waveforms represented at different time scales. An efficient, low-complexity detector is developed using the dyadic wavelet transform with integer filter coeffici

This is the first report of the Twin Mom Study, an investigation. of three hypotheses concerning influences on maternal adjustment. These hypotheses concern the role of the marital and parent-child relationships in mediating genetic influences on maternal adjustment and on the importance of the mothers' marital partners as a specifiable source of influences on their adjustment not shared with thei

Recent research on life in extreme environments has shown that some microorganisms metabolize at extremely low temperatures in Arctic and Antarctic ice and permafrost. Here, we present kinetic data on CO2 and (CO2)-C-14 release from intact and C-14-glucose amended tundra soils (Barrow, Alaska) incubated for up to a year at 0 to -39 degrees C. The rate of CO2 production declined exponentially with

Nitric oxide (NO) synthesized within mammalian sinoatrial cells has been shown to participate in cholinergic control of heart rate (HR). However, it is not known whether NO synthesized within neurons plays a role in HR regulation. HR dynamics were measured in 24 wild-type (WT) mice and 24 mice in which the gene for neuronal NO synthase (nNOS) was absent (nNOS-/- mice). Mean HR and HR variability w

A formalism for the calculations of electron transport in multiterminal quantum systems is presented. The systems are described by tight-binding Hamiltonians. It is shown that by exploiting real-space Green's functions, a problem of the electron transport in a multiterminal system can be reformulated into a problem of the electron transport in an effective two-terminal system and can then be treat

Background. Plasma markers for intestinal ischemia have not proven to be accurate. The value of L-lactate is unclear. Experimental models based on open surgery confound the effects of surgical trauma with that of ischemia. The aim was to create an endovascular model for acute superior mesenteric artery thromboembolism, and then to study L-lactate and lactate dehydrogenase (LD) activity in plasma a

Question: How can we link genotypic, phenotypic, individual, population, and community levels of organization so as to illuminate general ecological and evolutionary processes and provide a framework for a quantitative, integrative evolutionary biology? Framework: We introduce an evolutionary framework that maps different levels of biological diversity onto one another. We provide (1) an overview