Search results

Filter

Filetype

Your search for "*" yielded 531112 hits

Non-Hodgkin's lymphoma in systemic lupus erythematosus

Background: Recent evidence supports an association between systemic lupus erythematosus (SLE) and non-Hodgkin's lymphoma (NHL). Objectives: To describe demographic factors, subtypes, and survival of patients with SLE who develop NHL. Methods: A multi-site cohort of 9547 subjects with definite SLE was assembled. Subjects at each centre were linked to regional tumour registries to determine cancer

Hyades dynamics from N-body simulations: Accuracy of astrometric radial velocities from Hipparcos

The internal velocity structure in the Hyades cluster as seen byHipparcos is compared with realistic N-body simulations using the NBODY6code, which includes binary interaction, stellar evolution and theGalactic tidal field. The model allows to estimate reliably the accuracyof astrometric radial velocities in the Hyades as derived by Lindegrenet al. (cite{lindegren00}) and Madsen et al. (cite{madse

Effect of fly ash on the microstructure of cement mortar

A microstructural study of mortars prepared with a low-alkali, low-C3A cement and a Class F fly ash, both of Swedish origin, was carried out using the scanning electron microscopy - energy-dispersive X-ray analytical technique. Supplementary phase analyses were made by X-ray diffraction and thermogravimetry -differential thermal analysis. Normally, CH crystals in the transition zone grow with thei

VOn (n >= 3) defects in irradiated and heat-treated silicon

Local vibrational mode (LVM) spectroscopy has been used to study the evolution of vacancy-oxygen-related defects (VOn) in the temperature range 300-700 degrees C in carbon-lean Cz-Si samples irradiated with MeV electrons or neutrons. New experimental data confirming an attribution of the absorption bands at 910, 976 and 1105 cm(-1) to the VO3 complex are obtained. In particular, a correlated gener

Successful Swedish headmasters in tension fields and alliances

What makes a headmaster successful? And what does a successful headmaster do? This article presents some results from a research project – Successful school leadership in different school cultures – that aims to provide answers to these questions. The results derive from interviews, questionnaires, observations and pupils’ essays, and comprise the criteria by which different parties involved in sc

Öresundsregion - bli till! : De geografiska visionernas diskursiva rytm

Popular Abstract in Swedish Avhandlingens syfte är att kartlägga och analysera hur geografiska visioner utgjort diskursiva redskap i en specifik framtidsorienterad process, institutionaliseringen av Öresundsregionen.This thesis is about how geographical visions worked as discursive tools in the institutionalisation of the Öresund Region. The geographical vision is defined as a cognitive set of imagined and material pictures of the future structured as a spatial whole. The geographical vision is, in addition to this, a spaceconfiguration-, power-, and disciplinary - instrument, and, the product of a discursiv

Neuronal plasticity and dendritic spines: effect of environmental enrichment on intact and postischemic rat brain.

The authors compared the influence of environmental enrichment on intact and lesioned brain, and tested the hypothesis that postischemic exposure to an enriched environment can alter dendritic spine density in pyramidal neurons contralateral to a cortical infarct. The middle cerebral artery was occluded distal to the striatal branches in spontaneously hypertensive rats postoperatively housed eithe

Impact of natural and artificial UVB radiation on motility and growth rate of marine dinoflagellates

The growth rates and motility of dinoflagellates were studied in the field in the presence or absence of UVB radiation, as well as in the laboratory under artificial radiation conditions. Photosynthetically active radiation (PAR, 400–700 nm) and UVB radiation showed large variations due to cloud cover and seasonal changes in natural daylight. In Swedish coastal water, UVB radiation was attenuated

DT-kolografi i stället för koloskopi. Ny datortomografisk metod vid misstänkt kolonpolyp eller malign tumör

Datortomografi av kolon (DT-kolografi) är en ny tillämpning av datortomografi, som gör det möjligt att med hög diagnostisk säkerhet upptäcka tumörer och polyper större än 10 mm. Metoden medför mindre obehag och smärta än koloskopi och kolonröntgen. Behovet av tarmrengöring är dock detsamma. DT-kolografi kan, som initial undersökning vid misstanke om maligna förändringar eller kolonpolyper, komma a