An analysis of the FIR/RADIO Continuum Correlation in the Small Magellanic Cloud

The local correlation between far-infrared (FIR) emission and radio-continuum (RC) emission for the Small Magellanic Cloud (SMC) is investigated over scales from 3 kpc to 0.01 kpc. Here, we report good FIR/RC correlation down to ~15 pc. The reciprocal slope of the FIR/RC emission correlation (RC/FIR) in the SMC is shown to be greatest in the most active star forming regions with a power law slope of ~1.14 indicating that the RC emission increases faster than the FIR emission. The slope of the other regions and the SMC are much flatter and in the range of 0.63-0.85. The slopes tend to follow the thermal fractions of the regions which range from 0.5 to 0.95. The thermal fraction of the RC emission alone can provide the expected FIR/RC correlation. The results are consistent with a common source for ultraviolet (UV) photons heating dust and Cosmic Ray electrons (CRe-s) diffusing away from the star forming regions. Since the CRe-s appear to escape the SMC so readily, the results here may not provide support for coupling between the local gas density and the magnetic field intensity.Comment: 19 pages, 7 Figure

Analysis of shared heritability in common disorders of the brain

Paroxysmal Cerebral Disorder

On the sigma-nucleon interaction

Contains fulltext : mmubn000001_190174072.pdf (publisher's version ) (Open Access)Promotor : J. de Swart109 p

An automated ECG system in a large hospital: coding, storage and retrieval of tracings

This paper describes an automated ECG-system as it is used in the 1000-bed University Hospital Utrecht, The Netherlands. The system involves a "hybride" approach, combining computer analysis of the ECG by means of the Pipberger program with the reading by a cardiologist via a specially developed coding system. Up until now (since January 1, 1972) 35,000 ECGs have been handled systematically at a rate of approximately 100 ECGs per working day. All the ECGs, together with the ECG-diagnoses and other relevant data of the patient are stored and can be retrieved whenever wanted. The system enables comparison of computer analysis and cardiologist's reading of the ECG. The boundary between reliable computer analysis and the necessity of human reading and verification lies with the normal ECGs. This apparently meagre result of the computer ECG-analysis for hospital use is, however, a great achievement for its use in epidemiological studies

Een geautomatiseerd ECG-systeem

De automatische verwerking van elektrocardiogrammen, respectievelijk de automatisering van de elektrocardiografie begint - ondanks veel aanvankelijke weerstanden - op een aantal plaatsen in ons land vorm te krijgen. Hoewel een nationale aanpak onzes inziens nog steeds de voorkeur zou verdienen (MEIJLER 1970), lijkt het van belang een lokaal systeem te beschrijven dat wellicht als voorbeeld kan dienen van de automatisering van de elektrocardiografie in een, naar de maatstaven van ons land, groot ziekenhuis. Het hier te beschrijven systeem kan eventueel model staan voor een groter systeem in regionaal of nationa al verband; het bevat daarvoor alle benodigde elementen. Het doel van dit artikel is aan te tonen dat een groot geautomatiseerd ECG-systeem metterdaad mogelijk is. Voorts lijkt het gewenst dat in bredere kringen bekend wordt hoever de automatisering van de elektrocardiografie is voortgeschreden en over welke mogelijkheden we thans reeds beschikken

Observational Signatures of Particle Acceleration in Supernova Remnants

We evaluate the current status of supernova remnants as the sources of Galactic cosmic rays. We summarize observations of supernova remnants, covering the whole electromagnetic spectrum and describe what these obser- vations tell us about the acceleration processes by high Mach number shock fronts. We discuss the shock modification by cosmic rays, the shape and maximum energy of the cosmic-ray spectrum and the total energy budget of cosmic rays in and surrounding supernova remnants. Additionally, we discuss problems with supernova remnants as main sources of Galactic cosmic rays, as well as alternative sources.Comment: Accepted for publication by Space Science Reviews, 81 page