The distribution of the species of the genus Deroceras Rafinesque, 1820 in Belgium (Gastropoda, Pulmonata, Agriolimacidae)

Four species belonging to the genus Deroceras are known from Belgium: D. reticulatum /MÜLLER, 1774/, D. laeve /MÜLLER, 1774/, D. caruanae /POLLONERA, 1891/ and D. agreste /LINNAEUS, 1758/. The distribution of D. reticulatum, P. laeve and D. caruanae as known at the end of 1971 is compared with a map showing all records of landsnail species in Belgium till then. A similar comparison is given for the year 1982. From the period 1972-1982 year to year maps- showing all records of each of these three Deroceras species are compared with a corresponding map compiling all landsnail records of the same year. At present P.reticulatum,D.laeve and D. caruanae are very widespread and common. D. caruanae was found for the first time in Belgium in 1968. As shown by means of a series of cumulative maps, D. caruanae became very rapidly widespread /1973 onwards/ presenting an explosive dispersal. Undoubtedly,man assisted in its introduction and dispersal. P. agreste seems to be very rare in Belgium with a limited number of local populations in the four southern provinces

Opioid prescriptions in patients with osteoarthritis: a population-based cohort study

OBJECTIVES: To examine the incidence, prevalence and trends for opioid prescriptions in patients with OA. Furthermore, types of opioids prescribed and long-term prescription rates were examined. Finally, the patient characteristics associated with the prescription of opioids wer

Over de relatie tussen rekenmodellen de beleidscontext en de visserijpraktijk: LNV Bestek Ond/2002-1/6C/01 Verbetering rekenmodel voor visquota

LNV Bestek Ond/2002-1/6C/01 Verbeteringrekenmodel voor visquota beoogt de zekerstelling van de technische en politieke bruikbaarheid van het gekozen rekenmodel voor de bepaling van TACs en quota in het Gemeenschappelijk Visserij Beleid. Het tweejarig onderzoekprogramma (2002/2003) is geformuleerd naar aanleiding van een aantal kennisvragen bij de Directie Vis van LNV met betrekking tot de onderbouwing van aan het rekenmodel ten grondslag liggende aannames, effecten van onzekerheden in parameterschattingen, mogelijke verbeteringen en alternatieve beleidsopties. Hiertoe zijn de kennisvragen vertaald in een viertal onderzoeksvragen, waarover afzonderlijk gerapporteerd zal worden. Dit rapport (product 2) heeft betrekking op onderzoeksvraag 2, ‘Wat is de relatie tussen de rekenmodellen en de beleidscontext en visserijpraktijk en hoe worden zij wederzijds beïnvloed?’ en dient als achtergronddocument voor de meer specifieke vragen die in de overige deelonderzoeken aan de orde zullen komen

Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy Diagnostic Task Force Criteria Impact of New Task Force Criteria

Background-Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy (ARVD/C) Diagnostic Task Force Criteria (TFC) proposed in 1994 are highly specific but lack sensitivity. A new international task force modified criteria to improve diagnostic yield. A comparison of diagnosis by 1994 TFC versus newly proposed criteria in 3 patient groups was conducted. Methods and Results-In new TFC, scoring by major and minor criteria is maintained. Structural abnormalities are quantified and TFC highly specific for ARVD/C upgraded to major. Furthermore, new criteria are added: terminal activation duration of QRS ≥55 ms, ventricular tachycardia with left bundle-branch block morphology and superior axis, and genetic criteria. Three groups were studied: (1) 105 patients with proven ARVD/C according to 1994 TFC, (2) 89 of their family members, and (3) 39 patients with probable ARVD/C (ie, 3 points by 1994 TFC). All were screened for pathogenic mutations in desmosomal genes. Three ARVD/C patients did not meet the new sharpened criteria on structural abnormalities and thereby did not fulfill new TFC. In 62 of 105 patients with proven ARVD/C, mutations were found: 58 in the gene encoding Plakophilin2 (PKP2), 3 in Desmoglein2, 3 in Desmocollin2, and 1 in Desmoplakin. Three patients had bigenic involvement. Ten additional relatives (11%) fulfilled new TFC: 9 (90%) were female, and all carried PKP2 mutations. No rel

Ginzburg-Landau theory of vortices in a multi-gap superconductor

The Ginzburg-Landau functional for a two-gap superconductor is derived within the weak-coupling BCS model. The two-gap Ginzburg-Landau theory is, then, applied to investigate various magnetic properties of MgB2 including an upturn temperature dependence of the transverse upper critical field and a core structure of an isolated vortex. Orientation of vortex lattice relative to crystallographic axes is studied for magnetic fields parallel to the c-axis. A peculiar 30-degree rotation of the vortex lattice with increasing strength of an applied field observed by neutron scattering is attributed to the multi-gap nature of superconductivity in MgB2.Comment: 11 page

Samenvatting en evaluatie van het onderzoeksprogramma Bestek 6c, Verbetering rekenmodel voor visquota

De doelstellingen van het tweejarig onderzoeksprogramma Bestek Ond/2002-1/6C/01 Verbetering rekenmodel voor visquota (maart 2002 – oktober 2004, verder bestek 6c genoemd) zijn enerzijds een evaluatie van de technische en politieke bruikbaarheid van het rekenmodel voor de bepaling van TAC’s in het Gemeenschappelijk Visserij Beleid, en anderzijds een exploratie naar de mogelijkheid om TAC’s voor meerdere soorten tegelijk vast te stellen