Hastings’s Additivity Counterexample via Dvoretzky’s Theorem

The goal of this note is to show that Hastings’s counterexample to the additivity of minimal output von Neumann entropy can be readily deduced from a sharp version of Dvoretzky’s theorem.     

Zur Methode der Bleisuperoxydbestimmung

Ohne Zusammenfassung     

Distance-Regular (0,α)-Reguli

We introduce distance-regular (0,α)-reguli and show that they give rise to (0,α)-geometries with a distance-regular point graph. This generalises the SPG-reguli of Thas [14] and the strongly regular (α,β)-reguli of Hamilton and Mathon [9], which yield semipartial geometries and strongly regular (α,β)-geometries, respectively. We describe two infinite classes of examples, one of which is a generalisation of the well-known semipartial geometry T_n^*(B) arising from a Baer subspace PG(n, q) in PG(n, q²). Research Fellow supported by the Flemish Institute for the Promotion of Scientific and Technological Research in Industry (IWT), grant no. IWT/SB/13367/Tonesi Research assistant of the Fund for Scientific Research Flanders (FWO-Vlaanderen).     

Exploration of gold nanoparticle beams for matter wave interferometry

We investigate molecular beam methods for gold nanoparticles. They are based on electrospray, matrix assisted laser desorption and thermal laser desorption in combination with mass spectroscopy and multi-photon ionization. These techniques are analyzed with respect to their potential for coherent matter wave experiments.     

Untersuchung pharmazeutischer Präparate

Analytical and Bioanalytical Chemistry -     

Calibration services in the frame of accredited coagulation EQA schemes – Meeting the IVD directive

Organisers of external quality assurance programmes may, for various reasons, also manufacture in vitro diagnostic medical devices, or provide calibration services. This paper describes measures taken by a Swedish organiser to meet the requirements of the European Commission's directive 98/79/EC for a national calibration of prothrombin time. Quality management system requirements and interactions with coagulation experts are summarised.Presented at the Eurachem PT Workshop September 2005, Portorož, Slovenia