Combined cerebellar and bilateral cervical posterior spinal artery stroke demonstrated on MRI

Combined cerebellar and spinal ischemic stroke is a rare, critical condition. We report a patient with combined cerebellar and bilateral posterolateral cervical spinal cord infarction due to bilateral stenosis of the vertebral arteries. MRI is the method of choice for imaging this condition; diffusion-weighted imaging of the spinal cord gives reliable results

FEDSM2002-31407 SIMULATION OF OECD/NEA INTERNATIONAL STANDARD PROBLEM NO. 43 ON BORON MIXING TRANSIENTS IN A PRESSURIZED WATER REACTOR

ABSTRACT The International Standard Problem, ISP 43, was defined by the OECD/NEA and the US NRC for the validation of threedimensional Computational Fluid Dynamics (CFD) software. The underlying experiment was performed in the 2×4 Loop Facility of the University of Maryland, College Park, U.S.A (UMCP). The test facility is a scaled-down model of the Three Mile Island TMI-2 reactor with detailed reconstruction of the reactor pressure vessel (RPV). The ISP 43 experiments focussed on rapid boron dilution transients in the RPV cold leg and downcomer. The simulations of the ISP 43 were performed with the CFX-TASCflow software. Numerical errors were monitored by comparing results obtained with different higher order discretisation schemes. Uncertainties related to physical modelling, like buoyancy effects and reactor core models, were also investigated. The simulation results show good agreement with data and prove that CFD methods can be usefully applied to this class of nuclear reactor problems

Między wiarą a wiedzą. Zainteresowanie księcia Hieronima Floriana Radziwiłła naturą i medycyną

Without a doubt, prince Hieronim Florian Radziwiłł (1715–1760) belonged to a group of the most picturesque personalities of the north-eastern territories of the former Polish-Lithuanian Commonwealth. In the present article, an attempt has been made to present in more detail the collection of natural objects gathered by Hieronim Florian Radziwił which constituted, at least in part, a fragment of his wider collection of cabinet of curiosities; an attempt has also been made to present the prince’s interest in topics associated with medicine