Bøker utgitt av Mdpi AG

The year 2019 saw the centenary of Eddington's eclipse expeditions and the corroboration of Einstein's general relativity by gravitational lensing. To mark the occasion, a Special Issue of Universe has been dedicated to the theoretical aspects of strong gravitational lensing. The articles assembled in this volume contain original research and reviews and apply a variety of mathematical techniques that have been developed to study this effect, both in 3-space and in spacetime. These include: · Mathematical properties of the standard thin lens approximation, in particular caustics; · Optical geometry, the Gauss-Bonnet method and related approaches; · Lensing in the spacetime of general relativity and modified theories; black hole shadows.

This Special Issue is a collection of selected papers from the 3rd European Congress on Imaging Infection and Inflammation (www.nuclearmedicinediscovery.org/events.asp) and results of consensus sessions by major experts in the field including Nuclear Medicine physicians, Radiologists, Clinicians and microbiologists. The Journal of Clinical Medicine (JCM) provides an opportunity to publish data that were presented and discussed at the meeting in Rome in December 2019. One of the extremely important missions of this meeting was to present the recently published guidelines on diagnostic imaging of infections, and find a consensus agreement on some still controversial issues. With this in mind, the aim of the present Special Issue is to publish selected papers on: ¿ Overviews on published guidelines ¿ Review on recent development of diagnostic imaging of infections ¿ Consensus document on the use of FDG and WBC in infections ¿ Consensus document on the requirement for new radiopharmaceuticals for imaging bacteria