The origin of cosmic rays remains one of the largest mysteries in astrophysics. Innovative and accurate radio measurements of cosmic rays and neutrinos with LOFAR promise to provide new answers. It is generally believed that ultra-high-energy cosmic rays are produced in...

Although it is much newer than orbital-based approaches, conceptual density functional theory (CDFT) has established itself as an important tool for understanding the properties and chemical reactivity of molecules and materials. Until now, CDFT has been mainly applied ...

Today, building vaults is no longer part of everyday building practice. However, for centuries vaults had been regarded as the ideal structure to span imposing spaces in cloisters, churches, cathedrals and palaces. Several studies have been devoted to the topic worldwid...