Online First

230Th/234U chronometry on micro-scale particles is an emerging capability in nuclear safeguards that enables verification of past and present activities at nuclear facilities for consistency with national and international declarations. The implementation of 230Th/234U chronometry by large-geometry secondary ion mass spectrometry (LG-SIMS) requires well-characterised reference materials to quantify inter-element fractionation (Th/U relative sensitivity factor, RSF) at relevant abundance levels. [...]

The brain contains an astronomical number of neurons, but it is their collective activity that underlies brain function. The number of degrees of freedom that this activity explores (its dimensionality) is therefore a fundamental signature of neural dynamics. [...]

Artificial intelligence (AI) has become an increasingly prominent force in medicine, driven by rapid technical advances and a growing number of clinical applications. As the field matures, it now increasingly moves from experimental development toward a phase of broader implementation. [...]