Skull base chordomas are rare primitive bone tumors developed at the expense of remnants embryonic notochord level clivus, characterized by invasive behavior local with possibility extension to neighbouring organs. The deep localization these and their proximity structures skull round a carcinological resection difficult if not impossible. Radiation therapy, both adjuvant surgery exclusive, is ...

Dense granular flows down inclines continue to defy understanding. However, the last three decades have witnessed progress in techniques and approaches that have moved the field closer to achieving ab initio predictions of practical relevance. Difficulties arise for three principal reasons. First, because granular flows dissipate mechanical energy on the particle scale, regions featuring a subs...

We focus on information and knowledge flows as social network processes in organizational contexts. Seeking and giving work-related information is distinguished from seeking and providing problem-solving help as knowledge flows. Hypotheses from the literature suggest that (perceived) accessibility, knowledge about the work-related skills of others, and knowledge about the functions that others ...