Radiotherapy has a universal and predictable mode of action, that is, a physical mode of action consisting of the deposit of a dose of energy in tissues. Tumour cell damage is proportional to the energy dose. However, the main limitation of radiotherapy is the lack of spatial control of the deposition of energy, that is, it penetrates the healthy tissues, damages them and renders unfeasible del...

Nanoparticulate zirconium tungstate prepared through hydrothermal methods was found to autohydrate under ambient conditions. This results in positive thermal expansion, limiting its usefulness for controlled thermal expansion composites. TEM and BET studies provided strong evidence that the cause of autohydration is a result of structural defects present in the nanoparticles, while kinetics are...

In the pursuit of a hydrogen economy, extensive research has been directed at developing acidic and alkaline fuel cells. Such cells often utilize platinum-based catalysts. These materials have studied extensively in conditions but not ones. This focus on systems creates marked knowledge gap, since recent studies indicate that carbon-supported platinum (Pt/C) electrocatalysts degrade more rapidl...