Future studies should aim at exploring uncharted crystal structures and innovative doping strategies to further elevate the capabilities of upconversion luminescence. Then, one might reasonably ask, “After all this time, can we still find new opportunities in upconversion materials?” The answer is, ...
Chronicle of King João I Again, in the sole volume of the Dictionary of Portuguese Language published by Academia Real das Sciencias de Lisboa [103], in the entry "Arvor" (also stated to be an ancient form of árvore) we find a reference to the use of 'tree' in the masculine in ...