National Nuclear Energy Commission

TL;DR: In this article, the synthesis of hydroxyapatite and tricalcium phosphate nanocrystalline powders was investigated in order to obtain materials with optical properties and appropriate size for sunscreen.

TL;DR: In this paper, an analytical method for the determination of traces of rare earth elements (REE) as impurities in high pure lanthanum oxide (La2O3) produced in the Instituto de Pesquisas Energeticas e Nucleares (IPEN) and compared with the oxide of commercial Lanthanum as a certified reference is discussed.

TL;DR: In this paper, the effect of gamma radiation on green tea irradiated with different water activities was studied and it was observed that the greater the amount of free water present in the samples, lower was the dose to achieve microbiological control.

TL;DR: Porphyrin-doped carbon nanotubes in NaDDBS/carbon nanotube aqueous dispersions were obtained from photoluminescence maps as mentioned in this paper, where power-law scaling of exciton binding energies and environmental dielectric screening effects were used to infer the doping.

TL;DR: In this paper, a new method to study the ethanol oxidation reaction in a functional fuel cell adapting the single cell on an ATR-FTIR accessory was presented. But it was not shown that the increment of power density with the temperature increase in the Pt/C anode fuel cell favors the acetaldehyde production.