Recycled and Nickel- or Cobalt-Doped Lead Materials from Lead Acid Battery: Voltammetric and Spectroscopic Studies.

The active mass of the plates of aspent car battery with higher wear after an efficient desulfatization can be used as sources of a new electrode. This paper proposes the recycling of spent electrodes from a lead acid battery and the incorporation of NiO or Co3O4 contents by the melt-quenching method in order to enrich the electrochemical properties. The analysis of X-ray diffractograms indicates the gradual decrease in the sulfated crystalline phases, respectively, 4PbO·PbSO4 and PbO·PbSO4 phases, until their disappearance for higher dopant concentrations. Infrared (IR) spectra show a decreasing trend in the intensity of the bands corresponding to the sulfate ions and a conversion of [PbO3] pyramidal units into [PbO4] tetrahedral units by doping with high dopant levels, yielding to the apparition of the PbO2 crystalline phase. The observed electron paramagnetic resonance (EPR) spectra confirm three signals located on the gyromagnetic factor, g~2, 2.2 and 8 assigned to the nickel ions in higher oxidation states as well as the metallic nickel nanoparticles. This compositional evolution can be explained by considering a process of the drastic reduction in nickel ions from the superior oxidation states to metallic nickel. The linewidth and the intensity of the resonance lines situated at about g~2, 2.17, 4.22 and 7.8 are attributed to the Co+2 ions from the EPR data. The best reversibility of the cyclic voltammograms was highlighted for the samples with x = 10 mol% of NiO and 15 mol% of Co3O4, which are recommended as suitable in applications as new electrodes for the lead acid battery.

On being forgotten: Memory and forgetting serve as signals of interpersonal importance.

Our memories contain a wealth of social information-including details of past interactions, facts about others, and others' identities. Yet, human memory is imperfect, and we often find ourselves unable to recall such information in social interactions. Conversely, people routinely find themselves on the receiving end of others' memory failures; that is, people sometimes find themselves forgotten. Despite the apparent pervasiveness of such experiences, modern science possesses no explanatory framework for understanding the psychological impact of being forgotten in part or in whole. Here, we propose that evidence of memory in social interactions is a powerful signal of the subjective importance attached to an object of memory and that interpretation of such signals has important consequences for interpersonal relationships. We further proposed that attributional explanations for forgetting and that the closeness of the relationship between the people involved in forgetting might moderate the impact of being forgotten. We tested this framework in four studies examining the experience of being forgotten in daily life (Study 1), in experimentally controlled firsthand encounters (Study 2), and in third party perceptions of forgetting (Studies 3 and 4). Results converged to support our proposed framework as well as the moderating role of attribution. Surprisingly, we found no evidence supporting the moderating role of initial relationships closeness. These results advance a systematic model of an understudied but important phenomenon and suggest rich and varied avenues of additional exploration. (PsycINFO Database Record (c) 2019 APA, all rights reserved).