Polycrystalline samples of CuIn3Se5 have been synthesized by reaction of stoichiometric mixture of the constituents in evacuated quartz ampoules, in a vertical furnace and in an horizontal one. The composition has been studied by EDAX and Atomic Absorption Spectroscopy. Important deviations in composition have been measured. The structure has been analyzed by X-ray Powder Diffraction, existing mainly single phase. Two spatial groups (SG) have been attributed to CuIn3Se5 by the Rietveld refinement: I 4̄2m (Stannitetype structure) and P 4̄2c (P-chalcopyrite). However, only the refinement in the SG P 4̄2c provides occupation numbers in the lattice that are coherent with the composition determined by EDAX. The discrepancy index, especially the goodness of fit, are smaller for the SG P 4̄2c.

ABSTRACT. This study aimed to test the hypotheses that frustration and low social status are associated with increased levels of self-aggression (SA) in stumptailed macaques. SA was more frequent when adult macaques observed from an adjacent cage while a companion was being tested on a memory task than when they themselves were tested. Watching a companion being fed by a human also caused SA to increase when subjects were alone, but not when they were with another partner. Overall, the subject of intermediate dominance rank appeared the most prone to bouts of SA. The results are discussed with reference to the role of frustration and social status in SA, and it is concluded that social housing with compatible partners can reduce this abnormal behaviour.

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