Renaissance of Topotactic Ion-Exchange for Functional Solids with Close Packed Structures.

Recently, many new, complex, functional oxides have been discovered with the surprising use of topotactic ion-exchange reactions on close-packed structures, such as found for wurtzite, rutile, perovskite, and other structure types. Despite a lack of apparent cation-diffusion pathways in these structure types, synthetic low-temperature transformations are possible with the interdiffusion and exchange of functional cations possessing ns stereoactive lone pairs (e. g.

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Based on the knowledge of the social determination of health, the challenge and the strategy of action to promote integrated public policies are posed, focusing on the concept of expanded health in territories where populations with high social exclusion prevail. For this purpose, the dialectic relationship between social classes, territories and health is considered. Based on the founding objectives of primary health care, the family health teams in the municipality of Petrópolis, state of Rio de Janeiro, Brazil, were trained to carry out a participatory rapid assessment related to the goals of the sustainable development objectives, in their areas of operation.