Construir cidade ou construir habitação: "Programa minha casa minha vida" no município de São Carlos

Implantado no Brasil pelo Governo Federal no ano de 2009, o Programa "Minha casa minha vida" (PMCMV), gerido pelo Ministério das Cidades e operacionalizado pela Caixa Econômica Federal (CEF), com recursos do Fundo de Arrendamento Residencial (FAR), visa a construção ou requalificação de empreendimentos habitacionais na forma de condomínios ou loteamentos.

Roberto Carlos e a identidade brasileira na canção

Roberto Carlos é, ao mesmo tempo, o mais popular e o mais rejeitado dos artistas brasileiros. Nosso artigo pretende compreender as raízes dessa contradição, compreendendo tanto a positividade e o valor de sua obra - buscando relativizar uma série de estigmas e preconceitos que rondam sua figura, demonstrando, por assim dizer, a legitimidade de sua coroa - quanto o lugar a partir de onde falam seus antagonistas, de modo a perceber o conjunto de interesses e posições envolvidas nesses juízos críticos.

Molecular dynamics of poly(Ethylene Glycol) intercalated in clay, studied using 13C solid-state NMR

In this study, Cross-Polarization Magic-angle Spinning CP/MAS, 2D Exchange, Centerband-Only Detection of Exchange (CODEX), and Separated-Local-Field (SLF) NMR experiments were used to study the molecular dynamics of poly(ethylene glycol) (PEG) inside Hectorite/PEG intercalation compounds in both single- and double-layer configurations. The results revealed that the overall amplitude of the motions of the PEG chain in the single-layer configuration is considerably smaller than that observed for the double-layer intercalation compound. This result indicates that the effect of having the polymer chain interacting with both clay platelets is to produce a substantial decrease in the motional amplitudes of those chains. The presence of these dynamically restricted segments might be explained by the presence of anchoring points between the clay platelets and the PEG oxygen atoms, which was induced by the Na+ cations. By comparing the PEG motional amplitudes of the double-layered nanocomposites composed of polymers with different molecular weights, a decrease in the motional amplitude for the smaller PEG chain was observed, which might also be understood using the presence of anchoring points.