902 resultados para reachable sets
Resumo:
This paper conducts an historical and conceptual review of the idea of ‘cultural intermediaries’ and sets up a contrast between the cultural and creative industries. It draws on theorizations of ‘economic imaginaries’ and reconstructs the respective imaginaries of cultural and creative industries. It suggests that the former was organized around the culturalization of the economy and the second around the economization of culture. Nevertheless, there are complicities between them, not least in the contention that a new set of economic developments would redeem the traditional promises of culture.
Resumo:
Monetite is a phosphate mineral formed by the reaction of the chemicals in bat guano with calcite substrates and is commonly found in caves. The analog of the mineral monetite CaHPO4 has been synthesized and the Raman and infrared spectra of the natural monetite originating from the Murra-el-elevyn Cave, Eucla, Western Australia, compared. Monetite is characterized by a complex set of phosphate bands that arise because of two sets of pairs of phosphate units in the unit cell. Raman and infrared bands are assigned to HPO4(2-), OH stretching and bending vibrations. Infrared bands at 1346 and 1402 cm−1 are assigned to POH deformation modes. Vibrational spectroscopy confirms the presence of monetite in the cave system.