A História da Alimentação: balizas historiográficas

Os M. pretenderam traçar um quadro da História da Alimentação, não como um novo ramo epistemológico da disciplina, mas como um campo em desenvolvimento de práticas e atividades especializadas, incluindo pesquisa, formação, publicações, associações, encontros acadêmicos, etc. Um breve relato das condições em que tal campo se assentou faz-se preceder de um panorama dos estudos de alimentação e temas correia tos, em geral, segundo cinco abardagens Ia biológica, a econômica, a social, a cultural e a filosófica!, assim como da identificação das contribuições mais relevantes da Antropologia, Arqueologia, Sociologia e Geografia. A fim de comentar a multiforme e volumosa bibliografia histórica, foi ela organizada segundo critérios morfológicos. A seguir, alguns tópicos importantes mereceram tratamento à parte: a fome, o alimento e o domínio religioso, as descobertas européias e a difusão mundial de alimentos, gosto e gastronomia. O artigo se encerra com um rápido balanço crítico da historiografia brasileira sobre o tema

Pharmacological characterization of the vesamicol analogue (+)-[ [formula omitted]]MIBT in primate brain

The vesamicol analogue, meta-[ 125 I ]iodobenzyltrozamicol [(+)-[ 125 I ]MIBT] was evaluated as a probe for the in vitro labeling of the vesicular acetylcholine transporter in primate brain. In the striatum, (+)-[ 125 I ]MIBT bound a single high-affinity site with a K d value of 4.4±0.7 nM. Competition for (+)-[ 125 I ]MIBT binding to the striatum by a group of vesamicol analogues displayed a pharmacological profile similar to the rank order of potency previously observed for the vesicular acetylcholine transporter on Torpedo synaptic vesicles. High-affinity binding of (+)-[ 125 I ]MIBT in the occipital cortex was characterized by a K d value of 4.6±1.1 nM. However, the rank order of potency for inhibition of (+)-[ 125 I ]MIBT binding to the occipital cortex by the same test compounds differed from that observed in the striatum. The results suggest that (+)-[ 125 I ]MIBT is a reliable probe of the vesicular acetylcholine transporter in primate striatum, but its binding in primate occipital cortex is more complex

Production of belite calcium sulfoaluminate cement using sulfur as a fuel and as a source of clinker sulfur trioxide: pilot kiln trial

A pilot-scale trial was undertaken in a 7·4 m kiln to demonstrate the production of belite calcium sulfoaluminate cement clinker using sulfur as a raw feed. The sulfur was introduced in its elemental form as fuel to the burner, thus partially offsetting fuel costs while providing sulfur trioxide which is incorporated in the clinker. The study demonstrates that sulfur trioxide is readily sequestered into cement clinker in a standard rotary kiln; however, some scrubbing of the exit gas may still be required. As the products of scrubbing (anhydrite or gypsum) are usually required to optimise the cement formulation, the recovered sulfur product can find an immediate use in the final cement product. This trial demonstrates the successful production of targeted belite calcium sulfoaluminate clinkers at scale using sulfur as both a fuel and sulfur trioxide source