Alexander Scriabin: the definition of a new sound space in the crisis of tonality

This dissertation describes the new compositional system introduced by Scriabin in 1909��� 1910, focusing on Feuillet d���Album op. 58, Po��me op. 59, n��1, Pr��lude op. 59, n��2 and Prometh��e op. 60. Based upon exhaustive pitch and formal analysis the present study (a) claims the inexistence of non-functional pitches in all analysed works, (b) shows that transpositional procedures have structural consequences on the ���basic chord���, and (c) for the first time advances an explanation on the intrinsic relation between the sonata form and the slow Luce line in Prometh��e op. 60; RESUMO: Sob o t��tulo de ���Alexander Scriabin: a defini����o dum novo espa��o sonoro na crise da Tonalidade���, a presente tese descreve o novo sistema compositivo introduzido por Scriabin em 1909��� 1910, tomando como ponto de partida o estudo de Feuillet d���Album op. 58, Po��me op. 59, n��1, Pr��lude op. 59, n��2 e Prometh��e op. 60. Baseando-se numa an��lise exaustiva das alturas e da forma, este estudo (a) conclui pela inexist��ncia de alturas n��o funcionais em qualquer das obras analisadas, (b) mostra que os procedimentos transpositivos t��m consequ��ncias estruturais no ���acorde b��sico���, e (c) pela primeira vez explica a estrutura formal de Prometh��e op. 60 a partir da rela����o intr��nseca entre a sua forma sonata e a linha lenta de Luce.

Decomposition of organic matter in the presence of the herbicide clomazone.

Clomazone (2-(2-chlorophenyl) methyl-4.4-dimethyl-3-isoxazolidinone) is a post emergence herbicide widely used in rice fields in Rio Grande do Sul (Brazil) with high activity against Gramineae at the recommended application rate of 700 g/ha. The presence of this chemical in the water may affect microorganisms responsible for the decomposition of organic matter. Thus, a disturbe in the trophic chain sustained by the decompositors could happen. In the present work the decomposition rate of organic matter (Typha latifolia) exposed to several concentrations of a clomazone formulation: 0 (control), 25.0, 62.0, 156.0, 390.0 and 976.0mg/L on the basis of the active ingredient was evaluated. Five litter bags containing about 3.0g of pieces of T. latifolia leaves wereplaced in aquariums with 15 of reconstituted water. In cach aquarium were added 500g of sediment from the same place of the plant collection, as a source of decompositors microorganisms. The results relative tothe control, showed that the decomposition rate in the highest and lowest dose was reduced in 50.05 and 1,28%, respectively, after 80 days.