Showing papers by "Universidade Estadual de Londrina published in 1985"
TL;DR: In this article, the authors discuss that the most important lesson that can be derived from these examples is that significantly different chemistry can be generated in ionic reactions in the gas phase.
Abstract: Publisher Summary This chapter reviews that gas-phase nucleophilic displacement reactions constitute a mature field of physical organic chemistry. It is a field that provides some unusual insights into the world of solvent-free chemistry, although many experiments remain to be rationalized on a more quantitative basis. The extent to which the understanding of gas-phase reactivity provides an insight into solution behavior by appropriate extrapolation of salvation effects has been under attack recently, and it is a subject of lively discussion. The chapter discusses that the most important lesson that can be derived from these examples is that significantly different chemistry can be generated in ionic reactions in the gas phase. This aspect is one which most theoretical and experimental chemists find intellectually stimulating and a challenge to be pursued.
135 citations
TL;DR: In this article, the authors used the surface response methodology to study the effects of three variables, viz. total reducing sugars (116,222 g l −1 ), yeast inoculum concentration (10, 30%), and supplemented inorganic nitrogen as (NH 4 ) 2 SO 4 (1, 3 ) on the production of ethanol.
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DOI•
01 Jan 1985TL;DR: In the last three ultimas decadas, o Parana passou por profundas modificacoes globais, do ponto de vista da ocupacao, organizacao e evolucao das atividades economicas, that influiram nas formas da sua configuracao espacial, tanto rural como urbano-industrial as mentioned in this paper.
Abstract: Nas tres ultimas decadas, o Parana passou por profundas modificacoes globais, do ponto de vista da ocupacao, organizacao e evolucao das atividades economicas, que influiram nas formas da sua configuracao espacial, tanto rural como urbano-industrial, refletindo as formas da expansao capitalista brasileira e da sua insercao no desenvolvimento capitalista mundial.
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TL;DR: Reports of a case of intraventricular hematoma as purulent meningitis complication in a child of 6 months old, without vascular malformation, and the evolution was sactisfatory after the surgical treatment.
Abstract: Report of a case of intraventricular hematoma as purulent meningitis complication in a child of 6 months old, without vascular malformation. The evolution was sactisfatory after the surgical treatment.