Gunpowder
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. SALITRE: O PRODUTO QUÍMICO ESTRATÉGICO NO PASSADO DO BRASIL
Saltpeter demanded for a long-time strategic attention in view of its importance in the form of gunpowder by the governments of many nations. The sources of this mineral in Brazil were almost always associated to the soil in caves, which was extracted because of a limited amount of that precious salt. The first references pointed out that saltpeter was first
Quím. Nova. Publicado em: 2021-04
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2. Caracterización de soldaduras cuproaluminotérmica en cañerías de conducción para la protección catódica
ABSTRACT Copper-Aluminothermic weld is a process in which welder is generated by thermofusion. The necessary heat is obtained by the aluminum reducing effect above copper oxide, creating a high temperature exothermic reaction, in which melt and overheated copper is the filler material [1].This technique is used to joint rails in railway industry, in groundin
Matéria (Rio J.). Publicado em: 19/07/2018
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3. A natureza da potassa e os métodos de preparação em finais do século XVIII numa publicação do Frei Veloso: Alographia dos Alkalis Fixos
By the end of the eighteenth century many were the studies on how one could identify and produce different kinds of alkali. In this dissertation we shall try to establish a relation between the practices and theories applied to obtain different salts which were used in a number of products like soaps, glasses, medication, as well as in gunpowder industry. In
Publicado em: 2010
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4. O fabrico e uso da pólvora no Brasil colonial: o papel de alpoim na primeira metade do século XVIII
Gunpowder played a significant role in colonial Brazil. This reached a climax in the eighteenth century, when the country's large gold output enticed the greed of many. The French invasion of Rio de Janeiro in 1711 made the city's defense even more pressing to the metropolis. Brigadier Alpoim symbolized this reaction. He was a leading Luso-Brazilian engineer
Química Nova. Publicado em: 2008
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5. Liberdade tutelada : os africanos livres e as relações de trabalho na Fabrica de Polvora da Estrela, Serra da Estrela/RJ (c.1831-c.1870)
"Liberated african", "freed african", "prize negroes" and "emancipado". These expressions, in the nineteenth century, indicated the juridical status of every ilegally enslaved africans rescued by government authorities in slave trade ships after the slave trade prohibition. Once captured by a government, like Brazil?s Empire, they should be put to work as "a
Publicado em: 2005