Um estudo sobre a preparação metalográfica da liga de aluminio AA7075-T6

The increasing technological innovation and demand for materials with better properties boosts research into new materials and new alloys. To do so, aluminum alloys are being developed, among them the AA7075-T6, having many applications in aerospace and military industries, machinery and equipment, molds for plastic injection and structures. To study and understand the properties, characteristics and especially the microstructure of the material, the metallographic preparation is essential. This paper presents new methodologies to achieve the metallography of samples of scrap alloy AA7075-T6, with emphasis on methods of polishing. For the five samples, the best results were those with specific grinding, the samples only going down on the sander. For polishing, the most effective method so far has been using the polishing cloth 16.3, of ATM enterprise, solution of diamond 3 μm, solution of diamond 1 μm, and colloidal solution of OP-S. For the etching, the reactive agent used was phosphoric acid (H3PO4) 85% P.A., as 90% in the proportion of distilled water to 10% acid. The best results were obtained in the attacks of 300 and 240 seconds, revealing the grain boundaries in most areas. Methodologies need more studies and more tests, but the results have proved to be satisfactory

Citologia do lavado broncoalveolar de eqüinos da polícia militar do distrito federal

The objective of this study was evaluate the airways' cells types from horses of the military police of Federal District. It was used 24 horses, divided into 2 groups of 12: group I - animals in policy activity and group II - animals out of policy activity. At the inspection, physical exam and blood exam, the results agreed with no present clinical pathologies. It was infused 240mL of saline solution in the bronchoalveolar wash. In the bronchoalveolar wash, the group I registered 25.25±7.3 squamous cells, 20.2±5.5 epithelial cells, 22.2±6.23 macrophages and 2.02±5.77 erythrocytes, and in the group II, it was observed 31.0±9.47 squamous cells, 19.0±5.20 epithelial cells, 43.0±13.88 macrophages, 4.0±1.52 eosinophile and 3.0±1.0 erythrocytes. Verifying the occurrence of side effects after the experiment, there was no problem from the used technique.

Apontamentos à análise da reforma militar na transição espanhola

In this paper, we revisit the recent Spanish political process, emphasizing issues relating to the Armed Forces (FFAA), trying to understand since the formation of these forces prior to the dictatorship of Francisco Franco, through this and coming to today, when it seems that the reforms promoted over past 30 years, that finally resulted in the Armed Forces incorporated of democracy.

A máscara chinesa: Notas sobre uso das fontes produzidas pelo aparato repressivo da ditadura militar

The methodological aspects which the historians face when using documents produced by the Brazilian military dictatorship on the leftist movements which intended to trigger the revolutionary struggle are analyzed. Whereas the strategy of the repressive regime in producing and establishing the 'truth' is enhanced, the resistance strategies of the political forces targeted by the repressive apparatus are investigated. The documents on the political organization called Marxist-Leninist Popular Movement have been employed.

A atuação das tendências políticas no movimento estudantil da Universidade de São Paulo (USP) no contexto da ditadura militar dos anos 70

Pós-graduação em Ciências Sociais - FFC

O principio da legalidade no controle dos atos administrativos na Polítcia Militar do Estado de São Paulo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A gestão da produtividade na manufatura como fator indutivo na formação do valor agregado de produtos e serviços: um exemplo de aplicação na indústria aeronáutica

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O pensamento militar de León Trotsky e a formação do exército vermelho: 1918-1925

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Mudando a estratégia: a reorganização militar brasileira na região fronteiriça com a Colômbia

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

O Regime militar no discurso-memória da Igreja Católica na região metropolitana de São Paulo (1964-1985)

Pós-graduação em História - FCHS

Ensino Superior e Regime Militar no Brasil: a trajetória da Faculdade de Filosofia, Ciências e Letras de Franca (1963-1976)

Pós-graduação em História - FCHS

Crédito rural, agricultura e regime militar: a política de desenvolvimento agrícola (1965-1979)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Os Planos Nacionais de Desenvolvimento e a institucionalização da ciência durante a ditadura militar (1964-1985): a defesa de uma ciência nacional pela comunidade científica brasileira

Pós-graduação em História - FCLAS

(Des)ordem na fronteira: ocupação militar e conflitos sociais na bacia do Madeira-Guaporé (30/40)

Pós-graduação em História - FCLAS

As influências do realismo político e do complexo industrial-militar no expansionismo norte americano (1990-2004)

Pós-graduação em História - FCLAS