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Paternalism, Transgression and Slave Resistance in Brazil
Tramps, lazy, cheaters. Expressions like these were widely used by several masters in view of the multiple forms of transgressions committed by slaves. This type of (dis) qualification gained an even stronger contour in properties controlled by religious orders, which tried to impose moralizing measures on the enslaved population. In this book, the reader will come across a peculiar form of management, highly centralized and commanded by one of the most important religious corporations in Brazil: the Order of Saint Benedict. The Institutional Paternalism built by this institution throughout the 18th and 19th centuries was able to stimulate, among the enslaved, the yearning for freedom and autonomy, 'prizes' granted only to those who fit the Benedictines' moral expectation, based on obedience, discipline and punishment. The "incorrigible" should be sold while the "meek" would be rewarded. The monks then became large slaveholders, recognized nationally as great managers. However behind this success, they had to learn to deal with the stubborn resistance of those who refused to peacefully surrender their bodies and minds, resulting in negotiations and concessions that caused disturbances, moments of instability and internal disputes.
Caracterização elétrica de dispositivos tipo ISFET para medição de pH
Neste trabalho, foi realizado um estudo da caracteriza o el trica dos ISFETs com estrutura Si/SiO2/Si3N4, utilizando pseudoeletrodos de Pt, Ag e Au como alternativas aos eletrodos convencionais para medi es de pH. Primeiramente, foram empregados tr s m todos reportados na literatura (extrapola o linear para obten o da tens o de limiar, segunda derivada para obten o da tens o de limiar e corrente de sublimiar, respectivamente) com o objetivo de obter a sensibilidade dos ISFETs (mV/pH) e analisar a confiabilidade dos resultados utilizando eletrodo de refer ncia padr o de Ag/AgCl. Posteriormente, tendo como base o eletrodo de Ag/AgCl, foram estudados os desempenhos de pseudoeletrodos de Pt, Ag e Au nas medidas de pH. Como resultado, observou-se que os pseudoeletrodos de Pt e Ag apresentaram sensibilidades compat veis com o eletrodo de refer ncia padr o de Ag/AgCl ( 50mV/pH) para pH cido na faixa de 1 a 3. J o pseudoeletrodo de Au, manteve um comportamento aproximadamente linear ao longo de toda a faixa de pH estudada (1 a 10), por m, com sensibilidade inferior na faixa de 32 34mV/pH.