977 resultados para Parker, Leonard Fletcher, 1825-1911.


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The Drell-Yan differential cross section is measured in pp collisions at √ s = 7TeV, from a data sample collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 36 pb-1. The cross section measurement, normalized to the measured cross section in the Z region, is reported for both the dimuon and dielectron channels in the dilepton invariant mass range 15{600 GeV. The normalized cross section values are quoted both in the full phase space and within the detector acceptance. The effect of final state radiation is also identified. The results are found to agree with theoretical predictions. Copyright CERN.

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A measurement of the J/ ψ and ψ (2S) production cross sections in pp collisions at √s = 7TeV with the CMS experiment at the LHC is presented. The data sample corresponds to an integrated luminosity of 37 pb -1. Using a fit to the invariant mass and decay length distributions, production cross sections have been measured separately for prompt and non-prompt charmonium states, as a function of the meson transverse momentum in several rapidity ranges and integrated in the kinematical regions considered in this study. In addition, cross sections restricted to the acceptance of the CMS detector are given, which are not affected by the polarization of the charmonium states. The ratio of the differential production cross sections of the two states, where systematic uncertainties largely cancel, is also determined. The branching fraction of the inclusive B → ψ (2S)X decay is extracted from the ratio of the non-prompt cross sections to be: B(B → ψ (2S)X) = (3:08 ± 0:12 (stat.+syst.) ± 0:13 (theor.) ± 0:42 (BPDG)) × 10 -3: B(B → ψ(2S)X) = (3.08 ± 0.12 (stat.+syst.) ± 0.13 (theor.) ± 0.42 (B PDG)) × 10 -3.

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The effects of ingested neem oil, a botanical insecticide obtained from the seeds of the neem tree, Azadirachta indica, on the midgut cells of predatory larvae Ceraeochrysa claveri were analyzed. C. claveri were fed on eggs of Diatraea saccharalis treated with neem oil at a concentration of 0.5%, 1% and 2% during throughout the larval period. Light and electron microscopy showed severe damages in columnar cells, which had many cytoplasmic protrusions, clustering and ruptured of the microvilli, swollen cells, ruptured cells, dilatation and vesiculation of rough endoplasmic reticulum, development of smooth endoplasmic reticulum, enlargement of extracellular spaces of the basal labyrinth, intercellular spaces and necrosis. The indirect ingestion of neem oil with prey can result in severe alterations showing direct cytotoxic effects of neem oil on midgut cells of C. claveri larvae. Therefore, the safety of neem oil to non-target species as larvae of C. claveri was refuted, thus the notion that plants derived are safer to non-target species must be questioned in future ecotoxicological studies. © 2012 Elsevier Ltd.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Desde o final do século XIX e, até, o início do século XX, Belém na fala do intendente Antonio Lemos era conhecida como a “necrópole” paraense. Doenças e epidemias estavam no centro do debate das práticas médico-sanitárias. O higienismo de médicos tornou se discurso recorrente de intervenção no espaço cotidiano dos moradores, onde as campanhas de profilaxias foram alçadas enquanto responsáveis pela cura da cidade. As ações propostas por esculápios cientistas geraram tensões entre moradores e autoridades públicas diante a aliança do saber médico e o poder público, sobre a qual me propus analisar para explicar o dia-a-dia das medidas coercitivas, no intuito de entender essa aliança. Analisando artigos na imprensa, literatos, jornalistas, políticos, relatos médicos, mensagens de governo, relatórios, fotografias e charges foi possível acompanhar os significados atribuídos pelos contemporâneos em relação as epidemias da varíola, tuberculose e febre amarela, por exemplo, por parte dos saberes médico-sanitários. A belle époque em Belém deixou de ser nessa dissertação um cristal historiográfico, diante as adversidade do viver de sujeitos anônimos. Belém tornou-se um laboratório de experiências, os médicos propunham curá-la para alcançar o tão propalado desenvolvimento econômico ou progresso. A consolidação dessa aliança coube à responsabilidade do renomado sanitarista Oswaldo Cruz, que desembarcou, em 1910, na capital paraense para combater a febre amarela, com carta branca do governador João Coelho. Por outro lado, a cura da cidade ou “necrópole” paraense teve significados mais amplos, destacando-se o sepultamento do mal amarílico, como também, concomitantemente, o sepultamento da oligarquia do coronel Antonio Lemos.

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A proposta desta dissertação é discutir a formação do poder simbólico da República Paraense nos seus primeiros anos (1890-1911), observando eventos como a mudança dos nomes de algumas ruas em homenagem ao novo regime, assim como a formulação do calendário republicano, com destaque para os festejos republicanos de 15 e 16 de novembro, datas da Proclamação da República e sua Aclamação no Pará, com o objetivo de analisar seus significados, organização e, principalmente, o entendimento da idéia de fortalecer as práticas do novo governo perante a sociedade. Além dessas festas, destacam-se nessa abordagem os banquetes, reuniões políticas promovidas pela elite da época. Essa pesquisa apresentou-se como possibilidade a ser trabalhada, uma vez que partindo de outro enfoque, serão discutidas as idéias, os personagens, os discursos, as intrigas e as alianças que estiveram presentes nesse período político marcante da história regional e nacional a partir dessas comemorações.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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On the field of the projects of hydraulic systems exists a lot of worries when we talk about the calculate of hydraulic pumps. In this case some facts must be considerate: length of tubes, fluid characteristics, height gauge, temperature, pressure, characteristics of tubes, flow required and others. For that mathematic calculates must be developed with the objective to optimize hydraulic pumps and agree to find an ideal machine (that don't requires more energy than necessary or less energy than it requires; that is the more critical case, cause exists the risk that the fluid pumped do not agree to become in your destiny). The wrong calculate of this machine can super-size its, bringing an excessive energy consumption. Actually it's an important subject because we are in the age of lack of energy what turn it more expensive. So the correct sizing of a hydraulic pump is connected with the fact that you have to uses the enough energy resources avoiding waste. The calculate of ideal pump in the pumping system is studied during years and a lot of specialists in this subject develop equations and theories to calculate its. Some researches study about this subject and all of them become to the same conclusion: to find the ideal pump we have to know the characteristics of fluid (cinematic viscosity), the required flow , overall yield (overall of motor x overall of pump) the high gauge or discharge pressure and the loss of repression. The pressure drop can be calculated with different theories: using Hazen-Williams, Darcy e Weisbach or Chézy (1775 - that starts the researches to calculate the pressure drop). Although the most used theory and what is most near to reality is the Darcy's equation. So, in this job the Darcy's equation were choice to calculate the drop pressure that consider what kind of flow we are studying: laminar or turbulent. The determination of the best pump to be used in the ... ( complete abstract click eletronic access below)

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This work aims to investigate the institutionalization of management processes in the legislation of the Brazilian education. For this study was considered the first decades of the twentieth century (1911-1950). The laws of Brazil in the early Republic were derived from tradition or forged by the great legislators. In turn, the tradition is inserted in the power of social organization that is preserved, in a more forceful manner, through the norms and rules. With this assumption, the study chose the Rivadávia and Carlos Maximiliano Reforms, both of the beginning of the century, and the Organic Laws of Teaching, granted by the government in this period, to understand how legislation institutionalized the role of the director in basic education in this context history. The reflections presented introduce historical elements that demonstrate actions and relationships that remain in the form of habits in the school managements. These institutionalized elements contribute to the debate about the political and pedagogical difficulties pointed out by scholars and professionals, related to the promotion of democratic management in the public school.