945 resultados para Rio do rasto formation
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The formation of shear bands in plane sheet is studied, both analytically and experimentally, to enhance the fundamental understanding of this phenomenon and to develop a capability for predicting material failure. The evolution of voids is measured and its interaction with the process of shear banding is examined. The evolving dilatancy in plasticity is shown to have a vital role in analysing the shear-band type of bifurcation, and tremendously reduces the theoretical value of critical stresses. The analyses, referring to both localized and diffuse modes of bifurcation, fairly explain the corresponding observations obtained through testing a dual-phase steer sheet and provide a justification of the constitutive model used.
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In this paper a hydrodynamic approach is used to analyse carefully the flow field inChandler loop--the artificial thrombus formation. The results obtained show that near thelower meniscus where the thrombus is formed, there is a back flow accompanied with asecondary flow and its mainflow is toward the meniscus, thus providing a favourable condi-tion for corpuscle aggregation. Our finding is valuable for studying the mechanism ofthrombus formation in artificial organ and in vivo.
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Examina o sistema de representação proporcional na Câmara dos Deputados, com foco nas distorções das representações estaduais. Analisa como se reflete no processo político e no pacto federativo a alocação desproporcional de cadeiras na Câmara dos Deputados, tomando por base a atuação parlamentar nos debates sobre a Transposição do Rio São Francisco. Discute em que medida a existência de Estados sobrerrepresentados vem ao encontro dos interesses da federação, como mecanismo legítimo de compensação das disparidades regionais existentes no país.
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This paper analyzes the process of endogenous union formation in the context of a sequential bargaining model between a firm and several unions and tries to explain why workers may be represented by several unions of different sizes. We show that the equilibrium number of unions and their relative size depend on workers' attitudes toward the risk of unemployment and union configuration is independent of labor productivity.
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This paper analyzes union formation in a model of bargaining between a firm and several unions. We address two questions: first, the optimal configuration of unions (their number and size) and, second, the impact of the bargaining pattern (simultaneous or sequential). For workers, grouping into several unions works as a price discrimination device which, at the same time, decreases their market power. The analysis shows that optimal union configuration depends on the rules that regulate the bargaining process (monopoly union, Nash bargaining or right to manage).
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Published as an article in: Games and Economic Behavior, 2003, vol. 44, issue 1, pages 183-194.
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Apresenta a descrição dos festejos, iluminação das casas particulares com o nome dos donos, arcos triunfais, inclusive o que a Junta do Comércio mandou construir segundo o risco de Grandjean de Montigny e a pintura de Debret.
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O Diario..., como observa Borba de Moraes, "apresenta um roteiro muito resumido, mas muito exato" e, como diz Sacramento Blake, "atendendo ao que é escrito em viagem, e viagem de 648 léguas de terras invias e inexploradas. É, entretanto, trabalho de grande valor para a geografia dos lugares percorridos." O Diario... foi reeditado pelo Instituto Nacional do Livro em 1944.
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O folheto aqui contestado como tendo sido publicado ‘nos últimos dias do anno próximo passado’ é o ‘Le Roi et la famile Royale de Bragance doivent-ils, dans les circonstances presentes, retourner em Portugal ou bien rester au Brésil? Rio, À l’Impremerie Royale, 1820, in 4º, 17 p.’, mencionado por Vale Cabral no item 618 da sua bibliografia. No mesmo item há referencias a esse ‘Exame Analytico-critico” publicado na Bahia. Autoria atribuída a João Severiano Maciel da Costa, que a nega em "Apologia que dirije à Nação Portugueza...", cuja referência se encontra na Bibliographia Brasiliana, Rubens Borba de Moraes, 1983. v. 1, p. 221
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Aborda o problema do papel dos portais legislativos e o uso de suas ferramentas como indutoras de participação do cidadão nos processos da democracia brasileira. A pesquisa se conduziu, em linhas gerais, para chegar a uma análise das condições de mediação entre a Câmara dos Deputados e o cidadão por meio do uso do Portal. A fundamentação teórica se constituiu de discussões sobre a tecnologia como mediadora da informação; sobre as bases da democracia e a formação do Parlamento Brasileiro; e sobre o uso dos Portais Legislativos, dos canais de mediação e dos serviços de atendimento.
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In consecutive greenhouse studies, growth and propagule formation were examined first in monoecious hydrilla [Hydrilla verticillata (L.f.) Royle], then in dioecious hydrilla, at three temperature levels (25, 30, and 35 C) and contrasted over three periods of growth (8, 12 and 16 wks). Each biotype was grown under natural photoperiods, decreasing from 14 hrs (in Oct, Nov, and Dec). For both biotypes, total biomass and root-to-shoot ratios were significantly reduced at 35 C; greater biomass was produced both at 25 and 30C. Increases in growth period generally enhanced total biomass and shoot production; however, shoot length was unresponsive to growth periods beyond 8 wks. The 35C treatment strongly impeded tuber formation and eliminat4ed the production of axillary turions; the number and biomass of these propagules peaked at lower temperatures under short photoperiods after 12 to 16 wks. Shoot elongation was stimulated with increases in temperature and was especially pronounced in the dioecious biotype. Notably, in the monoecious biotype, the number of shoots as a potential source of fragments, and tuber production (although reduced) occurred at relatively high levels under unfavorably hihg-temperature (35C) conditions. These results suggest that monoecious hydrilla may be better adapted to high temperatures than previously shown, and that the distribution of both biotypes in the U.S. could overlap further in southern states.