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Search Results: 1 - 10 of 400313 matches for " Cláudio R. C. "
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Philosophia prima como repraesentatio na filosofia natural de Hobbes: exame de fundamentos metafísico-cognitivos como complementos teóricos de seu materialismo mecanicista
Leivas, Cláudio R. C.;
Manuscrito , 2011, DOI: 10.1590/S0100-60452011000200006
Abstract: the starting point of philosophia prima of hobbes has as reference physics and metaphysics of aristotle. the later development of his philosophia prima, however, sets in motion a critique of aristotelian metaphysics that will lead to a theoretical reorganization of a series of principles and concepts inherited from tradition. considered as a whole, the first hobbesian philosophy consists of a broad definition, that is metaphysics defined as the science of the entity as entity (instead of the classical definition of science of the being as being), on which are erected two strictu sensu definitions: metaphysics as general physics - to say the entity (ens) is to say the body (corpus) - and metaphysics as a representation. this paper is an effort to understand these and other questions related to studies hobbesian on how we know the world, things and ourselves.
Paix?o, democracia e delibera??o em Hobbes e Walzer
Leivas, Cláudio R. C.;
Trans/Form/A??o , 2009, DOI: 10.1590/S0101-31732009000200003
Abstract: the article examines the relationship among passion, democracy and deliberation in the thought of hobbes and walzer. reasons are presented by which those two thinkers are positioned in a critical way regarding the deliberations in the democratic governments' extent. the relationship between reason and passion is also examined inside the central problem of our comparative study.
A teoria óptica de Hobbes
Cláudio R. C. Leivas
Princípios : Revista de Filosofia , 2007,
Abstract: The present article intends to bring out the general lines of Hobbes′s optical theory. However, before examine the development of his optical studies, we will make a preliminary résumé concerning opticals conceptions prior to Hobbes′s, with the purpose to situate the reader in the context of optic’s History.
The science of the preservation of the state: hobbes and the question of dissolution and maintenance of modern political state = A ciência da conserva o do estado: hobbes e a quest o da dissolu o e manuten o do estado político moderno
Leivas, Cláudio R. C.
Veritas , 2012,
Abstract: A quest o da dissolu o e manuten o do Estado é um aspecto da filosofia política de Hobbes que ainda n o mereceu um exame na mesma extens o e importancia geralmente atribuídas a outros temas pertencentes aos seus escritos políticos. Evidencio neste estudo a preocupa o do filósofo inglês em mostrar que a ciência de conservar Estados possui o mesmo valor e calibre científico filosófico do que a ciência de construir Estados. A divis o tripartite deste estudo tem como propósito investigar, primeiro, as causas e os personagens associados à dissolu o do Estado, depois, os preceitos e artifícios relacionados à manuten o do Estado e, por fim, os atos de hostilidades (trai o e espionagem, por exemplo) que necessitam ser conhecidos e combatidos pelo representante soberano porque afrontam e contradizem o imperativo de seguran a salus populi suprema lex (a seguran a do povo é lei suprema) e os princípios de raz o que sustentam in totum a arquitet nica pública hobbesiana. The question of dissolution and maintenance of the state is an aspect of Hobbes’s political philosophy that has not yet received a survey to the same extent and importance usually attributed to other issues pertaining to his political writings. I emphasize in this study the English philosopher’s concern to show that the science of conserving States has the same value and scientific philosophical caliber than the science of building States. The tripartite division of this study aims to investigate first the causes and the characters associated with the dissolution of the state, then the precepts and processes related to the maintenance of the State and, finally, the acts of hostilities (treason and espionage, for example) that need be known and combated by the sovereign representative because someone else affronts and contradicts the security imperative salus populi suprema lex (safety of the people is the supreme law) and the principles of reason that sustain in totum the Hobbesian public architectonic.
Resultados funcionais da artrodese do punho
Barbieri, Cláudio Henrique;Mazzer, Nílton;Elui, Valéria M. C.;Fonseca, Marisa C. R.;
Acta Ortopédica Brasileira , 2002, DOI: 10.1590/S1413-78522002000100003
Abstract: the functional results of 51 wrist arthrodesis carried out in 49 patients with different regional pathologies are analyzed. in all cases the arthrodesis was performed with rigid internal fixation with a dynamic compression plate; postoperative follow-up ranged from 6 to 201 months (average: 73 months). both subjective and objective methods were used in the evaluation. the subjective method was based on the evaluation by the patients and the objective method on analysis of radiographs and functional tests simulating all different functions of the upper limb. the arthrodesis was performed in 14o extension and 8o ulnal deviation, on average. primary healing was obtained in 50 wrists (98%) in eight weeks on average. pseudarthrosis was observed in one single case, and eventually healed after reoperation for bone grafting. all patients presented pain improvement, with a different pattern, as compared to the preoperative period and all of those with lighter activities resumed their previous occupation. relative loss of grip strength (61% from normal) and digital pinch (70% from normal) were observed, but final results were considered as satisfactory on the functional tests, in accordance to the literature. it was concluded that wrist arthrodesis is applicable to a diversity of wrist pathologies which imply in pain and unstability, with easily reproducible results, without significantly affecting the global upper limb function, despite the relative loss of power, mainly due to the pre-existing factor.
Avalia o de um ELISA para detec o de anticorpos contra Babesia bigemina em bovinos e sua aplica o em um inquérito sorológico no Brasil
Madruga Cláudio R.,Marques Ana Paula C.,Araújo Flábio R.,Miguita M.
Pesquisa Veterinária Brasileira , 2001,
Abstract: Um ensaio de imunoadsor o enzimática (ELISA) baseado em antígeno bruto foi avaliado na detec o de anticorpos contra Babesia bigemina. A sensibilidade e a especificidade do teste foram de 98,0% e 99,0%, respectivamente. Concordando com a alta especificidade do teste, n o foram verificadas rea es cruzadas com soros de bezerros inoculados três vezes com 10(7) merozoítos de Babesia bovis. Com rela o à compara o do ELISA com a imunofluorescência indireta (IFAT) na detec o de anticorpos contra B. bigemina em bezerros experimentalmente infectados com cinco isolados brasileiros geograficamente distintos deste hemoparasito, o IFAT foi capaz de detectar anticorpos um dia antes do ELISA na maioria dos soros dos animais. Houve uma boa concordancia entre os resultados encontrados no ELISA e no IFAT com soros de bovinos de regi o de estabilidade enzoótica (k=0.61). No entanto, n o houve concordancia entre os testes sorológicos com soros de animais de área de instabilidade enzoótica (k=0.33). O ELISA foi empregado em um inquérito epidemiológico com 1.367 soros de quatro municípios do Pantanal de Mato Grosso do Sul e caracterizou esta regi o como uma área de estabilidade enzoótica, uma vez que as prevalências variaram de 87,7 a 98,9%. Dessa forma, este ELISA, que apresentou alta sensibilidade, especificidade e desempenho similar ao IFAT, pode ser utilizado no diagnóstico sorológico de B. bigemina.
Morphoanatomy and pharmacognostic study of the wood of Croton echioides, the Northeastern Marapuama
Cláudio R. Novello,Luís C. Marques,Cristine R. Miyazaki,Maria A. Milaneze-Gutierre
Revista Brasileira de Farmacognosia , 2012,
Abstract: Croton echioides Baill., Euphorbiaceae, is a small tree found in Bahia, Northeastern Brazil. Its stem bark has been widely sold as an aphrodisiac and tonic, as a substitute for the roots of Ptychopetalum olacoides Benth. Olacaceae, the Amazon Muira Puama or Marapuama, and C. echioides is characterized as the "Northeastern Marapuama". This contribution describes a morphoanatomical analysis and pharmacognostic study of stem bark of this species. The stem has a thick cortex with compound starch grains and laticifers; a sclerenchymatic sheath which consists of brachysclereids with large crystals externally to the phloem, and abundant fiber in the secondary xylem, as the main features of the species. The data obtained for water content (9.26±0.07%), water-soluble extractives (3.92±0.19%), total ash (1.24±0.06%) and acid-insoluble ash (0.16±0.01%), together with the chromatographic profile obtained by TLC, contribute to the quality control and standardization for the plant drug. The pharmacological screening indicated LD50 values above 500 mg/kg orally and equal to 500 mg/kg by the i.p. route, as well as some stimulant potential, depending on the dose.
Diterpenes from Erythroxylum barbatum
Santos, Cláudio C. dos;Lima, Mary Anne S.;Braz Filho, Raimundo;Silveira, Edilberto R.;
Journal of the Brazilian Chemical Society , 2006, DOI: 10.1590/S0103-50532006000700016
Abstract: two new diterpenes ent-rosan-1-one-5a,15x,16-triol (1) and ent-11a-acetoxy-devadarane-15x,16-diol (2) were isolated from roots of erythroxylum barbatum, in addition to the known diterpenes ent-devadarane-15x,16-diol (erythroxydiol x, 3) and procesterol. investigation of the trunk heartwood furnished the ent-devadarane-11a,15x,16-triol (erythroxytriol q, 4), ent-devadarane-7b,15x,16-triol (hydroxydevadarool, 5), b-sitosterol and its glucoside. structural characterization, including the relative stereochemistry of all compounds, was established on the basis of spectroscopic methods, particularly 1d and 2d nmr, and comparison with data from literature.
Caracteriza??o isoenzimática de oito acessos de Erva-de-bicho
Lopes, Reginalda C.;Casali, Vicente Wagner D.;Barbosa, Luiz Cláudio A.;Cecon, Paulo R.;
Horticultura Brasileira , 2003, DOI: 10.1590/S0102-05362003000300003
Abstract: the technique of horizontal electrophoresis of 12% starch gel was used to characterize eight accesses of polygonum punctatum ell. the isozymatic phenotypes of the malate dehydrogenase (mdh), acid phosphatase (acp), peroxidase (po), glutamate dehydrogenase (gdh), leucine aminopeptidase (lap), esterase (est), alcohol dehydrogenase (adh), glutamate oxalacetate transaminase (got), isocitrate dehydrogenase (idh) and shikimate dehydrogenase (skdh) were determined using young leaves extracts of each accession. the electrophoresis was performed in corn starch and hydrolysed starch gels. the corn starch showed a satisfactory resolution, for separation of the isozymics bands of idh, adh and mdh. however, for the other systems, the hydrolysed starch presented better resolution. all enzyme systems studied, except for lap, presented high polymorphism, allowing to establish individual patterns in all accesses, demonstrating the potential of the isozymes as genetic markers for the polygonum.
Fatigue life prediction of shot peened components
Cláudio,R.A.; Silva,J.M.; Branco,C.M.; Byrne,J.;
Ciência & Tecnologia dos Materiais , 2008,
Abstract: shot peening is one of the most effective surface treatments in order to prevent crack initiation and early crack propagation. part of the studies to determine the fatigue performance of shot peening are based on experimental tests. almost no work is published related with the prediction of shot peening behaviour. the present paper evaluates the ability of the current methodologies, used to predict fatigue life, on components treated with shot peening. the finite element method was used to determine the stress, strain and strain energy due to shot peening of some specimens tested experimentally. these results were used to apply methods to predict the total fatigue life. a final discussion is presented about the ability of the methods used, to predict the fatigue life of the specimens tested experimentally.
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