Desgaste corrosivo-cavitativo-erosivo de um aço-carbono em meio aquoso com frações de sal (NaCl), CO2 e particulados sólidos (SiO2)

A batch of eighty-four coupons of low carbon steel were investigated at laboratory conditions under a corrosive, cavitative-corrosive (CO2) and corrosive-erosive (SiO2 + CO2) in an aqueous salt solution and two levels of temperature. The following measurements were made on Vickers (HV0,05, HV0,10, HV0,20) Microhardness tests at three levels of subsurface layer. A turbulent flow collided on the cylindrical sample, with and without mechanical stirring and gas bubbling, with and without fluid contamination by solid particles of SiO2, at two temperatures. Surface Roughness and Waviness, under two conditions "as received, after machining" and "after worn out", as well as gravimetric and electrochemical parameter were measured on the two opposite generatrices of each cylindrical sample, on the flow upstream (0°) and downstream (180°) by Profilometry, Mass Variation and Linear Polarization Resistance (LPR). The results of the Microhardness and Surface Texture of all coupons were subjected to statistical comparison, using the software Statgraphics® Centurion XVI, 95% statistical certainty, and significant differences were observed in some arrays of measurements. The corrosive wear rate measured by LPR and mass variation shown to be sensitive to the presence of bubbles and hydrodynamic fluctuations inside the cell, considering the temperature and contamination of corrosive fluid by solid particles. The main results of visual inspection relative to some topologies of the surface damages involving different mechanisms that were seen to give explanation for some fluctuations in wear rates of the steel experimentally investigated

Alternância no uso dos modos indicativo e subjuntivo em orações subordinadas substantivas: uma comparação entre o português do Brasil e o francês do Canadá

The purpose of this work is to analyze the use of the indicative mood, instead of the subjunctive prescribed by the normative grammar, in complement clauses introduced by the conjunction que in Brazilian Portuguese. Contexts of use of the subjunctive according to grammatical prescription, and contexts of fluctuation on the use of that verbal mood were analyzed, in an attempt to investigate what interferes on the choice of the mood by the user of the language. This study is based on North-American Functional Linguistics theoretical perspective, oriented to analyzing language in use, in the light of the principles of grammaticalization and markedness. The results obtained support that the contexts that favor the indicative over the subjunctive are those composed by a complement clause functioning as a direct object the unmarked clause of all complement clauses and by a verb on the main sentence that belongs to the semantic field of low certainty, corresponding to the epistemic sub-mode the unmarked category of the deontic sub-mode. The results indicate that pragmatics and semantics factors influence the language user on the choice of the verbal mood. This research also presents comparative data on the use of the indicative mood in place of the subjunctive in Brazilian Portuguese and Canadian French, aiming to providing suggestions on language teaching

Slogans políticos em campanhas eleitorais no Rio Grande do Norte: a mídia na disputa ideológica.

To the observe the periods of electoral campaigns, we can realize sharply the abundance of political propaganda that announces the candidates, their campaign record, their proposed and everything that can carry them to the victory in the urns. The propaganda is today an essential tool in the votes dispute, in consequence of this, there is, in Brazil, the increasing participation of the Politics Parties in seminars of electoral marketing. They are varied strategies of the media used in the divulging of the candidacies, among them the slogan. Instigated by the explicit relation media/political, this work intends to investigate the ideologies (values) announced by the slogans of political propaganda that circulated in electoral periods. Thus, we base on the theory of the Circle of Bakhtin, who considers the statement as unit of the verbal communication, and that conceives the language as phenomenon dialogical, and, too, in the conceptions of alien words, social voices and dialogical relations formulated by the referred theory. We use, for better to comprehend, the slogan as strategy mediatic, of the classical study done by Olivier Reboul concerning the slogan; and, like starting point of a conception about ideology, studied John Thompson to comprehends the ideological phenomenon. Our corpus it constitutes of 14 political slogans announced in the campaigns for mayor of the cities in Natal and Mossoró, both located in Rio Grande do Norte s state, Brazil, in 1996, 2000 and 2004. For the analysis of these slogans, we consider the social-historical context in which were announced, being contemplated the linguistic and discursive aspect, according to the following methodological order: the identification of alien words (interdiscours); the social voices and the kinds dialogical relations established; and, finally, the ideology announced by the statement. This way, we can arrive to the conclusion that in the electoral context occurs a true ideologies war , in other words, in the political game of an electoral campaign, the slogans announces different values, which vary in several factors function, for example, the historicity, the subject that enunciates, the discursive positionings.

A melancolia em A Asa Esquerda do Anjo

O termo melancolia, como foi mostrado em todo o decorrer do nosso trabalho, principalmente no histórico da melancolia, é um termo, por excelência, escorregadio. De várias facetas, a melancolia pode vir a designar desde patologia, passando por inspiração filosófica, para desaguar num modo de ver a vida, como bem nos coloca Denílson Lopes em seu livro Nós os mortos: melancolia e neo Barroco (1999). A Asa Esquerda do Anjo (LUFT, 2005) é uma obra que já nos acompanha há algum tempo, pois desde a graduação estudamo-la. Em torno da protagonista, chamada de Gisela pela mãe e Guísela pela avó, circula toda a trama desse romance moderno. Tentamos visualizá-la nos três capítulos da dissertação. No primeiro, focalizamos a obra sob o aspecto de uma possível estética da melancolia, tendo por base teórica Marie Claude Lambotte (2000). Depois, elaboramos algumas linhas sobre as perdas da protagonista que do enredo emergem. Por fim, demonstramos Gisela pelo aspecto de múltiplas faces. Sabendo que uma obra literária é infinita em seus significados, cremos que A Asa Esquerda do Anjo (2005) suscita outras nuances. Isto nos dá a certeza que não é um texto acabado, finalizado. Estas nuances poderão ser estudadas, pesquisadas em uma outra oportunidade por nós ou por outros leitores de Luft. A fim de estudar a melancolia em Gisela, fundamentamos nossa dissertação com os estudos de Freud (1980) a respeito do tema. Este faz uma análise comparando a melancolia ao luto, para poder chegar, assim, a um denominador comum, já que o termo é flexível em seus significados. Freud e alguns outros autores no campo, tais como, Bataille (1980); Benjamin (1984); Erickson (2003); Klein (1971); Kristeva (1989); Lino (2004); Peres (2003); Santos (2005), Scliar (2003), pois, nos auxiliaram em nossas pesquisas e direcionaram melhor o nosso olhar sobre a obra. Acreditamos ter alcançado nosso objetivo estudar a obra A Asa Esquerda do Anjo (LLUFT, 2005) pelo foco da melancolia e suas nuances. Gisela é um personagem inacabado. Em seu discurso ela deixa isto bem nítido. Assim também, não buscamos respostas prontas, com teor de acabamento. O fechar da história está nas mãos do leitor. Mas, à medida que reiniciamos nova leitura, percebemos algo novo, que pode ser extraído da obra, do personagem, da trama. É neste abrir/fechar que a própria Gisela sussurra: Vem, vem, vem.... Ao chamar a todos nós, chama também para um novo caminhar com ela, em suas perturbações subjetivas e sua ausência de respostas. Ao aceitarmos este convite, fica difícil retornarmos pelo mesmo caminho de antes. É necessário, então, junto com este ser de papel, rever nossos passos, para, enfim, redimensionarmos nossa escrita acerca de nós mesmos e (por que não dizer?) do mundo que nos circunda

Vinicius de Moraes e Shelley: um exercício de desleitura .

Using Harold Bloom s methodology known as dialectical revisionism we undertake the task of misreading of Vinícius de Moraes (1913- 1980) poems Poética (1950), Operário em construção (1955), Poética II (1960) against Percy Bysshe Shelley (1792-1822) and his poem A Song: Men of England, suggesting that the Brazilian poet trammeled a battle with his poetic triad, in which Operário em Construção is Vinicius s main weapon. It is suggested here that each one of Vinícius´poem represents a step of what Bloom calls anxiety of influence . The misreading proposed confronts the themes and the imagery of the poems, arguing that Shelley and Vinícius are similar when they approach exploitation and working class consciousness according to the Dialectic Marxism pattern, and that Vinícius´s poem was not only inspired by Shelley s, but using one of the strategies suggested by Bloom, he corrects the ideological flaws of Shelley s poem. It is also discussed the possibility that both poems are inspired by Plato´s (428-7 a 348-7 a.C.) allegory of the cave, his concept of justice and the moral construction of the polis defended in A República. Thus, considering the process of misreading, these five poems constitute what Bloom calls a family romance , which is characterizes the phenomenon of melancholy of creativity

O retrato de Eros em Florbela Espanca: um estudo sobre a escrita erótica em Charneca em Flor

Portuguese Poet Florbela Espanca (1984 1930) lived and produced her literary work during a period in which, on the one hand, the ideals of an innovative and irreverent movement were being fomented led by Fernando Pessoa, Almada Negreiros and Mário de Sá-Carneiro , on the other hand, Portugal was still dominated by a conservative and authoritarian thought, anchored in a bourgeois-christian ideology. Inserted in an unfavorable social context to the expression of the female sexual impulse, poet Florbela then appears with an innovative speech as threatening the sexual organization of the Portuguese society. This way, considering the relations between the poetic text and the historical-social context, the aim of this work is to present a reading upon the Eroticism in The Flowering Heath (2005) as a way to contravene the borders given to the sexual phenomenon. For this reason, we will mainly resort to the concepts developed on the approach of Georges Bataille The Eroticism (2004) and also by Octavio Paz The Double Flame: Love and Eroticism (2001)

Propaganda e discurso ideológico: um estudo dos slogans das campanhas de incentivo à leitura

Considérant que le Brésil est un pays considéré comme «non- lecteurs», nous avons essayé de trouver des solutions pour inverser cette situation d'exclusion sociale à travers des campagnes et des projets. Le slogan était le moyen de la propagande a proposé à cet effet. En étant un peu éclairante, il a été considéré qu'ils étaient peut-être inséré dans un contexte idéologique, en passant, qui faisait alors partie de l'objet d'études en question et, en conséquence, l'objectif était d'étudier comment, dans niveau discursif, les relations sociales de l'idéologie et du pouvoir dans ces dessins slogans verbaux et des campagnes publicitaires pour encourager la lecture. Nous avons utilisé comme instrument de collecte de données en 2007 slogans projets (sept) et l'intensification des campagnes de publicité dans les années 1995 à 2006, peu après la création de la descendance en 1992, où son fonctionnement a été analysé et discours idéologique, en cherchant à identifier les états effets de sens proposé. Nous avons utilisé pour soutenir la perspective de recherche d'analyse du discours de l'école française, affiliée à Pêcheux. Afin de sens les effets sens des tests a été fait une semi-ouverte aux enseignants qui traitent directement avec l'enseignement de la lecture de l'Institut de l'Enseignement Supérieur du Président-Kennedy, situé à Natal / RN. On été appliqués 100 questionnaires, parmi lesquels 60 d‟entre eux utilisés pour l‟analyse. La recherche a démontré par l'analyse, que la façon d'encourager les gens à lire se déplace à travers le modèle principal de la compréhension de la lecture à laquelle les slogans ont été utilisés, en les intégrant dans un discours dominant, qui ne contribue pas de manière significative à l'augmentation le nombre de lecteurs dans le pays. Grâce à l'analyse des slogans et la réception des sujets de recherche, nous nous rendons compte de la diversité et l'idéologie sont présents en elles, révélant tout le temps, la compréhension de la lecture comme une surface pratique, ne mettre en lumière certaines de ses fonctions Importantes au sein d‟um contexte éducatif plus large

Memórias da prisão: literatura e liberdade m estudo sobre Graciliano Ramos e Antonio Gramsci

La tese avvicina le Memorie dal carcere, di Graciliano Ramos e i Quaderni dal carcere di Antonio Gramsci, in una prospettiva in cui essi erano uniti per lo stesso ideale politico della prima metá del XX secolo e rappresentavano la resistenza intellettuale di fronte alla repressione. Entrambi furono vittime dell autoritarismo dei poteri fascisti e registrarono il periodo di prigione in differenti forme memorialistiche. Questi scrittori sono uniti anche per il contesto nazionale molto simile per la differenza economica tra le regioni. Condividono, inoltre, anche il concetto di arte e la certezza che l alienzazione dell intelligenza può essere superata solamente attraverso la ricostruzione delle basi nazionali per mezzo della conoscenza, dell educazione e della cultura. Si vuole mostrare come i concetti di Gramsci sono presenti non solo nella convinzione politica di Graciliano, ma in tutto il suo stile letterario memorialístico. Il lavoro, ancora, paragona le Memorie del carcere con due testi memorialistici di prigione in Italia, che sono Le mie prigioni, di Silvio Pellico, e Se questo è un uomo, di Primo Levi, per dimostrare che la proposta della letteratura gramsciana è molto più vicina allo scrittore brasiliano che ai due suoi conazionali.

Mariana , Pai contra mãe e O caso da vara : escravidão e chão histórico em Machado de Assis

Machado de Assis understood his time and brought his perception of Brazilian society in the 19th century, with its multiple aspects economy, politics, culture, amongst others - to the texts he wrote. Through the tensions lived in his novels and short stories, Machado displays Brazilian social reality and the changes it had been undergoing. Mariana and Pai contra mãe show the crisis of the slavery system, the relation of dependency, the treatment given to the captives and the lack of coherence of a country that intended to adopt Liberalism as an ideology, but which kept on living under the shadow of slavery and its consequences. A country where the priorities were given to the landlords, owners of slaves, in protection of their interests. O caso da vara tells about how the crias da casa little black girls who lived in the household and learned how to make spool embroidery were treated. What were the punishments for desobedience and how they were levelled out, how should be the behaviour of a child who lived as a social outcast. Thus, this paper aims at playing a game of mirrors between History and fiction. Not only to play it, but to analyze how Machado deals with the reflections of 19th century Brazil on his short stories

Relações entre mídia e lazer:o capitalismo, os meios e a apropriação do tempo livre nas sociedades industrial e pós-industrial

This research aims to understand the relationship between media, capitalism and ownership of free time for leisure practices in industrial societies and postindustrial. Searching is thus a conceptual framework that takes into account the kind of ideology that naturalizes the relationship of leisure with the foundations of contemporary media, and the media only with leisure, forgetting their insertion in the labor and industrial relations in society. We intend to demonstrate that every mode of production, in the capitalist system, entails a mode of reproduction. Methodologically, this is a first approximation, from theoretical concerns already performed, constituting a theoretical research, bibliographic and descriptive character. The results of the text drives us to the conclusion that the work and leisure spheres tend to be less and less differentiated, since both remain as activities of product management with the same intellective protocols, based on information and communication technology, and that accordingly, the media favors an expansion of productive activity even during leisure time

As provas metafísicas da existência de deus em René Descartes

Le but de cet article est de présenter les éléments de preuve de l existence de Dieu présentée dans les Méditationes Métaphysiques de René Descartes, en soulignant son importance et son rôle dans le projet philosophique cartésien. La recherche visait á comprendre comment Descartes, étant um homme de science, la recherche de Dieu dans le pilier et d assurer leur philosophie. Par consé quence que Descartes propose de remplacer lui promettant de construire une nouvelle science fondée sur des bases sûres. Ainsi, le texte suit um ordre qu une partie de doute méthodologique comme um élément essentiel pour surmonter une connaissance née de l incertitude et généralisée et d opinions comme étant de droite, pour finalement atteindre la vérité dans les sciencies, Grace à la découverte Du premier cours, le cogito, moi pensant, alors existantes. Trouvé cette certitude, le sujet qui a en elle l idée d um être infini qui contient toutes perfections et, comme Il fera la démonstration de la preuve a posteriori et a priori. Et donc cet être ne peut pas être considéré comme inexistant projet assurant Descartes

Um lugar (in)existente: o "país" de Mossoró" nas tramas da consciência histórica

This work aims to analyze, on the one hand, how the academy has created the spatial term the country of Mossoró and, on the other hand, is to discover, by the teachers testimony, how the History teaching works with this spatiality. The academic production in Mossoró-RN, particularly during the last two decades of the century XX, focuses on the practices that built a historic memory based on political interests of the Rosado family. Therefore, this work is divided in three chapters. In the first one, we identify how the academic production has created a group of meanings related to the country of Mossoró , because it is a way to realize how this place is seeing and understand. In the second one, there is an explanation about the ideology concepts, that structure meanings created by the academic production, as well as the historic conscience that is used to think about the dynamic of teaching History. In the third, we analyze how teachers, expressing their historic conscience, figure meaning to this country of Mossoró

Trabalho infantil na agricultura :sentidos produzidos pelas mês e pelos professores

Attempts to explain child labor, for the most part, have been reduced to the economic aspect, looking to establish a causal relationship between work and poverty. Without disregarding this aspect, we intend to approach this phenomenon considering other aspects that could be contributing towards its maintenance. We seek, above all, to articulate it with the concepts of disciplinary power and ideology. The present study, therefore, tries to consider these aspects with the intention of learning the reasons that the mothers and the teachers produce concerning child labor in the cultivation of vegetables. We elected these participants because we considered that child labor has been reinforced by the disciplinary institutions and proponents of ideology, the family and the school, here represented, respectively, by the mothers and the teachers. To affect this study, we created focused groups with the mothers whose children are students and work in the cultivation of vegetables in Gramorezinho (neighborhood situated in the northern part of Natal, RN) and with the teachers of the neighborhood school (Escola Lourdes Goudeiro). The discussion of the participants was handled according to the perspective of discursive practices, attempting to articulate them with the notions of ideology and disciplinary power. In general, we perceived how much ideology and discipline are immersed in the discursive practices of the participants. Whereas, even though in some moments the reference to work as being something that takes time from the child to study and play is apparent, the participants attribute great importance to child labor. Both for the teachers and for the mothers, work is something that can free the children from laziness, from becoming criminals and from using drugs. It too constitutes an important alternative to idleness and to the permanence of the child in the streets

A Relação formação profissional / Mercado de Trabalho: percepção dos assistentes sociais não-inseridos no mercado de trabalho do Serviço Social em Natal/RN

The study is about the non-insertion of the Social Assistant in the work market of Natal/RN, emphasizing the perception those Social Assistants have about this problem. We try to analyze the relation that those workers figure out about their non-insertion in the work market and their professional formation. The problem is related to the present unemployment rates in our society, which results of the changes that have affected the world of work as a whole in the wake of the Productive Restructuring and State Reformation supported by the neo-liberalism ideological system. We realize that these factors have deeply affected the configurations of the work market in general; especially those related to professions whose challenges multiply obstacles not only to the insertion of new workers, but to their staying in their job. We note that the reality of the work market has been built up on the decrease of the work force opportunities and the increase of the selectivity criteria to insertion of new workers. In consequence, unemployment rates increase everywhere, regardless of place, profession or education level of the workers. Work and management changes have brought about new challenges to professional formation. The presence of neo-liberalism productive and market logic demands a more adequate professional formation to work market from their candidates to a job. Due to the numberless difficulties workers face nowadays to enter the world of work, society itself and workers in general begin to question the profession of their choice, the kind of formation they have got, and frequently they lay the blame of their professional difficulties on it. This result has come out from the research we did with some social assistants not inserted in the professional work market in Natal/RN. The research reveals too that those unemployed professionals see their difficulties connected to their professional formation and they happen to say that the main challenge they face today is to get acknowledgment to the significance and importance of their profession

Mulher não vale nem um real : patriarcado nas letras das músicas de forró

Patriarchy is a dominating system that establishes male power in social relations as the social-ideological system and the structuring element of several ways of men‟s domination on gender social relations, on organization of social life, on private relations, and on political decision spaces. In this study we enlarge our reflection about patriarchy from the analysis of Forró lyrics, more specifically the variation known as stylized. Of late decades, it is a kind of music that has been receiving a large acceptance all over the national territory, making use of everyday expressions that propagate and make apology to many forms of discrimination, oppression and violence against women. We emphasize that over this study 14 Forró lyrics were analyzed of different styles besides stylized, like the traditional and the double meaning ones. However, we dwelled on the content analysis, particularly in three Stylized Forró lyrics, they are: Tapa na Cara (2008) by Saia Rodada Band; Mulher Roleira (2004), Aviões do Forró Band; and Bomba no Cabaré (2007), Matruz com Leite Band. In order to make a critical analysis of the elements in the lyrics content, we support ourselves on the theoretic-methodological references of the dialectical materialism, a method that allowed us to get closer to the totality of the reality that includes the popular involvement of the analyzed lyrics in a qualitative way. In that sense, we hold onto the theoretic-methodological categories: gender social relations, patriarchy, violence against women, ideology and cultural industry. As from the lyrics compilation, they were arranged by theme, we classified and analyzed the content, which allowed us to comprehend the messages in the lyrics, beyond the text shows at first sight. Today, there are many mechanisms of propagation and perpetuation of patriarchal ideology. A very relevant mechanism of this phenomenon is the sexual violence. The violence against women is a form to propagate and keep sexism, which may occur in different ways, like physical, psychological, sexual, patrimonial and social. Through our study we established that the propagation of the violence against women as being something natural and banal, giving reinforcement to the asymmetric construction of gender relations that priorizes male to the detriment of female. This banalization is perhaps, one of the strongest allies of this phenomenon‟s perpetuation, that affects women all over the world from different social classes