1,030 research outputs found
Multimedia fiction: theory and practice of Décio Pignatari s literary narrative
No full textA tese tem por temas a teoria e a prática da prosa ficcional em Décio Pignatari.
Décadas de trabalho em diferentes pólos da comunicação publicou ensaios e deu aulas de teoria da informação, atuou como articulista na imprensa, foi o primeiro intelectual a escrever seriamente sobre a TV no Brasil, traduziu Marshall McLuhan, fez publicidade e cinema transformaram Pignatari num criador multimídia. É essa característica que marca sua obra voltada para a ficção.
Pautada pelo uso de múltiplos recursos, verbais e não-verbais, literários e de mídias diversas, as narrativas de Décio Pignatari representam extensões de sua prosética como ele chama o seu pensamento sobre a prosa ficcional e vice-versa
Enquanto a plataforma teórica pignatariana para a ficção estabeleceu-se especialmente por meio de cursos, ensaios e artigos, sua produção em termos de narrativa literária deu origem aos seguintes títulos, que serão aqui analisados: 1)O rosto da memória, contos; 2)Panteros, romance; 3) Cléris und Lotta , que integra a antologia 21 Histórias de amor, mas que já aparecera, sem título, no corpo do prefácio de Cultura pós-nacionalista, coletânea de textos de não-ficção; e 4)Céu de lona, peça teatral.
Para estudar prosa ficcional de Décio Pignatari, a tese vale-se sobretudo da própria prosética que tem por base a semiótica de Charles Sanders Peirce. De acordo com Pignatari, a ficção, notadamente a que surge a partir de Ulisses (1922), de James Joyce, se apóia na secundidade peirceana, que se projeta sobre a terceiridade como um presente suspenso , ponto de encontro dos demais tempos, do máximo de gêneros e de discursos de distintos meios de comunicação.
Esta é a proposta do autor para sua prosa ficcional, espelho da prosética , que dela também se alimenta, conforme pretendemos demonstrar.
Ressalte-se que Décio Pignatari alcança pela primeira vez essa condição acadêmicaThe dissertation subject is the theory and practice of Décio Pignatari s fictional prose.
Decades of work in various fields of communication he has published essays, has taught information theory, has written to the press and was the first intellectual to write in-depth pieces on TV in Brazil, he has translated Marshall McLuhan, has produced advertising pieces, and cinema have made of Pignatari a multimedia creator. This approach also defines his fictional production.
Characterized by the usage of multiple resources, both verbal and non-verbal, literary and of various media, Décio Pignatari s narratives represent extensions of his prosética as he calls his thinking on the fictional prose and vice versa.
While the pignatarian theoretical platform catering his fiction has been established especially through courses, articles, and essays, his narrative literary production has originated the following works: 1) O rosto da memória [The face of memory], stories; 2) Panteros [Pantheros], novel; 3) Cléris und Lotta [Cléris and Lotta], narrative that integrates the anthology 21 Histórias de Amor [21 Love Stories], which had already appeared, untitled, in the foreword to Cultura pós-nacionalista [Post-Nationalist Culture], collected non-fictional texts; and 4) Céu de lona [Tent sky], a play.
To survey Décio Pignatari s fictional prose, the dissertation counts mostly on the very prosética which is based on Charles Sanders Peirce s semiotic. According to Pignatari, fiction, notably the one produced since the release of Ulysses (1922), by James Joyce, is dominated by Peirce s Secondness, which projects itself on Thirdness as a suspended gift, a meeting point of the other tenses, the maximum of genders and of distinct discourses of the media.
This is the author s purpose for his fictional prose, a prosética mirror, that also feeds itself, as we intend to demonstrate.
This is the first "critical study" of Décio Pignatari s fictional prose and his prosétic
Output from paper: The s process in massive stars, a benchmark for neutron capture reaction rates
No full text<p>Title: "The s process in massive stars, a benchmark for neutron capture reaction rates"; Authors: Marco Pignatari, Roberto Gallino, Rene Reifarth</p><p>------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------</p><p>Content: tar.gz package including a README file and two folders. The folders contain all the abundance plots associated to the work Pignatari, Gallino & Reifarth, 2023 The European Physical Journal A, Special Issue on: 'From reactors to stars' in honor of Franz Kaeppeler. </p>
Convective–reactive nucleosynthesis of K, Sc, Cl and p-process isotopes in O–C shell mergers
Get PDF© 2017 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. We address the deficiency of odd-Z elements P, Cl, K and Sc in Galactic chemical evolution models through an investigation of the nucleosynthesis of interacting convective O and C shells in massive stars. 3D hydrodynamic simulations of O-shell convection with moderate C-ingestion rates show no dramatic deviation from spherical symmetry. We derive a spherically averaged diffusion coefficient for 1D nucleosynthesis simulations, which show that such convective-reactive ingestion events can be a production site for P, Cl, K and Sc. An entrainment rate of 10-3M⊙s-1features overproduction factors OPs≈ 7. Full O-C shell mergers in our 1D stellar evolution massive star models have overproduction factors OPm> 1 dex but for such cases 3D hydrodynamic simulations suggest deviations from spherical symmetry. γ - process species can be produced with overproduction factors of OPm> 1 dex, for example, for130, 132Ba. Using the uncertain prediction of the 15M⊙, Z = 0.02 massive star model (OPm≈ 15) as representative for merger or entrainment convective-reactive events involving O- and C-burning shells, and assume that such events occur in more than 50 per cent of all stars, our chemical evolution models reproduce the observed Galactic trends of the odd-Z elements
Conversa com Décio Pignatari
Get PDFDécio Pignatari é um dos criadores da poesia concretista brasileira na década de 50. Em1952 fundou o Grupo Noigandres, com Augusto de Campos e Haroldo de Campos, que publicou cinco antologias poéticas. Nas décadas seguintes, traduziu várias obras em francês, inglês e russo. Foi um dos criadores da editora e da revista Invenção, lançada em 1962 como veículo da Poesia Concreta. Foi membro fundador da Associação Internacional de Semiótica, em Paris (França), em 1969. Nas décadas de 1980 e 1990 colaborou em vários periódicos, entre os quais a Folha de S. Paulo, e foi professor de Semiótica e Comunicação da FAU/USP. Publicou vários livros de ensaios, entre eles Cultura Pós-Nacionalista (1998). Sua obra poética inclui os livros Carrossel, Exercício Findo, Poesia pois é Poesia, 1950/1975 e Poetc, 1976/1986. Na área da Linguagem publicou Informação, Linguagem e Comunicação, Semiótica e Literatura, Pobre Brasil!, Letras,Artes, Mídia e Errâncias, entre outros
The Complex Behaviour of s-Process Element Abundances at Young Ages
Get PDFOpen clusters appear as simple objects in many respects, with a high degree of homogeneity in their (initial) chemical composition, and the typical solar-scaled abundance pattern that they exhibit for the majority of the chemical species. The striking singularity is represented by heavy elements produced from the slow process of the neutron-capture reactions. In particular, young open clusters (ages less than a few hundred Myr) give rise to the so-called barium puzzle: that is an extreme enhancement in their [Be/Fe] ratios, up to a factor of four of the solar value, which is not followed by other nearby s-process elements (e.g., lanthanum and cerium). The definite explanation for such a peculiar trend is still wanting, as many different solutions have been envisaged. We review the status of this field and present our new results on young open clusters and the pre-main sequence star RZ Piscium
Noigandres : the first works of Augusto de Campos, Haroldo de Campos and Décio Pignatari
No full textDissertação (mestrado)—Universidade de Brasília, Departamento de Teoria Literária e Literaturas, Programa de Pós-Graduação em Literatura, 2014.Proponho, nessa dissertação, uma análise dos primeiros trabalhos dos poetas Augusto de Campos, Haroldo de Campos e Décio Pignatari, de seus livros de estreia (O Rei Menos o Reino, O Auto do Possesso e O Carrossel, respectivamente) à revista Noigandres que, antes do concretismo consolidado enquanto movimento, já apresentava elementos inovadores poéticos, que desafiavam a crítica nacional. A análise é feita tendo em vista os elementos ideogrâmicos de construção poética, os elementos sonoros como a paronomásia, recursos como a parataxe, a teoria da montagem e a importância da oralidade à leitura do poema.I propose, through this dissertation, an analysis of Augusto de Campos, Haroldo de Campos and Décio Pignatari‟s first works, from their debut books (O Rei Menos o Reino, O Auto do Possesso and O Carrossel, respectively) to the Noigandres magazine which, before concretism was consolidated as a movement, already introduced innovator elements in its poetry, defying the national criticism. The analysis is done prioritizing the ideogramic elements, the sonorous elements, means like the parataxis, the montage theory and the importance of the orality to the reading of the poem.Instituto de Letras (IL)Departamento de Teoria Literária e Literaturas (IL TEL)Programa de Pós-Graduação em Literatur
Bactericidal effect of S-nitrosothiols against clinical isolates from keratitis
No full textAngelino Julio Cariello,1 Paulo Jos&eacute; Martins Bispo,2 Gabriela Freitas Pereira de Souza,3 Antonio Carlos Campos Pignatari,2 Marcelo Ganzarolli de Oliveira,3 Ana Luisa Hofling-Lima11Department of Ophthalmology, 2Division of Infectious Diseases, Federal University of S&atilde;o Paulo, 3Institute of Chemistry, University of Campinas, Campinas, S&atilde;o Paulo, BrazilBackground: The purpose of this study was to evaluate the antimicrobial activity of two nitric oxide donors, ie, S-nitrosoglutathione (GSNO) and S-nitroso-N-acetylcysteine (SNAC), against clinical isolates from patients with infectious keratitis.Methods: Reference broth microdilution assays were performed to determine the minimum inhibitory and bactericidal concentrations for GSNO and SNAC against four American Type Culture Collection strains and 52 clinical isolates from patients with infectious keratitis as follows: 14 (26.9%) Pseudomonas species; 13 (25.0%) coagulase-negative Staphylococci; 10 (19.2%) Staphylococcus aureus; nine (17.3%) Serratia marcescens; and six (11.5%) Enterobacter aerogenes. Sterility control and bacterial growth control were also performed.Results: SNAC showed lower minimum inhibitory and bactericidal concentrations than GSNO for all clinical isolates from patients with infectious keratitis. For Gram-positive bacteria, mean minimum inhibitory and bactericidal concentrations were 2.1 &plusmn; 1.3 and 8.6 &plusmn; 3.8 mM for SNAC and 4.6 &plusmn; 3.2 and 21.5 &plusmn; 12.5 mM for GSNO (P &lt; 0.01). For Gram-negative bacteria, mean minimum inhibitory and bactericidal concentrations were 3.3 &plusmn; 1.4 and 6.1 &plusmn; 3.4 mM for SNAC and 12.4 &plusmn; 5.4 and 26.5 &plusmn; 10.1 mM for GSNO (P &lt; 0.01). The minimum bactericidal to inhibitory concentration ratio was &le;8 in 100% of all isolates tested for SNAC and in 94.2% tested for GSNO.Conclusions: SNAC and GSNO had effective inhibitory and bactericidal effects against bacterial isolates from keratitis. SNAC showed greater antimicrobial activity than GSNO against all bacteria. Gram-positive bacteria were more susceptible to the inhibitory and bactericidal effects of the S-nitrosothiols.Keywords: antimicrobial activity, S-nitroso-N-acetylcysteine, S-nitrosoglutathione, nitric oxide donors, infectious keratiti
Speculative Brazil: science and Brazilianness in Jerônymo Monteiro\'s fiction
No full textO presente trabalho objetiva analisar os livros de ficção científica escritos por Jerônymo Monteiro (1908 1970), sob o aspecto de sua relação dialógica com a ciência brasileira ou internacional o fantástico e a brasilidade. Nesse sentido, seus escritos de ficção científica assim como seus textos publicados na coluna \"Panorama\" (1958 1970), do jornal \"Folha de São Paulo\" são entendidos como síntese propiciada pela dialética entre ciência (principalmente em seus aspectos sociais) e fantástico, acrescida de brasilidade. A partir da leitura dos textos do autor, além da consulta à bibliografia específica, três hipóteses foram formuladas, a fim de nortear a pesquisa: 1) a ciência brasileira e internacional está presente na obra de ficção científica de Jerônymo Monteiro, algumas vezes, de forma explícita; 2) Jerônymo Monteiro, em sua obra de ficção científica, preocupava-se principalmente com o aspecto social da ciência, sendo totalmente contrário a uma ciência e tecnologia desvinculadas de quaisquer princípios éticos ou morais; 3) A construção do fantástico, nas narrativas de Jerônymo Monteiro, não se dá apenas pelo uso da capacidade imaginativa do autor ou por meio do diálogo com outras obras fantásticas ou de ficção científica, mas antes se vincula ao fantástico propalado pela corrente denominada \"Realismo Fantástico\". Além disso, como ferramenta de análise, foi utilizada a categoria \"caixa-preta\", pensada por Bruno Latour no livro \"Ciência em Ação\" (2000).This doctoral thesis aims to analyze the books of science fiction written by Jerônymo Monteiro (1908 - 1970), from the aspect of their dialogical relationship with science - Brazilian or international - the fantastic and the Brazilianness. In this sense, his science fiction writings - as well as his texts published in the column \"Panorama\" (1958 - 1970), of the newspaper \"Folha de São Paulo\" - are understood as a synthesis provided by the dialectic between science (mainly in its social aspects) and fantastic, plus Brazilianness. From the reading of the author\'s texts, besides consulting the specific bibliography, three hypotheses were formulated in order to guide the research: 1) Brazilian and international science is present in Jerônymo Monteiro\'s science ficition, sometimes in explicit form; 2) Jerônymo Monteiro, in his science fiction works, was mainly concerned with the social aspect of science, being totally opposed to a S&T detached from any ethical or moral principles; 3) The construction of the fantastic, in the narratives of Jerônymo Monteiro, is not only made through the use of the author\'s imaginative capacity or through dialogue with other fantastic works or science fiction, but rather is linked to the fantastic propagated by the movement called \"fantastic realism\". In addition, as a tool of analysis, the \"black box\" category, thought by Bruno Latour in the book \"Ciência em Ação\" (2000) was used
Corrigendum to FGF23-regulated production of fetuin-A (AHSG) in osteocytes [Bone 83 (2016) 35-47]
No full textRefers to: D. Mattinzoli, M.P. Rastaldi, M. Ikehata, S. Armelloni, C. Pignatari, L.A. Giardino, M. Li, C.M. Alfieri, A. Regalia, D. Riccardi, P. Messa
FGF23-regulated production of Fetuin-A (AHSG) in osteocytes
Bone, Volume 83, February 2016, Pages 35-4
Impact of the uncertainty in alpha-captures on Ne-22 on the weak s-process in massive stars
No full textMassive stars at solar metallicity contribute to the production of heavy elements with atomic masses between A = 60 and A = 90 via the so-called weak s-process (which takes place during core He and shell C burning phases). Furthermore, recent studies have shown that rotation boosts the s-process production in massive stars at low metallicities, with a production that may reach the barium neutron-magic peak. These results are very sensitive to neutron source and neutron poison reaction rates. For the weak s-process, the main neutron source is the reaction 22Ne(α,n)25Mg, which is in competition with 22Ne(α,γ)26Mg. The uncertainty of both rates strongly affects the nucleosynthesis predictions from stellar model calculations. In this study, we investigate the impact of the uncertainty in α-captures on 22Ne on the s-process nucleosynthesis in massive stars both at solar and at very low metallicity. For this purpose, we post-process, with the Nugrid mppnp code, non-rotating and rotating evolutionary models 25M⊙ stars at two different metallicities: Z = Z⊙ and Z = 10-5Z ⊙, respectively. Our results show that uncertainty of 22Ne(α,n)25Mg and 22Ne(α,γ)26Mg rates have a significant impact on the final elemental production especially for metal poor rotating models. Beside uncertainties in the neutron source reactions, for fast rotating massive stars at low metallicity we revisit the impact of the neutron poisoning effect by the reaction chain 16O(n,γ)17O(α, γ)21Ne, in competition with the 17O(α,n)20Ne, recycling the neutrons captured by 16O
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