197 research outputs found
Construyendo la ópera nacional: A Marília de Itamaracá de L. V. De-Simoni
No full textLuiz Vicente De Simoni (1782-1881) was an Italian physician who went to Rio de Janeiro in 1817, and was constantly involved in the musical and theatrical scene of the city. He is the author of Marília de Itamaracá (1854, music by Adolpho Maersch), considered by some authors as the first “Brazilian” opera. The subject is historical and narrates some episodes of the 17th century war against the Dutch. One of his main concerns was the use of Brazilian and Portuguese themes in operas, in order to invent something “national”. As part of a broader movement, the idea was to explore Brazilian people, landscape and traditions as the main subject for operas that should be sung in Portuguese. The movement was related to a broader political project sponsored by the government and the Emperor, aimed at the revision of Brazilian history and the construction of a new cultural identity for the country. The purpose of this paper is to examine some aspects of the libretto of Marília de Itamaracá and the ideas discussed in its preface, showing the contradictions and tensions involved in the creation of a “national” identity through operas
Shakespeare na Itália: construção intersemiótica de Re Lear e La tempesta em Giorgio Strehler
No full textTese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Estudos da Tradução, Florianópolis, 2014.O objetivo desta pesquisa reside em analisar o processo criativo e artístico do diretor italiano Giorgio Strehler na produção e direção de duas peças shakespearianas: Rei Lear e A Tempestade. As montagens teatrais, intituladas pelo diretor como Re Lear e La Tempesta, foram encenadas, respectivamente, em 1972 e 1978, no Piccolo Teatro de Milão, na Itália, e foram muito importantes para a sociedade italiana da época. Dessa forma, no estudo das produções italianas, busca-se explorar, com base nos conceitos de Tradução Intersemiótica, as passagens mais relevantes e/ou mais reveladoras para o contexto sóciopolítico italiano da época e que influenciaram, de alguma forma, a tradição shakespeariana na dramaturgia italiana. As análises mostraram que Strehler buscou, tanto em Re Lear, quanto em La Tempesta, evidenciar a metateatralidade existente nas respectivas peças shakespearianas e, com isso, gerar uma reflexão acerca do teatro e sua função social, política, histórica e civil em determinada sociedade, tempo e espaço.Abstract : This research aims at analysing the creative and artistic process of the Italian diretor Giorgio Strehler in the production and direction of two Shakespearian playtexts: King Lear and The tempest. The Italian productions -- entitled Re Lear and La Tempesta -- were staged, respectively, in 1972 and in 1978, at Piccolo Teatro di Milano, Italy, and were important to the Italian society of the time. Thus, in the analysis of the productions, I attempted to explore, based on concepts of Intersemiotic Translation, the most revealing and/or relevant passages to the Italian socio-political context of the time that influenced, in a way or another, the Shakespearian tradition in Italian dramaturgy. The analyses have shown that Strehler attempted to highlight -- in both productions -- the metatheatricality that exists in these Shakespearian playtexts and, from this perspective, encourage a reflection upon theater and its social, political, historical, and civic functions in a certain society, time, and space
Photonic heat amplifier based on a disordered semiconductor
No full textA photonic heat amplifier designed for cryogenic operations is introduced and analyzed. This device comprises two variable-range-hopping reservoirs connected by lossless lines, which allow them to exchange heat through photonic modes. This configuration enables negative differential thermal conductance, which can be harnessed to amplify thermal signals. To achieve this, one reservoir is maintained at a high temperature, serving as the source terminal of a thermal transistor. Concurrently, in the other reservoir, we establish tunnel contacts to metallic reservoirs, which function as the gate and drain terminals. With this arrangement, it is possible to control the heat flux exchange between the source and the drain by adjustment of the gate temperature. We present two different parameter choices that yield different performances: the first emphasizes modulation of the source-drain heat current, while the second focuses on the modulation of the lower-temperature variable-range-hopping reservoir. Lastly, we present a potential design variation in which all electronic reservoirs are thermally connected through only photonic modes, allowing interactions between distant elements. The proposed photonic heat amplifier addresses the lack of thermal transistors and amplifiers in the millikelvin range, while being compatible with the rich toolbox of circuit quantum electrodynamics. It can be adapted to various applications, including sensing and the development of thermal circuits and control devices at subkelvin temperatures, which are relevant to quantum technologies
Photonic negative differential thermal conductance enabled by NIS junctions
No full textDue to their sensitivity to temperature variations, normal metal–insulator-superconductor (NIS) junctions are utilized in various thermal devices. This study illustrates that two NISIN reservoirs can achieve a measurable negative differential thermal conductance (NDTC). This phenomenon is enabled by photon-mediated heat exchange, which is profoundly affected by the temperature-dependent impedance matching between the reservoirs. Under suitable configurations, the heat current is suppressed for increasingly large temperature gradients, resulting in NDTC. We also propose experimental configurations that allow for the unambiguous discrimination of this effect. We employ superconducting aluminum in conjunction with either silver or epitaxial InAs to facilitate the experimental observation of NDTC at low temperatures over significant sub-Kelvin ranges. This advances the development of devices that exploit NDTC to enhance the regulation of heat and temperature in cryogenic environments, such as thermal switches, transistors, and amplifiers
Cryogenic behavior of high-permittivity gate dielectrics : the impact of atomic layer deposition temperature and the lithographic patterning method
No full textDielectrics featuring a high relative permittivity, i.e., high-k dielectrics, have become the standard insulators in gate architectures, enhancing the electrical performance of both room temperature and cryogenic electronics. This study delves into the cryogenic (3 K) performance of high-k dielectrics commonly used as gate insulators. We fabricated Al2O3 and HfO2 layers via atomic layer deposition (ALD) and extrapolated relative permittivity (k) and dielectric strength (EBD) from AC (100 Hz-100 kHz) and DC measurements on metal-insulator-metal capacitors. Our findings reveal a strong dependence of HfO2 cryogenic performance on ALD growth temperature, while the latter shows a negligible impact on Al2O3. We estimated similar to 9% and similar to 14% reductions in the relative permittivities of HfO2 and Al2O3, respectively, at temperatures from 300 to 3 K. Additionally, we designed and fabricatedAl(2)O(3)/HfO2 bilayers and checked their properties at cryogenic temperatures. The study also investigates the impact of the patterning method, namely, UV or electron-beam lithography (acceleration voltage of 10, 20, or 30 kV), on the high-k dielectric properties. (c) 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(https://creativecommons.org/licenses/by/4.0/)
Psammoecus simoni Grouvelle 1892
No full textPsammoecus simoni Grouvelle, 1892 (Fig. 11) Psammoecus simonis Grouvelle, 1892: 287. Psammoecus simoni – Grouvelle 1908c: 476.— Pal 1985. Material examined Lectotype ♂, by present designation: ‘ Antipolo | E. Simon’, ‘TYPE’ [red label], ‘MUSEUM PARIS | 1917 | Coll. GROUVELLE’ [yellow label], ‘ Psammoecus | Simoni | ty. A. Grouv’ [Grouvelle’s hand] (MNHN). Paralectotype 1 spm with identical data as lectotype (MNHN). Other material 5 spms ‘COLL: MUS. CONGO | Madagascar: Maroansetra | (à la lumière) II/ IV-1950 | J. Vadon’ (MRAC). 1spm ‘COLL. MUS. TERVUREN | N.E. Madagascar: | Ambodivoangy 1959 | J. Vadon’ (MRAC). Differential diagnosis Ps. simoni differs by its short oval habitus and the short, stout parameres that are fused with the basal piece from all other African Psammoecus. The wide-based pronotal teeth resemble Ps. luchti sp. nov., it differs by the elytral striae being considerably wider than interstices, elytra being shorter, darkened basis of elytra, parameres short, stout and fused with basal piece. Redescription BODY. Oval, total length 2.13-3.00 mm (Fig. 11A). Surface yellowish-brown, sometimes reddish-brown, elytra with brown or blackish-brown maculae: humeral swelling, a transverse band in the middle of the elytra, the elytral suture along the posterior two thirds and the elytral apex are dark. Base of antennae yellowish or reddish brown, 6 th to 10 th antennomere darkened, 11 th antennomere yellowish-white, some specimens with light apex of 10 th antennomere. HEAD. Broad, temples narrowed immediately behind eyes; width 0.64-0.71 mm, length 0.33-0.44 mm, 1.67-1.73 times as wide as long. Eyes protuberant, rounded, 0.17-0.20 mm long, distance of inner margins 0.38-0.45 mm. Puncturation on vertex coarse, density of punctures variable, pubescence composed of long, semierect setae, directed anteriorly; microsculpture absent. Longitudinal impressions on vertex very shallow, attaining the middle of the eyes, sometimes shorter. Antennae as in Fig. 11B, 1.17-1.40 mm long, stout, antennomere proportions of lectotype as follows: 2.9: 1.3: 1.8: 1.5: 1.8: 1.6: 1.4: 1.0:1.2: 1.4: 2.8. PRONOTUM. Broad; width 0.62-0.74 mm, length 0.48-0.56 mm, 1.22-1.35 times as wide as long. Surface smooth, without impressions. Anterior angles with distinct groups of small teeth; lateral margins with four distinct teeth; tooth I very small, tooth II a little larger, teeth III and IV largest. Posterior group of teeth consisting of a larger anterior tooth and a very small, almost obtuse posterior tooth. Puncturation coarser than on vertex, punctures sometimes adjoining. Pubescence as on vertex; microsculpture absent. ELYTRA. Oval, short, length 1.35-1.70 mm, combined width 1.00- 1.23 mm, 1.27-1.43 times as long as their combined width. Rows of punctures on disc wider than interstices. Pubescence consists of long, semierect setae. Microsculpture absent. PARAMERES. Short, stout, fused with basal piece; with distinct pattern of three large setae (Fig. 11 C). Remarks In his original description, Grouvelle (1892) spells the name ‘simonis’. However, on the labels that Grouvelle added to the syntypes as well as in a later paper (Grouvelle, 1908c), he spells the name ‘simoni’. Pal (1985) also uses the latter spelling. Hence the present author considers ‘simonis’ to be a misprint and proposes to spell the name in accordance with Grouvelle (1908c) and Pal (1985).Published as part of Karner, Michael, 2012, A revision of African Psammoecus (Coleoptera, Silvanidae) and descriptions of two new species from the collection of the Musée royal de l'Afrique centrale, pp. 1-31 in European Journal of Taxonomy 17 on pages 24-26, DOI: 10.5852/ejt.2012.17, http://zenodo.org/record/385784
Gate Control of the Current–Flux Relation of a Josephson Quantum Interferometer Based on Proximitized Metallic Nanojuntions
No full textWe demonstrate an Al superconducting quantum interference device in which the Josephson junctions are implemented through gate-controlled proximity Cu mesoscopic weak links. This specific kind of metallic weak links behaves analogously to genuine superconducting metals in terms of the response to electrostatic gating and provides a good performance in terms of current-modulation visibility. We show that through the application of a static gate voltage we can modify the interferometer current–flux relation in a fashion that seems compatible with the introduction of π-channels within the gated weak link. Our results suggest that the microscopic mechanism at the origin of the suppression of the switching current in the interferometer is apparently phase coherent, resulting in an overall damping of the superconducting phase rigidity. We finally tackle the performance of the interferometer in terms of responsivity to magnetic flux variations in the dissipative regime and discuss the practical relevance of gated proximity-based all-metallic SQUIDs for magnetometry at the nanoscale
Cuando el Campo Refleja la Sociedad: una reseña de El fútbol brasileño – institución cero: de Simoni Lahud Guedes
No full textO livro O futebol brasileiro: instituição zero, de Simoni Lahud Guedes, resgatado após o incêndio do Museu Nacional, é uma obra pioneira na Antropologia do Esporte. Com base em sua dissertação de mestrado de 1977, Guedes analisa o futebol como fenômeno social, indo além do lazer, e o compreende como representação simbólica da identidade brasileira. Dividida em quatro capítulos, a obra percorre temas como o lazer, a dinâmica do jogo, a atuação da imprensa nas Copas e a relação do futebol com operários urbanos de Bangu. A autora oferece uma etnografia sensível do campo de jogo, destacando a imprensa como produtora de discursos que ora unem, ora racializam a derrota. Ao final, defende o futebol como instituição multifacetada e campo fértil para estudos sociais. A reedição da obra é tanto um tributo à autora quanto uma contribuição atemporal aos estudos do futebol no Brasil.The book The Brazilian Football: Zero Institution, by Simoni Lahud Guedes, rescued after the fire at the National Museum, is a pioneering work in the Anthropology of Sport. Based on her 1977 master\u27s thesis, Guedes analyzes football as a social phenomenon that goes beyond leisure, interpreting it as a symbolic representation of Brazilian identity. Divided into four chapters, the work explores themes such as leisure, the dynamics of the game, the role of the media during World Cups, and the relationship between football and urban workers in Bangu. The author offers a sensitive ethnography of the game field and highlights how the press produces discourses that either unify or racialize defeat. In the conclusion, football is portrayed as a multifaceted institution and a fertile ground for social studies. The reissue is both a tribute to the author and a timeless contribution to football studies in BrazilEl libro El fútbol brasileño: institución cero, de Simoni Lahud Guedes, rescatado tras el incendio del Museo Nacional, es una obra pionera en la Antropología del Deporte. Basada en su tesis de maestría de 1977, Guedes analiza el fútbol como fenómeno social que va más allá del ocio, interpretándolo como una representación simbólica de la identidad brasileña. Dividido en cuatro capítulos, el libro aborda temas como el ocio, la dinámica del juego, el papel de la prensa en los mundiales y la relación entre el fútbol y los trabajadores urbanos de Bangu. La autora ofrece una etnografía sensible del campo de juego y destaca cómo la prensa produce discursos que, a veces, unifican y, otras veces, racializan la derrota. En la conclusión, el fútbol aparece como una institución multifacética y un campo fértil para los estudios sociales. La reedición es tanto un homenaje a la autora como una contribución atemporal a los estudios sobre el fútbol en Brasil
Estructura de la comunidad de poliquetos en un manglar de la costa norte de Brasil
No full textPolychaetes play an important role in the structure and functioning of benthic communities in mangroves; however, knowledge about these organisms in the Maranhão Amazon coast is scarcity. This study analyzed the ecological aspects of polychaete community in the Quebra Pote mangrove in Maranhão State. Four sampling campaigns were carried out during both rainy and dry periods between November 2013 and July 2014, using 100 meters long transects set perpendicular to the waterline at three zones 50 m between them. A total of 521 organisms were identified belonging to ten families and 15 species; Nephtys simoni, Notomastus sp., and Paraonis sp. represented 58.92 % of all samples. Mobile deposit-feeders polychaetes were dominant and abundant. The Quebra Pote mangrove showed high values of diversity and evenness. The spatial distribution indicated that several species such as Capitella sp., Heteromastus sp., N. simoni, Notomastus sp., Paradoneis sp., Paraonis sp., Scoloplostexana, Sigambra grubei, and Syllis gracilis magellanica were present in all mangrove zones. The diversity and abundance of polychaetes were greater in lower mesolittoral (Zone 1), with a dominance of Avicennia schaueriana. The abundance of polychaetes decreased along transects from the lower mesolittoral to upper mesolittoral areas, suggesting that the presence of domestic sewage effects supersedes the vegetation effectLos poliquetos desempeñan un importante papel en la estructura y funcionamiento de las comunidades bentónicas de manglares; sin embargo, el conocimiento sobre estos organismos permanece escaso en la costa amazónica de Maranhão, Brasil. Este estudio analizó los aspectos ecológicos de la comunidad de poliquetos del manglar Quebra Pote, Estado de Maranhão. Se realizaron cuatro recolectas durante el período de secas y lluvias, entre noviembre 2013 y julio 2014, se delimitó un transecto de 100 metros de longitud, perpendicular a la línea de agua, con tres zonas distantes entre sí de 50 m. Se cuantificaron 521 individuos distribuidos en diez familias y 15 especies; Nephtys simoni, Notomastus sp. y Paraonis sp., correspondieron al 58,92 % del total muestreado. Los poliquetos detritívoros móviles fueron dominantes y abundantes. El manglar Quebra Pote presentó elevados valores de diversidad y equidad. En la distribución espacial, se observó que varias especies estuvieron presentes en todas las zonas del manglar, por ejemplo Capitella sp., Heteromastus sp., N. simoni, Notomastus sp., Paradoneis sp., Paraonis sp., Scoloplos texana, Sigambra grubei y Syllis gracilis magellanica. La diversidad y abundancia de poliquetos fueron mayores en el mediolitoral inferior (Zona 1), con predominio de Avicennia schaueriana. A lo largo de las zonas se observó que la abundancia de poliquetos decrece del mediolitoral inferior hacia al mediolitoral superior, probablemente como consecuencia del desagüe doméstico, que suplantó el efecto de la vegetaciónThe authors are thankful to the National Council for Scientific and Technological Development–CNPq for the financial support provided through a research scholarship granted to the first author, which allowed the execution of this stud
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