66,220 research outputs found
Deep-water coralline algal rhodoliths forming an extensive pavement on the Brazilian continental shelf
No full textUma metáfora do Brasil: o Bem Amado e a teledramaturgia de Dias Gomes
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Sociologia Política.O Objetivo deste trabalho consiste em procurar analisar a rede de signos e símbolos, presente no pensamento social de Dias Gomes, acerca do tema da identidade nacional, detendo-se, principalmente, na análise de sua telenovela O Bem-Amado. Na história da teledramaturgia brasileira, o folhetim é paradigmático, por representar o momento de incorporação de temas relacionados à cultura brasileira. Concomitante a esse retrato do Brasil que as telenovelas passam a veicular, a partir do final da década de 60 e início da década de 70, observamos o progressivo crescimento da Rede Globo e sua consolidação enquanto rede de abrangência nacional e importante veículo de integração nacional
Olhos, mãos e rostos: a produção pictórica de Eduardo Dias na Florianópolis de 1890 a 1940
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências HumanasEste escrito é um estudo pelas evidências deixadas através das imagens em telas pelo pintor Eduardo Dias em uma Florianópolis correspondente ao período entre os anos de 1890 a 1940. Essas pinturas tornaram-se indícios de uma arte permanecida pelos olhos e mãos de um pintor preocupado em registrar a sua cidade e os rostos de seus habitantes. A iniciativa do artista abriu mais uma fresta de observação do passado através da sensibilidade peculiar de seus traços, cores e formas
Logarithmic variance profiles and the corresponding f-1 spectra of temperature fluctuations in turbulent Rayleigh-Bénard convection
No full textWe report experimental results for the temperature variance 2(z) and the corresponding frequency spectra P(f) in turbulent Rayleigh-Bénard convection (RBC) in a cylindrical sample of aspect ratioT= D/L = 1:00 (D = 1:12 m is the diameter and L = 1:12 m the height). The measurements were conducted in the Rayleigh-number range 1011 < Ra < 1:35 1014 and Pr ' 0:8. For Ra = 1:35x1014, 2(z) could be described well by a logarithmic dependence on the vertical position z in a range of z 1 < z < z 2 with z 1 ' 70 and z 2 = 0:1L. Here L=(2Nu) is the thickness of a thin thermal sublayer adjacent to the horizontal plate where the heat flux (denoted by the Nusselt number Nu) is carried mostly by thermal diffusion. In the log layer, we found that the temperature spectra had a significant frequency range over which P(f) f with close to 1. As Ra decreased, increased so that the log layer became thinner. At Ra = 2:05 1011, z 2 < z 1 and therefore there was no range for a log layer. Correspondingly, the temperature spectrum near the horizontal plate did not have the f1 scaling form either
Efficacy of a map on search, orientation and access behaviour in a hypermedia system
No full textMany researchers have proposed hypertext and hypermedia as superior learning environments over traditional linear-based approaches. At the same time, reports of disorientation amongst students working in these environments has become a topic of major concern. The study reported in this paper sets out to investigate the efficacy of the provision of maps on students' ability to search, orientation and access information in a hypertext-based learning task. The domain used required students to learn about the theory of tectonic plates. The results indicate that the greater use of maps led to less relevant searching behaviour and less effective search effort. In conclusion, it is argued that the concept of the spatial metaphor has not served the designers and students of hypertext and hypermedia environments well. Further, it is proposed that designers of non-linear learning environments would be better served by concentrating on the fundamental usability of their systems rather than attempting to introduce navigational aids, which themselves are a symptom of poor design
Numerical simulation of the buckling behaviour of stiffened panels: Benchmarks for assessment of distinct modelling strategies
No full textThis work deals with the effective modelling and simulation of the behavior of stiffened panels, when subjected to compressive (buckling) loads. Within the Finite Element Method, two numerical strategies are compared, namely the Riks method and the displacement incremental control method, including damping effects. The capabilities and limitations of both approaches are explored for two distinct benchmarks: a panel with a blade stiffener, and a panel with a T shaped stiffener. In both cases, material (plasticity) and geometrical (large displacements) nonlinearities are considered, together with a modelling strategy based on shell elements. Following previous works of the authors, each panel accounts for initial geometric imperfections coming from friction stir welding joining operations. The paper shows a number of considerations that must be undertaken when choosing between one of the two modelling strategies. Both benchmarks involve a number of challenges from the point of view of modelling unstable structural behaviors, and therefore the proposed benchmarks can represent a valid set of case studies in the understanding of the capabilities of current numerical simulation codes
Consórcios com potencial de uso como adubo verde no município de Paty do Alferes-RJ.
No full textFoi feito um experimento sob condições de campo no município de Paty do Alferes-RJ, com a finalidade de avaliar os efeitos dos consórcios, mucuna-preta (Mucuna aterrima) e crotalaria (Crotalaria juncea), consorciados com o milho (Zea mays cv. BR-116), na produção de fitomassa e acumulo de nitrogênio nas plantas dessas espécies e das plantas invasoras. O delineamento experimental foi O de blocos ao acaso, com quatro repetições e os três tratamentos: mucuna-preta + milho; crotalaria + milho e milho. A produção de fitomassa seca no tratamento só com milho foi significantemente (p<0,05) maior quando comparada com a produção do milho no consórcio, aproximadamente o dobro e nove vezes maior que nos consórcios com mucuna-preta e crotalaria respectivamente. No consórcio mucuna preta + milho, a leguminosa contribuiu com 61 % da produção da fitomassa seca, enquanto no consórcio crotalaria+ milho a contribuição foi de 89%. Não foi observado plantas invasoras nas parcelas do consorcio de mucuna-preta + milho. A fitomassa seca do milho nas parcelas sem consórcio apresentou um teor de N (0,69%) menor do que no milho consorciado com a crotalaria (1,36%) e com mucuna-preta (1,25%).0 teor de N da mucuna-preta (3,12%) no consórcio foi maior do que com a crotalaria (2,18%). A produção de N total do consórcio mucuna-preta + milho foi significantemente (p<0,05) maior 54 e 338% do que a do consórcio crotalaria + milho e do tratamento com milho, respectivamente, enquanto o tratamento crotalaria + milho superou o tratamento so com milho, em 185%. A produyao de N da mucuna-preta no consórcio foi 32% maior do que o da crotalaria. A mucuna-preta e a crotalaria no consórcio com o milho, num intervalo de 105 dias, do plantio até o corte, produziram cerca de 4,8 e 3,7 kg de N ha-1dia-1, respectivamente. Isto faz destas leguminosas um grande potencial para uso como adubo verde na região de Paty do Alferes-RJ. A field experiment was set up at the Municipality of Paty do Alferes, RJ, aiming the evaluation of intercropping the summer green manure velvet bean (Mucuna aterrima) and sunnhemp (Crotalaria juncea) with maize (Zea mays cv BR 116) on the biomass production and N accumulation in these species and in the weeds. The experimental design was in randomised blocks with four replications. The treatments were velvet bean + maize, sunnhemp + maize and maize. The dry mass production of the maize treatment was significantly higher (p<0.05) than maize intercropped with green manure. Maize only areas produced the double and nine-fold the dry mass accumulated by maize intercropped with velvet bean and sunnhemp, respectively. In the velvet bean maize intercrop the legume contributed to 61 % of total mass production while sunnhemp contributed to 89% of the total mass when intercropped with maize. There were no weeds in the plots with the intercrop of maize and velvet bean. The dry mass of maize in the pure maize plots had a N content (0.69%) lower than maize intercropped with sunnhemp (1.36%) and with velvet bean (1.25%). The N content in velvet bean (3.12%) was higher than that in sunnhemp (2.18%). The total N accumulated in the maize - velvet bean intercropping was 54% and 338% higher (p<0.05) than that accumulated in maize-sunnhemp intercropping and in pure maize crop, respectively, while the treatment maize-sunnhemp surpassed the pure maize treatment in 185%. The N production in velvet bean intercropped with maize was 32% higher than that in sunnhemp under the same condition. Velvet bean and sunnhemp intercropped with maize yielded respectively 4.8 and 3.7 kg N ha-1 day-1 during 105 days that comprised the planting-cut interval. This pointed out that these legumes have a strong potential to be used as green manure in the region of Paty do Alferes, RJ.Parceria: PESAGRO
Pedinotus tundisii Félix & Penteado-Dias, 2004, sp. nov.
No full text<i>Pedinotus tundisii,</i> sp. nov. (figs 1­4) <p> <b>Female</b>: Body color: head yellow with a black longitudinal stripe extending from antenna through occipital carina; palpi yellow; mesosoma black except scutellum and propodeum dorsally yellow; metasoma black dorsally, white laterally, brown to black ventrally; wings lightly dusky, veins and stigma brown, tegula yellow; fore and middle legs yellow, hind leg brown, middle and hind coxae black, fore yellow. Body length. 7.0 mm. Fore wing length 4.5 mm.</p> <p> <b>Head (fig. 1):</b> Face rugose, frons weakly striate and excavated, vertex and temple smooth; malar space 0.33 eye height; ocell­ocular distance twice diameter of lateral ocellus; 32­40 antennomeres; first flagellomere is larger than scape and pedicel combined.</p> <p> <b>Mesosoma (fig. 2):</b> Pronotum smooth, pronotal groove rugose mesoscutal lobes smooth; notauli scrobiculate meeting large rugose area; scutellum weakly rugose; mesopleuron including subalar groove smooth, sternaulus smooth; propodeum smooth laterally, areolate rugose dorsally, median and lateral carinae distinct with no areola.</p> <p> <b>Metasoma (fig.3)</b> First tergum areolate rugose, longer than apical width; second tergum with median semicircular area areolate rugose,1.3 wider at apex than long, lateral areas areolate; remaining four terga smooth on apical half, basal half areolate; ovipositor slightly greater than metasoma.</p> <p> <b>Fore wing (fig. 4)</b> Vein 1cu­a slightly post furcal; m­cu arising before 2RS.</p> <p> <b>Hind wing (fig. 4)</b> Vein r­m about 0.2 length of vein 1M.</p> <p> <b>Male.</b> Unknown.</p> <p> <b>Material Examined.</b> Holotype (DCBU); female, Brazil, SP, Peruíbe, Estação Ecológica Juréia­Itatins, 24°31´06´´S /47°1206´´W, sweeping vegetation, 5.V.2002; N. Wanderley Periotto col.</p> <p> <b>Comments.</b> This species is distinguished by the absence of a propodeal areola, the presence of distinct metasomal sculpture, as in <i>P. n i g e r</i>, the length of the first two tergites and the colour of the body.</p> <p> <b>Etymology.</b> This species is named for José Galízia Tundisi for his contributions to ecological research in Brazil.</p>Published as part of <i>Félix, F. C. & Penteado-Dias, A. M., 2004, from Brazil, pp. 1-4 in Zootaxa 602</i> on pages 2-4, DOI: <a href="http://zenodo.org/record/158331">10.5281/zenodo.158331</a>
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