976 resultados para Corpos


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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As potencialidades da escrita no conto “Os corpos cercados”, inserido em Os pregos na erva (1962), de Maria Gabriela Llansol, vêm à tona por meio de “cenas fulgor” (expressão da própria autora) e pela permeabilidade das fronteiras entre os gêneros literários, o que dá origem a um texto em que a forma narrativa conto dialoga com a poesia. Esse aspecto híbrido desloca a narratividade para a textualidade, pois se divisa um enredo que se constrói pela quase total ausência de acontecimentos, enquanto o processo de experimentação com a linguagem domina. O espaço textual sugere um campo de concentração que sobrepõe corpos, sons, ritmo e imagens. Nesse sentido, pretendemos mostrar, no texto da escritora portuguesa, de que forma a estrutura do conto é atingida pela saliência dos momentos líricos, uma vez que aspectos peculiares à prosa cedem espaço, no conto de Llansol, ao afloramento da sonoridade e da expressividade.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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O presente modelo de utilidade refere-se à configuração ou configurações de corpos-de-prova tubulares soldados e um dispositivo desenvolvido para induzir-lhes esforços combinados de tração e flexão a partir dos carregamentos axiais. Os corpos-de-prova são compostos por dois tubos metálicos (1, 2) aos quais são soldados dois tubos diversos (3, 4), posicionados diametralmente opostos e em diversos ângulos, preferencialmente em ângulos múltiplos de 15<198>. Refere-se ainda a um dispositivo para ensaio, ao qual são acoplados corpos-de-prova, de modo a permitir ensaios de resistência à fadiga sob esforços coplanares. Os braços do corpo-de-prova (8) são montados nos braços (9) do dispositivo. Pinos (10) são encaixados nos braços (9) e fixados.

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Compreendida basicamente pela placa suporte retangular (2) sustentada pelos parafusos (1), sobre a qual são apoiadas as paredes de sustentação (5) fixadas à placa (2) pelos parafusos (3), sendo que ditas paredes (5) possuem um furo para passagem do eixo (19), ancorado pelos rolamentos (18), cuja extremidade é provida do flange (20) fixado pelo parafuso (24), o acoplamento (21) e o flange (22) do motor, fixado pelo parafuso (23).

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The model used in Brazilian schools, based on both traditional and progressive education, transmits information without worrying to show the real meaning of things, and without taking into consideration the previous knowledge of the pupil. How to work with the contents of human knowledge in a meaningful way? One alternative way is the Methodology of Dialectical Mediation (MDM), which consists in four steps or pedagogical moments, rescuing, problem posing, systematizing and producing. This theoretical option considers the educational work as a relationship involving teaching, learning and contents, which are taken as independent moments tightly connected to the ongoing work, instead of isolated elements or static terms. The aim of the present work is to clarify the Methodology of Dialectical Mediation and develop a class proposal according to the MDM approach to the problem of the free falling bodies (gravity, material means and shape). To evaluate the methodology, questionnaires were applied after experiments, with the involvement of students at each predominant moment. The results suggested that the MMD, combined with experimental activity, is a tool that enhances the overcoming of immediate knowledge, allowing students to reach a better understanding of the scientific knowledge.

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O mexilhão-dourado (Limnoperna fortunei) é um bivalve de água doce pertencente à família Mytilidae. Originário de rios e arroios da China e do sudeste asiático, foi introduzido acidentalmente na América do Sul em 1991, no estuário do rio da Prata, provavelmente através de água de lastro. Como encontrou condições propícias para o seu desenvolvimento, se expandiu através dos rios Uruguai, Paraná e Paraguai, sendo atualmente o principal responsável pelo macrofouling em ecossistemas de água doce do continente. O presente estudo compreende uma área de grande extensão na bacia do Rio da Prata, onde foram amostrados pontos estratégicos nos rios Paraná (e seus principais afluentes), Uruguai e Paraguai. A partir de coletas de organismos do plâncton, realizadas por arrasto vertical, foram quantificadas as densidades de larvas de L. fortunei em cada local de amostragem. Assim, obteve-se um panorama atual da ocorrência do mexilhão, registrando-se, inclusive, alguns limites de sua distribuição. As densidades mostraram-se, no geral, elevadas, provavelmente em decorrência do período de amostragem (verão 2010), onde a atividade reprodutiva da espécie é maior devido às altas temperaturas. Porém, grandes variações ao longo da bacia foram registradas, o que pode estar relacionado ao grau de antropização, disponibilidade de substratos, velocidade da corrente, tempo de introdução, entre outras variáveis

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The objective of this work is to accomplish studies of mathematical modeling and computational simulation of oil spills in water bodies. For this reason, a case study in the region of the Port of Santos was developed using the softwares SisBAHIA and ADIOS2 for the simulation of different hypothetical scenarios of oil spilling on the surface of water, aiming to obtain information that contribute to the reduction of the possible environmental impacts that can be caused by such accidents. The results generated in the different simulations had shown that the obtained data can be extremely useful to subsidize the elaboration of mitigation plans, the mapping of risk areas or even the proposal of emergencial strategies in cases of real accidents, configuring the modeling and the simulation as important and modern tools for the environmental planning and management.

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As rochas intrusivas básicas associadas a Formação Serra Geral na porção sul do município de Rio Claro e norte de Piracicaba configuram geometrias na forma de diques e soleiras. Estes corpos estão associados à uma parte da Bacia Sedimentar do Paraná que foi deformada por eventos tectônico que resultaram em trends preferencias NW-SE, condicionando a estratigrafia, a intrusão e geometria dos corpos de diabásio e formação da estrutura domática do alto de Pitanga. Os corpos intrusivos tem em sua maioria a forma de soleiras e em menor quantidade a forma de diques. A compreensão destes corpos é importante para o entendimento da estratigrafia da área conhecida como domo de Pitanga na região de Rio e Piracicaba

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Befor the vast economical growth and wild scientific and technological development, the companies are demanding, more and more qualification and acting of the services rendered by their employees. Like this, tasks are restricted the they be done with excellence, because the companies are always controlling the worker's development. They are several the tools used by the companies, as acting indexes to control the course of the worker's activities or certain section, integrations for new employees with the objective to present the line of work of the company so that the new employee is framed in these patterns, trainings offered for the employees to carry out their services with quality and compromising, evaluations of year end in order to test the worker's knowledge and to demand better results, finally, the companies hope the employee integrates normativamente into the reality of the company, in way to contribute for the atingimento of the organizational strategies, always collecting for this to obtain the best results and contribute to the growth of the company. This way, that research will present a tool of control of the total quality applied in a company in Rio Clearing's city and that it is managed by an educador. They will be verified the objectives that the company has in relationship a this control, the worker's subjectivity as participant subject of the tool of control of the System of Administration of the Quality and the worker's different glances before these aspects throught an interview.

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In this work we have developed an apparatus in order to study the capture of asteroids by planets surrounded by a gas envelope during y-by, to do this we have brought an innovation by using a hydrodynamical gas. We began such project by studying particles trajectories with a code based on the analytical gas. After being used to this model we have started a process to elaborate a code which uses the gas in a numerical way. The hydrodynamical gas is described by equations which are not solved analytically. Therefore, it was used an algorithm able to model the gas by keeping all information of the gas in cells. Thus we have made a code to read such cell`s information and then to solve all calculations. Once this process is done, the program inform us all date about the simulated trajectories

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The industry generally has sought materials with high mechanical resistance, low density, thermal stability and corrosion resistance. In the aerospace industry, for example, the use of aluminum alloys, such as Al 2024-T351 and Al 7075-T7351, have become essential. However, the use of these materials often do not resulted in a satisfactory performance of the component, since the presence of cracks can cause total rupture of the component, even with a tension below the yield stress of the material, unexpectedly. In this work, these aluminum alloys were analyzed and samples were modeled by the finite element method. Moreover, in the models were applied two different types of cracks, central and edge crack, a vertical force was applied to result in a tension 70% of the yield stress of the material analyzed. Through stress asymptotic distribution in the region near the crack tip were calculated the values of the stress intensity factors for each crack length, after the stress intensity factors characterized were compared graphically with the values of fracture toughness found in the available literature

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The aim of this study was to evaluate the influence of specimen size, in comparison with the ISO Standard, on the three point flexural strength of resin composite restorative materials Filtek Supreme and Filtek Z-250. Forty specimens were fabricated for each material with the following length, width and thickness measurements (n = 10): 1) 20 × 2 × 2 mm (ISO 4049); 2) 10 × 2 × 1 mm; 3) 10 × 1 × 1 mm; 4) 8 × 0.8 × 0.8 mm. The composites were inserted in a single increment into two-piece metal device and light-polymerized. The specimens were dry stored at 37 ± 1 °C and protected from light for 7 days. After this period, flexural strength was measured by three-point flexure test using MTS 810 equipment, with a load cell of 10 kN at a speed of 0.5 mm/min. For the evaluated sizes, the results showed significant variability (p = 0.00) with values when compared with the ISO Standard (116.700 MPa), being statistically higher for the test specimens measuring 10 × 1 × 1 mm (142.530 MPa), similar for those of 10  ×  2  ×  1  mm (115.815 MPa) and lower for those of 8 × 0.8 × 0.8 mm (86.650 MPa). There was statistical equality (p = 0.08) for the studied composites (Filtek Supreme, 125.270 MPa; Filtek Z-250, 108.130 MPa). Specimens measuring 10 × 2 × 1 mm provided flexural strength values equivalent to those obtained in the sizes recommended by the ISO 4049 standard, with lower consumption of material, energy and time.