Tesis sobre el tema "Compositore"
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Affortunato, Tiziana [Verfasser]. "Carlo Caproli compositore di cantate (Roma, 1608-1668) / Tiziana Affortunato". München : GRIN Verlag, 2021. http://d-nb.info/1231146842/34.
Texto completoSTELLA, GAETANO. "Un compositore erudito nel secondo Ottocento italiano: Pietro Platania (1828-1907)". Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2009. http://hdl.handle.net/2108/770.
Texto completoToday the memory of the Sicilian composer Pietro Platania (Catania 1828- Naples, 1907) is almost totally bound to his participation to the Messa per Rossini, promoted by Giuseppe Verdi between 1868 and 1869. But, from the reading of the newspapers, as well as the specialized press of his time, IT is clear that Platania was considered one of the most important musicians of his generation in Italy. What are the elements of this importance attributed to Platania from his contemporaries First of all, Platania was considered one of the most expert musicians in the theoretic and contrapuntal field according to the Neapolitan tradition. He was the best Pietro Raimondi’s pupil, as his own maestro declared, and he experienced all the most complicated kinds of the Neapolitan counterpoint that, starting with Raimondi’s works, flowed into a ‘gigantic’ conception. It is possible to look at this formulation in some of Platania’s works as the Psalm Exurgat Deus for 24 voices and symphony crchestra. He was a real scholar, if we consider his culture and his readings. He published some treatises (Corso complete di fughe e canoni, Trattato d’armonia etc.) that had a strong influence especially in the southern Italian conservatories. But Platania was a very interesting figure for various activities that he made in the second half of the 19th century. He wrote Operas (Vendetta Slava, Spartaco, etc) that were greatly appreciated and edited by the most important Italian Press as Ricordi and Sonzogno, Symphonic music, Chamber music (with beautiful chamber songs and very interesting quartets), and a lot of Sacred music, where he showed his own style characterized by the co-presence of the old observed style (through a typically romantic harmony), and a pronounced melodic fluency that was very typical in the 19th century Italian music. Despite all the elements I pointed out above, the musicological research completely ignored this interesting musician of the 19th italian century, apart from some rare contributes. The script, after a necessary biographical outline, points out some aspects of his work as theorist and composer, deepening the aspects belonging to the Neapolitan school of composition of which Platania was one of the latst- but not the least- eminent exponents.
Silva, Eliana Maria de Almeida Monteiro da. "Clara Schumann: compositora x mulher de compositor". Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/27/27158/tde-05072009-234006/.
Texto completoClara Josephine Wieck, or Clara Schumann after her marriage with composer Robert Schumann, was one of the very few prodigy-children who could keep their fame and recognition as virtuosi of the piano in their lifetime. The history of her long career as a pianist (63 years) reflects the musical life of the 19th century. Her name appears as being of great influence in the change of habits that occurred between her first public concert, in 1828, and the last, in 1891 - in terms of choice of repertoire, schedule of concert seasons, the roles played by the prodigy-child and the professional woman, besides her attitude towards the audience in relation to new musical propositions, at times very antagonistic. However, as a composer, her fame did not achieve the same proportions, in spite of her pieces having pleased not only the audience, but also great masters of her time, such as Robert Schumann, Félix Mendelssohn, Frederick Chopin, Franz Liszt and Johannes Brahms. The difficulties she faced during her life made her choose between creation and performance, making her stick to the latter, without any regrets. Her testimonies speaking of the practice of the instrument, the contact with the audience and the pleasure she gained in divulging works which importance she recognized (being a connoisseur of her métier) were part of her own essence as an individual. Besides, compositions made by women were not stimulated, nor even seriously taken into consideration in the first half of the 19th century. Clara Schumann herself had doubts on the quality of her works. This work intends to make visible that Clara Schumanns musical creation, left to a second plane by the composer herself, deserves to be acknowledged as the composition of an important composer of the 19th century, for it deals with the same issues proposed by her contemporaries in a very elaborate way. A brief commented narrative of her compositions and the analysis of her cycle of variations Op. 20 are proof of the excellence of her work.
Bandeira, Cirlene Fourquet [UNESP]. "Avaliação de frequências não convencionais na obtenção de curvas de DMA de compósitos poliméricos". Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/94383.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
O estudo do comportamento viscoelástico e das suas temperaturas de transições térmicas são imprescindíveis para que produtos sejam desenvolvidos, construídos e aplicados corretamente em cada setor de mercado. Assim, qualquer método analítico que vise à redução de tempo de laboratório, na análise de propriedades viscoelásticas de compósitos poliméricos, está contribuindo diretamente para a otimização de metodologia de avaliação de materiais estratégicos. Com isto, o presente trabalho tem como objetivo validar o método Synthetic-Oscillation (multiplex) na obtenção de curvas de DMA (análise dinâmico-mecânica). Este aplicativo computacional, (multiplex), realiza em um único ensaio, medidas do comportamento viscoelástico de materiais em diferentes frequências. As curvas, geradas através deste aplicativo computacional, foram comparadas com as curvas obtidas em experimento real (multifrequência), para se determinar estatisticamente a confiabilidade do método multiplex em medir as propriedades viscoelásticas de compósitos poliméricos. Uma vez dominada esta metodologia, avaliou-se a influência da exposição à radiação ultravioleta, à umidade e ao combustível aeronáutico, na temperatura de transição vítrea (Tg) dos compósitos poliméricos. Os resultados mostram que o método multiplex é tão eficiente quanto o método de multifrequência, na obtenção de curvas de DMA de compósitos poliméricos, com a vantagem de ser mais rápido. A Tg dos compósitos estudados foi afetada apenas pela exposição a umidade e a radiação UV
The study of viscoelastic behavior and its thermal transitions temperatures are essential to new products development, construction and property application in each market sector. Thus, any analytical method that aims to reduce laboratory time on analysis of viscoelastic properties of polymer composites, is directly contributing to the methodology optimization for evaluation of strategic materials. With this, the present study aims to validate the method Synthetic-Oscillation (Multiplex) to obtain curves of DMA (dynamic mechanical analysis). This computer application, (multiplex), in a single run, measures the viscoelastic behavior of materials at different frequencies. The curves generated by this computer application, were compared with the curves obtained in a real experiment (multifrequency), to statistically determine the reliability of the multiplex method to measure the viscoelastic properties of polymer composites. Once dominated this methodology, was evaluated the influence of exposure to ultraviolet radiation, humidity and jet fuel in the glass transition temperature (Tg) of polymer composites. The results show that the multiplex method is as efficient as the method of multifrequency, in obtaining curves of DMA polymer composites, with the advantage of being faster. The Tg of the composites studied was affected only by exposure to moisture and UV radiation
Freitas, Ricardo Luiz Barros de [UNESP]. "Fabricação, caracterização e aplicações do compósito PZT/PVDF". Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/100281.
Texto completoConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Um material compósito é constituído pela combinação de dois ou mais materiais, onde se procura sintetizar um novo material multifásico, e que abrigue as melhores características individuais de cada um de seus constituintes. Compósitos de polímeros (matriz) e ferroelétricos (inclusões) podem manifestar piezoeletricidade, ou seja, a produção de uma resposta elétrica devido a uma excitação mecânica, e vice-versa. Nesta tese o material polimérico usado para preparar os filmes ou lâminas de nanocompósitos é o PVDF, e, o material cerâmico é formado por nanopartículas de PZT. Ambos os materiais são dielétricos, porém, com características muito distintas (por exemplo, o PVDF tem aproximadamente 1/4 da densidade e 1/250 da constante dielétrica do PZT). O PZT é muito utilizado em transdutores, principalmente devido aos seus elevados coeficientes piezoelétricos, contudo, é quebradiço e sofre desgaste quando empregado na forma de filmes ou lâminas. Por outro lado, o PVDF é um polímero piezoelétrico que apresenta grande flexibilidade e excelentes resistências mecânica e química, porém, seus coeficientes piezoelétricos são apenas moderados. A fim de se aumentar a flexibilidade do PZT, mistura-se o pó cerâmico, na forma de nanopartículas, com o PVDF, também pulverizado. Na tese, evidencia-se que o compósito constituído por esta combinação cerâmica-polímero proporciona uma nova classe de materiais funcionais com grande potencial de aplicação, por terem combinadas a resistência e rigidez das cerâmicas, e, a elasticidade, flexibilidade, baixa densidade e elevada resistência a ruptura mecânica dos polímeros. O novo material tem grande resistência a choques mecânicos, flexibilidade, maleabilidade, e, principalmente, coeficientes piezoelétricos relativamente elevados. Amostras do compósito...
A composite material is constituted by the combination of two or more materials, which synthesizes a new multiphase material, and has the best individual characteristics of each of its constituents. Polymer composites (matrix) and ferroelectric (inclusions) can express piezoelectricity, i.e. the production of an electrical response due to a mechanical excitation, and vice versa. In this thesis the polymeric material used to prepare the films or slides of nanocomposites is the PVDF, and, ceramic material is formed by PZT nanoparticles. Both materials are dielectrics, however, with very different characteristics (for example, the PVDF is approximately 1/4 density and 1/250 relative permittivity from PZT). The PZT is widely used in transducers, mainly due to their high piezoelectric coefficients, however, is brittle and suffers wear and tear when employed in the form of films or slides. On the other hand, the PVDF is a piezoelectric polymer that offers great flexibility and excellent mechanical and chemical resistances, however, its piezoelectric coefficients are only moderate. In order to increase the flexibility of PZT, ceramic powder is mix, in the form of nanoparticles, with PVDF, also sprayed. In theory, it becomes evident that composite consisting of this ceramic- polymer combination delivers a new class of functional materials with great potential for application, because they combine the strength and rigidity of ceramics, and elasticity, flexibility, low density and high resistance to mechanical disruption of polymers. The new material has great resistance to mechanical shock, flexibility, suppleness, and, primarily, relatively high piezoelectric coefficients. PZT/PVDF composite samples were fabricated and characterized aiming to applications such as: piezoelectric actuators, acoustic emission detectors, and energy... (Complete abstract click electronic access below)
Corrêa, Marcos Kröning. "O fazer musical dos violonistas-compositores Dyens e Bogdanovic: relações entre performance, composicão, arranjo e improvisação". Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17898.
Texto completoA pesquisa doutoral realizada na Universidade de Aveiro sobre o “fazer musical” dos violonistas-compositores Roland Dyens (1955) e Dusan Bogdanovic (1955) através de estudo exploratório qualitativo observacional participante em masterclasses, recitais e ensembles em Festivais de Violão realizados na Europa, de outubro de 2012 a novembro de 2013, apoiado pelo estudo da totalidade da obra discográfica de Dyens e Bogdanovic entre os anos de 1979 e 2011. A investigação tem como eixo teórico os modos de ‘composição em performance’ desenvolvidos por Finnegan (1989) e as variáveis do “fazer musical” de Elliott (1995) em “performance”, “composição”, “arranjo” e “improvisação” para a análise qualitativa e quantitativa do “fazer musical” dos violonistas-compositores estudados na presente Tese. O percurso metodológico foi desenvolvido em 3 fases: Revisão de Literatura; Estudo Discográfico de Dyens e Bogdanovic e Pesquisa Empírica através de Estudo Observacional não Participante e Participante. Examino como Dyens e Bogdanovic articulam os tipos de “fazer musical” em situações presenciais, comparando-as com suas discografias. A Pesquisa Empirica foi realizada na França, Espanha, Liechtenstein e Sérvia, em 6 Festivais de Violão realizados nas cidades de Belgrado, Colmar, Paris, Sevilha e Vaduz. Dentre as principais contribuições da pesquisa: a) apresentação sistemática e inédita da totalidade das obras gravadas em discos por Dyens e Bogdanovic (perído de 33 anos) revelando as características e evolução do “fazer musical”de ambos; b) discussão e redefinição de modalidades e conceitos de “fazer musical” a partir da Revisão de Literatura, Estudo Discográfico e Pesquisa Empírica ; c) novas obras compostas, arranjadas e apresentadas no período da Pesquisa Empírica enquanto músico-participante em masterclasses com Dyens e Bogadanovic.
Doctoral research conducted at the University of Aveiro about the "music-making" of guitarist-composers Roland Dyens (1955) and Dusan Bogdanovic (1955) through exploratory qualitative observational study participant in masterclasses, recitals and ensembles in Festivals of Guitar held in Europe from October 2012 to October 2013, supported by the study of the entire record of work Dyens and Bogdanovic between the years of 1979 and 2011. The research has as theoretical axis composition modes in performance ' developed by Finnegan (1989) and the variables of "music-making" of Elliott (1995) on "performance", "composition", "arrangement" and "improvisation" for the qualitative and quantitative analysis of the guitarists-composers` music-making studied in this Thesis. The methodological path was developed in 3 phases: Literature Review; Dyens and Bogdanovic Discograph Study and Empirical Research through observational study non-participant and participant. It is examined how Dyens and Bogdanovic articulate the kinds of "music-making" in face-to-face situations, comparing them with their discographies. Empirical Research was carried out in France, Spain, Liechtenstein and Serbia, in 6 Guitar Festivals held in the cities of Belgrade, Colmar, Paris, Seville and Vaduz. One of the main contributions of this research: a) systematic and unprecedented presentation of all the works recorded on discs by Dyens and Bogdanovic (period of 33 years) revealing the characteristics and evolution of the "music-making" of both; b) discussion and redefinition of terms and concepts of "make music" from the Literature Review, Discographic Study and Empirical Research; c) new works composed, arranged and presented in the Empirical Research as a musician-participant in masterclasses with Dyens and Bogdanovic.
Getino, Diez Julia. "Els compositors entren a l'aula. Estudio de la intervención del compositor en el proceso de creación musical en la etapa de primaria". Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/666737.
Texto completoEsta tesis doctoral está contextualizada en un proyecto de innovación educativa en la etapa de educación primaria (6-12 años) que tiene por título “Els compositors entren a l’aula”. La experiencia parte de la audición y análisis de la obra de un compositor contemporáneo, trabajo a partir del cual los alumnos desarrollan un proceso de creación basado en algunos de los elementos musicales y recursos compositivos de la obra estudiada. Posteriormente, se produce la visita del compositor, quién escucha las creaciones de los alumnos y les invita a reflexionar, mejorar sus composiciones y avanzar a través del conocimiento profesional del experto. Luego, en posteriores sesiones, los niños reelaboran sus creaciones y las interpretan en un concierto final. La finalidad de esta investigación es estudiar la entrada del compositor contemporáneo en el aula de primaria en el proceso de creación y en el aprendizaje musical de los alumnos. Los objetivos del estudio son analizar la interacción entre el compositor y los alumnos, el rol del docente y la valoración de los alumnos, docentes y compositores sobre la visita del compositor y el proyecto. Los referentes que sustentan este estudio son los proyectos de colaboración entre docentes y artistas, así como su repercusión en el contexto educativo. La metodología es principalmente cualitativa y el paradigma interpretativo. El muestreo intencional lo componen cinco maestros con experiencia previa en música contemporánea y creación. Las técnicas de recogida de datos son la observación en el aula, el grupo de discusión, los cuestionarios y los encuentros no formales, lo que nos permite triangular la información obtenida. Como conclusión, los resultados sugieren que el trabajo cooperativo entre los niños y los compositores parece conducir a una experiencia significativa de aprendizaje musical a través del proceso creativo y la figura del experto. Por tanto, podemos decir que los indicadores de la experiencia son favorables. Ello nos hace suponer que la visita del compositor en el aula es muy beneficiosa para el aprendizaje musical de los alumnos y que el proyecto en el cual se inserta esta visita no solo es factible, sino que puede ser interesante expandirlo a la comunidad educativa.
This doctoral thesis is contextualized in a project of educational innovation in the stage of primary education (6-12 years) under the title “The Composers Enter the Classroom”. The experience starts with the audition and analysis of the work of a contemporary composer, a work from which students develop a process of creation based on some of the musical elements and compositional resources of the work studied. Subsequently, the composer visits the students and listens to their creations and invites them to reflect, improve their compositions and advance through the professional knowledge of the expert. Then, in subsequent sessions, the children rework their creations and perform them in a final concert. The purpose of this research is to study the introduction of the contemporary composer in the primary classroom in the process of creation and in the musical learning of the students. The objectives of the study are to analyse the interaction between the composer and the students, the role of the teacher and the assessment of the students, teachers and composers about the composer’s visit and the project. The references that support this study are the collaboration projects between teachers and artists, as well as their repercussion in the educational context. The methodology is mainly qualitative and the interpretive paradigm. Intentional sampling consists of five teachers with previous experience in contemporary music and creation. The techniques of data collection are the classroom observation, the discussion group, the questionnaires and the non-formal meetings, which allows us to triangulate the information obtained. In conclusion, the results suggest that cooperative work between children and composers seems to lead to a significant musical learning experience through the creative process and the figure of the expert. Therefore, we can say that the indicators of experience are favourable. This makes us suppose that the visit of the composer in the classroom is very beneficial for the students’ musical learning and that the project in which this visit is inserted is not only feasible, but it can be interesting to expand it to the educational community.
Campos, Kamila Amato de [UNESP]. "Fractografia quantitativa: análise do comportamento fractal de fratura em compósitos carbono/epóxi, por processamento digital de imagens". Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/94454.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Superfícies de fratura expressam a seqüência de eventos de liberação de energia com a propagação de trincas, mostrando a relação entre os componentes da estrutura, campos de tensões locais e a formação de texturas típicas em seu relevo. No caso dos compósitos de matriz polimérica, a evolução das formações topográficas pode indicar as linhas de ação de carga, os efeitos de degradação pelo ambiente ou os defeitos de processamento. Sendo assim, o objetivo deste trabalho é avaliar se as regiões de relevo formadas pelos diferentes mecanismos de propagação de trincas na fratura de compósitos termorrígidos, carbono/epóxi, podem ser relacionadas a diferentes valores de dimensão fractal, correspondendo à sua influência sobre a tenacidade. Os corpos-de-prova de compósito carbono/epóxi foram divididos em três grupos, sendo natural, com condicionamento higrotérmico e com condicionamento ultravioleta. As fraturas analisadas foram provenientes de ensaios DCB, em modo I de carregamento, sendo a aquisição das imagens feitas com o uso de microscópio óptico de reflexão e as topografias das superfícies obtidas pelo método de reconstrução por extensão de foco, calculando-se os valores de dimensão fractal com o uso dos mapas de elevações. A dimensão fractal foi classificada como: dimensão monofractal (Df), quando a fratura é descrita por um único valor; ou dimensão textural (Dt), que é uma análise macroscópica da fratura, combinada com a dimensão estrutural (Ds), que é uma análise microscópica. Os resultados demonstraram que não há relação entre Df e GIC, como proposto por Mecholsky, em seus trabalhos, não sendo esta medida uma propriedade do material. Quanto a Dt, esta medida não pode descrever qualquer propriedade do material, pois se restringe à descrição local do processo de fratura. Já Ds, descreve...
Fracture surfaces express the sequence of events of energy release with crack propagation, showing the relationship between the components of the structure, local stress fields and the formation of textures in his typical relief. In the case of polymer matrix composites, the evolution of topographic features may indicate the lines of action of load, the effects of degradation of the environment or processing defects. Therefore, the objective this work is to assess if the relief regions formed by different mechanisms of crack propagation in the fracture of thermosetting composites, carbon / epoxy, may be related to different values of fractal dimension, corresponding to its influence on toughness. Composite carbon / epoxy specimens were divided into three groups, namely natural, with hygrothermal conditioning and ultraviolet conditioning. The fractures were analyzed from DCB tests in mode I loading, with the acquisition of images by using an optical microscope and the surface topographies obtained by an extended depth-of-field method, calculating the values of fractal dimension with the use of elevation maps. The fractal dimension was classified as: monofractal dimension (Df), when the fracture is described by a single value, or texture dimension (Dt), which is a macroscopic fracture, combined with the structural dimension (Ds), which is a microscopic analysis. The results showed that there isn´t relationship between Df and GIC, as proposed by Mecholsky in his work, since this measure is not a material property. As for Dt, this measure cannot describe any property of the material, because it restricts the description of the process to local fracture conditions. In other way, Ds describes the micro-relief and is associated to the forces involved in the rupture of atomic bonds and, thus, to the association between micromechanics and microstructure... (Complete abstract click electronic access below)
Yanez, Jonathan Xavier Andrade. "O nativo-experimental: música experimental e seus contatos com a cosmologia nativo-ancestral da América do Sul". Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/27/27158/tde-22092016-134017/.
Texto completoThe thesis seeks to understand musical events derivate from the contact of the so called Experimental Music with musical realities of Indigenous Native-Ancestry of the South American continent. To do so, it performs a historical context of the evolution of musical experimentation since 1950, following a linear path to the present, which features work and research of active composers who have specifically addressed the relationship between music, indigenous worldview and shamanism within the process of sound/musical experimentation. In this context, it highlights the creation of cross-cultural relations, produced between two heterogeneous realities that, in contemporary times, complement each other. Finally this research presents the practical work, arising from the creation of graphic scores and verbal instructions, developed with the research group in improvisation and musical experimentation Orchestra Errante (ECA-USP), where are used conceptual and sound/musical elements forma indigenous native-ancestry of South America and eco-listening in regular practices of free improvisation, highlighting the difficulties and possible strategies for the conjunction between two antagonistic elements, native-experimental.
Franco, Ruiz Sara. "Evolución del repertorio para viola en la música de Rebecca Clarke". Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15521.
Texto completoEste trabajo supone una aproximación a la música para viola de la compositora inglesa de principios del siglo XX Rebecca Clarke, mediante la realización de un análisis desde una perspectiva tradicional de cinco de sus obras más representativas para el instrumento. A través de dos líneas de investigación paralelas, una teórica y una práctica, se realiza un estudio sobre el estilo musical y compositivo de la autora. Asimismo pretende examinar si existe algún tipo de evolución estilística con respecto a las etapas vitales en las que estas obras fueron compuestas. La investigación teórica se refleja en este trabajo, y la práctica con la realización de un recital final sobre esta música, cuya grabación se adjunta como anexo del presente estudio.
This project represents an approach to the music for viola by the English composer from the early 20th Century Rebecca Clarke, and also analyse from a traditional perspective five of her most representative pieces for this instrument. Through two parallel lines of research, one based on theory, the other one based on practice, I do a study on the author's musical and composition style. At the same time I try to examine if there is any kind of style evolution in regards to the main moments these pieces were composed. The theory research is reflected in this essay, and the practical research with a final concert about this music, which recording is attached with this work.
Procura-se neste trabalho uma aproximação à música para viola da compositora de começos de século XX Rebecca Clarke, por meio da análise, sob critérios e procedimentos tradicionais, de cinco das suas mais representativas obras para o instrumento. Através de duas vias de investigação, uma teórica e outra prática, realiza-se um estudo do estilo musical e compositivo da autora. Pretende-se, também, indagar na relação entre qualquer evolução estilística e as etapas vitais em que as obras foram concibidas. A investigação teórica recolhe-se neste texto. A prática materializa-se em um recital com a própria música, cuja gravação apresenta-se como anexo do presente estudo.
Pacheco, João Felipe Mota. "Influencia do tratamento superficial na resistencia a tração da união polimero de vidro-cimento resinoso". [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288172.
Texto completoTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: O objetivo deste estudo foi avaliar a influência de diferentes tratamentos na superfície do polímero de vidro Artglass (HERAEUS, Kulzer - Germany). Foi verificado também o efeito do agente de silanização (Porcelain Primer - BISCO, lnc. ltasca IL), do ativador superficial de compósitos (Composite Activator BISCO, lnc. ltasca IL) e do líquido para reparos do sistema Artglass na resistência à tração com o sistema adesivo All Bond 2 (BISCO, lnc. ltasca IL) associado ao cimento Choice Porcelain Venner System (BISCO, lnc. ltasca IL). Foram confeccionadas duzentos e quarenta amostras e divididas em 12 grupos com 20 amostras cada. Cada grupo foi submetido aos seguintes tratamentos: grupo 1 - jateamento com óxido de alumínio; grupo 2 - jateamento com óxido de alumínio e aplicação do Porcelain Primer; grupo 3 jateamento com óxido de alumínio e aplicação do Composite Activator; grupo 4 - jateamento com óxido de alumínio e aplicação do Artglass Liquid; grupo 5 - condicionamento com ácido fosfórico; grupo 6 - condicionamento com ácido fosfórico e aplicação do Porcelain Primer; grupo 7 - condicionamento com ácido fosfórico e aplicação do Composite Activator; grupo 8 condicionamento com ácido fosfórico e aplicação do Artglass Liquid; grupo 9 - condicionamento com ácido fluorídrico; grupo 10 - condicionamento COIIJ ácido fluorídrico e aplicação do Porcelain Primer; grupo 11 - condicionamento com ácido fluorídrico e aplicação do Composite Activator; grupo 12 - condicionamento com ácido fluorídrico e aplicação do Artglass Liquid. Após o tratamento, as amostras foram unidas em pares com auxílio do sistema adesivo e do cimento resinoso manipulados de acordo com as instruções do fabricante. Em seguida, os corpos-de-prova foram armazenados a 37 'GRAUS'C com umidade relativa do ar em 100%, durante 24 horas e, logo após, foram submetidos a 500 ciclos térmicos ajustados às temperaturas de 5'GRAUS'C, 37°C e 60°C, com duração de 30 segundos cada. Decorrido o período de 48 horas, os corpos-de-prova foram submetidos ao ensaio de tração em uma máquina de ensaio universal (Otto Wolpert Werke, Germany), a uma velocidade de 6 mm/minuto. As médias dos resultados obtidos foram: grupo 1 - 11,46 MPa; grupo 2 - 12,28 MPa; grupo 3 - 9,45 MPa, grupo 4 - 11,53 MPa; grupo 5 - 3,83 MPa; grupo 6 - 4,84 MPa; grupo 7 - 3,94 MPa; grupo 8 - 5,67 MPa; grupo 9 - 6,51 MPa; grupo 10 - 6,36 MPa; grupo 11 - 7,86 MPa; grupo 12 - 8,34 MPa. A seguir os resultados foram submetidos análise de variância e ao Teste de Tukey. Após os testes de resistência à tração as amostras foram examinadas em lupa estereoscópica com aumento de 16 vezes, onde foi verificado predomínio de fraturas coesivas do polímero de vidro para os grupos tratados com jateamento com óxido de alumínio. O efeito dos tratamentos de superfície foi analisado com auxílio de um microscópio eletrônico de varredura (Zeiss DSM 960, Germany). Os resultados indicaram que o maior valor de resistência de união foi obtido através do jateamento com óxido de alumínio associado ao agente de silanização. Nos demais grupos onde também foi realizado o jateamento com óxido de alumínio os valores de resistência de união foram superiores e diferentes estatisticamente, quando comparados aos outros grupos, com exceção da associação do ácido fluorídrico com o Composite Activator, que não diferiu do grupo 3. A análise através de M.E.V. das superfícies tratadas demonstrou um padrão morfológico mais favorável ao imbricamento micromecânico produzido com o jateamento com óxido de alumínio
Abstract: The purpose of this study was to evaluate the influence of different superficial treatment of glass polymeric material Artglass (Heraeus, Kulzer). The effect of the silane agent application (Porcelain Primer - Bisco, lnc., ltasca, IL), a superficial Composite activator mixture (Composite Activator - Disco, Inc., ltasca, lL) and also the Artglass Liquid was verified in the tensile strength with adhesive system AllBond 2 (Bisco, lnc., !tasca, lL) associated with the resin cement Choice Porcelain Venner System (Bisco, lnc., !tasca, IL). Two hundred and torty samples were made and divided into 12 groups. Each group contained 20 samples submitted to treatments: Group 1 sandblasting with aluminum oxide; Group 2 - sandblasting with aluminum oxide and Porcelain Primer application; Group 3 - sandblasting with aluminum oxide and Composite Activator application; Group 4 - sandblasting with aluminum oxide and Artglass liquid application; Group 5 - acid etching with phosphoric acid; Group 6 - acid etching with phosphoric acid and Porcelain Primer application; Group 7 - acid etching with phosphoric acid and Composite Activator application; Group 8 acid etching with phosphoric acid and Artglass Liquid application; Group 9 acid etching with hydrofluoridric acid; Group 10 - acid etching with hydrofluoridric acid and Porcelain Primer application; Group 11 - acid etching with hydrotluoridric acid and Composite Activator application; Group 12 - acid etching with. hydrofluoridric acid and Artglass Liquid application. Following the treatment, the samples were bonded into pairs with the adhesive system and the resin cement, applied according with the manufacturer's instructions. Then, the samples were stored in 37° with a relative humidity of 100% during 24 hours. Submitted into 500 thermal circles, adjusted to 5 'DEGREE'C, 37 'DEGREE'C and 60'DEGREE'C, lasting 30 second each. After 48 hours, the samples were submitted to a tensile strength test in a Universal test machine (Otto Wolpert Werke, Germany) with a crosshead speed 6 mm / minute. The average results were : Group 1 - 11,46 MPa; Group 2 - 12,28 MPa; Group 3 - 9,45 MPa; Group 4 - 11,53 MPa; Group 5 - 3,83 MPa; Group 6 - 4,84 MPa; Group 7 - 3.94 MPa; Group 8 - 5,67 MPA; Group 9 - 6,51 MPA; Group 10 6,36 MPa; Group 11 - 7,86 MPa; Group 12 - 8,34 MPa. ThereFore, the results were submitted to Anova and Tukey Test. Then the samples were examined in a stereoscopic magnifying glass (x16), where it was verified the prevailing of cohesive rupture of the Glass Polymer in the groups treated with aluminum oxide sandblasting. The efFect of the superficial treatments was analyzed by a Scanning Electron Microscopy. The results indicated that sandblasting with aluminum oxide associated with the silane agent attained the biggest value of the bond strength. ln groups where the aluminum oxide sandblasting was performed the values presented were higher and statistically significant comparing with the others groups, except the association between hydrotluoridric acid and Composite Activator, which did not differ from group 3. The analysis of the treated surface was made using the Scanning Electron Microscopy and showed a more suitable morphologic pattem to the micromechanic retention produced with aluminum oxide sandblasting
Doutorado
Doutor em Materiais Dentários
Abrahão, Ana Beatriz Ramos Moreira [UNESP]. "Otimização do processo de soldagem por resistência elétrica em compósitos PEI/fibras contínuas para aplicações aeronáuticas". Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/127942.
Texto completoAs matrizes poliméricas atualmente disponíveis para compósitos avançados têm evoluído progressivamente como alternativa para a indústria aeronáutica sendo que nos últimos anos diversas matrizes termoplásticas especiais e de alto desempenho mecânico vem sendo estudadas para utilização na fabricação de compósitos avançados. Dentre as matrizes termoplásticas mais utilizadas na área aeronáutica destaca-se a poli(éter-imida) (PEI) por apresentar baixo custo, boas propriedades mecânicas e ser de fácil manuseio. Por outro lado, um dos principais problemas da utilização de compósitos termoplásticos em aplicações estruturais consiste em sua união efetiva para a integração de componentes. Entre os diversos métodos disponíveis destinados à soldagem, a utilização do processo de soldagem por resistência elétrica vem sendo considerado como um dos mais promissores para união de compósitos. O presente trabalho tem como objetivo a otimização do processo de soldagem por resistência elétrica utilizando compósitos de matriz constituída do polímero termoplástico PEI reforçado por fibras contínuas de vidro, carbono e por um sistema híbrido constituído de fibras de carbono e de vidro, com foco em aplicações aeronáuticas. Para o desenvolvimento deste trabalho, foi utilizado um planejamento experimental para a determinação e otimização dos melhores parâmetros sendo aqui considerados tempo, corrente elétrica e pressão na soldagem de laminados em estudo. Além disso, foram avaliados 4 tipos de elementos resistivos (malhas metálicas de aço inox de 100, 200 e 300 mesh e fibra de carbono com bronze). Os melhores parâmetros de otimização foram determinados a partir de ensaios de Lap Shear. Baseando-se nos resultados encontrados quanto à otimização destes sistemas, foi concluído que para o compósito PEI/ fibra de vidro os melhores valores ...( Resumo completo, clicar acesso eletrônico abaixo)
Thermoplastic composites reinforced with continuous fibers are being studied in a wide range of applications, such as commercial use for their low cost and for engineering with higher associated value. Currently, available polymer matrices for advanced composites have been progressively developed as an alternative for the aeronautical industry and, in the latest years, several special and high performance thermoplastic matrices have been studied for their use in manufacturing advanced composites. Among the thermoplastic matrixes, the poly (ether imide) (PEI) should be highlighted due mainly to its low cost, good mechanical properties, and for being easy to be handled. Moreover, a major problem concerning the use of thermoplastic polymer composites for structural applications is their effectiveness in the integration of structural components. Among the methods available for welding these composites is the use of the electrical resistance welding process which has been considered as the most promising for joining composites. The present work aims to optimize the welding process using electrical resistance matrix composites, consisting of thermoplastic polymer PEI reinforced by glass fiber, carbon fiber and a hybrid system consisting of carbon fiber and glass fiber for aeronautical applications. For the development this work, an experimental design was carried out to determine optimal parameters of time, electrical current and pressure on the welding of the laminates used in this study. Also it was evaluate 4 types of resistive elements (metal mesh stainless steel 100, 200 and 300 mesh, and carbon fiber with bronze). The best optimization parameters were confirmed from the Lap Shear tests. From the main results of these optimization, it was concluded that, for PEI / glass fiber laminates, the best acquired experimental values of current, ... (Complete abstract click electronic access below)
Bueno, Viviane Lutz. "Caracterização reológica de suspensões concentradas termoplásticas para microfabricação por coextrusão de compósitos piezoelétricos em polietileno de baixa densidade". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/61372.
Texto completoThe process of microfabrication by coextrusion (MFCX) was investigated to obtain composites of lead zirconate titanate (PZT), through the fabrication of PZT fibers. The principle of this technique is the reduction of a preform formed of concentrated suspensions in the positions and proportions desired, into filaments thinner after passing through a die. Such materials must have the same rheological behavior so they can flow together, making the preform to suffer only a reduction in the cross section to pass through the capillary. The main material was a concentrated suspension of PZT powder and low density polyethylene (LDPE), which provides the thermoplastic characteristic for the mixture and improves the mechanical strength at green state. In the other hand, the fugitive material was changed from carbon black (CB) into microcrystalline cellulose (MCC), once with the use of CB, an inorganic residue was found after the step of debinding. Furthermore, the CB impurities could influence the piezoelectric properties of PZT, causing a drop in the polarization measured. The rheological characterization employed preforms with cross section geometry of a half moon, with a standard composition of 58 vol. % PZT. Meanwhile, the fugitive materials were studied using the following compositions: 25 vol. % CB + LDPE, 31 vol. % MCC + LDPE and 41% vol. MCC + stearic acid (ST) + LDPE. The filaments obtained were characterized and then compared to verify the influence of the fugitive material and the additives on the microstructure. The ability of the preform to maintain the balance of the dimensions and proportions after co-extrusion was also verified by image analysis. It was found that mixtures of MCC + LDPE and CB + LDPE were not able to flow simultaneously. Thus, the rheology was studied considering not only the viscosity but also the properties of slip on the wall of the capillary die. After changing the composition and process parameters, a good match between the materials could be obtained, which allowed the coextrusion in the shape of half moon, getting a constant and well defined reduction of the diameter.
Estevam, Giuliano Pierre [UNESP]. "Preparo, caracterização e aplicação do compósito PTCa (Titanato de chumbo modificado com cálcio)/PEEK (Poliéter éter cetona) como sensor de radiação". Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/100283.
Texto completoCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Apresenta-se nesse trabalho a preparação, caracterização e aplicação de um compósito na forma de filme com três concentrações diferentes de cerâmica, objetivando observar seu comportamento quando submetido a radiação ionizante (raios X) e não ionizante (infravermelho). Os compósitos são constituídos da cerâmica titanato de chumbo modificado com cálcio (PTCa) imersa em uma matriz polimérica constituída de poliéter éter cetona (PEEK). Os filmes foram obtidos por prensagem a quente. O compósito foi caracterizado com a medida do coeficiente piezoelétrico (d33), variando a concentração de cerâmica, a temperatura de polarização, a intensidade de campo aplicado e o tempo de polarização. Posteriormente, foi medido o coeficiente piroelétrico, perda dielétrica e permissividade dielétrica, para as três concentrações de cerâmica proposta. Para a amostra com 60% de cerâmica foi determinado a figura de mérito piroelétrica (FOM) e finalmente, nessa fase de caracterização, foi determinado o campo coercivo e a polarização remanescente através da curva de histerese ferroelétrica. Os resultados obtidos revelaram que a atividade piezo e piroelétrica do compósito são compatíveis com outros compósitos existentes e cerâmicas. Após a caracterização, o compósito foi submetido à radiação infravermelha próximo e à radiação X na faixa de ortovoltagem. Os resultados encontrados revelaram que o compósito responde na faixa de radiação ionizante e não ionizante revelando uma opção interessante como sensor.
The present work is regarding to preparation and characterization of a ceramic/polymer composite film with three different ceramic loadings. The target was to observe the composite behavior when ionizing (X-ray) and non-ionizing (infrared) radiations was applied on it. The composites were made of calcium modified lead titanate (PTCa) ferroelectric ceramic immersed in poly(ether-ether-ketone) (PEEK) polymer matrix by hot pressing the powders mixture. Characterization was made using the longitudinal piezoelectric coefficient (d33) measurement as a function of ceramic content, poling temperature, poling electric field and poling time. Pyroelectric coefficient, dielectric permittivity and dielectric loss, coercive field and remanent polarization were also measured. The pyroelectric figure of merit (FOM) for sample with 60 vol% of ceramic was determined. The values of piezo and pyroelectric coefficient obtained for this composite indicates that it is comparable with other composites reported in literature. The application of the composite as thermal transducer for near infrared and X-ray radiation showed a real possibility to use PTCa/PEEK composite film as radiation detector in a wide range of energy.
Conejo, Luíza dos Santos [UNESP]. "Obtenção e caracterização térmica de compósitos nanoestruturados de resina fenol-furfurílica/CNT". Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/123107.
Texto completoAs resinas fenólica e furfurílica possuem elevada densidade de ligações cruzadas e alto teor de carbono fixo, sendo, portanto, amplamente aplicadas na área aeroespacial, principalmente na obtenção de carbono vítreo. Apesar do domínio da produção de resinas fenol-furfurílica (FF) já se encontrar disponível em literatura, poucos dados a respeito de suas propriedades são publicados. Além disso, quase nenhuma informação pode ser encontrada a respeito da produção de compósitos nanoestruturados de resina fenol-furfurílica reforçada com nanotubos de carbono. Desta forma, o objetivo do presente trabalho é a obtenção de resina fenol-furfurílica e seus compósitos nanoestruturados com diferentes concentrações de nanotubos de carbono (0,1; 0,5 e 1,0 % m/m) e a caracterização térmica dos mesmos. Durante o desenvolvimento deste trabalho, as amostras foram avaliadas via calorimetria exploratória diferencial (DSC), visando obter informações a respeito do seu calor específico (cp); análise termomecânica (TMA) para obtenção do coeficiente de expansão térmica linear (α) e termogravimetria (TGA) para o conhecimento da temperatura de degradação térmica, tanto via análises reais como simuladas por software, conhecido como Highway Simulation. As análises de DSC mostram que os valores de cp tendem a aumentar com a temperatura até aproximadamente 150°C, a partir da qual tendem a decrescer. Além disso, a introdução dos CNT na resina FF aumenta o valor de cp até a concentração de 0,5%. O coeficiente de expansão térmica linear obtido pela técnica de TMA para a amostra de FF foi 33.10-6 °C-1. A introdução de CNT nas amostras de FF não afeta significativamente sua estabilidade térmica. Os valores encontrados de cp, α e temperatura inicial de degradação térmica para a resina FF são próximos aos valores da resina fenólica encontrados na literatura
Phenolic and furfuryl alcohol resins have a high density of cross-links and high carbon yield, and thus widely applied in the aerospace area, mainly in the vitreous carbon processing. The production of phenol-furfuryl alcohol resin (FF) is already available in the literature, however, few works report its properties. Furthermore, almost no information can be found regarding the production of nanostructured composites of FF/carbon nanotubes (CNT). In this way, the aim of this work is to obtain nanostructured composites of FF/CNT with different concentrations of carbon nanotubes (0.1, 0.5 and 1.0% w/w) and thermal characterization. The specimens were evaluated by differential scanning calorimetry (DSC), in order to obtain information regarding your specific heat (cp); thermo-mechanical analysis (TMA) for obtaining the linear thermal expansion coefficient (α) and thermogravimetry (TGA) to knowledge of the temperature of thermal degradation, either by actual analyses as simulated by software known as Highway Simulation. The DSC analysis shows that the samples studied show that cp values tend to increase with the increase of temperature up to 150°C. Furthermore, the introduction of the CNT in FF resin increases the value of cp up to a concentration of 0.5%. The coefficient of linear thermal expansion obtained by the TMA technique for sample FF was 33.10-6 °C-1. The introduction of the CNT samples FF does not affect its thermal stability. The values found in the analyses are close to the values of the phenolic resin in the literature
Garrigosa, Massana Maria Teresa. "Les compositores catalanes del segle XIX: Un impuls creador". Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/670264.
Texto completoThe aim of this work has been to search and go deeper into the lives and works of women composers in Catalonia in the nineteenth century, from the first one that we know of, Maria Dolors Vedruna, to the last one who is the object of this study, Maria Lluïsa Casagemas, the first woman that composed an opera, Schiava e Regina (1892), at the age of eighteen. At the beginning of the nineteenth century, there was an awakening of creative awareness in the women's universe of Catalonia. The economic development, the changes in the social structures and the participation of the bourgeoisie in decision-making bodies as important as education were part of the context that made it possible for these women to be not only very finely educated but also learned in the complete and complex sense of the term. The chapters of this thesis are structured in order to provide a general overview, both of the social and educational context of women in the nineteenth century and the life and work of these composers that developed a large part of their artistic creation during the Modernist period. Emphasis has been put on explaining the complexity of the political changes that took place throughout the century, and how they determined the different steps of women's rights development, which mostly took place from the second half of the nineteenth century onwards; from La instrucción en la mujer (1869), by the writer Dolors Monserdà, considered one of the first feminist manifestos, so strongly linked to the different spheres in which these women composers developed their work, the antislavery movement of Clotilde Cerdà, to the convinced and resolute demands of Carme Karr advocating women's vote in the magazine Feminal, in 1917, in the middle of First World War. In the thesis are presented the two different stages of this evolution of creative women in Catalonia. One appears in the context of the first half of the century, where three women composers stand out: Maria Dolors Vedruna, the best known one, Paulina Buxó and Cristina Àngel. In the second period, the number of women composers grew exponentially: about twenty-five composers with written works, for the most part released. From them we have chosen twenty that stand out for the quality of their artistic life and the considerable number of their works. We also refer to their lives in a much broader sense, for we cannot separate their artistic activity from their personal lives. Their creative impulse not only appeared in music, but also in their social and political concerns; many of them achieved a high degree of engagement that led them to begin innovative projects aimed at improving women's status. The methodology applied has been the collection of comprehensive documentation: going through newspaper and periodical libraries, in-depth research of sheet music in libraries and archives, drawing up a list of the works by each one of these women composers, as well as the search for information on them by means of the articles published on the occasion of the débuts of their compositions. Regarding the artists' lives, although there are very few biographies, we have pored over the extensive bibliography available, dictionaries and specialised articles, in order to verify and interpret this information. This analysis presents us with some women that brought about changes that played a major role in transforming different spheres such as artistic creation, teaching and social awareness
Stedile, Filho Paulo. "Comportamento mecânico de cilindros de carbono/epóxi processados por enrolamento filamentar para semieixos de transmissão". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/150563.
Texto completoThe automotive half shaft is usually a metallic-based component in which the torque is transmitted from the differential to the wheels. Unlike conventional half shafts, in composite half shafts there are several parameters to be improved, namely fiber orientation, stacking sequence, thickness and number of layers. In this study, composite cylinders for application in half shafts have been processed by filament winding in order to replace conventional steel parts by laminated composites with carbon fiber reinforced epoxy composites. For that, it must satisfy several parameters of the composite half shaft, such as critical speed, critical buckling torque and load carrying ability. A preliminary torsional test has been performed and three laminates were selected: [±22/±45], [±89/±45] and [±45]2. Carbon/epoxy cylinders were manufactured by filament winding process and radial and longitudinal compression tests were performed. Mechanical analysis has been accomplished by using analytical and numerical approaches, since the last one is based on the finite element method. Analytical results were compared with the numerical and experimental ones, presenting a good correlation between them. The cylinder [±45]2 has the best performance under torsional loading. For critical buckling torque, as well as radial and longitudinal compression, the laminate [±45]2 presented a satisfactory performance for the application, but not the best performance within the laminates. The main conclusion is that the laminate [± 45]2 has the best performance and the weight reduction of the composite half shaft developed using this laminate is of 47%, when compared to a steel-based shaft.
Ducept, Fabrice. "Prévision de la rupture des assemblages collés composite/composite et acier/composite". Poitiers, 1996. http://www.theses.fr/1996POIT2366.
Texto completoBaggio, Airton [UNESP]. "Aproveitamento dos resíduos de compósitos à base de resina poliéster e fibra de vidro". Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/90572.
Texto completoUniversidade Estadual Paulista (UNESP)
Nesta pesquisa estudou-se o aproveitamento dos resíduos de compósitos a base de resina poliéster insaturado e fibra de vidro provenientes dos processos de transformação: Moldagem por contato manual Hand lay-up, moldagem por projeção simultânea Spray-up e moldagem por injeção de resina Resin Transfer Moulding - RTM. As rebarbas de compósitos, oriundas das empresas transformadoras, são descartadas como lixo em aterros industriais ou clandestinos e levam décadas para se degradarem, poluindo, desta forma, o meio ambiente. A utilização destes resíduos pode conduzir ao desenvolvimento de uma nova tecnologia competitiva e sustentável. Este trabalho propõe a moagem e micronização das rebarbas de compósitos dando origem a um pó fino, contendo resina mais vidro, e substituição da carga mineral (calcita - CaCO3), tradicionalmente utilizada no processo RTM, por este pó, denominado pó de rebarba de compósito a base de resina poliéster e fibra de vidro. Confeccionaram-se placas de ensaios variando o tipo de carga, entre calcita e pó de rebarba, e a porcentagem em peso da carga na mistura com a resina. Em corpos-de-prova retirados das placas foram realizados ensaios de resistência à tração, resistência à flexão, resistência ao impacto e dureza. Complementarmente, foram realizados ensaios de densidade aparente das cargas, viscosidade da mistura, contração linear, exame microscópico e ensaio prático operacional, contribuindo para avaliar a proposta apresentada. Os resultados obtidos mostraram, que em alguns casos, ocorreram variações de propriedades. Em contrapartida expressaram-se fatores limitantes como por exemplo a viscosidade da mistura contendo pó de rebarba. Entretanto, pode-se afirmar que, tanto tecnicamente quanto operacionalmente, é possível a substituição do pó de calcita pelo pó de rebarba de compósito no processo de moldagem por injeção...
In this research the exploitation of the residues of composites was studied the resin polyester not saturated and fiber glass proceeding from the transformation processes: Molding for manual contact Hand lay-up, molding for simultaneous projection Spray-up and molding for resin injection Resin Transfer Moulding - RTM. The barbs of composites, deriving of the transforming companies, they are discarded as garbage in appropriate or clandestine places and take decades to be degraded, contaminating, of this form, the environment. The use it of these residues can lead to the development of a new competitive and sustainable technology. This work considers the milling and particle's formation of the barbs of composites giving origin to a fine dust, contend resin more glass, e substitution of the mineral load (calcite - CaCO3) traditionally used in process RTM for this dust, called dust of composite barb the resin base polyester and fiber glass. Plates of assays had been confectioned varying the type of load, between calcite and dust of barb, e the percentage in weight of the load in the mixture with the resin. In body-of-test removed of the plates assays of tensile strenght had been carried through, resistance to the flexion, resistance to the impact and hardness. Complementarily, assays of apparent density of loads had been carried through, viscosity of the mixture, linear contraction, microscopical examination and operational practical assay, contributing to evaluate the proposal presented. The gotten results had shown, that in some cases, had occurred variations of properties. On the other hand limitantes factors had been expressed as for example the viscosity of the mixture contends barb dust...(Complete abstract click electronic access below)
Roy, Annette. "Comportement mécanique en sollicitations monotone et cyclique d'assemblages collés composite-composite et composite-acier". Poitiers, 1994. http://www.theses.fr/1994POIT2257.
Texto completoZhao, Zaiming. "Phylogenetic implications of pollen morphology and ultrastructure in the Barnadesioideae (Asteraceae) and related taxa /". Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Texto completoJiménez, Carmona Susana. ""Fragmente-Stille, an Diotima" de Luigi Nono: escuchar lo imposible". Doctoral thesis, Universitat de Girona, 2015. http://hdl.handle.net/10803/671778.
Texto completoEn aquesta tesi ens acostem a Fragmente-Stille, an Diotima de Luigi Nono per a, partint de la seva anàlisi, anar rastrejant el que posa en joc aquesta obra per a quartet de cordes: les concepcions del so i del silenci implicades, la construcció espaciotemporal que genera, els seus vincles amb les altres obres i els textos del compositor, les ressonàncies amb els pensaments d’altres autors (músics, escriptors, filòsofs) i les implicacions polítiques que comporta tota aposta de món que és una obra d’art
Doctorat en Ciències Humanes, del Patrimoni i de la Cultura
Viana, Elias Ferreira [UNESP]. "O cancioneiro de Altino Pimenta: Belém 1921-2003". Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/95114.
Texto completoConsiderado um referencial artístico no cenário musical da cidade de Belém, Altino Pimenta (1921-2003) foi aclamado como um renovador do ambiente cultural e artístico do Norte do Brasil. Investigar seu trabalho como educador e compositor, bem como interpretar suas canções permite a análise não apenas de sua história pessoal, mas elucida um momento histórico do processo educacional e criativo da música do Norte do País. A história de Altino Pimenta pode, assim, contar-nos um pouco do que constitui a história musical em nosso país. Esse trabalho propõe um estudo analítico interpretativo de três canções de Altino Pimenta - Estrela, A uma gaivota, e Última carta. Os materiais utilizados foram partituras, bem como os registros em áudio e vídeo de execuções das canções realizadas pelo próprio compositor. As canções foram analisadas considerando-se a relação texto/música que, em Altino Pimenta, é uma questão importante devido, especialmente, a natureza dos poemas que musicou e a atenção dedicada aos elementos poéticos e lingüísticos que envolvem a composição da canção. Como modelo para a realização de análise interpretativa foram utilizados os estudos de Eduardo Oliva Campos, Luciana Nunes Kiefer e Martha Herr. Foram, ainda, utilizados dados biográficos do compositor e suas ações como educador, que permitiram uma análise que transcendeu às canções, mostrando-nos o contexto no qual formam compostas. Essa análise das canções, sustentada pela análise interpretativa e pela biografia de Altino Pimenta, permitiu a preparação para a performance das três canções que, adequadas á voz do tenor, são apresentadas como parte dos resultados obtidos nesse estudo.
Considered an artistic reference in the musical scene of the city of Belem, Altino Pimenta (1921-2003) has been acclaimed as responsible for renewing the cultural and artistic environment in northern Brazil. The process of investigating his work as an educator and composer, as well as performing his songs, not only allows for a deeper analysis of his personal biography, but also sheds light on a key historical moment of educational and creative process of northern Brazil's music. The history of Altino Pimenta, in that manner, can unfold many aspects of the history of our country. The main goal of this work is to provide an analytical and interpretative study of three songs by Altino Pimenta: Estrela (Star), A uma Gaivota (To a seagull), and Última Carta (Final letter). The source material comprises the song's scores, as well as oudio-only and video recordings of performances thereof by the composer himself. The analyses of the songs consider the textual/musical relation, which, in Altino Pimenta, is a important matter, considered especially the nature of the poems he set to music and the diligence with which he dealt with the poetic and linguistic elements involved in the process of the song composition. As a reference, this interpretative analysis makes use of the studies written by Eduardo Oliva Campos, Luciana Nunes Kiefer, and Martha Herr. Additionally, the composer's own biographical data, including his actions as an educator, allowed for an analysis that transcends the songs themselves, showing us the context in which they were composed. This fuller analysis, supported by the study of the songs and of Pimenta's biography, was the basis for preparing the performance of three songs, which, being adequate for a tenor's voice, are presented as a part of the final results of this study.
Oliveira, André Felipe de. "Síntese e caracterização de nanoestruturas de sílica SBA -16 contendo gadolinio-159 como potencial sistema nanoparticulado para o tratamento do câncer". CNEN - Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, 2013. http://www.bdtd.cdtn.br//tde_busca/arquivo.php?codArquivo=298.
Texto completoCancer is a leading cause of death worldwide, and malignant neoplasms of the lung, stomach, liver, colon and breast in greater numbers. And recently observed in the literature a large number of reviews where new materials, especially nanoparticle, has been studied as drug carriers and radioisotopes applied to cancer treatment. How mesoporous materials based on silica, thanks to its huge surface area and biocompatibility, have been studied intensively providing broad applications in various areas, the use of nanostructured silica SBA-16 might be a carrier specific radioisotope accumulate in the cells malignant. Thus the aim of this study is to develop in vitro studies using SBA-16 can selectively concentrate in malignant cells therapeutic amounts of the radioisotope Gadolinium-159 escorting them to death. This work was performed orderly synthesis of mesoporous silica, SBA-16 and incorporating the complex Gd-DTPA-BMA, as well as chemical and structural characterization. The techniques used to analyze the occurrence of the incorporation of the gadolinium complex in the silica matrix were elemental analysis (CHN), atomic emission spectroscopy (ICP-AES), infrared spectroscopy (FTIR), nitrogen adsorption (BET), small-angle X-ray scattering (SAXS) and thermogravimetric analysis (TG). To analyze the morphology of pure silica used the scanning electron microscopy (SEM) and transmission electron microscopy (TEM). By photon correlation spectroscopy (PCS) it was possible to obtain a measure of mean particle size, the polydispersity index (PDI) of the silica SBA-16, and the zeta potential by laser Doppler anemometry (LDA). The results of incorporation analyzed by ICP-AES indicated that the material SBA-16 had a higher rate of incorporation of gadolinium (93%). The release kinetics in simulated body fluid, showed considerable stability and low release (1%). The mesoporous silica SBA-16 showed cell viability in direct contact with cell culture. Samples with gadolinium incorporated in the silica matrix after irradiation showed no significant cytotoxic activity, implying that these studies should improved so that more research in nanobiotechnology are performed.
Bandeira, Cirlene Fourquet [UNESP]. "Obtenção e caracterização de compósitos de benzoxazina/fibra de carbono". Universidade Estadual Paulista (UNESP), 2015. http://hdl.handle.net/11449/127961.
Texto completoAo encontro das necessidades de um mercado cada vez mais exigente, uma série de novas resinas vem sendo desenvolvidas; dentre estas as resinas polibenzoxazinas, que constituem uma nova classe de resinas fenólicas termorrígidas, que vem superando as propriedades das tradicionais resinas epóxi e fenólica, quando aplicadas na indústria aeroespacial. Com isto, o presente trabalho tem como objetivo sintetizar a resina benzoxazina de alto desempenho denominadas oAI-a (benzoxazina orto-amida-imida), processar compósitos de benzoxazina/fibra de carbono via'Hand lay up', utilizando as resinas benzoxazina fenol-diamino difenil metano (P-DDM), a resina oAI-a e a resina benzoxazina comercialmente disponível (Epsilon 99100 RTM), via moldagem por compressão a quente, e caracterizar suas propriedades físico-químicas, tanto em condições secas como expostas a radiação ultravioleta, umidade e calor e querosene de aviação, dando subsídios para o domínio da produção e caracterização de novos materiais com aplicações aeroespaciais. Os resultados obtidos a partir deste trabalho foram comparados entre si e com as propriedades mecânicas e térmicas das tradicionais resinas epóxi e fenólica disponíveis na literatura. Os resultados mostram que os compósitos de resina benzoxazina Epsilon 99100 RTM e P-DDM apresentam boa consolidação, temperatura de transição vítrea em torno de 162°C, para a resina Epsilon 99100 RTM e 168°C para a resina P-DDM e boa estabilidade térmica. No caso dos compósitos obtidos com a resina Epsilon 99100 RTM, o condicionamento por imersão em água reduziu sua Tg em 12%, e até 4,5% para as amostras condicionadas em UV, quando comparadas com as amostras não condicionadas. Foi também observado que para as amostras expostas ao querosene de aviação houve um aumento do valor da Tg de até 3,5%, quando comparado com os ... (Resumo completo, clicar acesso eletronico abaixo)
A series of new resins have been developed meeting the needs of an increasingly demanding market, among these the polibenzoxazin resins which constitute a new class of thermoset phenolic resin, which is overcoming the properties of traditional epoxy and phenolic resins when applied in the aerospace industry. With this, the present work aims to synthesize high performance benzoxazine resin called oAI-a (ortho-amide-imide benzoxazin), process composite benzoxazin/carbon fiber via'Hand lay up'using the benzoxazin phenol resins diamino diphenyl methane (P-DDM), the resin oAI-a and the benzoxazine resin commercially available (Epsilon 99100 RTM) via compression hot molding and characterize their physical and chemical properties both under dry conditions and exposed to ultraviolet radiation, humidity and heat and jet fuel, helping it to control production and characterization of new materials with aerospace applications. The results obtained from this study were compared between themselves and with the mechanical and thermal properties of traditional epoxy and phenolic resins available in the literature. The results show that benzoxazine resin composites Epsilon 99100 RTM and P-DDM exhibit good consolidation glass transition temperature around 162°C to the resin Epsilon 99100 RTM and 168°C to the resin P-DDM and good thermal stability. In the case of the composites obtained with Epsilon 99100 RTM resin the conditioning by immersion in water its Tg was reduced 12%, and up to 4.5% for samples UV conditioned when compared to nonconditioned samples. It was also observed that for the samples exposed to aviation kerosene was an increase in the Tg value of up to 3.5% compared with the results obtained in nonconditioned samples. In addition, samples conditioned in water showed an increase of interlaminar shear strength(22%) compared to non-conditioned samples; while the samples immersed in jet fuel showed no significant variation in their performance
Fernández, García Rosa María. "La obra del compositor Joan Guinjoan". Doctoral thesis, Universitat Autònoma de Barcelona, 2001. http://hdl.handle.net/10803/5194.
Texto completoEnrique, Gras Germán. "O compositor frente à sua peça". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/31450.
Texto completoThis text is divided into two parts, the first dealing with the situation of the composer in front of his own work. Based on the tripartite model of semiology proposed by Jean Jaques Nattiez, a shift of the observer is proposed in order to provide an analytical tool to be used by the composer in the analysis of their own work. After the theoretical formulation, the first part concludes with a brief analysis of a piece of the portfolio presented as a first approach to the operation of the analytical model and an example of the issues with which at deals, such as material and musical objects. This analysis is followed by a compositional critique, which in turn gives rise to some comments on an other piece of the portfolio. The second part deals with the specific compositional problem that has been worked during the Masters investigation: namely, the relationship between time and form. At first a theoretical debate is established that in turn give rise to the analysis of another piece of the portfolio that exemplifies the performance of a device formally proposed as a possible solution to the binomial time/form.
FENG, DIANSHI. "Simulation of low-velocity impact damage in sandwich composites". Doctoral thesis, Università degli Studi di Cagliari, 2014. http://hdl.handle.net/11584/266475.
Texto completoChartier, Raymond E. "Composite shiptrack characteristics". Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA303153.
Texto completoZhang, Jie. "Multifunctional composite interphase". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-88763.
Texto completoBayat, Masoumeh. "Electromagnetic composite nanofibers". Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/39894.
Texto completoBota, Horatiu S. "Composite web search". Thesis, University of Glasgow, 2018. http://theses.gla.ac.uk/38925/.
Texto completoHarden, S. J. "Weighted composite likelihoods". Thesis, University College London (University of London), 2013. http://discovery.ucl.ac.uk/1388040/.
Texto completoLi, Min-Chung. "Thermoplastic composite consolidation". Diss., Virginia Tech, 1993. http://hdl.handle.net/10919/40036.
Texto completoPh. D.
Жигилій, Дмитро Олексійович, Дмитрий Алексеевич Жигилий, Dmytro Oleksiiovych Zhyhylii, Володимир Андрійович Хворост, Владимир Андреевич Хворост y Volodymyr Andriiovych Khvorost. "Laminated composite plates". Thesis, Видавництво СумДУ, 2004. http://essuir.sumdu.edu.ua/handle/123456789/22944.
Texto completoKenne, Pagui Euloge Clovis. "Combined composite likelihoods". Doctoral thesis, Università degli studi di Padova, 2013. http://hdl.handle.net/11577/3423023.
Texto completoLa verosimiglianza composita è una pseudo-verosimiglianza particolare costruita combinando adeguatamente validi oggetti di verosimiglianza relativi a piccoli sottoinsiemi di dati. Essa appare essere un’attraente alternativa alla verosimiglianza completa quando la sua computazione richiede troppo tempo o quando non può essere trattata a causa della complessa struttura di dipendenza nei dati. Dopo la breve introduzione contenuta nel primo capitolo, verrà introdotta nel secondo capitolo una condizione per la piena efficienza dello stimatore di massima verosimiglianza composita nelle famiglie esponenziali. Il nucleo della tesi è presentato nel terzo capitolo ed esplora la combinazione lineare di due tipi di verosimiglianza composita in una nuova funzione obiettiva mediante una costante da scegliere. Il primo tipo si basa solo sulle marginali bivariate mentre il secondo sulle marginali univariate. Vengono esplorate sia le proprietà esatte che le proprietà asintotiche. Le proprietà esatte conducono all'identificazione di una possibile strategia per trovare l'intervallo di valori ammissibili per la costante. Lo stimatore risultante gode di desiderabili proprietà asintotiche, come la consistenza e la normalità asintotica. Due esempi sono analizzati nel dettaglio, anche mediante studi di simulazione. Il quarto capitolo studia verosimiglianze di indipendenza pesate in un contesto di previsione. L’obiettivo è quello di determinare i pesi per ottenere una migliore previsione di un componente di interesse del vettore di dati. Viene considerata una procedura basata su cross-validation per affrontare l’argomento e, attraverso studi di simulazione, vengono evidenziate le situazioni in cui la verosimiglianza di indipendenza pesata funziona meglio rispetto alla verosimiglianza di indipendenza
Souza, Samia Danuta Brejão de [UNESP]. "Avaliação dos parâmetros de soldagem para compósitos de PPS/fibras contínuas com aplicações aeronáuticas". Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/94386.
Texto completoFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
O desenvolvimento da tecnologia dos compósitos poliméricos avançados tem como uma de suas funções a união de materiais que combinem características como: elevada resistência mecânica e rigidez aliadas à baixa massa específica. Um dos problemas principais de utilização de compósitos poliméricos em aplicações estruturais consiste em sua união efetiva para a integração de componentes. Neste sentido, estudos recentes mostram que a técnica de soldagem por resistência elétrica é um dos processos mais promissores para união de compósitos, por ser um método rápido e por necessitar de pouca preparação de superfície. Este trabalho tem como objetivo avaliar os melhores parâmetros de soldagem por resistência elétrica para laminados de PPS (poli(sulfeto de fenileno)) reforçados com fibras contínuas (vidro e carbono) e híbrido com aplicações aeronáuticas. Para esta finalidade, são avaliados os parâmetros mais adequados quanto ao tempo, corrente elétrica e pressão a serem utilizados no processo de soldagem. A caracterização dos materiais soldados é realizada por meio de ensaios mecânicos (lap shear), análises térmicas (DMA e TMA) e análise morfológica (microscopias óptica e eletrônica de varredura). Com a utilização do planejamento de experimentos, foi encontrado o melhor valor da variável resposta para cada laminado estudado, e desse modo a melhor combinação dos parâmetros de soldagem, sendo para o PPS/fibras de carbono (37,0A, 3,0MPa, 50,0s), para o PPS/fibras de vidro (32,0A, 1,85MPa, 175,0s) e para o laminado híbrido (38,5ª, 3,0MPa, 50,0s). Com relação à temperatura de transição vítrea dos compósitos, esta não foi afetada significativamente pelo processo de soldagem, viabilizando o método de soldagem estudado para a integração de componentes aeronáuticos
The technology improvement of advanced polymeric composites has as one of its functions the junction of materials that present unique properties such as high strength and stiffness allied with low density. One of the major problems of using polymer composites in structural application consists in the effective joint for integrating components. In this behalf, recent studies demonstrate that the technique of electrical resistance welding is one of the most promising for bonding composites, as a rapid method because it does not require much surface preparation. This work aims to evaluate the more appropriate parameters of electrical resistance welding for PPS (poly (phenylene sulfide)) laminates reinforced with fabric continuous fibers (glass and carbon) designed for aeronautical applications. For this purpose, the parameters will be evaluated leading into account time, electric current and pressure to be used in the welding process. The welded material characterization will be accomplished through mechanical testing (lap shear), thermal (DMA and TMA) and morphological analysis (using optical and scanning electron microscopes). Through the procedure of design of experiments, it was found the best value of the response variable for each laminate studied here, and thus the best combination of welding parameters, being for the PPS/carbon fibers (37.0 A, 3.0 MPa, 50.0s) for the PPS/glass fibers (32.0 A, 1.85 MPa, 175.0 s) and the hybrid laminate (38.5 A, 3.0 MPa, 50.0 s). In relation to the glass transition temperature of these composites, this was not significantly affected by the welding process, enabling the welding method for studying the integration of aeronautical components
Albuquerque, Albéria Cavalcanti de. "Estudo das propriedades de concreto massa com adição de partículas de borracha de pneu". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/16484.
Texto completoThe use of waste tire rubber particles in concrete has been studied by several researchers, because it constitute both an attractive alternative for the final disposition of these residues and offers a possibility to modify certain concrete properties that might contribute for a better performance in certain applications that require specific characteristics, such as increased deformation capacity and more ductile behavior than conventional concrete. These characteristics of rubberized concretes might be interesting because they reduce the risk of cracking when concrete is subjected to volumetric changes, as occurs with mass concretes. In this research, it was studied how the introduction of rubber particles would affect the mechanical, viscoelastic and thermal properties of mass concretes, with the aim to check if it is possible to obtain a composite less susceptible to cracking due to thermal effects. The mixtures were analyzed based on the following features: rubber content, granulometry and surface treatment applied to the tire rubber particles. The experimental program was performed in three stages. The first one involved a wide range of mixtures, with varying rubber contents. At this stage, basic tests were carried out in order to identify how effective surface treatments were in generating a good tire rubber/matrix interface as well as how much high tire rubber contents would impact the mechanical properties of the concrete. Samples were selected for microanalysis through scanning electron microscopy to correlate the quality of the rubber/matrix interface with mechanical characteristics. In the second stage, the mixtures that resulted in the best performance in the first stage were further studied. The effects of the addition of tire rubber particles on the properties related to tenacity and permeability of concrete were evaluated. During the third stage, the best two mixtures used in the first and second stages were selected in order to analyze the effect of the addition of rubber particles in the thermal, elastic and viscoelastic properties of concrete, as well as in the thermo mechanical behavior of structures made with this material. Additionally, some samples were subjected to tests for the assessment of features related to the durability of concrete. The results indicated that the best use of tire rubber on concrete, without reducing the mechanical properties, occurs for a 10% content of rubber particles of 1.5mm and 4.8mm, used in partial replacement of the river sand. Higher contents and smaller particles led to greater reductions of the mechanical properties and an increase in the trapped air content. There was no significant difference either in the microstructure or in the properties of the samples containing particles with and without surface treatment. The thermo mechanical analysis indicated that the use of concrete with tire rubber can be an efficient alternative to minimize the risk of cracking due to thermal effects, compared with a conventional concrete. Based on the results obtained until the age of 2 years, the consumption of 29 kg/m3 of tire rubber on concrete did not seem to affect the durability characteristics of the material.
Menezes, Eduardo Antonio Wink. "Calibração de modelo numérico para simulação do comportamento mecânico de cabos poliméricos reforçados por fibra de carbono". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/132637.
Texto completoWire ropes have been used since ancient times, especially in applications were the axial stress is high and flexural and torsional stresses are relatively low. Current application include bridges, offshore platforms, elevators, mine hoisting, cranes, among others. Study of their mechanical behavior encompasses many factors, bringing considerable complexity in the construction of numerical or analytical models that represent their behavior, including contact stresses between rods as they slide past one another, helical geometry, rotation of wires around the core when in extension (i.e. variation in helix angle) and also, for composite cables, the anisotropic behavior. In view of the unavailability of a comprehensive analytical solution, this work focuses on the calibration of a numerical model built on a finite element software incorporating factors commonly neglected by simplified analytical approaches. Tensile tests were performed on the core of carbon fiber composite cables, 1×10 geometry (nine rods surrounding the core), to evaluate its longitudinal elastic modulus and employed micromechanics theory to obtain the remaining engineering constants. The cable was then modeled under tensile stress, where one end was fully constrained and the other could not rotate but was free to move in the longitudinal direction. Under 4-point bending, where one end was free only to rotate, while the other was free to move in longitudinal direction and to rotate, whereas the remaining degrees of freedom were constrained. After that, sensitivity analysis of the main variables governing the problem was conducted, concluding that cable pitch, rod diameter and longitudinal elastic modulus of the rods are the most relevant parameters. Deviation between ultimate strain under tensile stress and displacement under bending numerically obtained with those from experiments were 10.8 % and 14.6 %, respectively. After the calibration process, which used Sequential Linear Programing to search for the design variables values that minimized error between numerical and experimental data, the finite element model could reproduce the tensile stress and bending behavior with deviations of 2.4 % and 0.1 %, respectively.
Silva, Saulo Gama. "A música dos pianistas de Salvador: sete compositores e suas práticas musicais". reponame:Repositório Institucional da UFBA, 2008. http://www.repositorio.ufba.br/ri/handle/ri/9158.
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Esse trabalho tem como objetivo geral investigar e contextualizar o fenômeno da criação musical por parte de pianistas compositores da cidade de Salvador (Ba) na atualidade. Como objetivo específico, visa publicar os seus depoimentos sobre a arte de tocar e compor música para piano e os seus perfis profissionais e artísticos. Visa ainda situar o fenômeno historicamente, ao abordar práticas referentes ao piano durante o século XIX, período em que o instrumento alcançou boa parte do mundo, incluindo a cidade de Salvador.A primeira parte da dissertação consiste na contextualização histórica realizada. Esta se inicia pela cultura pianística romântica européia, dirige-se à América, ao Brasil e finalmente à Salvador da mesma época. A segunda parte expõe o trabalho atual de sete pianistas compositores da capital baiana.
Salvador
Baird, Kristen. "The phylogenetics and biogeography of Leibnitzia (Asteraceae: Mutiseae) American species in an Asian genus /". Fairfax, VA : George Mason University, 2009. http://hdl.handle.net/1920/5628.
Texto completoVita: p. 48. Thesis director: Andrea Weeks. Submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Science and Policy. Title from PDF t.p. (viewed Nov. 11, 2009). Includes bibliographical references (p. 44-47). Also issued in print.
Bobos-Radu, Daniela. "Maria de Lourdes Martins: a análise e a interpretação das obras compostas para violino e piano". Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/23434.
Texto completoMaria de Lourdes Martins (1926 – 2009) representa uma figura da nova geração de compositores da vanguarda do século passado que deu um contributo musical muito importante para a cultura portuguesa. O projeto artístico é dedicado ao conhecimento acerca de Maria de Lourdes Martins, enquanto pianista, compositora e pedagoga. O objetivo passará por estudar os fatores motivacionais que definem o desempenho criativo nas suas obras e em que medida tais processos de escrita podem constituir-se cruciais para a promoção da criatividade musical no Portugal do século XXI. Nesse sentido, foi realizada uma análise pormenorizada dos conteúdos das obras e, em especial, a interpretação daquelas dedicadas ao violino e ao piano, da referida compositora. A abordagem das obras em apreço traduz-se, essencialmente, na revitalização das composições dedicadas ao violino. As obras selecionadas são a Sonata para piano e violino (1947-1948), o Prelúdio para violino e piano, dedicado ao mestre Croner de Vasconcelos (1951), a Sonatina para violino e piano (1955) e “Cromos” para violino e piano (1958). Em geral, estas quatro obras, escritas no espaço de uma década, denotam a presença de uma linguagem hesitante, com elementos harmónicos de várias proveniências (modalidade, tons inteiros, cromatismo livre), com ritmos e articulações por vezes tipicamente neoclássicos e com formas ora livres, ora influenciadas. Em matéria instrumental, na Sonata para piano e violino (1947-1948) a escrita pianística, sendo limitada do ponto de vista da idiomática instrumental, é mais interessante do que a escrita violinística propriamente dita, que explora pouco o instrumento de cordas - o título trai, aliás, a hierarquia dos instrumentos nesta obra: "Sonata para piano” e só depois “...e violino".
Maria de Lourdes Martins (1926 - 2009) was a figure of the new generation of avant-garde composers of the last century who gave a very important contribution to the Portuguese musical culture. The artistic project is dedicated to the knowledge of Maria de Lourdes Martins as a pianist, composer and pedagogue. The objective is to study the motivational factors that define the creative performance in the works of Maria de Lourdes Martins and to ascertain in what extent such writing processes can be crucial for the promotion of musical creativity in the Portugal of the 21st century. In this sense, a detailed analysis of the contents of the works and, in particular, the interpretation of those dedicated to the violin and the piano by the composer Maria de Lourdes Martins was carried out. The approach to the works in question is essentially the revitalization of the compositions dedicated to the violin. The works selected are: i) Sonata for piano and violin (1947-1948); ii) Prelude for violin and piano, dedicated to the Master Croner de Vasconcelos (1951); iii) Sonatina for violin and piano (1955); and iv) Cromos for violin and piano (1958). In general, the four works written during a decade, denote a hesitant language with harmonic elements of various origins (modality, whole tones, free chromatism), with rhythms and typically neoclassical articulations with free forms influenced. Regarding to instrumentation, the pianistic writing of the Sonata for piano and violin is limited from the point of view to the instrumental idiom, being more interesting than the violinistic writing, which explores the string instrument very little - the title also betrays the hierarchy of the instruments in this work: “Sonata for piano and”, afterwards, ... “violin”.
Egg, André Acastro. "Fazer-se compositor: Camargo Guarnieri 1923-1945". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/8/8138/tde-03032011-163716/.
Texto completoThis is a study from the letters of Camargo Guarnieri, the scores of his \"Work of disseminating forbidden\" and other works composed between 1928 and 1945. In the letters and in the scores are the testimony of a relation with teachers of composition and the intellectuals and critics with whom Guarnieri has worked in the making of a composer himself. Lamberto Baldi, Mario de Andrade, Curt Lange, Luiz Heitor, Charles Koechlin, Charles Seeger, Carleton Sprague Smith, Aaron Copland - were the privileged interlocutors of the process in which Guarnieri struggled to overcome the limitations of the Brazilian music scene. Establishing relations between musical work and the demands and comments raised by them, it was considered that the composition of the Symphony No. 1 in 1942-44 and his debut in 1945 was the culmination to the making of a composer, whose career was built as a reflection and symbol of his musical scene, in relations of brasilian modernism, Vargas regime, \"americanismo musical\", and the Good Neighbor Policy and the interests of the classical music as business in USA.
Greene, Todd R. "Analytical modeling of composite-to-composite (scarf) joints in tension and compression". Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion-image.exe/07Jun%5FGreene.pdf.
Texto completoAzzam, Mai Ahmed. "Flexural strength comparison of monolayer resin composite to bilayer resin/ liner composite". Thesis, Connect to resource online, 2009. http://hdl.handle.net/1805/2077.
Texto completoTitle from PDF t. p. (viewed Feb. 5, 2010) Advisor(s): Jeffrey A. Platt, Chair of the Research Committee, Joseph Legan, Carl J. Andres, David Brown, Burak Taskonak . Curriculum vitae. Includes abstract. Includes bibliographical references (leaves 45-52).
Smith, Jay David. "Internal damage characterization for composite materials under biaxial loading configuration". Thesis, Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/smith/SmithJ0507.pdf.
Texto completoStevanović, Dejan. "Delamination properties of a vinyl-ester/glass fibre composite toughened by particle-modified interlayers /". View thesis entry in Australian Digital Theses Program, 2001. http://thesis.anu.edu.au/public/adt-ANU20030421.212730/index.html.
Texto completoSchlicker, Bruce M. "Composite suspension member analysis". Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4818.
Texto completoTitle from document title page. Document formatted into pages; contains ix, 78 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 74-75).
Hsieh, Feng-Hsu. "Nanofiber reinforced epoxy composite". Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1146149557.
Texto completoKim, Won Ki. "Composite production riser assessment". Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/5980.
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