Energetic Matrix
Mostrando 1-12 de 37 artigos, teses e dissertações.
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1. Fragmentation model for the tensile response of unidirectional composites based on the critical number of fiber breaks and the correction of the fiber-matrix interfacial strength.
Abstract A fragmentation model based on global load sharing (GLS) theory is developed to obtain stress-strain curves that describe the mechanical behavior of unidirectional composites. The model is named C N B + τ * because it is based on the Critical Number of Breaks model (CNB) and on the correction of the fiber matrix interfacial strength, τ *
Lat. Am. j. solids struct.. Publicado em: 15/08/2019
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2. Desenvolvimento de tecnologia de pré-polímeros na síntese de poliuretanos empregados em combustíveis sólidos
The aim of this work was to synthesize a polyurethane polymer matrix using polyols as a raw material to obtain a binder such as the hydroxyl terminated polybutadiene (HTPB) pre-polymer in energetic material formulation. The soybean-based polyol was the best starting raw material for producing a binder for solid fuel formulation in rocket motor applications.
Quím. Nova. Publicado em: 2014-07
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3. Síntese de poliuretanos modificados por óleo de mamona empregados em materiais energéticos
The aim of this work was to synthesize a polyurethane polymer matrix using castor oil as a polymer chain modifier, whose characteristics can be adjusted for use as a binder in the manufacture of energetic materials such as propellant and pyrotechnics for aerospace use. We attempted the partial substitution of hydroxyl-terminated polybutadiene (HTPB), a pre-p
Quím. Nova. Publicado em: 2013
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4. Percepção pública das instalações nucleares / Public perception of nuclear installations
The key for nuclear renaissance is public acceptance. Facing energetic needs that occur around the world and lack of resources, the work of characterizing and proposing new models to represent public opinion is extremely important to all stakeholders. Even though public opinions study on risks is relatively recent, may approaches of this subject have been su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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5. Produtividade volumétrica de clones de Eucalyptus spp. na região do Polo Gesseiro do Araripe.
A vegetação nativa da Região do Polo Gesseiro do Araripe se encontra em contínuo processo de degradação, devido à intensa utilização dos recursos florestais pelas indústrias do Polo Gesseiro do Araripe. Assim, tornam-se importantes estudos de plantios florestais de Eucalyptus spp. na região para serem usados como fonte de energia. Objetivou-se nes
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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6. Incorporação de energia na vida útil de uma colhedora autopropelida de cana-de-açúcar / Energy embodiment in life cycle of a self-propelled sugarcane harvester
The energy subject is one of the main challenges of 21st century. The geopolitical and environment aspects, they are concern sources to the current economic model. Brazil presents advantages in comparison to the world due to the use of renewable energy. Since 2007, products from the sugarcane have assumed the first place as a renewable source in the Brazilia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/11/2011
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7. Evolução da produção, reservas e dos preços do petróleo, gás natural e biocombustíveis: a importância dos biocombustíveis no cenário mundial / Evolution of production, reserves and oil prices, natural gas and biofuels: the role of biofuels on the world stage
Este trabalho tem como objetivo estudar a indústria do petróleo, gás natural e biocombustíveis no contexto brasileiro e no mundial. Visa também analisar as vantagens e desvantagens dos biocombustíveis e seu possível impacto na indústria do petróleo, assim como os principais indicativos e projeções da indústria do petróleo, como reserva, produç�
Publicado em: 2011
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8. Quantificação das antocianinas majoritárias do açaí por cromatografia líquida de alta eficiência. / Quantification of the major anthocyanins of açaí by high performance liquid chromatography.
Açaí (Euterpe oleraceae Mart) is a fruit with a high energetic and nutritional value that presents high content of phenolic compounds, mainly anthocyanin pigments directly related to its color. Over the past few years the interest on these pigments has been intensified as many scientific studies demonstrate that the anthocyanins and their aglycones are bio
Publicado em: 2010
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9. Project finance: a type of financing applied to wind Ceará / Project finance: uma modalidade de financiamento aplicada a energia eólica do Ceará
This work emphasizes the importance of the eolic energy and demonstrates the eolic potential technically profitable in the Ceará State. It specifically investigates a financial modality named Project Finance, through its definitions, risks, advantages and disadvantages. It also demonstrates the role played by the Project Finance as an alternative of long te
Publicado em: 2010
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10. Avaliação do potencial da casca de Eucalyptus spp. para a produção de bioetanol / Evaluation of the potential use of Eucalyptus spp. bark for bioethanol production
The use of no fossil source for biofuels production has been stimuled in the all world. Proposing a new global scenario related to the energy matrix, together with the environmental conditions, there is the need to search alternative renewable raw materials. In this context, Brazil presents special conditions, considering the lignocellulosic residues from th
Publicado em: 2010
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11. Simulação da geometria e do desempenho do detector de antineutrinos do Projeto Angra / Simulation of the design and performance of the detector antineutrinos Angra Project
In this work is presented a comparative study between some geometries for the Neutrinos Angra Project detector. This Project was born from a colaboration that is dedicated to the construction of a compact antineutrinos detector for monitoring, in real time, the thermal power of Angra II nuclear reactor. Through the antineutrinos ux is possible to get informa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/11/2009
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12. Rheology of suspensions with aluminum nano-particles
Abstract: Nano-scale aluminum particles are innovative materiais increasingly used in energetic formulations. In this contribution, the rheological behavior of suspensions with either paraffin oil or HTPB as the matrix fluid and nano-scale aluminum (ALEX) as the dispersed phase is described and discussed. The paraffin oil/aluminum suspensions exhibit non-New
J. Aerosp. Technol. Manag.. Publicado em: 2009-06