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Itens para a visualização no momento 11-20 of 24
Análise fluidodinâmica de biorreator destinado à produção de hidrogênio utilizando CFD
(2015-02-23)
Due to the growing concern with environmental issues involving the emission of gases that enhance the greenhouse effect and other problems associated with fossil fuels, hydrogen arises as an alternative source of energy ...
Fermentação de açúcares liberados de biomassas lignocelulósicas pré-tratadas com líquidos iônicos para a produção de etanol
(2015-02-23)
Fossil fuels, such as gasoline, diesel and coal, are the main sources of energy nowadays. In addition to generate problems, from the emission of greenhouse gases to the increase in fuel prices, these energy sources are ...
Concreto permeável com agregados reciclados de resíduos de isoladores elétricos de porcelana
(2015-02-23)
The generation of waste, in general, can bring many environment issues due to their improper disposal, making necessary to search for alternative methods for handling, treatment and final disposal of them. The Brazilian ...
Avaliação das propriedades mecânicas e emissão de ruído de roldanas poliméricas de POM/TPU utilizadas na indústria moveleira
(2015-02-20)
Polyoxymethylene (POM), an engineering polymer with good mechanical properties, blended with thermoplastic polyurethane (TPU), a polymer composed by a flexible and a rigid phase, are an alternative of materials to be used ...
Influência da temperatura e da pressão sobre a permeação de gases (CO2/CH4) através de membranas poliméricas assimétricas de PVDF e PSF
(2015-02-23)
Currently, there is a need in the world to substitute fossil fuels for renewable sources in the energy production. Natural gas has significant advantages over other fossil fuels, in particular the reduction in atmospheric ...
A influência das variáveis de processamento e de diferentes tipos de nanocargas nas propriedades dos compósitos de polipropileno
(2015-08-12)
In this work an evaluation of the thermal and mechanical properties of PP/PP-g-MA composites with 5 and 10 wt% of MMT-Na+, MMT-15A, MMT-30B, CaCO3 and CaCO3-AE nanofillers was performed. Composites were prepared in a ...
Estudo e secagem de argila vermelha utilizando um sensor magnetoelástico
(2015-02-20)
An important application of magnetoelastic sensors is in antitheft systems. Because of their excellent performance and their passive wireless nature, they have also been extensively used in environmental sensing of changes ...
Desenvolvimento de tintas em pó ignífugas à base de resina acrílica com adição das argilas montmorilonita e mica moscovita
(2015-12-08)
The powder coatings are gaining market share because they are environmentally friendly, solvent-free and solid components. Protection is one of its main features to avoid direct action of aggressive agents. Because they ...
Avaliação comparativa de revestimento de conversão à base de cério para embalagens de folhas flandres empregadas na indústria de alimentos
(2015-02-23)
The metal food packages provide a barrier to the action of the environment and the preservation of nutrients and organoleptic quality of the packaged product. Several studies are being conducted aiming for environmentally ...
Pirólise de madeira tratada com CCA em reator de leito fixo
(2015-12-04)
Wooden poles of the electricity distribution network are treated with preservatives to increase their shelf life. Among the various types of wood preservatives available on the market, the most used is the chromated copper ...