Encontrados 11 documentos, a visualizar página 1 de 2

Estudo de material fresado para incorporação em misturas betuminosas a quente c...

A problemática da reciclagem tem-se tornado cada vez mais importante no desenvolvimento dos países, pois a necessidade de tratar os resíduos gerados é essencial para a sobrevivência da Sociedade. Este trabalho visa estudar a forma como o tratamento dado ao material fresado pode condicionar as suas propriedades (granulometria e características do betume) e as condições de produção das misturas. Assim, tendo por ...

Multiresponse modelling of the caramelisation reaction

Multiresponse modelling is a powerful tool for studying complex kinetics of reactions occurring in food products. This modelling technique uses information of reactants and products involved, allowing insightful kinetic parameters estimation and helping in clarifying reaction mechanisms. One example of a complex reaction that occurs in food processing is the caramelisation reaction. Caramelisation is the common...

Antioxidant activity of sugar molasses, including protective effect against DNA...

Extracts were obtained from molasses, a byproduct of the sugar industry, via a number of chromatographic steps. Their antioxidant capacity was studied, including the inhibitory effect upon DNA oxidative damage;the phenolic compound profile there of was ascertained as well. Two extracts exhibited significant antioxidant features, expressed by their capacity to decolorize ABTS radical cation and to scavenge hydro...

Continuous decolourization of a sugar refinery wastewater in a modified rotatin...

Phanerochaete chrysosporium immobilized on different support materials, such as polyurethane foam (PUF) and scouring web (SW), in shake cultures, was able to decolourize efficiently the sugar refinery effluent in a long-term repeated-batch operation. The decolourization medium composition was optimized using PUF-immobilized fungus. Addition of glucose was obligatory and the minimum glucose concentration was fou...

Multiresponse modelling of the caramelisation reaction

Os transportadores ABC peroxissomais : estrutura e função da ALDP

Uma aplicação da análise biomecânica do processo de montagem de produtos indust...

Este trabalho apresenta um método informatizado de avaliação biomecânica e sua aplicação na avaliação do trabalho de montagem de componentes numa indústria do setor biomédico. O método envolve a utilização da técnica da videocinematografia para aquisição de imagens, sua digitalização e seu posterior tratamento através do programa BIOMEC. O programa BIOMEC dispõe de uma base de dados em biomecânica e antropometr...

The importance of the morphology and hydrophobicity of different carriers on th...

There was no direct correlation between the surface hydrophobicity or hydrophilicity of four solid carriers and the amount of immobilized Phanerochaete chrysosporium. The immobilized biomass was 1.5–1.8 times higher and the fungal degradation activity was 5–8 and 3 times greater in terms of decolorization and phenolics reduction, respectively, with porous carriers than with non-porous carriers.. Morphology of t...

Biodegradation of colorants in refinery effluents : potential use of the fungu...

The degradative ability of Phanerochaete chrysosporium towards each of the four;main types of colorants present in regeneration effluents from ion exchange resins was investigated. The fungus was able to decolorise melanoidin, caramel and HADP (hexose alkaline degradation product) solutions by 74%, 87% and 80%,. respectively, and to reduce levels of phenolic compounds by 72%. Gel permeation chromatography studi...

Role of manganese peroxidases and lignin peroxidases of Phanerochaete chrysospo...