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BACKGROUND
This study is the first to investigate the Brazilian Amazonian Forest to identify new D-xylose-fermenting yeasts that might potentially be used in the production of ethanol from sugarcane bagasse hemicellulosic hydrolysates.
METHODOLOGY/PRINCIPAL FINDINGS
A total of 224 yeast strains were isolated from rotting wood samples collected in two… (More)

- R B Rodrigues, N F Svaiter, R D M De P Aola
- 2001

Using the heat kernel method and the analytic continuation of the zeta function, we calculate the canonical and improved vacuum stress tensors, T µν (x) and Θ µν (x), associated with a massless scalar field confined in the interior of an infinitely long rectangular waveguide. The local depence of the renormalized energy for two special configurations when… (More)

Sugarcane leaves straw (SLS) consists of 30.79% hemicelluloses, 40.84% cellulose and 25.80% lignin on dry solid basis and has the potential to serve as a lost cost feedstock for production of value-added products such as ethanol, xylitol, organic acids etc. by microbial fermentation based processes. This work evaluated the hydrolysis of SLS under different… (More)

- R B Rodrigues, N F Svaiter
- 2002

An analysis of one-loop vacuum fluctuations associated with a scalar field confined in the interior of a infinite waveguide of rectangular cross section is presented. We first consider the massless scalar field defined in a four-dimensional Euclidean space. To identify the infinities of the vacuum fluctuations we use a combination of dimensional and zeta… (More)

- R D M De P Aola, R B Rodrigues, N F Svaiter
- 1999

The zero-point energy of a massless fermion field in the interior of two parallel plates in a D-dimensional space-time at zero temperature is calculated. In order to regularize the model, a mix between dimensional and zeta-function regularization procedure is used and it is found that the regularized zero-point energy density is finite for any number of… (More)

The citrus fruit borer, Ecdytolopha aurantiana (Lima, 1927) (Lepidoptera: Tortricidae), is responsible for major losses to the citrus industry because it causes rot and drop of fruits. The current study aimed to select and characterize Bacillus thuringiensis (Berliner, 1911) strains toxic to E. aurantiana. For this purpose, 47 B. thuringiensis strains were… (More)

- R B Rodrigues, V M F Mendes, J P S Catalão
- 2009

This paper is concerned with lightning surge propagation on wind turbines. As wind power generation undergoes rapid growth, lightning incidents involving wind turbines have come to be regarded as a serious problem. Nevertheless, no known studies exist yet in Portugal regarding lightning protection of wind turbines. In this paper we present an overview of… (More)

- R B Rodrigues, N F Svaiter
- 2001

An analysis of the one-loop vacuum fluctuations associated with a massless scalar field, confined in the interior of a rectangular infinitely long waveguide is presented. To identify the infinities of the vacuum fluctuations we are using different analytic regularization procedures, instead of the usual point-splitting Green's function method. The… (More)

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