Cosmological scenarios from multiquintessence

In this work we derive and analyse cosmological scenarios coming from multi-component scalar field models. We consider a direct sum of a sine-Gordon with a Z2 model, and also a combination of those with a BNRT model. Moreover, we work with a modified version of the BNRT model, which breaks the Z2 x Z2 symmetry of the original BNRT potential, coupled with the sine-Gordon and with the standard Z2 models. We show that our approach can be straightforwardly elevated to $N$ fields. All the computations are made analytically and some parameters restriction is put forward in order to get in touch with complete and realistic cosmological scenarios

Nutrição e exigências nutricionais.

Comparação do comportamento ingestivo de caprinos e ovinos. Exigências nutricionais de ovinos e caprinos no Semiárido brasileiro. Consumo de matéria seca. Energia e proteína. Minerais e vitaminas

Efeito da altitude sobre o crescimento e desenvolvimento de quatro genótipos de mamona.

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Semiclassical back reaction around a cosmic dislocation

The energy-momentum vacuum average of a conformally coupled massless scalar field vibrating around a cosmic dislocation (a cosmic string with a dislocation along its axis) is taken as source of the linearized semiclassical Einstein equations. The solution up to first order in the Planck constant is derived. Motion of a test particle is then discussed, showing that under certain circumstances a helical-like dragging effect, with no classical analogue around the cosmic dislocation, is induced by back reaction.Comment: Published version, 4 pages, no figures, REVTeX4 fil

Formação de base de dados para identificação do potencial de fixação biológica de nitrogênio em leguminosas nativas da Mata atlântica no Estado do Rio de Janeiro.

Publicado também no VII Congresso brasileiro de Sistemas Agroflorestais, 201

ICLF in cooperative systems: a strategy to achieve net positive environmental and socioeconomic budgets.

ICLF systems are suitable for cooperative designs that gather small and large farmers. We use an agricultural cooperative in Mato Grosso do Sul state as an example of ICLF INCLUDING SWINE to produce a model of nutrients recycling, stormwater recovery and renewable energy production (eletric power). Based on pilot farms studies, in this presentation we show that the upscaling of these technologies to the entire cooperative level can improve environmental and socioeconomic indicators

Comportamento de sementes de pau-pretinho (Cenostigma tocantinum Ducke) quanto a tolerância à dessecação.

o presente trabalho teve por objetivo avaliar o comportamento das sementes de C. tocantinum, quanto a tolerância à dessecação

Crescimento e produtividade da parte aérea da mandioca, maniçoba e pornunça.

Este trabalho foi conduzido com o objetivo de avaliar o crescimento e a produtividade da mandioca (Manihot esculenta Crantz.), maniçoba (Manihot glaziowii Mull.) e do híbrido natural pornunça

Morfogênese de Trachypogon plumosus Submetido à Calagem e Adubação Fosfatada.

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