The role of Dark Matter interaction in galaxy clusters

We consider a toy model to analyze the consequences of dark matter interaction with a dark energy background on the overall rotation of galaxy clusters and the misalignment between their dark matter and baryon distributions when compared to {\Lambda}CDM predictions. The interaction parameters are found via a genetic algorithm search. The results obtained suggest that interaction is a basic phenomenon whose effects are detectable even in simple models of galactic dynamics.Comment: RevTeX 4.1, 5 pages, 3 figure

On the nature of some SGRs and AXPs as rotation-powered neutron stars

We investigate the possibility that some SGRs/AXPs could be canonical rotation-powered pulsars using realistic NS structure parameters instead of fiducial values. We show that realistic NS parameters lowers the estimated value of the magnetic field and radiation efficiency, $L_X/\dot{E}_{\rm rot}$, with respect to estimates based on fiducial NS parameters. We show that nine SGRs/AXPs can be described as canonical pulsars driven by the NS rotational energy, for $L_X$ computed in the soft (2--10~keV) X-ray band. We compute the range of NS masses for which $L_X/\dot{E}_{\rm rot}<1$. We discuss the observed hard X-ray emission in three sources of the group of nine potentially rotation-powered NSs. This additional hard X-ray component dominates over the soft one leading to $L_X/\dot{E}_{\rm rot}>1$ in two of them. We show that 9 SGRs/AXPs can be rotation-powered NSs if we analyze their X-ray luminosity in the soft 2--10~keV band. Interestingly, four of them show radio emission and six have been associated with supernova remnants (including Swift J1834.9-0846 the first SGR observed with a surrounding wind nebula). These observations give additional support to our results of a natural explanation of these sources in terms of ordinary pulsars. Including the hard X-ray emission observed in three sources of the group of potential rotation-powered NSs, this number of sources with $L_X/\dot{E}_{\rm rot}<1$ becomes seven. It remains open to verification 1) the accuracy of the estimated distances and 2) the possible contribution of the associated supernova remnants to the hard X-ray emission.Comment: 11 pages, 14 figures, to appear in A&

Metabolic engineering of fatty acids from soybean seeds.

Edição do Congress of the Brazilian Biotechnology Society, Florianópolis, 2013

Diagnóstico socioeconômico da cultura do feijão no Brasil.

Este documento visa oferecer, de forma sucinta e objetiva, uma contribuição atualizada aos estudos socioeconômicos da cultura do feijão no Brasil. Trata-se de uma cultura de extrema importância, explorada tanto no nível da propriedade de cunho familiar quanto por empresários rurais e que, além disso, diariamente compõe a dieta nutricional dos brasileiros. Assim, o conhecimento do contexto socioeconômico por meio de avaliações analíticas pode contribuir para a tomada de decisões pelos formuladores de políticas para o setor.bitstream/item/85928/1/DC-94.pd

Transformação e avaliação de plantas a resistência ao mofo branco do feijoeiro causado pelo fungo Sclerotinia sclerotiorum (Lib.) de Bary.

Como não existe alta resistência genética a doença do mofo branco causado pelo patógeno habitante do solo Sclerotinia sclerotiorum, a proposta é a transformação do feijão com o gene da oxalato descarboxilase, a fim de interferir diretamente nos mecanismos de patogenicidade do fungo, tornando a planta resistente

Evaluation of mineral content in maize under flooding.

This study examined the effects of plant mineral content on different cycles of recurrent selection of the flood-tolerant, open-pollinated maize variety BRS 4154 - "Saracura", under soil flooding. Experiments with the main treatments flooded or unflooded were conducted in Sete Lagoas, MG - Brazil. Samples of the cycles 1, 5, 9 and 15 were sown in a randomized block design. The open-pollinated variety BR 107 and single-cross hybrid BRS 1010 were used as flood-susceptible controls. The stress caused by water excess in the soil reduced the nitrogen content in the cycles 5 and 9, and calcium in cycle 15; but increased potassium in cycle 1. However, it did not significantly influence the content of phosphorus, magnesium, sulfur, zinc, and copper. Additionally, recurrent selection under flooding diminished potassium and calcium content along the cycles

Cultivo do milho: nutrição e adubação.

bitstream/CNPMS/15600/1/Com_44.pd

Sistema integrado de apoio à decisão: uma implementação computacional de modelos de análise de envoltória de dados.

A Análise de Envoltória de Dados (DEA) baseia-se em problemas de programação linear (PPL) para determinar a eficiência de unidades produtivas (DMUs). Esse processo pode ser computacionalmente intenso, pois um PPL deve ser rodado para cada unidade. Além disso, os PPLs são altamente degenerados e, em alguns casos, apresentam múltiplas soluções eficientes. O trabalho desenvolvido pretende preencher uma lacuna existente no que se refere a softwares de DEA, qual seja, a inexistência de programas que contemplem resultados completos (índices de eficiência, benchmarks, pesos e alvos) dos modelos DEA clássicos, bem como a incorporação de modelos DEA mais avançados. A interface do software apresentado, assim como os modelos e os algoritmos de solução, foram implementados em Delphi. Nesse programa computacional, que recebeu o nome de SIAD ? Sistema Integrado de Apoio à Decisão, foram implementados os modelos básicos de DEA e também alguns modelos mais avançados

Genetic variability and morphological modifications in flooding tolerance in maize, variety BRS-4154.

Maize plants of the variety BRS 4154 - Saracura were evaluated in different cycles of recurrenl selection to determine genetic gains in flooding talerance, arranged in a random block design. The maize variety BRS 4154 in four selection cycles (1, 5. 9 and 15), together with the flooding-sensilive variety BR 107 and siingle cross BRS 1010 as control, were sown and evaluated. The stress caused by waterlogged soi! reduced the weight of 100 seeds and grain yield but did nol affect the number of kernel rows, ear length or prolificacy. Selection for yield resulted in higher yields