Diagnóstico molecular de Pantoea ananatis em milho, sorgo e Digitaria sp.

A doença conhecida como mancha-branca-do-milho (MWS), inicialmente descrita como mancha-de-phaeosphaeria (PLS), é uma das principais doenças do milho no Brasil e vem crescendo em importância para os produtos em diferentes países. A identificação correta do agente etiológico é uma etapa importante para predição e manejo adequado da doença. O fungo Phaeosphaeria maydis foi inicialmente descrito como o agente etiológico dessa doença (Rane et al., 1966). Contudo, o insucesso na reprodução de sintomas, a ocorrência do fungo restrita a algumas áreas de cultivo do milho e sua ausência em áreas de elevada incidência da doença geraram sérias dúvidas sobre a etiologia da mesma. Assim, a realização de estudos científicos detalhados possibilitaram a identificação correta do agente causal da doença como sendo a bactéria Pantoea ananatis (Paccola-Meirelles et al., 2001). A partir dessa data, a doença passou a ser denominada mancha-branca-do-milho. O desenvolvimento de métodos diagnósticos simples, precisos e rápidos podem acelerar a tomada de decisões para controle da doença. Nesse documento é apresentado um método de diagnóstico que apresenta as características descritas anteriormente e que consiste no uso de apenas um par de iniciadores (primers) para amplificar uma região do cromossomo bacteriano que constitui uma assinatura genômica da espécie P. ananatis.bitstream/item/70056/1/doc-142-1.pd

Efeito in vitro de glyphosate sobre rizobactérias do gênero Bacillus spp.

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Augmented reality and holograms for the visualization of mechanical engineering parts

There is an increasing number of students using tablets in schools. Mobile devices gained popularity as an educational tool and there are many schools that use them frequently in educational activities to improve learning. We found that first year students of mechanical engineering in general have difficulties in understanding 3D shapes from 2D views. There are many Augmented Reality (AR) applications available that can be used to create educational contents for these mobile devices. On the other hand, there is an increasing interest in making holograms. In this paper we studied the most popular AR systems and show examples of using an AR system for the visualization of 3D models. We also present the creation of a low cost prototype, the EducHolo, that enables the visualization of holograms supported by tablets. With this prototype students can visualize the hologram of mechanical parts, providing a better perception of the model 3D shape and improving the ability of making the 2D orthographic views and perspectives that they study in the first year of mechanical engineer

Predição de estruturas e modelagem molecular de BIP (Binding Protein da soja (Glycine max L. (Merrill) usando biologia computacional.

xSuplemento. Edição dos resumos do 43º Congresso Nacional de Genética

Transformations of Heun's equation and its integral relations

We find transformations of variables which preserve the form of the equation for the kernels of integral relations among solutions of the Heun equation. These transformations lead to new kernels for the Heun equation, given by single hypergeometric functions (Lambe-Ward-type kernels) and by products of two hypergeometric functions (Erd\'elyi-type). Such kernels, by a limiting process, also afford new kernels for the confluent Heun equation.Comment: This version was published in J. Phys. A: Math. Theor. 44 (2011) 07520

Armazenamento de sementes de juta.

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Discrepancies in Determinations of the Ginzburg-Landau Parameter

Long-standing discrepancies within determinations of the Ginzburg-Landau parameter $\kappa$ from supercritical field measurements on superconducting microspheres are reexamined. The discrepancy in tin is shown to result from differing methods of analyses, whereas the discrepancy in indium is a consequence of significantly differing experimental results. The reanalyses however confirms the lower $\kappa$ determinations to within experimental uncertainties.Comment: submitted to Phys. Rev.

Aplicação sistemática de defensivos na produção de sementes de caupi.

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Copper and lead removal by peanut hulls: equilibrium and kinetic studies

This research work aims to study the use of peanut hulls, an agricultural and food industry waste, for copper and lead removal through equilibrium and kinetic parameters evaluation. Equilibrium batch studies were performed in a batch adsorber. The influence of initial pH was evaluated (3–5) and it was selected between 4.0 and 4.5. The maximum sorption capacities obtained for the Langmuir model were 0.21 ± 0.03 and 0.18 ± 0.02 mmol/g, respectively for copper and lead. In bi-component systems, competitive sorption of copper and lead was verified, the total amount adsorbed being around 0.21 mmol of metal per gram of material in both mono and bi-component systems. In the kinetic studies equilibrium was reached after 200 min contact time using a 400 rpm stirring rate, achieving 78% and 58% removal, in mono-component system, for copper and lead respectively. Their removal follows a pseudo-second-order kinetics. These studies show that most of the metals removal occurred in the first 20 min of contact, which shows a good uptake rate in all systems