A cultura da goiaba.

bitstream/item/128279/1/PLANTAR-Goiaba-ed02-2010.pdf2. ed. rev. e ampl.Autores: Adriane Luciana da Silva, Alessandra Monteiro S. Mendes, Anderson Ramos de Oliveira, Beatriz Aguiar Jordão Paranhos, Carlos Antonio Fernades Santos, Davi José Silva, Débora Costa Bastos, Diógenes da Cruz Batista, Flávia Rabelo Barbosa, José Eudes de Morais Oliveira, José Lincoln Pinheiro de Araújo, José Maria Pinto, José Mauro da Cunha e Castro, José Monteiro Soares, Luís Henrique Bassoi, Luiz Gonzaga Neto, Magna Soelma Bezerra de Moura, Marcelo Calgaro, Maria Auxiliadora Coêlho de Lima, Mirtes Freitas Lima, Rebert Coelho Correia, Vanderlise Giongo Petrere. Projeto Minibibliotecas

Programa de melhoramento de Capsicum da Embrapa: avaliação de híbridos e linhagens avançadas de pimenta malagueta a viroses em campo.

As viroses constituem um dos principais problemas das pimentas malaguetas (Capsum frtescens L.) causando perdas na produção e reduzindo a qualidade dos frutos. Com o objetivo de dar suporte ao Programa de Melhoramento de Capsicum da Embrapa Hortaliças, avaliou-se em campo 37 híbridos e 14 linhagens avançads de pimenta Malagueta à infecção natural com tospovírus, potyvirus, tobamovírus e cucumovírus.Resumo 1713

Persistence in the zero-temperature dynamics of the QQ-states Potts model on undirected-directed Barab\'asi-Albert networks and Erd\"os-R\'enyi random graphs

The zero-temperature Glauber dynamics is used to investigate the persistence probability $P(t)$ in the Potts model with $Q=3,4,5,7,9,12,24,64, 128$, $256, 512, 1024,4096,16384$,..., $2^{30}$ states on {\it directed} and {\it undirected} Barab\'asi-Albert networks and Erd\"os-R\'enyi random graphs. In this model it is found that $P(t)$ decays exponentially to zero in short times for {\it directed} and {\it undirected} Erd\"os-R\'enyi random graphs. For {\it directed} and {\it undirected} Barab\'asi-Albert networks, in contrast it decays exponentially to a constant value for long times, i.e, $P(\infty)$ is different from zero for all $Q$ values (here studied) from $Q=3,4,5,..., 2^{30}$; this shows "blocking" for all these $Q$ values. Except that for $Q=2^{30}$ in the {\it undirected} case $P(t)$ tends exponentially to zero; this could be just a finite-size effect since in the other "blocking" cases you may have only a few unchanged spins.Comment: 14 pages, 8 figures for IJM

Critical wave-packet dynamics in the power-law bond disordered Anderson Model

We investigate the wave-packet dynamics of the power-law bond disordered one-dimensional Anderson model with hopping amplitudes decreasing as $H_{nm}\propto |n-m|^{-\alpha}$. We consider the critical case ($\alpha=1$). Using an exact diagonalization scheme on finite chains, we compute the participation moments of all stationary energy eigenstates as well as the spreading of an initially localized wave-packet. The eigenstates multifractality is characterized by the set of fractal dimensions of the participation moments. The wave-packet shows a diffusive-like spread developing a power-law tail and achieves a stationary non-uniform profile after reflecting at the chain boundaries. As a consequence, the time-dependent participation moments exhibit two distinct scaling regimes. We formulate a finite-size scaling hypothesis for the participation moments relating their scaling exponents to the ones governing the return probability and wave-function power-law decays

Short Communication: Frankliniella tenuicornis (Thysanoptera: Thripidae), a novel harmful insect to banana (Musa sp.) crops

Aim of study: This study aimed to record a previously unknown harmful insect to banana (Musa sp.) crops, Frankliniella tenuicornis (Uzel).Area of study: Thrips individuals were collected from banana fields located in Paphos District, Cyprus.Material and methods: Specimens of thrips were mounted in permanent microscope and identified using specialized literature. Voucher specimens are deposited in Coleção de História Natural da UFPI, Brazil. Images for species and damage recognition were obtained.Main results: The thrips causes a red-brownish discoloration at the spots where banana fruits touch each other. This cosmetic damage reduces the marketability and/or price of banana fruits. In addition, F. tenuicornis is recorded for the first time in the island of Cyprus.Research highlights: This is the first record of F. tenuicornis damaging banana crops. It constitutes the basic step for future studies in order to produce possible suitable control methods against the new phytosanitary problem

Effect of particle polydispersity on the irreversible adsorption of fine particles on patterned substrates

We performed extensive Monte Carlo simulations of the irreversible adsorption of polydispersed disks inside the cells of a patterned substrate. The model captures relevant features of the irreversible adsorption of spherical colloidal particles on patterned substrates. The pattern consists of (equal) square cells, where adsorption can take place, centered at the vertices of a square lattice. Two independent, dimensionless parameters are required to control the geometry of the pattern, namely, the cell size and cell-cell distance, measured in terms of the average particle diameter. However, to describe the phase diagram, two additional dimensionless parameters, the minimum and maximum particle radii are also required. We find that the transition between any two adjacent regions of the phase diagram solely depends on the largest and smallest particle sizes, but not on the shape of the distribution function of the radii. We consider size dispersions up-to 20% of the average radius using a physically motivated truncated Gaussian-size distribution, and focus on the regime where adsorbing particles do not interact with those previously adsorbed on neighboring cells to characterize the jammed state structure. The study generalizes previous exact relations on monodisperse particles to account for size dispersion. Due to the presence of the pattern, the coverage shows a non-monotonic dependence on the cell size. The pattern also affects the radius of adsorbed particles, where one observes preferential adsorption of smaller radii particularly at high polydispersity.Comment: 9 pages, 5 figure