First record of Caliothrips phaseoli (Hood, 1912) (Thysanoptera: Thripidae) on Arachis spp. (Fabaceae) in Brazil.

The objective of this work was to establish the first record of Caliothrips phaseoli (Hood, 1912) (Thysanoptera: Thripidae); in forage peanut accessions in the state of Acre, Brazil. The specimens were collected directly from the leaves of infested plants grown in pots and under greenhouse conditions, preserved in 70 % ethyl alcohol, and mounted on slides to later be observed under a microscope. Caliothrips phaseoli is a polyphagous species considered an important pest in bean and soybean crops in Brazil. The insect feeds on forage peanuts causes chlorosis on the leaves and delays the development of infested plants, although no mortality was verified

Distribuição do sistema radicular da Mangueira CV. Palmer sob secamento parcial.

Nesse contexto o presente trabalho teve como objetivo avaliar o efeito do secamento parcial do sistema radicular sobre a distribuição do sistema radicular da mangueira cultivar Palmer nas condições semiáridas do norte de Minas Gerais. Os tratamentos foram instalados com base na redução de 50% da lamina bruta calculada, isto é aplicação de água em apenas um lado da fileira de plantas no tempo equivalente a aplicação nos dois lados e com base na fase fonológica da cultura. Os tratamentos ficaram da seguinte forma: T1- LB total na fase 1, redução de 50% com alternâncias de 7 dias nas demais fases; T2-LB total na fase 1, redução de 50% com alternâncias de 21 dias nas demais fases; e T3-redução de 50% da LB sem alternância, ou seja, com irrigação fixa em um só lado da fileira de plantas e T4-LB total em todas as fases (controle). Para as profundidades dos diferentes tratamentos não ocorreu diferença para o T1 (alternância de 7 dias) e o T4 (Controle). Já para as distâncias do caule houve diferença para todos os tratamentos

On Useful Conformal Tranformations In General Relativity

Local conformal transformations are known as a useful tool in various applications of the gravitational theory, especially in cosmology. We describe some new aspects of these transformations, in particular using them for derivation of Einstein equations for the cosmological and Schwarzschild metrics. Furthermore, the conformal transformation is applied for the dimensional reduction of the Gauss-Bonnet topological invariant in $d=4$ to the spaces of lower dimensions.Comment: 17 pages, LaTeX. The paper is intended mainly for pedagogical purposes and represents a collection of exercises concerning local conformal transformations and dimensional reduction. To be published in "Gravitation and Cosmology

On Matrix Superpotential and Three-Component Normal Modes

We consider the supersymmetric quantum mechanics (SUSY QM) with three- component normal modes for the Bogomol'nyi-Prasad-Sommerfield (BPS) states. An explicit form of the SUSY QM matrix superpotential is presented and the corresponding three-component bosonic zero-mode eigenfunction is investigated.Comment: 17 pages, no figure. Paper accepted for publication in Journal of Physics A: Mathematical and Theoretica

Primeiro registro de tripes (Thysanoptera: Thripidae) em hortelã (Mentha sp.) no Acre.

O objetivo deste trabalho foi relatar o primeiro registro de duas espécies de tripes, causando danos em plantas de hortelã, em Rio Branco, AC.Publicado no formato de pôster dinâmico

Analysing and controlling the tax evasion dynamics via majority-vote model

Within the context of agent-based Monte-Carlo simulations, we study the well-known majority-vote model (MVM) with noise applied to tax evasion on simple square lattices, Voronoi-Delaunay random lattices, Barabasi-Albert networks, and Erd\"os-R\'enyi random graphs. In the order to analyse and to control the fluctuations for tax evasion in the economics model proposed by Zaklan, MVM is applied in the neighborhod of the noise critical $q_{c}$. The Zaklan model had been studied recently using the equilibrium Ising model. Here we show that the Zaklan model is robust and can be reproduced also through the nonequilibrium MVM on various topologies.Comment: 18 pages, 7 figures, LAWNP'09, 200