Inspecção e reabilitação do Seminário Conciliar de Braga

Apresenta-se o diagnóstico, análise e reforço de um edifício dos anos 30, realizado essencialmente em betão armado, mas com paredes de contorno em cantaria de granito. Devido a uma alteração de uso, de seminário para arquivo, realizaram-se diferentes análises estruturais (lineares e não-lineares) para definir as condições de segurança do edifício. Dada a necessidade de reforço, discutem-se diferentes alternativas e detalha-se o projecto de execução

Point-Coupling Models from Mesonic Hypermassive Limit and Mean-Field Approaches

In this work we show how nonlinear point-coupling models, described by a Lagrangian density that presents only terms up to fourth order in the fermion condensate $(\bar{\psi}\psi)$, are derived from a modified meson-exchange nonlinear Walecka model. The derivation can be done through two distinct methods, namely, the hypermassive meson limit within a functional integral approach, and the mean-field approximation in which equations of state at zero temperature of the nonlinear point-coupling models are directly obtained.Comment: 18 pages. Accepted for publication in Braz. J. Phy

Portuguese Society of Pastures and Forages

The Portuguese Society of Pastures and Forages (SPPF) was born from a course on pastures and forages held in the National Plant Breeding Station of Elvas (where the headquarters of SPPF are located) in 1979. It was organised by the head of the Pastures and Forages Department, David Gomes Crespo, who was the first and founder member. According to Abreu et al. (1999), the structure established was that of a Scientific Society and was considered by the Government as a Service of Public Interest. It gathered inspiration from the British Grassland Society, the Association Francaise pour la Production Fourragére, the Sociedad Española para el Estúdio de los Pastos and the European Grassland Federation. Presently it has 1450 members including research workers, technicians, farmers and students (number not included). The number of members was initially 100 and now there are 450 active members

Numerical modelling of masonry gravity dams considering the internal structure of the material

Frequently, numerical models of masonry dams disregard the discontinuous nature of the material. In some cases, those discontinuities control the structural and hydraulic behaviour of the masonry dam. The masonry proprieties are influenced by the quality of the material and the laying scheme of the stones on the external faces as well as in the inner material. The Discrete Element Method (DEM) has been used on analyses of gravity masonry dams. The capacity to model the discontinuities explicitly and the ability to perform coupled analyses are two significant benefits of the DEM. The DEM application used in this paper is presented, stressing the description of the calculation cycle. Seven examples of numerical analyses of gravity masonry dams are presented. Three of them consider the discontinuous nature of the dam body, in order to study the loss of cohesion scenario, the crack propagation scenario and the seismic performance of a masonry dam. The remainder four examples are aimed at stress analysis, global stability, hydromechanical analysis and the permanent sliding resulting from a seismic event

Aplicação do Radar de Penetração no Solo (GPR) na detecção de estruturas no âmbito nas Ciências Forenses

Na base do fulgurante desenvolvimento da ciência forense está a incorporação do conhecimento e técnicas de várias especialidades científicas, onde a física ocupa lugar de relevo. Um exemplo desta articulação é o GPR (Ground Penetrating Radar, Radar de Penetração no Solo), que assume hoje grande importância na detecção de objectos e cadáveres enterrados. Este trabalho descreve um estudo sobre os limites de aplicabilidade do GPR em investigação forense. Foram concebidos e desenvolvidos ensaios laboratoriais (para aferir parâmetros físicos e técnicas de tratamento de dados) e de campo (onde se estudaram as condições de detectabilidade de artefactos metálicos e cadáveres de porcos enterrados). Os resultados mostram o potencial de aplicação da técnica para este fim e a possibilidade de se estimar o estado de decomposição dos cadáveres

Aplicativo com suporte a dados geoespaciais para gerenciamento de processos de licenciamento ambiental.

Este trabalho tem como objetivo descrever a construção de uma nova versão para um aplicativo com suporte a dados geoespaciais, utilizado para cadastro e consulta de empreendimentos com atividades passíveis de licenciamento ambiental, considerando como estudo de caso o estado de Mato Grosso do Sul. Será demonstrada em detalhes a interface para cadastramento destes empreendimentos e atividades, que foi remodelada em relação à sua versão anterior. Também neste trabalho foi finalizada a consulta espacial aos empreendimentos cadastrados, possibilitando o acesso a dados reais e sua visualização em forma de mapas e gráficos. Estes módulos são partes integrantes do Sistema Interativo de Suporte ao Licenciamento Ambiental ? SISLA, e atualmente se encontram em fase de testes pelos técnicos do Instituto de Meio Ambiente do Mato Grosso do Sul (Imasul). Em trabalhos futuros, pretende-se que estes módulos sejam integrados ao Sistema Imasul de Registros e Informações Estratégicas do Meio Ambiente (Siriema).Geopantanal 2010

An experience in building a parallel and distributed problem-solving environment

We describe our experimentation with the design and implementation of specific environments, consisting of heterogeneous computational, visualization, and control components. We illustrate the approach with the design of a problem-solving environment supporting the execution of genetic algorithms. We describe a prototype steering parallel execution, visualization, and steering. A life cycle for the development of applications based an genetic algorithms is proposed.publishersversionpublishe

Relativistic Mean-Field Hadronic Models under Nuclear Matter Constraints

Relativistic mean-field (RMF) models have been widely used in the study of many hadronic frameworks because of several important aspects not always present in nonrelativistic models, such as intrinsic Lorentz covariance, automatic inclusion of spin, appropriate saturation mechanism for nuclear matter, causality and, therefore, no problems related to superluminal speed of sound. With the aim of identifying the models which best satisfy well known properties of nuclear matter, we have analyzed $263$ parameterizations of seven different types of RMF models under three different sets of constraints related to symmetric nuclear matter, pure neutron matter, symmetry energy, and its derivatives. One of these (SET1) is formed of the same constraints used in a recent work [M. Dutra et al., Phys. Rev. C 85, 035201 (2012)] in which we analyzed $240$ Skyrme parameterizations. The results pointed to $2$ models consistent with all constraints. By using another set of constraints, namely, SET2a, formed by the updated versions of the previous one, we found $4$ models approved simultaneously. Finally, in the third set, named SET2b, in which the values of the constraints are more restrictive, we found $3$ consistent models. Another interesting feature of our analysis is that the results change dramatically if we do not consider the constraint regarding the volume part of the isospin incompressibility ($K_{\tau,\rm v}$). In this case, we have $35$ approved models in SET2a and $30$ in SET2b.Comment: 63 pages, 3 figures and 9 tables. Version accepted for publication in PR