Artigos de Revista

The manufacture of majolica azulejos in Portugal started, as far as we know presently, during the 1550s by the workshop of Hans Goos, a Flemish potter established in Lisbon as João de Góis. The productions of what we may call the “circle of João de Góis” (maybe only a single workshop, or maybe several sharing the same technology) encompasses a period starting with his own productions before 1560 and lasting at least until the 1580s, possibly beyond. To address the characteristics of those productions and what makes them distinguishable, we have to compare them with those that chronologically preceded or followed it. This article attempts such a study, noting however that the notions of “antecedent” and “subsequent” do not imply a technological connection in the form that the latter is rooted in the former.

This paper presents the development and application of a comprehensive methodology for the systematic water balance calculation in collective irrigation systems (CIS), applicable to pressurized pipelines or open canals. Existing approaches focus solely on the assessment the water resources use efficiency of CIS single components (e.g., leakage in some canal reaches), without a system-wide approach. A water balance approach allows accounting for the different system volume inputs (i.e., water abstraction, imported water, water volume due to precipitation or surface runoff), authorized and non-authorized consumptions and water losses either in canal, mixed or pressurized CIS, which has never been presented in literature. The proposed methodology allows the assessment of different water loss components (i.e., evaporation losses, unauthorized uses, metering errors, leakage and discharges) and the calculation of water loss performance indicators that allow the identification of the main problems in terms of water losses and provides guidance about measures to control water losses. Although based on the existing and consolidated water balance schemes specifically developed for urban water supply systems, the proposed methodology includes novel components in terms of system input volume, authorized consumption and water loss that are specific of CIS. The methodology is tested and applied to a mixed collective irrigation system. Results show that the water losses due to discharges in canal systems can be one of the most relevant component of the non-revenue water, representing approximately half of its total volume, followed by leakage in canals and metering errors. These results highlight the importance of improving daily operation of these systems and also rehabilitating ageing infrastructures.

Masonry arch bridges form a significant portion of the European transport infrastructure network. Manyof these bridges are relatively old but still in service. Increasing vehicle loads and speeds have highlightedthe need for reliable estimates of their service condition. Past research demonstrated that load-carryingcapacity of a masonry arch bridge is a function of the soil response. However, today, the approaches usedfor the simulation of soil in masonry arch bridges are over-simplistic and most of them do not take intoaccount the soil-structure interaction phenomena. This paper presents a novel modelling approach, basedon the discrete element method, for the simulation of backfill material in masonry arch bridges.According to the method, bricks in the barrel vault are simulated as an assembly of distinct blocks separatedby zero thickness interfaces at each mortar joint. Backfill is represented as an assemblage of denselypacked discrete irregular deformable particles, here called

Análise da flexibilização conferida pela Portaria n.º 304/2019, de 12 de setembro, às exigências definidas no Regulamento Geral das Edificações Urbanas para as habitações e a edificação em conjunto.

No que à segurança contra incêndio diz respeito, as intervenções de reabilitação no edificado existente são presentemente reguladas pela legislação que se aplica ao edificado novo, nomeadamente pelo Regime Jurídico de Segurança Contra Incêndio em Edifícios (RJSCIE), (posteriormente alterado pelo Decreto-Lei n.º 224/2015, de 9 de outubro), pelo Regulamento Técnico de Segurança Contra Incêndio em Edifícios (RTSCIE) e, ainda, pelos Critérios Técnicos para Determinação da Densidade de Carga de Incêndio Modificada.Na regulamentação em questão, a intervenção sobre edifícios existentes é enquadrada pelo Artigo 14.º-A

Mechanical constraints have a non-negligible influence in the motion of oscillating wave surge converter (OWSC) devices. The key novelty of this paper is a numerical simulation tool for OWSCs that does not neglect or significantly compromise mechanical constraints such as hydraulic power take-off (PTO) system, revolute joints and frictional contacts among components. The paper is aimed at presenting the key components of the numerical simulation tool and at validating it with laboratory data featuring an OWSC with mechanical constraints under regular and irregular waves. It is based on the implementation of the multibody solver of Project Chrono under the Smoothed Particle Hydrodynamics (SPH) model of DualSPHysics, where the SPH solver resolves the interaction between wave and flap and the multibody solver resolves the interaction between flap and mechanical constraints. Comparison between numerical results and experimental data show that the numerical simulation tool properly predicts the dynamics of the OWSC. Furthermore, in what concerns hydrodynamics of the near-flap flow, the computed and measured free-surface elevations and phase-averaged flow field show reasonable agreement. Once properly validated, the numerical simulation tool is then applied to study the influence of several mechanical constraints, PTO damping characteristics and flap inertia on the hydrodynamic of the OWSC. The viability of OWSC design solutions based on the developed numerical simulation tool is emphasised, in view of its performance in the test cases to which it was subjected.

The azulejos in the Capela de São Roque (Saint Roch Chapel) in the church of the same saint, in Lisbon, are justly considered one of the major majolica works made anywhere during the last quarter of the 16th century. The earliest known surviving ensemble of Portuguese manufacture signed and dated, (“Francisco de Matos / 1584”) has long puzzled art historians mostly because their magnificence seems to have sprouted literally by spontaneous generation with no predecessors and few immediate successors. This communication reviews José Queirós’ references to the panels made over a century ago, when a hitherto unknown part of the lining was uncovered, and his information is compared with the objective proofs gained from instrumental results. The results also point to a definite technological ancestry that goes counter the notion that the work does not have antecedents.

In this article, an assessment method toestimate the residual strength of pine structural ele-ments degraded by anobiids is presented. This novelmethod was developed in the laboratory to be usedin situ and is based on the strength required to withdrawa screw on the surface of degraded timber. Samples ofdegraded maritime pine (Pinus pinaster Ait.) weresubmitted to micro-computed tomography (l-XCT) toquantify density loss. This parameter is highly corre-lated with mechanical properties thus central for theassessment of timber structural capacity. Density lossvalues have been correlated with both screw withdrawalforce and shear parallel to the grain strength showingsignificant relationships between these parameters.Using these correlations, the density loss of a degradedelement and its shear strength parallel to the grain viathe screw withdrawal force can be estimated enabling avalid quantitative assessment of the timber elementsresidual strength and, therefore, contributing to reduceunnecessary replacement, to boost eco-efficient inter-ventions and to provide foundations required to performexperimental modelling tests.

This study of the early production of faience azulejos in Lisbon relies on three panels or groups of panels of known Portuguese origin: the incomplete and dispersed panels at Igreja da Graça signed by João de Góis and presumably datable to the 1560s; the panel of the demolished Capela de Nossa Senhora da Vida bearing a text that we believe identifies João de Góis as the workshop master and datable to ca. 1580, and the panels that line Capela de São Roque in Lisbon, dated “1584” and signed “Francisco de Matos”. In this article the information obtained from the microscopic observations and instrumental analyses of samples collected from tiles of the several panels is compared aiming to determine their common characteristics and most relevant differences.