Fungal contamination: comparation between Portuguese poultries and swines

Animal confinement tends to increase the overall microbial load in the production environment caused by high amounts of feed and organic residuals (manure and wastewater) present in those environments. The number of animais and the handling and management required to work in these settings also contribute to enhance that microbial ioad. Animal housing typically exposes workers to substantial concentrations of bioaerosols, such as fungi and their metabolites. Therefore, agricultural workers, and especially pig and poultry farmers, are at increased risk of occupational respiratory diseases. Exposure to bioaerosols in poultries and swines may vary depending upon the stage of the animals' growth, density, manure management procedures, litter type and used floor coverage, among others. Gathering temporal information about the quantity and the composition of fungal load is necessary to better understand the relationship between these factors and adverse health symptoms of workers. This study aimed to characterize and compare fungal contamination between these two different settings.

A Spatial Econometrics Analysis for Road Accidents in Lisbon

This paper presents a spatial econometrics analysis for the number of road accidents with victims in the smallest administrative divisions of Lisbon, considering as a baseline a log-Poisson model for environmental factors. Spatial correlation on data is investigated for data alone and for the residuals of the baseline model without and with spatial-autocorrelated and spatial-lagged terms. In all the cases no spatial autocorrelation was detected.

Mantle beneath the Gibraltar Arc from receiver functions

P and S receiver functions (PRF and SRF) from 19 seismograph stations in the Gibraltar Arc and the Iberian Massif reveal new details of the regional deep structure. Within the high-velocity mantle body below southern Spain the 660-km discontinuity is depressed by at least 20 km. The Ps phase from the 410-km discontinuity is missing at most stations in the Gibraltar Arc. A thin (similar to 50 km) low-S-velocity layer atop the 410-km discontinuity is found under the Atlantic margin. At most stations the S410p phase in the SRFs arrives 1.0-2.5 s earlier than predicted by IASP91 model, but, for the propagation paths through the upper mantle below southern Spain, the arrivals of S410p are delayed by up to +1.5 s. The early arrivals can be explained by elevated Vp/Vs ratio in the upper mantle or by a depressed 410-km discontinuity. The positive residuals are indicative of a low (similar to 1.7 versus similar to 1.8 in IASP91) Vp/Vs ratio. Previously, the low ratio was found in depleted lithosphere of Precambrian cratons. From simultaneous inversion of the PRFs and SRFs we recognize two types of the mantle: 'continental' and 'oceanic'. In the 'continental' upper mantle the S-wave velocity in the high-velocity lid is 4.4-4.5 km s(-1), the S-velocity contrast between the lid and the underlying mantle is often near the limit of resolution (0.1 km s(-1)), and the bottom of the lid is at a depth reaching 90 100 km. In the 'oceanic' domain, the S-wave velocities in the lid and the underlying mantle are typically 4.2-4.3 and similar to 4.0 km s(-1), respectively. The bottom of the lid is at a shallow depth (around 50 km), and at some locations the lid is replaced by a low S-wave velocity layer. The narrow S-N-oriented band of earthquakes at depths from 70 to 120 km in the Alboran Sea is in the 'continental' domain, near the boundary between the 'continental' and 'oceanic' domains, and the intermediate seismicity may be an effect of ongoing destruction of the continental lithosphere.

Incorporação de resíduos cerâmicos vidrados em argamassas bastardas: estudo de propriedades físicas e mecânicas

Dissertação de Natureza Científica para obtenção do grau de Mestre em Engenharia Civil Perfil de Edificações

Ampliação e remodelação das redes de abastecimento de águas e rede de drenagem de águas residuais domésticas e pluviais do Hotel Terra Nostra nas Furnas - Ponta Delgada

O presente trabalho de fim de mestrado caracteriza-se pela ampliação e remodelação das redes de abastecimento de águas e drenagem de águas residuais domésticas e pluviais do Hotel Terra Nostra nas Furnas em Ponta Delgada em fase de licenciamento. Este empreendimento é constituído por 2 alas (Ala Deco e Ala Jardim) constituídas por 3 pisos na Ala Deco e 4 pisos na Ala Jardim. A remodelação da rede será efectuada somente onde a rede existente já está bastante degradada ou com um abastecimento deficiente. A sua ampliação vem fazer face ao aumento do número de instalações sanitárias do empreendimento e da cozinha da Ala Deco. O objectivo desta intervenção vem no sentido de melhorar o funcionamento da rede, resolver os problemas existentes com o desgaste da mesma e proporcionar melhores níveis de conforto no seu desempenho. Neste sentido foi realizado um estudo sobre todo o sistema hidráulico do hote, tanto de abastecimento como de drenagem de águas residuais domésticas e pluviais, tendo como apoio para a realização do mesmo a legislação em vigor bem como alguns manuais de hidráulica. Desta forma o referente trabalho vem mostrar toda a solução adoptada para fazer face às deficiências encontradas no sistema bem como a respectiva ampliação das instalações do mesmo.