Groundwater contamination potential - vulnerability assessment

Águeda watershed is a sub-catchement of the Douro river (northern Portugal) and it is distributed on both Spanish and Portuguese territories. The main core of this work is the achievement of a methodological tool able to be used for vulnerability assessment in ttransboudary watersheds. Groundwaters’ vulnerability mapping was carried out by two different methodological approches: DRASTIC and DRASTIC Pesticide [1]. DRASTIC is a numerical index derived from ratings and weights assigned to seven parameters – Deep to water, net Recharge, Aquifer media, Soil media, Topography, Impact of the vadose zone and hidraulic Conductivity. The obtained values raises between 23 (not vulnerable) to 230 (highly vulnerable). Drastic Pesticide uses the same parameters with the reassignment of attributes’ weights to stress the importance of agricultural activities. DRASTIC’s map for Águeda watershed shows three spatially distributed vulnerability classes: low (102 - 119), moderate (120 - 139) and moderate to high (140 - 154). The low vulnerable zones occupy almost 78% of the all area while the moderate vulnerable zones correspond to 21% of the remaining area. The moderate to high vulnerable zones represents less than 1% of the total area and it is localized in the central part of the Águeda watershed overlapping the tertiary sedimentary aquifer and the mostly populated area. DRASTIC Pesticide map shows four spatially distributed vulnerability classes: low (120 - 139), low to moderate (140 - 159), moderate to high (160 - 179) and high (180 - 195). The high proportion increases considerably in the central zone of the Águeda watershed representing more than 20% of the land parceling. Although similar hydrogeological intrinsic characteristics are observed in the central watershed’s area obvious differences can be stressed when anthropogenic activities are taken into consideration. Feasibility studies and the development of specific monitoring activities must be addressed in future work.Projeto POCTEP Águeda: http://comunidad.uemc.es/investigacion/gema/multileng/es

Surface water’s quality – a risk decision-making approach

Comunicação oral da qual só está disponível o resumo.Surface water’s quality – a risk decision-making approach

Enviromental risks analysis in transboundary watershed : a pilot project in Agueda river

Análise de riscos ambientais em bacias transfronteiriças : projecto-piloto no rio Águeda

Construção de modelos de vulnerabilidade em ambiente SIG : bacia transfronteiriça do rio Águeda

Comunicação oral da qual só está disponível o resumo.Construção de modelos de vulnerabilidade em ambiente SIG: Bacia transfronteiriça do rio Águeda

Análise da vulnerabilidade e risco para as águas subterrâneas da bacia do rio Águeda

Análise da vulnerabilidade e risco para as águas subterrâneas da bacia do rio Águeda

Low temperature behavior of poultry fat biodiesel:diesel blends

AbstractAs the worldwide consumption of poultry meat rises the use of poultry fat as a feedstock for biodiesel production becomes attractive considering economical and environmental reasons. However, poultry fat biodiesel still faces some restrictions due to its poor flow properties at low temperatures. In this study ethylic and methylic poultry fat biodiesels and their blends with diesel were evaluated in terms of flow properties. Modulated Temperature Differential Scanning Calorimetry (MT-DSC) was used to understand the physical meaning of properties as Cold Filter Plugging Point (CFPP), Pour Point (PP) and Cloud Point (CP), widely used in biodiesel characterization. Based on the MT-DSC studies, it was observed that the first crystallization peak temperature had values similar to CFPP and CP. This way CP was found to be associated with the first solidified material and not with the early formation of the first nuclei, as normally reported. On the other hand, these crystals already lead to the flow decrease, as indicate by the CFPP results. PP values were close to the second crystallization peak temperature, not being related to the complete solidification of the fuel

Teledetección e fotointerpretación para el estudio de la evolución de la cuenca del rio Águeda

Teledetección e fotointerpretación para el estudio de la evolución de la cuenca del rio Águeda

II Ciclo de Conferências : Conselho Técnico-Científico: temas atuais em investigação

A obra é constituída pelos resumos das comunicações apresentadas pelos docentes da Escola Superior Agrária do Instituto Politécnico de Castelo Branco e são referentes aos projetos de investigação nos quais estão envolvidos.O atual Conselho Técnico-Científico (CTC) da Escola Superior Agrária de Castelo Branco (ESACB) tomou posse em fevereiro de 2012, tendo decidido dar continuidade ao ciclo de conferências iniciado pelo CTC anterior. Os trabalhos de Investigação, Inovação e Experimentação que foram apresentados demonstram não só o dinamismo e a ligação com a comunidade, como também a preocupação na identificação e resolução de problemas, que acrescentem valor aos produtos e processos que se situam no âmbito das competências desta Escola. Sendo este um objetivo prioritário da missão do IPCB/ESA, a divulgação destas conferências permite chegar a um público mais alargado e abrir caminhos para a concretização de novos projetos, que contribuam de forma efetiva para o desenvolvimento e aumento da competitividade da região e do país