Macrobenthic community characterisation of an estuary from the western coast of Portugal (Sado estuary) prior to dredging operations

The present work is part of an environmental assessment undertaken in the Sado estuary (Southern Channel and Mitrena Peninsula), western coast of Portugal, on February 1999 prior to maintenance dredging works. The macrofauna communities in the study area are generally rich and abundant. A single exception was found: a sampling site in the Mitrena area, with extreme impoverishment, probably related to sediment characteristics, i.e., fluid mud, unfavourable to the establishment of individuals. A comparative analysis of these macrofauna results to previous data from 1986 showed that this biological component had suffered no significant changes, especially as far as the most characteristic species. Although the Southern Channel had been dredged in 1995, no clear signs of such operation were apparent in the present survey. The main differences between both periods (1986-1999) was an increase in the abundance and presence of some common species of organic enriched areas, such as Tharyx sp., Corbula gibba, Spiochaetopterus costarum and Ampelisca spp., which might be related to organic enrichment in the Southern Channel. The joint consideration of our results on benthic macrofauna and those regarding sediment contamination and sediment bioassays, performed at the same time by other researchers, does not indicate the necessity of any particular constraints on the dredging operations.El presente trabajo forma parte de un estudio de impacto ambiental que fue llevado a cabo en el estuario del río Sado (canal sur y península de Mitrena), costa oeste de Portugal, en febrero de 1999, previa a la realización de operaciones de dragados. Los resultados de las comunidades macrobentónicas obtenidos muestran que, en general, el área estudiada es rica en especies y abundante en individuos excepto una estación de la zona del Mitrena, cuya pobreza biológica puede estar asociada con las características del sedimento, fango fluido, que no posibilita el establecimiento de los individuos. La comparación entre los datos biológicos recolectados en 1986 y 1999 ha revelado la semejanza entre las comunidades de macrofauna bentónica de los dos periodos, especialmente en relación con las especies características, y que el canal sur (dragado en 1995) no presenta señales del efecto de dragado. Las principales diferencias entre los dos periodos son un incremento en la abundancia y presencia de determinadas especies asociadas con áreas orgánicamente enriquecidas, como Tharyx sp., Corbula gibba (prácticamente ausentes del canal sur en 1986), Spiochaetopterus costarum y Ampelisca spp., que pueden estar relacionados con el incremento de la materia orgánica en el área estudiada. El conjunto de la información obtenida en el presente trabajo (comunidades macrobentónicas) y en otros estudios -contaminación de zona y bioensayos- hechos al mismo tiempo por otros investigadores, no evidencian inconveniente para el dragado del área seleccionada.Instituto Español de Oceanografí

Leiomioma da Uretra Feminina - Revisão da Literatura a Propósito de Caso Clínico

Oleiomioma da uretra é uma patologia rara, estando descritos cerca de uma centena de casos na literatura. São tumores benignos, constituídos por músculo liso e surgem mais frequentemente na idade fértil.Otratamento é cirúrgico com excisão da massa, existindo contudo possibilidade de recidiva local. Apresenta-seumcaso clínico de leiomioma da uretra e realizou-se revisão da literatura

Serious complications of low weight molecular heparins - five clinical case reports

Detectaram-se complicações hemorrágicas graves das heparinas de baixo peso molecular num período de dois anos em cinco doentes: três do sexo feminino e dois do sexo masculino, com idade média superior a 75 anos. A indicação para a utilização de HBPM foi: suspeita de Trombose venosa profunda(TVP)/ Tromboembolismo pulmonar(TEP) (dois casos), angor instável (um caso), profilaxia TVP/TEP (dois casos). As complicações observadas foram hematoma retroperitonial espontâneo com choque hipovolémico (um caso), sufusão hemorrágica com hematomas intramusculares (um caso), hematoma periumbilical extenso (um caso) e sufusão hemorrágica (dois casos). Tal como é descrito na literatura, verificou-se que, para além da idade avançada, todos os doentes apresentavam factores de risco adicionais para hemorragia, a saber: insuficiência renal crónica, doença hepática crónica com alterações da coagulação e terapêutica associada com ácido acetilsalicílico e corticóides sistémicos. Concluiu-se que os doentes sujeitos a terapêutica com HBPM e com risco hemorrágico associado devem ser criteriosamente identificados e monitorizados, de modo a prevenir complicações graves desta terapêutica

Static Safety for an Actor Dedicated Process Calculus by Abstract Interpretation

The actor model eases the definition of concurrent programs with non uniform behaviors. Static analysis of such a model was previously done in a data-flow oriented way, with type systems. This approach was based on constraint set resolution and was not able to deal with precise properties for communications of behaviors. We present here a new approach, control-flow oriented, based on the abstract interpretation framework, able to deal with communication of behaviors. Within our new analyses, we are able to verify most of the previous properties we observed as well as new ones, principally based on occurrence counting

Exposição das crianças ao fumo ambiental do tabaco em casa e no carro

A exposição das crianças ao Fumo Ambiental do Tabaco (FAT) está associada a graves problemas para a sua saúde, tais como maior risco de infeções agudas das vias aéreas inferiores, maior probabilidade de infeções respiratórias de repetição, risco acrescido de infeções nos ouvidos, indução e exacerbação de asma e enfisema pulmonar. A exposição ao FAT é especialmente grave para as crianças asmáticas. Esta exposição ocorre, na maioria dos casos, quando os pais e/ou outro convivente fumam no domicílio e/ou no carro

European Respiratory Society International Congress 2018: four shades of epidemiology and tobacco control

In this article, early career members and experienced members of the Epidemiology and Environment Assembly of the European Respiratory Society highlight and summarise a selection of six sessions from the Society’s annual congress, which in 2018 was held in Paris, France. The topics covered in these sessions span from cutting-edge molecular epidemiology of lung function to clinical, occupational and environmental epidemiology of respiratory disease, and from emergent tobacco products to tobacco control

Modelling and Simulation of Asynchronous Real-Time Systems using Timed Rebeca

In this paper we propose an extension of the Rebeca language that can be used to model distributed and asynchronous systems with timing constraints. We provide the formal semantics of the language using Structural Operational Semantics, and show its expressiveness by means of examples. We developed a tool for automated translation from timed Rebeca to the Erlang language, which provides a first implementation of timed Rebeca. We can use the tool to set the parameters of timed Rebeca models, which represent the environment and component variables, and use McErlang to run multiple simulations for different settings. Timed Rebeca restricts the modeller to a pure asynchronous actor-based paradigm, where the structure of the model represents the service oriented architecture, while the computational model matches the network infrastructure. Simulation is shown to be an effective analysis support, specially where model checking faces almost immediate state explosion in an asynchronous setting.Comment: In Proceedings FOCLASA 2011, arXiv:1107.584

Communicating Processes with Data for Supervisory Coordination

We employ supervisory controllers to safely coordinate high-level discrete(-event) behavior of distributed components of complex systems. Supervisory controllers observe discrete-event system behavior, make a decision on allowed activities, and communicate the control signals to the involved parties. Models of the supervisory controllers can be automatically synthesized based on formal models of the system components and a formalization of the safe coordination (control) requirements. Based on the obtained models, code generation can be used to implement the supervisory controllers in software, on a PLC, or an embedded (micro)processor. In this article, we develop a process theory with data that supports a model-based systems engineering framework for supervisory coordination. We employ communication to distinguish between the different flows of information, i.e., observation and supervision, whereas we employ data to specify the coordination requirements more compactly, and to increase the expressivity of the framework. To illustrate the framework, we remodel an industrial case study involving coordination of maintenance procedures of a printing process of a high-tech Oce printer.Comment: In Proceedings FOCLASA 2012, arXiv:1208.432