609 research outputs found
Gastric Perforation due to Fish Bone
Unintentional ingestion of fish bones is a common but frequently unrecognized occurrence at the emergency room. Most ingested fish bones pass through the gastrointestinal tract without complications, but approximately 1% may perforate and cause acute abdomen, peritonitis and/or abscesses, requiring emergent surgery. Clinical presentation is non-specific and computed tomography is essential to confirm the diagnosis and guide the surgery. We present a case of gastric perforation by fish bone and discuss the clinical and radiological challenges in the diagnosis of this condition.info:eu-repo/semantics/publishedVersio
A voltametria cíclica e de varrimento linear unidirecional: suas potencialidades na caraterização de processos de corrosão
Artigo licenciado sob uma Licença Creative Commons: https://creativecommons.org/licenses/by-nc/4.0/deed.pt"O artigo apresenta as técnicas da voltametria cíclica e da voltametria de varrimento linear unidirecional, que são métodos eletroquímicos extremamente úteis e versáteis no estudo do comportamento de um metal ou liga, face a ambientes mais ou menos agressivos. As potencialidades das técnicas são realçadas, assim como as vantagens introduzidas pela instrumentação digital.
Trata-se de um artigo de divulgação, tendo por objetivo ser acessível a engenheiros, técnicos e outros, a trabalhar na área da corrosão. Para exemplificar o tipo de informação que pode ser obtida são apresentados resultados de vários estudos realizados pelos autores.
Human case of West Nile neuroinvasive disease in Portugal, summer 2015
A case of West Nile virus (WNV) infection was reported in the Algarve region, Portugal, in the first week of September 2015. WNV is known to circulate in Portugal, with occasional reports in horses and birds (2004 to 2011) and very sporadically human cases (in 2004 and in 2010). Here we present the clinical and laboratory aspects related to the first human case of West Nile neuroinvasive disease reported in Portugal
A refinement relation for families of timed automata
Software Product Lines (SPLs) are families of systems that
share a high number of common assets while differing in others. In
component-based systems, components themselves can be SPLs, i.e., each
component can be seen as a family of variations, with different interfaces
and functionalities, typically parameterized by a set of features and a
feature model that specifies the valid combinations of features. This paper
explores how to safely replace such families of components with more
refined ones. We propose a notion of refinement for Interface Featured
Timed Automata (IFTA), a formalism to model families of timed automata
with support for multi-action transitions. We separate the notion
of IFTA refinement into behavioral and variability refinement, i.e., the
refinement of the underlying timed automata and feature model. Furthermore,
we define behavioral refinement for the semantic level, i.e.,
transition systems, as an alternating simulation between systems, and
lift this definition to IFTA refinement. We illustrate this notion with examples
throughout the text and show that refinement is a pre-order and
compositional.European Regional Development Fund (ERDF) through the Operational Programme for Competitiveness and Internationalisation (COMPETE 2020), and by National Funds through the Portuguese funding agency, FCT, within project TRUST, POCI-01-0145- FEDER-016826. In addition the first and second author are supported by FCT grants PD/BD/52238/2013 and SFRH/BPD/91908/2012, respectivel
PHYTOPLANKTON CHLOROPHYLL a ALONG SIX BIGHTS USED FOR MUSSEL CULTURE IN THE LITTORAL OF SANTA CATARINA.
A biomassa do fitoplâncton em seis enseadas do litoral catarinense utilizadas para o cultivo de moluscos marinhos foi avaliada por meio da clorofila a com a utilização da técnica de cromatografia líquida de alta eficiência (CLAE) ao longo de um ano. Os valores médios de Cla a foram relativamente baixos, variando entre 1,63 e 3,36 µg.l-1, com o máximo de 10,57 µg.l-1, observado na Praia Alegre, no município de Penha. O resultados indicam um grau geral de trofia moderado e similar para as enseadas estudadas.Phytoplankton biomass, as chlorophyll a was quantified along 6 bights used for mussel culture in the coastal area of Santa Catarina State. Chlorophyll a, determined by high performance liquid chromatography (HPLC), showed similar mean values among the sites, ranging from 1,63 to 3,36 µg.l-1, with a maximum for 10.57 µg.l-1 found in Praia Alegre, Penha, SC. The results indicates that all bight show a similar biomass and a moderate trophic grade
Composing Families of Timed Automata
Featured Timed Automata (FTA) is a formalism that enables the verification of an entire Software Product Line (SPL), by capturing its behavior in a single model instead of product-by-product. However, it disregards compositional aspects inherent to SPL development. This paper introduces Interface FTA (IFTA), which extends FTA with variable interfaces that restrict the way automata can be composed, and with support for transitions with atomic multiple actions, simplifying the design. To support modular composition, a set of Reo connectors are modelled as IFTA. This separation of concerns increases reusability of functionality across products, and simplifies modelling, maintainability, and extension of SPLs. We show how IFTA can be easily translated into FTA and into networks of Timed Automata supported by UPPAAL. We illustrate this with a case study from the electronic government domain.POCI-01-0145-FEDER-016826. NORTE-01-0145-FEDER-00003
Depth of cure of bulk-fill light cured composite resins with different initiators
Poster presented at the 3rd International Congress of CiiEM - Research and Innovation in Human and Health Sciences, Monte da Caparica, Portugal, 20-22 June 2018N/
Direct Percutaneous Endoscopic Jejunostomy Using Single-Balloon Enteroscopy without Fluoroscopy: a Case Series
BACKGROUND:
Direct percutaneous endoscopic jejunostomy (DPEJ) is a useful method to provide enteral nutrition to individuals when gastric feeding is not possible or contraindicated. The aim of this study was to analyze the efficacy and safety of DPEJ tube placement with the Gauderer-Ponsky technique by the pull method, using single-balloon enteroscopy (SBE) without fluoroscopy.
METHODS:
This is a retrospective analysis of patients undergoing SBE for DPEJ placement in a referral hospital between January 2010 and March 2016. Technical success, clinical success and procedure related complications were recorded.
RESULTS:
Twenty-three patients were included (17 males, median age 71 years, range 37-93 years). The most frequent indications for DPEJ were gastroesophageal cancer (n = 10) and neurological disease (n = 8). Eighty-seven percent of the patients had a contraindication to percutaneous endoscopic gastrostomy (PEG) and PEG was unsuccessful in the remaining patients. The technical success rate was 83% (19/23), transillumination was not possible in three patients and an accidental exteriorization of the bumper resulting in a jejunal perforation occurred in one patient. The clinical success was 100% (19/19). The median follow-up was five months (range 1-35 months). Apart from the case of jejunal perforation and the two cases of accidental exteriorization, there were no other complications during follow-up. The 6-month survival was 65.8% and the 1-year survival was 49.3%.
CONCLUSION:
DPEJ can be carried out successfully via SBE without fluoroscopy with a low rate of significant adverse events. Although, leaving the overtube in place during the bumper pulling can be useful for distal jejunal loops, it can be safely removed in proximal loops to minimize complications.info:eu-repo/semantics/publishedVersio
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