Fruits and seeds are critical food sources for many European passerines during the autumn migration, which in turn contribute to disperse seeds either internally, i.e. after ingestion (endozoochory), or externally, when seeds adhere to the body surface (epizoochory). Despite the recognized importance of birds as seed dispersers, the vast majority of studies focused on endozoochory while the external transport o...
In this paper we specify Turing machines to serve as clocks, rulers,and randomizers of the most basic complexity classes in such a way thatit can be seen as a contribution to the understanding of computationalcomplexity. The article is educational and first ideas about Turing machines,computation and classes are introduced from scratch. However, the expectedexamples of Turing machine computations are focused in...
Brochura de divulgação dos objetivos e principais resultados do projeto PROTECT - Estudos científicos para proteção marinha na costa alentejana.
The aim of the research is to analyze the different aspects associated with the motivation and benefits of certified ISO 9001 companies in Portugal. A total of 426 certified Portuguese companies were surveyed. The response rate was equal to 61.03 percent. Our results suggest that the main motivation for certification were “improvement of quality”, “improvement of company image”, “marketing advantage”, “give emp...
The implicit signature kappa consists of the multiplication and the (omega-1)-power. We describe a procedure to transform each kappa-term over a finite alphabet A into a certain canonical form and show that different canonical forms have different interpretations over some finite semigroup. The procedure of construction of the canonical forms, which is inspired in McCammond's normal form algorithm for omega-te...
The Pin-Reutenauer algorithm gives a method, that can be viewed as a descriptive procedure, to compute the closure in the free group of a regular language with respect to the Hall topology. A similar descriptive procedure is shown to hold for the pseudovariety A of aperiodic semigroups, where the closure is taken in the free aperiodic omega-semigroup. It is inherited by a subpseudovariety of a given pseudov...
Resumo: A hipotonia é a diminuição do tónus muscular, de forma generalizada ou focal, com uma vasta etiologia. Este é o caso de uma lactente de dois meses de idade referenciada à Consulta Externa de Pediatria por hipotonia cervical, sendo este o único achado ao exame objectivo. Apresentava antecedentes de internamento num outro hospital às três semanas de vida por dois supostos episódios convulsivos em apirexia...
Introduction: Accurate recognition of omental infarction has resulted in increasing supporters of non-operative approach. In order to assess the efficacy and safety of conservative management, we surveyed the cases of omental infarction treated at a single institution.Material and Methods: Primary omental infarction treated between 2004 and 2011 were reviewed. Cases recognized by imaging studies were submitted ...
Introdução: A sintomatologia depressiva tem-se revelado prevalente após a cirurgia bariátrica. Este estudo teve como objetivo compreender o papel do peso, alimentação e imagem corporal na sintomatologia depressiva após realização da cirurgia bariátrica.Material e Métodos: Segue um design transversal e possui uma amostra pós-cirúrgica de 52 indivíduos, com um tempo de follow-up entre os 22 e os 132 meses. A aval...
A infecção por parasitas intestinais é um problema de saúde pública, particularmente nos países em desenvolvimento.Todo o programa que vise o controlo da transmissão de parasitas deve assentar numa análise actual da população alvo. Em Portugal os estudos epidemiológicos sobre este tipo de infecção são insuficientes, implicando limitações na avaliação da eficácia dos esquemas terapêuticos com anti-helmínticos.Ob...
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