Preparation of collagen-hydroxyapatite biocomposite scaffolds by cryogelation method for tissue engineering applications

Tese de mestrado. Engenharia Biomédica. Universidade do Porto. Faculdade de Engenharia. 201

Developing Primary Pre-service Teachers\u27 Mathematical Content Knowledge During Practicum Teaching

While it is recognised that a teachers’ mathematical content knowledge (MCK) is crucial for teaching, less is known about when different categories of MCK develop during teacher education. This paper reports on two primary pre-service teachers, whose MCK was investigated during their practicum experiences in first, second and fourth years of a four-year Bachelor of Education program. The results identify when and under what conditions pre-service teachers’ developed different categories of their MCK during practicum. Factors that assisted pre-service teachers to develop their MCK included program structure providing breadth and depth of experiences; sustained engagement for learning MCK; and quality ofpre-service teachers’ learning experiences

Cuidados de enfermagem especializado à pessoa em situação crítica acometida de enfarte agudo do miocárdio: do pré-hospitalar à Unidade de Cuidados Intensivos Coronários

No âmbito do V Curso de Mestrado em Enfermagem Médico-cirúrgica da Escola Superior de Enfermagem de São José de Cluny, elaborei o Relatório de Mestrado para obtenção do grau de Mestre em Enfermagem Médico-Cirúrgica intitulado “Cuidados de Enfermagem Especializados à Pessoa em Situação Crítica acometida de Enfarte Agudo do Miocárdio: do pré-hospitalar à Unidade de Cuidados Intensivos Coronários”. O relatório transparece todo o percurso realizado ao longo das práticas clínicas para a consolidação das competências comuns e específicas do enfermeiro especialista em Enfermagem Médico-cirúrgica, na vertente dos cuidados à pessoa em situação crítica. Revela o meu particular interesse pelo cuidado especializado à pessoa em situação crítica acometida de enfarte agudo do miocárdio, tendo sido este o foco do meu projeto de autoformação. Está organizado em dois capítulos, sendo que o primeiro ilustra o enquadramento da área selecionada e o segundo diz respeito ao percurso desenvolvido para a aquisição de competências de enfermagem, inicialmente as competências comuns do enfermeiro especialista, posteriormente as competências especializadas, procurando sempre ilustrar a evolução até às competências de Mestre. Ao longo deste relatório, utilizei uma metodologia descritiva, reflexiva e analítica fundamentada na evidência científica, com vista a dar visibilidade às diferentes atividades desenvolvidas ao longo das práticas clínicas, nos diferentes domínios de competências comuns e específicas do enfermeiro especialista, bem como as competências de Mestre. Numa trajetória rumo à aquisição de conhecimentos, competências e atitudes que reflitam o grau académico deste curso, o relatório traduz ainda a aplicação de conhecimentos científicos no contexto do serviço de urgência, cuidados intensivos polivalente, pré-hospitalar e cuidados intensivos coronários, existindo uma evidente aposta no desenvolvimento das competências de autoaprendizagem.As part of the V Master's Course in Medical-Surgical Nursing at the São José de Cluny School of Nursing, i wrote the report entitled “Specialized Care for the Critical Person with Myocardial Infarction: from the pre-hospitalar context to the Coronary Intensive Care Unit”. The report shows the entire path taken during clinical practices to consolidate the common and specific skills of the specialist nurse in Medical-Surgical Nursing, in terms of care for the person in a critical situation. It reveals my particular interest in specialized care for the critically ill person with acute myocardial infarction, which was the focus of my self-training project. It is organized in two chapters, the first of which illustrates the framework of the selected area and the second concerns the path developed for the acquisition of nursing competences, initially the common competences of the specialist nurse, later the specialized competences, always seeking to illustrate the evolution up to Master's skills. Throughout this report, I used a descriptive, reflective and analytical methodology based on scientific evidence, in order to give visibility to the different activities developed during clinical practices, in the different domains of common and specific competences of the specialist nurse, as well as the Master competencies. On a path towards the acquisition of knowledge, skills and attitudes that reflect the academic degree of this course, the report also reflects the application of scientific knowledge in the context of the emergency service, multipurpose intensive care, pre-hospital and coronary intensive care, with an evident interest on the development of self-learning skills. In a trajectory towards the acquisition of knowledge, skills and attitudes that reflect the academic degree of this course, the report also reflects the application of scientific knowledge in this context of clinical teaching, with an evident commitment to the development of self-learning skills

A look at the Portuguese presence in Rome: Msgr. José de Castro in the framework of a narrative of patriotic glorification

Enquanto Conselheiro Eclesiástico da Legação de Portugal junto da Santa Sé (1930-1944), Mons. José de Castro retirou máximo partido dos arquivos romanos, concretizando um apreciável levantamento e sistematização de fontes sobre acontecimentos e figuras que notabilizaram Portugal em Roma e no mundo. Dali resultou, entre outras obras, Portugal em Roma (1939), marco na obra bibliográfica do sacerdote, diplomata, jornalista e investigador transmontano. Com destaque para a correspondência inédita, e na passagem dos 80 anos da publicação da obra, o presente artigo traça-lhe a motivação e o contexto, evoca as grandes celebrações dos centenários da independência, bem como as negociações para a assinatura da Concordata e do Acordo Missionário entre o Estado português e a Santa Sé.As Ecclesiastical Counselor of the Legation of Portugal to the Holy See (1930-1944), Monsignor José de Castro took maximum advantage of the roman archives, materializing an appreciable survey and systematization of sources about events and figures that made Portugal remarkable in Rome and in the world. From these efforts resulted, among other works, Portugal em Roma (1939), a landmark in the bibliographical work of the priest, diplomat, journalist and researcher of Trás-os-Montes. With emphasis on unedited correspondence, and in the 80 years since the publication of the work, this article traces its motivation and the context, evokes the great celebrations of the centenaries of independence, as well the negotiations for the signing of the Concordat and the Missionary Agreement between the portuguese State and the Holy See.info:eu-repo/semantics/publishedVersio

Um olhar sobre a presença portuguesa em Roma: Mons. José de Castro no quadro de uma narrativa de glorificação Patriótica

As Ecclesiastical Counselor of the Legation of Portugal to the Holy See (1930-1944), Monsignor José de Castro took maximum advantage of the roman archives, materializing an appreciable survey and systematization of sources about events and figures that made Portugal remarkable in Rome and in the world. From these efforts resulted, among other works, Portugal em Roma (1939), a landmark in the bibliographical work of the priest, diplomat, journalist and researcher of Trás-os-Montes. With emphasis on unedited correspondence, and in the 80 years since the publication of the work, this article traces its motivation and the context, evokes the great celebrations of the centenaries of independence, as well the negotiations for the signing of the Concordat and the Missionary Agreement between the portuguese State and the Holy See.Enquanto Conselheiro Eclesiástico da Legação de Portugal junto da Santa Sé (1930-1944), Mons. José de Castro retirou máximo partido dos arquivos romanos, concretizando um apreciável levantamento e sistematização de fontes sobre acontecimentos e figuras que notabilizaram Portugal em Roma e no mundo. Dali resultou, entre outras obras, Portugal em Roma (1939), marco na obra bibliográfica do sacerdote, diplomata, jornalista e investigador transmontano. Com destaque para a correspondência inédita, e na passagem dos 80 anos da publicação da obra, o presente artigo traça-lhe a motivação e o contexto, evoca as grandes celebrações dos centenários da independência, bem como as negociações para a assinatura da Concordata e do Acordo Missionário entre o Estado português e a Santa Sé

Can the integration of multiple biomarkers and sediment geochemistry aid solving the complexity of sediment risk assessment?: a case study with a benthic fish

Surveying toxicity of complex geochemical media as aquatic sediments often yields results that are either difficult to interpret or even contradictory to acknowledged theory. Multi-level biomarkers were investigated in a benthic fish exposed to estuarine sediments through laboratory and in situ bioassays, to evaluate their employment either in ecological risk assessment or in more mechanistic approaches to assess sediment-bound toxicity. Biomarkers reflecting lesions (such as genotoxicity or histopathology), regardless of their low or absent specificity to contaminants, are efficient in segregating exposure to contaminated from uncontaminated sediments even when classical biomarkers like CYP1A and metallothionein induction are inconclusive. Conversely, proteomics and gene transcription analyses provided information on the mechanics of toxicity and aided explaining response variation as a function of metabolic imbalance and impairment of defences against insult. In situ bioassays, although less expedite and more affected by confounding factors, produced data better correlated to overall sediment contamination.info:eu-repo/semantics/publishedVersio

Aumento de la concentración de elementos traza en tejidos de la almeja Ruditapes decussatus trasplantada a zonas influenciadas por actividades humanas (ría Formosa, Portugal)

To examine the extent to which human activities near the Ria Formosa coastal lagoon influence the accumulation of trace elements (TE) in Ruditapes decussatus, individuals were transplanted from a natural bank located in the lower lagoon to three sites located in clam growth grounds under the influence of a small city (Faro), a fish farming centre (Olhão) and a site near the lagoon inlet (Lavajo). Concentrations were determined in substrate of the clam grounds and in the digestive gland, gills, mantle plus siphons, and remaining tissues of clams in four periods of the year. These measurements were accomplished with the monthly survey of the gametogenic stages, condition index, proteins, glycogen, total lipids, pH and osmolarity of hemolymph. Arsenic, Cu, Mn, V, Cr and Pb were preferentially linked to the digestive gland, while Cd was linked to the gills. TE concentrations in the digestive gland and remaining tissues were higher in winter, most likely reflecting additional inputs associated with rain. The lack of disruptions in biological parameters and the prolonged period of spawning and gonad recovery in clams suggest that the current TE availability in the lagoon has a minor influence on the reproductive cycle and hence on clam production.Para examinar en qué medida las actividades humanas cercanas a la laguna costera ría Formosa influyen en la acumulación de elementos traza (ET) en Ruditapes decussatus, se trasplantaron individuos desde un banco natural situado en la parte baja de la laguna a tres sitios localizados en zonas de cultivo de almejas bajo la influencia de una ciudad pequeña (Faro), un centro piscícola (Olhão) y cerca de la entrada de una laguna (Lavajo). Se determinaron las concentraciones de ET en el substrato de locales y en la glándula digestiva, branquias, manto más sifones, y en los tejidos restantes de las almejas en cuatro períodos a lo largo de un año. Estas mediciones fueron realizadas con el estudio mensual de las etapas gametógenas, índice de condición, proteínas, glicóneo, lípidos totales, pH y osmolaridad de la hemolinfa. El As, Cu, Mn, V, Cr y Pb fueron relacionados preferencialmente a la glándula digestiva, mientras que el Cd fue a las branquias. La concentración de ET en la glándula digestiva y los tejidos restantes fue más elevada en invierno, probablemente reflejando los aportes adicionales asociados con la lluvia. La falta de alteraciones de los parámetros biológicos, el período prolongado de desove y la recuperación de las gónadas en las almejas sugieren que la disponibilidad actual de ET en la laguna tienen una influencia menor durante el ciclo reproductivo y, por lo tanto, en la producción de almejas

Laboratorial study of soil-cement mixtures for aplication in Jet Grouting

Neste artigo é apresentado o estudo laboratorial de formulações de solo-cimento para suporte da realização de colunas teste de Jet Grouting. São apresentados os resultados dos ensaios de caracterização das formulações estudadas, nomeadamente a resistência à compressão simples (450 provetes), módulos de deformabilidade inicial, máximo, tangente e secante a 50% (18 provetes) e a massa volúmica das misturas de solo-cimento (468 provetes). Os módulos de deformabilidade foram obtidos através da técnica de medição local recorrendo ao uso de LDT’s. Dos resultados obtidos foi possível obter várias relações entre as propriedades mecânicas e entre estas e as propriedades físicas estudadas, as quais se julga virem a constituir uma base de dados importante para futuras aplicações em condições comparáveis.In this paper is presented a laboratorial study of different formulations of soil-cement mixtures to support field trial of Jet Grouting columns. Laboratorial tests results of mechanical and physical characterization are discussed, specifically the uniaxial compressive strength (450 specimens), initial, maximum, secant ant tangent to 50% stiffness moduli (18 specimens) and density of the soil-cement mixtures (468 specimens). The stiffness moduli were obtained using the technique of measurement of the local deformations of the samples with LDT’s. The results were able to validate the possibility to use some studied soil-cement formulations in Jet Grouting columns. It was also possible to establish some relations between the mechanical properties and between the mechanical and physical properties, which could represent an important database for future applications in similar situations.Universidade de Coimbra. Faculdade de Ciências e Tecnologia (FCT-UC