113 research outputs found

    Eucalyptus globulus Labill. regeneration from seeds in Portugal´s mainland

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    Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de Agronomia /ULEucalyptus globulus Labill. is a plant species native to SE Australia, Tasmania and adjacent islands. It was introduced in Portugal in the mid-19th century. In 2005/06, it was the most abundant tree species in 23% of the afforested area in Portugal’s mainland. Forests dominated by this species are one of the most fire-prone forest types in Portugal. This thesis was aimed to contribute to a better understanding of the naturalization process in Portugal’s mainland, with a special focus on the role of fire in this process. A multiscale approach was used to address the problem. Natural regeneration of E. globulus from seeds occurs in every natural region of the territory and may reach high densities in some locations. Spatial distribution of both wildling occurrence and density is not uniform on national (mainland), regional, local, and stand scales. The existence of seed sources (reproductive trees) is of primary importance. Climatic and soil conditions affect the broad scale distribution of this regeneration and its performance. Site quality and forest management are fundamental on a local scale. Fire clearly plays a relevant role, inducing seed release from burnt trees, providing safe microsites for plant recruitment and development, and allowing for the establishment of plants in the mid-term. Moreover, litter charring enables the early development of E. globulus in otherwise toxic conditions. Maximum wildling densities observed were 0.3 plants m-2 and 9.9 plants m-2 inside unburnt and burnt plantations, respectively. Portuguese plantations, from a region with nationally moderate levels of seminal regeneration, had mean wildling densities 3.1 times higher than Australian plantations, from seven regions either inside or outside the native range. In summary, cultivated trees are able to produce offspring, which grows, establishes and may produce seeds next to parent trees, in many parts of Portugal’s mainland. Therefore, naturalization is in progress and widespread in this territory, and fire does facilitate itN/

    Comunicação interna como factor de motivação dos colaboradores no contexto laboral : estudo de caso realizado durante o estágio no Grupo Mota-Engil

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    Actualmente, o impacto da comunicação no sector empresarial é fundamental e decisivo, pelo que qualquer organização deve usá-la enquanto uma importante ferramenta de desenvolvimento, tornando-a cada vez mais competitiva e funcional, através de uma boa comunicação interna, mobilizadora do capital humano. Com o objectivo de perspectivar a comunicação interna da empresa e o papel que desempenha na motivação dos colaboradores em contexto laboral, a presente investigação, realizada durante um estágio no Grupo Mota-Engil, conduziu á obtenção de dados que permitem entender, como o desafio de uma comunicação interna bem estruturada e alicerçada num modelo sustentado de liderança, se reflecte e interage com a motivação e satisfação dos colaboradores e no desenvolvimento das organizações.Nowadays, the impact of communication inside companies is crucial and decisive, so any organization should use it as an important development tool, making it increasingly competitive and functional, through a good internal communication, mobilizing human capital. In order to foresee the company´s internal communication and the role it plays on employees motivation, this research, result of an internship on Mota-Engil Group, had lead to data acquisition needed to understand how the challenge of a well-structured internal communication, based on a sustainable leadership model, reflect and interact with employees’ motivation and satisfaction, and with the companies’ development

    Tradução de elementos visuais e textuais da Toolbox do Projeto EUPATI

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    A Investigação e Desenvolvimento (I&D) de medicamentos tem um papel fulcral na nossa sociedade, contribuindo com inúmeros benefícios para a melhoria da qualidade de vida das populações e para o avanço científico. Para que estes sejam possíveis de alcançar, é indispensável o contributo dos doentes no processo de desenvolvimento de novos medicamentos. Por forma a que esta participação seja efetiva, é necessário capacitar os doentes e seus representantes com as competências adequadas potenciando, assim, a sua futura participação neste processo. O projeto europeu EUPATI (European Patients’ Academy on Therapeutic Innovation) pretende responder a este desafio com iniciativas dedicadas a formar doentes peritos em todo o processo de desenvolvimento de novos medicamentos. Este projeto só atinge o seu potencial máximo ao ser disponibilizado em diferentes idiomas, de modo a garantir que doentes de vários países tenham acesso à informação formativa necessária. Logo, surge a tarefa fulcral de traduzir os seus elementos. Para esse efeito, o presente trabalho pressupõe a tradução, do inglês para o português, de elementos visuais e textuais inseridos na Toolbox do projeto EUPATI, bem como a explanação do processo de tradução. Apresenta o projeto bem como o domínio do mesmo, passando por uma breve descrição do processo de Investigação e Desenvolvimento. São abordadas as metodologias utilizadas para o concluir, discutindo cada fase do processo de tradução, assim como os principais problemas de tradução encontrados, e oferecendo, no final, uma análise crítica do trabalho realizado.Drug Research and Development (R&D) has a pivotal role in our society, given that it contributes with numerous benefits to the improvement of the quality of life of the population and to scientific advancement. For these benefits to be achieved, the role of the patients in the developmental process of new medicines is indispensable. To ensure that this participation is effective, it is necessary to enable patients and their advocates with the adequate competences and in this way promote their future participation in this process. The European project EUPATI (European Patients’ Academy) endeavors to fulfill this challenge with initiatives dedicated to the training of expert patients and their integration into the whole process of developing of new medicines. This project can only reach its maximum potential by being available in different languages, in order to guarantee that patients from different countries have access to the necessary educational information. There is, therefore, the need to translate these elements. To this effect, this assignment involves the translation, from English into Portuguese, of visual and textual elements from the EUPATI Project’s Toolbox, as well as the explanation of the translation process. It introduces the project as well as its domain providing a brief description of the Research and Development process. It presents the methodologies used to conclude it, discussing each step of the translation process, as well as the main translation difficulties found, and offering, at the end, a critical analysis of the whole projectMestrado em Tradução Especializad

    A casa e o método. Concepções de vivência e identidade

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    Dissertação para obtenção do grau de Mestre em Arquitectura

    Tourist guide - SW Portugal: aplicação para dispositivos móveis

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    O Projeto apresenta-se segmentado em duas partes distintas mas indivisíveis, a primeira de natureza teórica, e a segunda de carácter prático e experimental. A primeira parte tem como objetivo apresentar, definir e explicar um conjunto de conceitos fundamentais para uma correta contextualização e clarificação da segunda parte. Inicialmente é clarificada a importância das aplicações no mercado e na vida do utilizador, bem como o seu processo de desenvolvimento. É destacada também a forma como a interface deve ser pensada de modo a facilitar a sua utilização e tendo em conta a interação com o utilizador. Para além disso apresenta a importância da aplicação como ferramenta de marketing e a forma como é usada em estratégias de comunicação. É também feito um breve estudo sobre alguns aspetos a ter em conta durante a construção do projeto da aplicação, tais como a marca, cor, tipografia e signo. Finalmente, a segunda parte, que tem um carácter prático e experimental, é destacado o tema do projeto e é afirmada toda a metodologia e os conceitos relevantes na execução da aplicação “Tourist Guide – SW Portugal”.The project is segmented into two distinct but indivisible parts, the first one of a more theoretical nature, and the second one transmitting a more practical and experimental vision. The first part aims to introduce, define and explain fundamental concepts for a correct contextualization and clarification of the second part. Initially it clarifies the relevance of the applications (apps) in the market and in the user’s life, as well as their development process. It is also highlighted how the interface should be considered in terms of the usability and taking into account the user interaction. Furthermore, it’s shown the importance of the app as a marketing tool and the way it is used in communication strategies. Moreover it has a short study about some facts to take into account during the construction of the app design, such as the brand, colour, typography, and sign. Finally, the second part presents a practical and experimental view emphasizing the theme of the project and stating the methodology and the relevant concepts in the execution of the application "Tourist Guide - SW Portugal"

    Intervenção do enfermeiro especialista na prevenção e monitorização de extravasamento de citostáticos

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    O presente relatório, encontra-se inserido no plano de estudos do 6º Curso de Mestrado e Pós-Licenciatura em Enfermagem Médico-Cirúrgica, Vertente de Enfermagem Oncológica, e tem como objetivo espelhar o desenvolvimento de um projeto para a aquisição de competências de Enfermeiro Especialista. Ao longo do curso foi desenvolvido um projeto de intervenção com impacto na melhoria contínua da qualidade dos cuidados de enfermagem na esfera da prevenção e monitorização de extravasamentos com citostáticos. Firmando que a prática clínica se deve apoiar em evidência científica recente, foi estabelecido como ponto de partida a questão de investigação: “Qual o papel do enfermeiro especialista na prevenção e monitorização de extravasamento de citostáticos?”. Os resultados da pesquisa realizada permitiram compreender que a atuação do enfermeiro especialista deve explanar um conjunto de intervenções que contribuem para a prevenção e monitorização do extravasamento de citostáticos, tais como conhecimentos na área da administração segura de terapêutica citostática, identificação dos fatores de risco, reconhecimento precoce e diagnóstico diferencial do extravasamento, educação do doente e da equipa de enfermagem, o acompanhamento do doente e a monitorização dos eventos. No desenvolvimento deste relatório encontram-se refletidas as competências desenvolvidas para contributo da prática de enfermeiro especialista e mestre no âmbito desta área de intervenção, resultantes da realização de estágios, nos quais foram delineados objetivos e realizadas atividades para a concretização da implementação do projeto. A relevância do estudo desta problemática para a prática clínica traduz-se no aumento da sensibilização da equipa de enfermagem na manutenção de um sistema contínuo de vigilância quer dos processos, quer dos resultados da administração de quimioterapia, com intuito de incrementar a qualidade do cuidado inerente à profissão e à segurança do doente sendo, por isso, importante sustentar a implementação das intervenções no referencial teórico de Avedis Donabedian (2003), refletindo o cuidado baseado na excelência

    Characterisation of Archaeological High-tin Bronze Corrosion Structures

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    Part of this work was carried out in the framework of the projects: 'Singing Bronze', funded by Banco Santander through the prize Santander/NOVA 2016; 'IberianTin' (PTDC/HAR-ARQ/32290/2017), funded by European Regional Development Fund funds through the regional program of Lisbon and through national funds through the Fundacao para a Ciencia e a Tecnologia (FCT) (Foundation for Science and Technology); UID/CTM/50025/2019 granted to CENIMAT/i3N, financed through FEDER funds by COMPETE 2020 and national funds through FCT.Since ancient times, the use of high-tin bronze alloys (>17 wt.%) has been mainly limited to the production of specific objects such as mirrors and bells. High-tin bronzes can show distinctive colour reflection, as well as mechanical properties and corrosion resistance that clearly distinguish them from the classical bronze composition (with 8–12 wt.% tin). In the present study samples of archaeological high-tin bronze bells were studied by optical microscopy, SEM-EDX, and Raman imaging with the aim of characterising their microstructural long-term corrosion patterns. Results show the presence of high quantities of δ phase, when compared to the classical bronze composition, which makes some corrosion structures more visible in these alloys. The corrosion morphologies show selective corrosion of different metal phases along depth of corrosion, which were attributed to different oxygen potentials. This study proposes a classification of four types of corrosion structures occurring in two-phase bronzes as a consequence of aeration conditions during burial time and aeration within the corrosion structure.authorsversionepub_ahead_of_prin

    Microsite Drivers of Natural Seed Regeneration of Eucalyptus globulus Labill. in Burnt Plantations

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    Fire regimes are changing in several regions of the world. In those regions, some exotic species may be better adapted to new regimes than the native species. This study focused on identifying the microsite characteristics associated with the occurrence of post-fire Eucalyptus globulus regeneration from seeds, outside the species native-range. This information is important in helping to assess the naturalization status of the species, to understand its invasion risk, and to manage wildlings in plantations. To characterize the establishment niche, pairs of microsites (sapling presence/ absence) were sampled in four salvage-logged plantations of E. globulus two years after fire (20 pairs/plantation). Microsites of wildlings from three size classes and control microsites were established in one of these plantations (20 quartets) in order to characterize the recruitment niche and to assess ontogenic niche shifts. Two post-fire wildling cohorts were identified. The first emerged just after fire and was abundant. The second emerged after logging and was scarce, probably due to seed limitation. First-cohort wildlings were observed in microsites characterized by a high incidence of fire-related variables (charcoal, ash, increased soil pH and K). The aggregated distribution of these wildlings and their association with other species may indicate the existence of facilitative relationships and/or the exploitation of resource-rich patches. All these factors were relevant for first-cohort persistence and likely also for its establishment and recruitment. Second-cohort wildlings occurred in microsites where salvage-logging disturbance was evident, showing the importance of this disturbance for its emergence. Wildling size diversity was explained by the two recruitment events and by the asymmetrical competition between wildlings and adults. No niche shifts were detected. The high densities of E. globulus wildlings found established in burnt plantations indicated naturalization was in progress. The timing of major recruitment events and the phenology of the species should be considered for monitoring this regeneration and scheduling control interventions, if requiredinfo:eu-repo/semantics/publishedVersio

    Microfluidic Organ/Body-on-a-Chip Devices at the Convergence of Biology and Microengineering

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    Recent advances in biomedical technologies are mostly related to the convergence of biology with microengineering. For instance, microfluidic devices are now commonly found in most research centers, clinics and hospitals, contributing to more accurate studies and therapies as powerful tools for drug delivery, monitoring of specific analytes, and medical diagnostics. Most remarkably, integration of cellularized constructs within microengineered platforms has enabled the recapitulation of the physiological and pathological conditions of complex tissues and organs. The so-called organ-on-a-chip technology, which represents a new avenue in the field of advanced in vitro models, with the potential to revolutionize current approaches to drug screening and toxicology studies. This review aims to highlight recent advances of microfluidic-based devices towards a body-on-a-chip concept, exploring their technology and broad applications in the biomedical field.European Regional Development Fund-Project FNUSA-ICRC [CZ.1.05/1.1.00/02.0123]; Fundacao para a Ciencia e a Tecnologia (FCT), Portugal [UID/BIM/04773/2013]; Internal Research Grant Program, Universita Campus Bio-Medico di Romainfo:eu-repo/semantics/publishedVersio
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