924 resultados para Estudos de Segurança e Estratégia
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Ace in the hole /The big Carnival (O Grande Carnaval 1951) foi o primeiro fracasso comercial da carreira de Billy Wilder. A crítica e o público da altura não se encantaram com a história sórdida protagonizada por um jornalista corrupto e imoral. O realizador austríaco tinha no currículo dois filmes premiados com Óscares, The lost weekend (Farrapo Humano 1945) e Sunset Boulevard (Crepúsculo dos Deuses 1950). Arriscou em terreno inexplorado ao invés de procurar a segurança em guiões menos complexos. A questão levanta-se: qual o motivo que levou Billy Wilder a dirigir uma obra inspirada num acontecimento mediático real (o caso Floyd Collins) e dessa forma expôr o que há de pior no jornalismo: o sensacionalismo, o excesso, a manipulação da verdade, a ausência de ética, a sede de lucro? O trabalho a que me propus tenta encontrar uma resposta através da análise do filme, à luz da vida e do cinema de Billy Wilder. Pretendo contar, nas páginas que se seguem, de que forma o cineasta adaptou à tela um caso verídico e qual a visão que deixou às gerações vindouras do jornalismo popular.
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O presente relatório reporta-se ao projeto educativo "Reciclagem de Memórias", projeto académico criado no âmbito do estágio para a obtenção do grau de mestre em Ciências da Educação e da Formação, especialização em Educação de Adultos, por via profissional.
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Ocular pathologies are among the most debilitating medical conditions affecting all segments of the population. Traditional treatment options are often ineffective, and gene therapy has the potential to become an alternative approach for the treatment of several pathologies. Methacrylate polymers have been described as highly biocompatible and are successfully used in medical applications. Due to their cationic nature, these polymers can be used to form polyplexes with DNA for its delivery. This work aims to study the potential of PDMAEMA (poly(2-(N,N’-dimethylamino)ethyl methacrylate)) as a non viral gene delivery system to the retina. The first part of this work aimed to study the potential for gene delivery of a previously synthesized PDMAEMA polymer of high molecular weight (354kDa). In the second part, we synthesized by RAFT a PDMAEMA with a lower molecular weight (103.3kDa) and similarly, evaluated its ability to act as a gene delivery vehicle. PDMAEMA/DNA polyplexes were prepared at 5, 7.5, 10, 12.5 and 20 nitrogen/phosphorous (N/P) ratio for the 354kDa PDMAEMA and at 5 and 7.5 for the 103.3kDa PDMAEMA. Dynamic light scattering and zeta potential measurements confirmed the nanosize and positive charge of polyplexes for all ratios and for both polymers. Both high and low Mw PDMAEMA were able to efficiently complex and protect DNA from DNase I degradation. Their cytotoxicity was evaluated using a non-retinal cell line (HEK293) and a retinal pigment epithelium (RPE) cell line (D407). We have found that cytotoxicity of the free polymer is concentration and time dependent, as expected, and negligible for all the concentrations of the PDMAEMA-DNA polyplexes. Furthermore, for the concentrations to be used in vivo, the 354kDa PDMAEMA showed no signs of inflammation upon injection in the intravitreal space of C57BL/6 mice. The transfection efficiency, as evaluated by fluorescence microscopy and flow cytometry, showed that the D407 retinal cells were transfected by polyplexes of both high and low Mw PDMAEMA, but with varied efficiency, which was dependent on the N/P ratio. Althogether, these results suggest that PDMAEMA is a feasible candidate for non-viral gene delivery to the retina, and this work constitutes the basis of further studies to elucidate the bottleneck in transfection and further optimization of the material.
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Although overfishing is a concern for many fish stocks, it was for a long time only associated with commercial fishing exploitation, with less or no attention being given to the recreational fisheries. Recent research has shown however that the impact of recreational fishing on particular species can be considerable, and that the recreational harvest needs to be taken into account if fisheries are to be accurately assessed and effectively managed. In Portugal, the first recreational fishing regulations were only recently implemented. However, mirroring other European countries, regulations lacked scientific support, and specific knowledge of the activity was limited to a few studies with limited coverage. This thesis aimed to characterize the biological and socioeconomic aspects of the recreational shore angling activity in southern Portugal, to investigate whether the regulations in place were adequate and effective, and to provide recommendations for improved management and conservation of the inshore fisheries resources. A combined aerial-roving survey was conducted to gather data on fishing effort, catch, fishing trips and socioeconomic aspects (including anglers’ perceptions of regulations) of the recreational angling activity. The analysis of anglers’ catches suggested that compliance with daily bag limits was high, with less than 0.5% of creels exceeding the 10 kg angler-1 day-1 bag limit. Overall, 11.5% of the retained fishes were undersized, but non-compliance with minimum size limits was found to be high for some species (e.g. seabass, 73% undersized). In terms of the impact of recreational shore angling, the total estimated catches corresponded to less than 1% of the commercial landings for the same period (shared species). However, shore angling catches for white sea bream (Diplodus sargus) were found to be considerable, corresponding to 65% of the commercial landings (39.4% of total catch). In terms of anglers’ perceptions about the recreational fishing regulations in Portugal, the present study has shown that the majority of anglers accepted the existence of some kind of SRF regulations, but in general there was a partial or total disagreement with the recreational fishing restrictions recently put in place. Most anglers perceived themselves as not being involved in the decision-making process and claimed that some restrictions lacked a meaningful rationale (e.g. prohibition of fishing from piers/jetties). Fishers’ awareness with regard to specific aspects of the restrictions (such as the rationale for minimum size limits) was found to be very limited. During the same period, catches from sport fishing competitions were examined to test for differences with the recreational activity in terms of catches, and evaluate long term trends in catch and mean size of fish. Catches of the sport fishing competitions were found to be different from those observed for recreational fishing, being dominated by different species (e.g. garfish, mullets), and suggesting different fishing strategies of the the two types of anglers. High percentages of undersized fish were observed to be captured (and retained) during the competitions (in particular seabass, with 100% undersized), probably as a result of a single allowable minimum size (AMS) of 15 cm for all species in use in competitions. Lastly, catch and release fishing experiments were carried out to assess post-release mortality of three recreationally important species: two banded sea bream Diplodus vulgaris; black sea bream Spondyliosoma cantharus; and gilthead sea bream Sparus aurata. Post-release mortalities were found to be low (0-12%). The main predictor of mortality for Sparus aurata was anatomical hooking location, with 63% of the fishes that died being deeply hooked. The results support the release of fish, either from mandatory (e.g. minimum landing sizes) or voluntary practices. In summary, this thesis has demonstrated that the impact of recreational fishing for particular species is significant and needs to be taken into account for more effective management and stock assessment purposes. It has also highlighted several management issues that should be addressed in order to promote more adequate regulations in the future and prevent noncompliance issues. A periodic monitoring of the recreational fishing activity including all fishing modes (i.e. spear fishing, boat, and shore angling) would also be beneficial to ensure a timely knowledge on the global recreational fishing activity and support future management actions.
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Dissertação de mestrado, Ciências Farmacêuticas, Faculdade de Ciências e Tecnologias, Universidade do Algarve, 2015
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Dissertação de mestrado, Energias Renováveis e Gestão de Energia, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015
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Dissertação de mestrado, Ciências Farmacéuticas, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2015
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Dissertação de mestrado em Turismo e Culturas Urbanas, Escola Superior de Gestão, Hotelaria e Turismo, Universidade do do Algarve, 2016
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Dissertação de Mestrado, Finanças Empresariais, Faculdade de Economia, Universidade do Algarve, 2015
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Dissertação de Mestrado, Educação Pré-Escolar, Escola Superior de Educação e Comunicação, Universidade do Algarve, 2015
Operacionalização para Portugal: Critérios de Beers de medicamentos inapropriados nos doentes idosos
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Introdução: A terapêutica medicamentosa do doente idoso requer cuidados acrescidos tendo em conta as suas alterações fisiopatológicas e múltiplas patologias, que o tornam mais susceptível a eventos adversos. Têm sido criados diversos instrumentos para avaliação do uso de medicamentos inapropriados no idoso, sendo o mais frequentemente utilizado, os Critérios de Beers, cuja última actualização data de 2002. Objectivos: Operacionalização dos Critérios de Beers para alertar os profissionais de saúde em Portugal. Métodos: Análise dos fármacos e grupos de fármacos dos Critérios de Beers, comercializados em Portugal, identificação das substâncias pertencentes aos grupos assinalados por Beers que não foram incluídas nestes Critérios. Resultados: Ajustaram-se as dois quadros dos Critérios de Beers, com referência às substâncias comercializadas em Portugal e inclusão das substâncias pertencentes aos grupos de fármacos indicados na escala de Beers, com respectivos graus de inapropriação e efeitos que podem ocorrer com a administração dos medicamentos aos idosos. No quadro 1 de Beers haviam 34 substâncias sem Autorização de Introdução no Mercado (AIM) e quatro possuem designações diferentes. No quadro 2, por possuírem AIM e não estarem mencionadas, incluíram-se três antidepressivos tricíclicos, 12 antipsicóticos convencionais, doses máximas de cinco benzodiazepinas de curta acção, não se tendo encontrado referência a doses de duas, e 28 AINEs, sendo que dois são Coxibs. Conclusão: A operacionalização para Portugal dos Critérios de Beers permite a criação de um instrumento que auxilie o médico na escolha de medicamentos e doses a prescrever ao idoso garantindo um aumento de segurança da terapêutica. Esta operacionalização permite ainda a comparação de resultados de estudos sobre terapêutica inapropriada no doente idoso realizados em países diferentes e que apliquem os Critérios de Beers.
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Relatório da prática de ensino supervisionada, Mestrado em Ensino de Artes Visuais, Universidade de Lisboa, 2011
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Trabalho de projecto de mestrado, Ciências da Educação (Formação de Professores), Universidade de Lisboa, Instituto de Educação, 2011
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Relatório de estágio de mestrado, Tradução, Universidade de Lisboa, Faculdade de Letras, 2012
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Relatório de estágio de mestrado, Ciências da Educação (Formação de Adultos), Universidade de Lisboa, Instituto de Educação, 2013