Satisfação profissional dos técnicos de anatomia patológica, citológica e tanatológica dos hospitais públicos e de gestão, S.A. da Sub-Região de Saúde de Lisboa

A satisfação profissional tem vindo a ser descrita como o estado emocional positivo resultante do prazer que se tem com as experiências do trabalho, estando intrinsecamente relacionada com factores como desempenho profissional, saúde física e mental e com a auto-estima do trabalhador. Neste estudo pretende-se estudar o nível de satisfação profissional dos Técnicos de Anatomia Patológica, Citológica e Tanatológica (APCT) que desempenham funções nos hospitais públicos e de gestão S.A. da Sub-Região de Lisboa. A satisfação profissional foi classificada quantitativamente, segundo as abordagens baseadas na discrepância entre expectativas e resultados. Para tal, recorreu-se a um questionário validado que compreende itens passíveis de medir a satisfação profissional global e as suas dimensões - Remuneração, Segurança no Emprego,Condições de Trabalho & Saúde, Relações de Trabalho & Suporte Social, Status & Prestígio, Autonomia & Poder e Realização Pessoal e Profissional & Desempenho Organizacional, permitindo ainda verificar a Importância Motivacional que os técnicos inquiridos atribuem a cada uma destas. O referido instrumento de medida continha também uma questão aberta para sugestões dos técnicos, de forma a melhorar a sua satisfação profissional. O score de Satisfação Profissional Global dos inquiridos é relativamente elevado. Em relação às dimensões abordadas, os resultados revelam que os técnicos se encontram mais satisfeitos com Status & Prestígio e menos satisfeitos com Remuneração. Em relação à ordenação das dimensões segundo a Importância Motivacional, a Realização Pessoal e Profissional & Desempenho Organizacional é considerada a mais importante, sendo a mais focada nas sugestões apresentadas pelos inquiridos para a melhoria da sua satisfação, enquanto que Status & Prestígio será a menos importante. Verificam-se diferenças estatisticamente significativas entre os técnicos pertencentes ao Quadro (no geral, os menos satisfeitos) e aqueles que não pertencem, em relação à maioria das dimensões e à Satisfação Profissional Global; bem como entre os Licenciados e os Não Licenciados, que estão menos satisfeitos em relação à dimensão Status & Prestígio.

Magma flow, exsolution processes and rock metasomatism in the Great Messejana-Plasencia dyke (Iberian Peninsula)

Magma flow in dykes is still not well understood; some reported magnetic fabrics are contradictory and the potential effects of exsolution and metasomatism processes on the magnetic properties are issues open to debate. Therefore, a long dyke made of segments with different thickness, which record distinct degrees of metasomatism, the Messejana-Plasencia dyke (MPD), was studied. Oriented dolerite samples were collected along several cross-sections and characterized by means of microscopy and magnetic analyses. The results obtained show that the effects of metasomatism on rock mineralogy are important, and that the metasomatic processes can greatly influence anisotropy degree and mean susceptibility only when rocks are strongly affected by metasomatism. Petrography, scanning electron microscopy (SEM) and bulk magnetic analyses show a high-temperature oxidation-exsolution event, experienced by the very early Ti-spinels, during the early stages of magma cooling, which was mostly observed in central domains of the thick dyke segments. Exsolution reduced the grain size of the magnetic carrier (multidomain to single domain transformation), thus producing composite fabrics involving inverse fabrics. These are likely responsible for a significant number of the 'abnormal' fabrics, which make the interpretation of magma flow much more complex. By choosing to use only the 'normal' fabric for magma flow determination, we have reduced by 50 per cent the number of relevant sites. In these sites, the imbrication angle of the magnetic foliation relative to dyke wall strongly suggests flow with end-members indicating vertical-dominated flow (seven sites) and horizontal-dominated flow (three sites).

Multi-stage evolution of a sub-aerial volcanic ridge over the last 1.3 Myr: S. Jorge Island, Azores Triple Junction

New K/Ar dating and geochemical analyses have been carried out on the WNW-ESE elongated oceanic island of S. Jorge to reconstruct the volcanic evolution of a linear ridge developed close to the Azores triple junction. We show that S. Jorge sub-aerial construction encompasses the last 1.3 Myr, a time interval far much longer than previously reported. The early development of the ridge involved a sub-aerial building phase exposed in the southeast end of the island and now constrained between 1.32 +/- 0.02 and 1.21 +/- 0.02 Ma. Basic lavas from this older stage are alkaline and enriched in incompatible elements, reflecting partial melting of an enriched mantle source. At least three differentiation cycles from alkaline basalts to mugearites are documented within this stage. The successive episodes of magma rising, storage and evolution suggest an intermittent reopening of the magma feeding system, possibly due to recurrent tensional or trans-tensional tectonic events. Present data show a gap in sub-aerial volcanism before a second main ongoing building phase starting at about 750 ka. Sub-aerial construction of the S. Jorge ridge migrated progressively towards the west, but involved several overlapping volcanic episodes constrained along the main WNW-ESE structural axis of the island. Malic magmas erupted during the second phase have been also generated by partial melting of an enriched mantle source. Trace element data suggest, however, variable and lower degrees of partial melting of a shallower mantle domain, which is interpreted as an increasing control of lithospheric deformation on the genesis and extraction of primitive melts during the last 750 kyr. The multi-stage development of the S. Jorge volcanic ridge over the last 1.3 Myr has most likely been greatly influenced by regional tectonics, controlled by deformation along the diffuse boundary between the Nubian and the Eurasian plates, and the increasing effect of sea-floor spreading at the Mid-Atlantic Ridge.

Paleomagnetic study of the Great Foum Zguid dyke (southern Morocco): A positive contact test related to metasomatic processes

When a paleomagnetic pole is sought for in an igneous body, the host rocks should be subjected to a contact test to assure that the determined paleopole has the age of the intrusion. If the contact test is positive, it precludes the possibility that the measured magnetization is a later effect. Therefore, we investigated the variations of the remanent magnetization along cross-sections of rocks hosting the Foum Zguid dyke (southern Morocco) and the dyke itself. A positive contact test was obtained, but it is mainly related with Chemical/Crystalline Remanent Magnetization due to metasomatic processes in the host-rocks during magma intrusion and cooling, and not only with Thermo-Remanent Magnetization as ordinarily assumed in standard studies. Paleomagnetic data obtained within the dyke then reflect the Earth magnetic field during emplacement of this well-dated (196.9 +/- 1.8 Ma) intrusion.

Systematic and liquidity risk in sub-prime mortgage-backed assets

The mis-evaluation of risk in securitized financial products is central to understanding the global financial crisis. This paper characterizes the evolution of risk factors affecting collateralized debt obligations (CDOs) based on subprime mortgages. A key feature of subprime mortgage-backed indices is that they are distinct in their vintage of issuance. Using a latent factor framework that incorporates this vintage effect, we show the increasing importance of common factors on more senior tranches during the crisis. An innovation of the paper is that we use the unbalanced panel structure of the data to identify the vintage, credit, common and idiosyncratic effects from a state-space specification.

Comparison of deposited surface area of airborne ultrafine particles generated from two welding processes

This article describes work performed on the assessment of the levels of airborne ultrafine particles emitted in two welding processes metal-active gas (MAG) of carbon steel and friction-stir welding (FSW) of aluminium in terms of deposited area in alveolar tract of the lung using a nanoparticle surface area monitor analyser. The obtained results showed the dependence from process parameters on emitted ultrafine particles and clearly demonstrated the presence of ultrafine particles, when compared with background levels. The obtained results showed that the process that results on the lower levels of alveolar-deposited surface area is FSW, unlike MAG. Nevertheless, all the tested processes resulted in important doses of ultrafine particles that are to be deposited in the human lung of exposed workers.

Mantle source heterogeneity, magma generation and magmatic evolution at Terceira Island (Azoresarchipelago): Constraints from elemental and isotopic (Sr, Nd, Hf, and Pb) data

This work addresses the present-day (<100 ka) mantle heterogeneity in the Azores region through the study of two active volcanic systems from Terceira Island. Our study shows that mantle heterogeneities are detectable even when "coeval" volcanic systems (Santa Barbara and Fissural) erupted less than 10 km away. These volcanic systems, respectively, reflect the influence of the Terceira and D. Joao de Castro Bank end-members defined by Beier et at (2008) for the Terceira Rift Santa Barbara magmas are interpreted to be the result of mixing between a HIMU-type component, carried to the upper mantle by the Azores plume, and the regional depleted MORB magmas/source. Fissural lavas are characterized by higher Ba/Nb and Nb/U ratios and less radiogenic Pb-206/Pb-204, Nd-143/Nd-144 and Hf-176/Hf-177, requiring the small contribution of delaminated sub-continental lithospheric mantle residing in the upper mantle. Published noble gas data on lavas from both volcanic systems also indicate the presence of a relatively undegassed component, which is interpreted as inherited from a lower mantle reservoir sampled by the ascending Azores plume. As inferred from trace and major elements, melting began in the garnet stability field, while magma extraction occurred within the spinel zone. The intra-volcanic system's chemical heterogeneity is mainly explained by variable proportions of the above-mentioned local end-members and by crystal fractionation processes. (C) 2011 Elsevier By. All rights reserved.

Vasoespasmo cerebral após hemorragia sub-aracnoideia: a propósito de um caso clínico

O vasoespasmo constitui uma das principais complicações pós Hemorragia Sub-Aracnoideia, detendo um elevado impacto a nível clínico e social, nomeadamente em termos de mortalidade e morbilidade. Esta patologia, quando sintomática, é definida como uma deterioração aguda do estado neurológico, na ausência de outras possíveis causas, sejam elas estruturais, metabólicas ou infecciosas. A evolução do vasoespasmo constitui um processo dinâmico, pelo que a sua avaliação é essencial. É neste âmbito que a Ultrassonografia, através do Doppler Transcraniano, assume um papel de destaque, quer no diagnóstico e follow-up, quer na orientação da terapêutica. A realização deste caso clínico tem como principal objectivo demonstrar o elevado valor diagnóstico e consequentemente mais-valia do Doppler Transcraniano na avaliação e follow-up do vasoespasmo pós Hemorragia Sub-Aracnoideia.

Seismic imaging of the western Iberian crust using ambient noise: Boundaries and internal structure of the Iberian Massif

We present new Rayleigh-wave dispersion maps of the western Iberian Peninsula for periods between 8 and 30 s, obtained from correlations of seismic ambient noise, following the recent increase in seismic broadband network density in Portugal and Spain. Group velocities have been computed for each station pair using the empirical Green's functions generated by cross-correlating one-day-length seismic ambient-noise records. The resulting high-path density allows us to obtain lateral variations of the group velocities as a function of period in cells of 0.5 degrees x 0.5 degrees with an unprecedented resolution. As a result we were able to address some of the unknowns regarding the lithospheric structure beneath SW Iberia. The dispersion maps allow the imaging of the major structural units, namely the Iberian Massif, and the Lusitanian and Algarve Meso-Cenozoic basins. The Cadiz Gulf/Gibraltar Strait area corresponds to a strong low-velocity anomaly, which can be followed to the largest period inverted, although slightly shifted to the east at longer periods. Within the Iberian Massif, second-order perturbations in the group velocities are consistent with the transitions between tectonic units composing the massif. (C) 2013 Elsevier B.V. All rights reserved.

Natureza, princípios e fundamentos das práticas e relações profissionais-doentes no contexto do Gabinete de Sub-visão do Instituto Dr. Gama Pinto

A institucionalização do direito à saúde, na constituição de 1976, como direito social e humano não parece ter conseguido, na prática dos profissionais de saúde, abalar a relação paternalista que coloca o doente numa situação de submissão face à dominância do poder/saber médico central ou periférico que o doente, nos termos de Parsons, deve acatar humildemente como “um bom doente”. É este papel de passividade e submissão do doente que nos propomos problematizar nos meandros dos direitos humanos/direitos sociais de cidadania como campo de construção social assente em práticas norteadas por direitos e deveres que, nos termos de Foucault, submetem os cidadãos a constrangimentos inerentes às relações de poder.

Sub-micron structuring of silicon using femtosecond laser interferometry

We report the fabrication of planar sub-micron gratings in silicon with a period of 720 nm using a modified Michelson interferometer and femtosecond laser radiation. The gratings consist of alternated stripes of laser ablated and unmodified material. Ablated stripes are bordered by parallel ridges which protrude above the unmodified material. In the regions where ridges are formed, the laser radiation intensity is not sufficient to cause ablation. Nevertheless, melting and a significant temperature increase are expected, and ridges may be formed due to expansion of silicon during resolidification or silicon oxidation. These conclusions are consistent with the evolution of the stripes morphology as a function of the distance from the center of the grating. (C) 2013 Elsevier Ltd. All rights reserved.

Relatório de estágio em gabinete de engenharia na componente de climatização

Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica com especialização em Energia, Climatização e Refrigeração

Estudo sobre o efeito de contágio nos mercados financeiros de acções: aplicação aos índices de acções europeus, americanos, asiáticos e brasileiro no período de Janeiro de 1996 a Junho de 2009 e no sub-período da crise subprime

Mestrado em Contabilidade

Projecto de saneamento do sub-sistema da Ericeira: interceptor, emissários e sistemas elevatórios: fase III: emissário da Quinta das Pedras, Fonte Boa dos Nabos, interceptor do Outeirinho e desactivação da estação elevatória EE10

Relatório de Estágio para obtenção do grau de Mestre em Engenharia na Área de Especialização em Edificações

O livro na passagem de “átomos” a “bits”: as tecnologias digitais no contexto do livro electrónico

As Tecnologias de Informação e Comunicação colocam em debate o modo de pensar e olhar o livro tradicional e originam novas materialidades para o texto e novas formas, espaços e géneros de leitura. A revolução originada por Gutenberg democratizou o acesso ao livro tradicional, alterando os processos de acesso ao conhecimento. As tecnologias eletrónicas trouxeram consigo uma nova revolução, virtualizando o acesso aos textos que alteraram a paisagem da cultura clássica do livro. Recorrendo à ideia original do investigador Nicholas Negroponte, pretende-se realizar uma análise das alterações que o livro sofreu, enquanto objeto de suporte ao texto, na sua passagem para contextos digitais ou na passagem de “átomos” para “bits”.