299 research outputs found

    A empregabilidade dos diplomados do mestrado em Ciências da Documentação e Informação

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    O presente estudo tem como objetivo aferir empregabilidade dos diplomados do Mestrado em Ciências da documentação e Informação da Faculdade letras da Universidade de lisboa entre 2007 e 2017 e surge no âmbito da realização do Mestrado em Ciências da Documentação e Informação Para a obtenção de dados para o estudo em questão foi desenvolvido um inquérito por questionário, que foi distribuído à totalidade dos alunos que se diplomaram entre 2008 e 2017. Este questionário foi desenvolvido de modo responder às questões que assenta o estudo: Qual a taxa de empregabilidade dos diplomados? Qual o perfil pessoal e académico dos diplomados? No paradigma qualitativo, efetuou-se pesquisas documentais para os conceitos de empregabilidade e campos epistemológicos associados de forma a suportarem teórica e conceptualmente o plano empírico desenvolvido. Como conclusão, 87% dos diplomados do Mestrado em Ciências da documentação e informação da Faculdade de Letras encontram-se atualmente empregados. 72% destes tem uma relação contratual definida, sendo que 84% deste valor exerce a sua profissão na área das Ciências da Documentação e Informação e que 14% encontra-se numa situação diferente de desempregado tendo ligações ao mercado de trabalho diferenciadoras como bolseiros ou prestadores de serviços.The present study aims to assess the employability of graduates from the Master of Science in Documentation and Information Sciences of the School of Arts and Humanities of the University of Lisboa between 2008 and 2017 and arises within the ambit of the achievement of the Master of Science in Documentation and Information. To obtain data for the study in question a questionnaire survey was developed, which was distributed to all the students who graduated between 2008 and 2017. This questionnaire was developed to answer the questions based on the study: What is the rate of employability of graduates? What is the personal and academic profile of graduates? In the qualitative paradigm documentary research was carried out for the concepts of employability and associated epistemological fields to theoretically and conceptually support the developed empirical plan. Study results reveal that 87% of the graduates from the Master of Science in documentation and information from the School of Arts and Humanities are currently employed. 72% of these have a defined contractual relationship, with 84% of this value exercising their profession in Documentation and Information Sciences and that 14% is in a different situation of unemployment with differentiating job market connections as scholarship holders or services providers

    GeoloGIS-BH: An Information System for Using the Built Heritage for Geological Teaching

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    There are examples of using stones of the cultural heritage for teaching purposes. Information systems have found several potential uses in the promotion and preservation of cultural heritage. In this paper is considered the conceptual framework of an information system concerning features of geological interest (FGI) in the built heritage (without any consideration in terms of its software implementation). This FGI concept is used here in a very wide sense to encompass characteristics of geological materials that can be recognized with the naked eye and analogies of geological processes in the built environment. Two perspectives are considered for information organization: occurrences of FGIs in the built heritage (more suitable for Earth Sciences teaching) and FGIs as components of built heritage elements (more suitable for humanities teaching). The main issue that arises from the ensuing discussion was found to be the findability of a given FGI, depending on its visual contrast and the characteristics of the built heritage element. It is argued that, in this way, geological concepts can contribute to the promotion and conservation of the built heritageThis work is included in the activities of the project Lab2PT - Landscapes, Heritage and Territory laboratory - AUR/04509, which has financial support of the Portuguese Fundação para a Ciência e a Tecnologia through national funds and when applicable of the FEDER co-financing, in the aim of the new partnership agreement PT2020 and COMPETE2020 - POCI 01 0145 FEDER 007528.info:eu-repo/semantics/publishedVersio

    Subsurface dynamic evaluation to identify old quarries in urban areas : Lisbon city case study

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    The urban expansion over the last century in Lisbon has created a lot of pressure in the suburbs leading to construction taking place in less favourable terrains. These areas were also occupied by an extensive mining industry, for the extraction of massive limestones for building and ornamental stone that had an important role for the reconstruction of Lisbon after the earthquake of 1755. Due to its heavily urbanized landscape in the last century, the terrain morphology is often changed by non-natural processes such as excavations and landfill deposits and nowadays the exact location where these exploitations took place is unknown leading to potential risk situations for buildings, infrastructures and the local population. The aim of this study was to perform a detailed subsurface dynamic analysis to locate the quarries and their landfill material thickness. For that, cartographic and topographic information dating from 1911, 1950, 1970, 2012 were used to create digital terrain models which allowed the terrain morphology changes to be identified and the volume of landfill materials to be obtained. This study enables the Town Hall to create constraints in land use in their Master Plan and other planning instruments to reduce cost increases and the risk of hazards.info:eu-repo/semantics/publishedVersio

    Os diplomados em Ciências da Documentação e Informação da Faculdade de Letras da Universidade de Lisboa: Empregabilidade 2008-2017

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    Objetivo: O objectivo do presente trabalho é analisar a empregabilidade dos diplomados do Mestrado em Ciências da Documentação e Informação da Universidade de Lisboa. Metodología: O presente estudo, como qualquer estudo de índole científica, assenta numa metodologia de investigação que nos permite apresentar resultados válidos e legitima o próprio trabalho. Neste sentido, o trabalho foi realizado completando as seguintes fases (Quivy & Campenhoudt, 1992): Elaboração da Pergunta de partida; Revisão da Literatura; Problematização; Instrumento de Análise; Recolha de Dados; e Análise dos Dados. É, ainda, um estudo exploratório de natureza qualitativa e quantitativa, suportado, sobretudo na revisão da literatura, pelo método de pesquisa documental (Saint-Georges, 1997:15). Resultados: Em termos absolutos, os valores da empregabilidade apresentados nos três momentos que foram inquiridos – à data de candidatura, à data de conclusão e atualmente, são de, respetivamente, 83%, 82% e 87%. Estes valores são ainda firmados pelo facto de 65% dos adjetivos utilizados sobre a formação do Mestrado ser: boa, abrangente, interessante, pertinente, atual, excelente, relevante, diversificada, prática, útil, enriquecedora, científica, eficiente, fundamental e rigorosa. Em suma, o presente estudo evidencia uma elevada empregabilidade dos diplomados em Ciências da Documentação e Informação pela Faculdade de Letras da Universidade de Lisboa, entre 2008 e 2017.info:eu-repo/semantics/draf

    A empregabilidade como fator da sustentabilidade: os diplomados em Ciências da Documentação e Informação pela Faculdade de Letras da Universidade de Lisboa

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    O objetivo do presente trabalho é analisar a empregabilidade dos diplomados do Mestrado em Ciências da Documentação e Informação da Universidade de Lisboa. O presente estudo, como qualquer estudo de índole científica, assenta numa metodologia de investigação que nos permite apresentar resultados válidos e legitima o próprio trabalho. Neste sentido, o trabalho foi realizado completando as seguintes fases (Quivy & Campenhoudt, 1992): Elaboração da Pergunta de partida; Revisão da Literatura; Problematização; Instrumento de Análise; Recolha de Dados; e Análise dos Dados. É, ainda, um estudo exploratório de natureza qualitativa e quantitativa, suportado, sobretudo na revisão da literatura, pelo método de pesquisa documental (Saint-Georges, 1997:15).Objective: The objective of this work is to analyze the employability of graduates of the Master in Documentation and Information Sciences at the University of Lisbon. Methodology: The present study, like any study of a scientific nature, is based on a research methodology that allows us to present valid results and legitimizes the work itself. In this sense, the work was carried out completing the following phases (Quivy & Campenhoudt, 1992): Elaboration of the starting question; Literature revision; Problematization; Analysis Instrument; Data collection; and Data Analysis. It is also an exploratory study of a qualitative and quantitative nature, supported, above all, in the literature review, by the documentary research method (Saint-Georges, 1997:15).info:eu-repo/semantics/publishedVersio

    The impact of woody biochar on microbial processes in conventionally and organically managed arable soils

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    Although environmental impacts of biochar are well characterized, impacts on soil quality, nutrient availability and crop productivity, still remain a challenge due to the diverse response of different soil types to different types of biochar, namely those obtained at low temperature. The impact of an alkaline woody biochar (two doses 5% and 10%) obtained at 280°C, on soil enzyme activity, soil microbial respiration rate, mineral nitrogen (N) availability and ammonia volatilization was studied in one conventionally and one organically managed soils, with and without the addition of urea or composted farmyard manure. Biochar additions had different effects on soil enzyme activity in both soils, suggesting lower decomposing microbial activity processes promoted by biochar. Both soils showed a similar decreasing trend regarding soil respiration rates for all treatments, and significant relationships were observed between the treatments with different rates of applied biochar, but not constant for the entire incubation period. Urea application increased soil mineral N concentrations, especially nitrate concentrations when biochar was applied as well. Biochar decreased ammonia volatilization from conventionally managed soil fertilized with urea, but did not have a significant effect when compost was added to the organically managed soil. Biochar altered microbial behavior in soil, and was affected by previous soil management. So, the impact of biochar produced at low temperatures on soil biological processes is similar to those obtained at high temperature, thus proving that there is no need to increase the energy expenditure to produce biochar, to obtain a good product

    Chemical composition and release in situ due to injury of the invasive coral tubastraea (Cnidaria, Scleractinia)

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    Substâncias químicas de defesa contra consumidores e competidores podem ser usadas por espécies invasoras marinhas como estratégia de colonização e perpetuação em novo ambiente. Entretanto, há poucos estudos experimentais que demonstrem as possíveis interações negativas entre corais escleractínios. Este trabalho tem como objetivo caracterizar os metabólitos secundários dos corais invasores Tubastraea tagusensis e T. coccinea; avaliar através da técnica de amostragem in situ quais são as substâncias de T. tagusensis liberadas na água do mar, com o auxílio de aparelho subaquático com colunas Sep-Paks®. Colônias dos corais invasores Tubastraea spp foram coletadas na Baía de Ilha Grande, RJ, e extraídas com MeOH. Os extratos foram submetidos à eluições com hexano, DCM e MeOH, e analisados por CG-EM. Estearato de metila e palmitato de metila foram as substâncias majoritárias das frações hexânicas e hexano: DCM, enquanto o colesterol foi a substância mais abundante das frações DCM e DCM:MeOH de Tubastraea spp. O material orgânico retido nas colunas Sep-Paks® foi identificado como hidrocarbonetos. Diferenças significativas entre controle e tratamento foram relacionadas a diferentes quantidades de 1-hexadeceno, n-hexadecano e n-eicosano. A produção de substâncias de defesas em Tubastraea spp permite especular sobre a ameaça que estes corais invasores representam para as comunidades bentônicas da Ilha Grande.Defensive chemistry may be used against consumers and competitors by invasive species as a strategy for colonization and perpetuation in a new area. There are relatively few studies of negative chemical interactions between scleratinian corals. This study characterizes the secondary metabolites in the invasive corals Tubastraea tagusensis and T. coccinea and relates these to an in situ experiment using a submersible apparatus with Sep-Paks® cartridges to trap substances released by T. tagusensis directly from the sea-water. Colonies of Tubastraea spp were collected in Ilha Grande Bay, RJ, extracted with methanol (MeOH), and the extracts washed with hexane, dichloromethane (DCM) and methanol, and analyzed by GC/MS. Methyl stearate and methyl palmitate were the major components of the hexane and hexane:MeOH fractions, while cholesterol was the most abundant in the DCM and DCM:MeOH fractions from Tubastraea spp. The organic material retained in Sep-Paks® cartridges was tentatively identified as hydrocarbons. There was a significant difference between treatments and controls for 1-hexadecene, n-hexadecane and n-eicosane contents. The production of defensive substances by the invasive corals may be a threat to the benthic communities of the region, which include endemic species

    Childhood obesity and reduction of hours of sleep: results from cross-sectional study

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    Childhood obesity is a prevalent condition in modern societies which can negatively impact people's health during life. Although there are several factors contributing to obesity, sleep duration has been pointed out as an important risk factor. This study, held in the district of Porto, Portugal, aimed to analyze the association between sleep duration and the nutritional status of school-aged children studying in Portugal. 1396 students from 35 and 3 public and private schools, respectively, were contacted, of which 829 participated in this study (9.2 +/- 0.38 years old; 50.3% male; 49.7% female). Age, sex, sleep duration, height, weight and body composition were registered trough a questionnaire. According to the obtained z-score for Body Mass Index (BMI), 22.9% of the children were overweight and 15.2% were obese. The mean of sleep duration was 9.7 +/- 1.08 hours and z-score for BMI was 0.78 +/- 1.21, demonstrating a statistically significant (p<0.01) weak negative correlation (r=-0.15) between sleep duration and z-score of BMI. Results were also stratified and analyzed by sex, and the same finding was observed. Therefore, the results suggest a negative association between sleep duration and overweight/obesity in these children. Although more studies are necessary, this finding highlights the need of a global approach which includes sleep assessment and counselling when promoting an appropriate nutritional status

    A New Mutation Causing Progressive Familiar Intrahepatic Cholestasis Type 3 in Association with Autoimmune Hepatitis

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    Background: Some patients exhibit features of both autoimmune hepatitis (AIH) and primary sclerosing cholangitis (PSC). Similarly, patients with progressive familial intrahepatic cholestasis type 3 (PFIC3) may share histological features with PSC. Case report: We report the case of a 22-year-old man who, since he was 5 years of age, has presented with pruritus, an approximately ninefold elevation of aminotransferases, and γ-glutamyl transferase levels ~10 times the upper limit. Initially he was diagnosed with an overlap syndrome of small duct PSC plus AIH. However, fluctuations in liver enzymes were observed over the following years. Analysis of the ABCB4 gene indicated the diagnosis of PFIC3, revealing a mutation not previously reported. Conclusion: With this case report we aim to describe a new mutation, raise awareness of this rare pathology and highlight the importance of genetic testing of the ABCB4 gene in patients with autoimmune liver disease (mainly small duct PSC) with incomplete response to immunosuppressive treatmen

    Schistosomiasis and soil-transmitted helminthiasis preventive chemotherapy: adverse events in children from 2 to 15 years in Bengo province, Angola

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    This work was supported by the promoters of the CISA as follows: Camões, Institute of Cooperation and Language, Portugal (www.instituto-camoes.pt/en/); Calouste Gulbenkian Foundation, Portugal (https:// gulbenkian.pt/en/); Government of Bengo Province; Angolan Ministry of Health (www.minsa.gov.ao).Preventive chemotherapy campaigns with praziquantel and albendazole are being implemented in Angola, as a high priority public health intervention. However, there are no published data regarding adverse events associated with these medications. In this context, we analyzed adverse events due to co-administration of praziquantel and albendazole in endemic areas of schistosomiasis and soil-transmitted helminths in Bengo, Angola. In the context of a targeted drug administration, between December 2012 and September 2013, we conducted two surveys after co-administrating single oral doses of praziquantel and albendazole tablets to children 2 to 15 years of age. About 24 hours after each treatment, participants answered a questionnaire about adverse events. At baseline, 605 children (55.0% male; mean age: 9.7 years) were treated; 460 were interviewed and 257 (55.9%) reported at least one adverse event, 62.3% (160/257) of children being infected with Schistosoma haematobium. After six months of treatment, among 339 children surveyed, 184 (54.3%) reported adverse events, with 49.5% (91/184) of infected children. Adverse events were most common in preschool-aged children, with no significant difference between genders. The most frequent adverse events in the two surveys were abdominal pain (18.5%, 25.7%), headache (20.9%, 23.0%) and dizziness (15.7%, 19.8%). Children aged 12 to 15 years (adjusted OR = 0.40, p = 0.040) and those with mixed infection (adjusted OR = 0.04, p = 0.011) had lower odds of adverse events. After the second treatment, those with heavy infection (adjusted OR = 2.72, p = 0.018) and aged 9-11 years (adjusted OR = 2.01, p = 0.049) had significantly fewer adverse events. About 2.0% of children experienced severe adverse events. This study adds evidence that preventive chemotherapy for schistosomiasis and soil-transmitted helminths control is safe, but cases of adverse events are expected. Standardized methodologies to discriminate drug-related adverse events from the clinical manifestations of the infections are needed.info:eu-repo/semantics/publishedVersio
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