Imagem corporal e auto-estima em rapazes pré-adolescentes

Dissertação de Mestrado apresentada ao Instituto Superior de Psicologia Aplicada para obtenção de grau de Mestre na especialidade de Psicologia Clínica.

A cultura de índio, seu menino, vem de longe aqui : formação histórica e territorialização dos Tremembé/CE

This dissertation is based on the ethnography of a strategic selection of three Tremembé ethnic situations, which are situated in the backlands of Acaraú and Itarema, municipalities located in Ceará State (Northeast Brazil). My main aims are the following. Firstly, I reconstitute the historical and social formation of three localities, called Lagoa dos Negros, Telhas, and Queimadas, related to a particular origin myth which refers to Almofala, an extinct colonial Aldeamento in the seashore, where the Tremembé indians and other native populations were converted and gathered under missionary administration. According to the origin myth, these three localities were set up after a strong drought which happened in 1888 (the so called three eights) when a group of Tremembé families moved to the countryside and established close to the Lagoa dos Negros and, later on, they were segmented into smaller groups which started to live in other areas and places not far from the former location. Notably, I develop an anthropological approach to understand the historical formation of these three localities. Secondly, I analyze some processes of territorialization, which were emerged from the 1980s and had important consequences to these indigenous families throughout the next two decades. This historical dimension is re-appropriated and ressignified in ethnic terms. A third point of my work is the analysis of the construction of territorialities and also the cultural and symbolic dimensions which are formulated by the Tremembé Indians who live in these localities. Therefore, I investigate some cultural traditions and rituals, such as the Torém dance, but I also examine their multiple semantics, which constitute a transversal direction throughout the history understood by the Tremembé of the different social situations I researched. To sum up, there is a process of cultural actualization, which is still going on and presents itself through the ludic sphere as well as their political and religions dimensions, which are usually associated to the ritual presentation of the Torém

Autenticidade na rede : estudo da identidade digital

Vivemos um tempo de mudança de paradigmas na educação. O advento da sociedade em rede nesta Era Digital está a transformar profundamente a sociedade e a educação. De um ensino industrial e de cariz comportamentalista, assistimos hoje à emergência de um ensino pós-industrial e de índole construtivista. A distinção entre o ensino presencial e o ensino online é cada vez menor, requerendo o desenvolvimento de competências digitais por parte de professores e alunos. Torna-se necessária a construção de uma identidade digital que não é apenas uma identificação do estudante, mas é a sua marca digital enquanto cidadão.

Comunidades energéticas sustentáveis: estudo de Implementação de uma comunidade eólica no Algarve

Tese de Doutoramento, Gestão da Inovação e do Território, Faculdade de Economia, Universidade do Algarve, 2016

Biodiversidade marinha do sublitoral da Arrifana

A sustentabilidade dos recursos marinhos da costa portuguesa tem sido posta em causa de forma crescente devido a variados factores, nomeadamente pelo aumento do esforço da pesca, com consequência na redução de alguns mananciais (por ex. a sardinha ou a pescada), conduzindo a uma grande apreensão na sua gestão. Por outro lado, novos desafios têm surgido na última década, sobretudo no contexto da gestão espacial maritima (Marine Spatial Planning), com particular evidência na costa algarvia. Efectivamente, nesta zona, devido ao aumento das actividades das aquaculturas de mar aberto ou “offshores” e das armações de atum, mas também devido às disputas habituais entre as diferentes frotas, a gestão espacial tem estado cada vez mais na ordem do dia. Estes factos foram em grande medida os principais motivadores e impulsionadores para a execução do presente trabalho. O presente estudo encontra-se integrado no projecto “Mapeamento de bancos de pesca algarvios (PescaMap) do Programa Operacional Pesca 2007-2013 (Promar), co-financiado pelo Fundo Europeu das Pescas (FEP). O projecto conta com os apoios institucionais das câmaras dos oito concelhos do Barlavento algarvio (Vila do Bispo, Aljezur, Lagos, Monchique, Portimão, Lagoa, Silves e Albufeira) e da Cooperativa dos Armadores de Pesca do Barlavento CRL (BarlaPescas). O projecto teve em primeiro lugar como principal propósito, produzir mapas dos principais bancos de pesca da frota do cerco e da frota artesanal. Em segundo lugar, o grupo de investigação do CCMAR comprometeu-se a inventariar a biodiversidade marinha de duas importantes zonas subtidais da costa Algarvia, ambas localizadas no Parque Marinho do Sudoeste Alentejano e Costa Vicentina: uma na costa ocidental que incluiu as Pedras da Agulha e da Carraça e a costa norte adjacente à Praia da Arrifana (concelho de Aljezur) e outra na costa sul, entre a ponta da Piedade e a praia do Barranco (concelhos de Lagos e de Vila do Bispo).

Água e luz

Dissertação de Mestrado Integrado em Arquitetura, apresentada na Universidade de Lisboa - Faculdade de Arquitetura, para obtenção do grau de Mestre.

Combate em áreas edificadas aos baixos escalões : Capacidades e doutrina

Este trabalho de investigação aplicada estuda o Combate em Áreas Edificadas aos baixos escalões do Exército Português e do Exército Francês, Tem como principal objetivo identificar as principais diferenças entre os dois Exércitos, através da análise do Combate em Áreas Edificadas, da doutrina, da formação e treino, das capacidades, das vulnerabilidades e potencialidades de ambos neste tipo de combate. Quanto à natureza da investigação, a metodologia usada, foi a investigação aplicada, comparando os dois Exércitos, e utilizando como objetivo de investigação, o objetivo descritivo e explicativo. No que concerne à forma de abordagem, usamos o método dedutivo, descrevendo e explicando o Combate em Áreas Edificadas, as capacidades, a doutrina, a formação e treino, as vulnerabilidades e potencialidades de ambos. Quanto aos procedimentos técnicos usamos o método comparativo segundo a análise SWOT para verificarmos os pontos fortes, pontos fracos, oportunidades e ameaças das capacidades usadas pelos Exércitos. As técnicas de recolha de dados utilizadas, foram, numa primeira fase, a entrevista exploratória a um Oficial Francês com o intuito de receber informações sobre o seu Exército, para iniciarmos a análise documental e analisar os conceitos e numa segunda fase, fizemos entrevistas de confirmação, para analisarmos os meios, o armamento e as vulnerabilidades e potencialidades de ambos os Exército no Combate em Áreas Edificadas. Como principais resultados destacamos as caraterísticas do Combate em Áreas Edificas, na dimensionalidade do campo de batalha, no emprego de forças, na formação e treino, nos meios e armamento. A doutrina portuguesa apresenta como características deste combate a população, o local/terreno e as infraestruturas. A doutrina francesa apresenta estas características como conceito, onde inclui também o impacto meteorológico como característica. No que diz respeito à dimensionalidade do campo de batalha, a doutrina portuguesa define o campo de batalha como multidimensional enquanto a doutrina francesa define-o como tridimensional. Relativamente ao emprego das forças, a principal diferença é que o Exército Francês aborda o conceito armas combinadas, enquanto nós, ainda não o abordamos desta forma. Ao nível da formação e treino, verificamos que as forças operacionais do Exército Francês são sujeitas a uma formação e avaliação periódica no CENZUB, para rever e adotar novas técnicas, enquanto o Exército Português não possui este sistema. No que concerne às capacidades, verificamos que existem diferenças no pessoal e no material, principalmente nos meios, e ao nível do armamento.

Mapeamento acústico como ferramenta para predição de ruído urbano na área de influência do estádio Arena das Dunas, Natal/ RN

The Noise Pollution causes degradation in the quality of the environment and presents itself as one of the most common environmental problems in the big cities. An Urban environment present scenario and their complex acoustic study need to consider the contribution of various noise sources. Accordingly to computational models through mapping and prediction of acoustic scene become important, because they enable the realization of calculations, analyzes and reports, allowing the interpretation of satisfactory results. The study neighborhood is the neighborhood of Lagoa Nova, a central area of the city of Natal, which will undergo major changes in urban space due to urban mobility projects planned for the area around the stadium and the consequent changes of urban form and traffic. Thus, this study aims to evaluate the noise impact caused by road and morphological changes around the stadium Arena das Dunas in the neighborhood of Lagoa Nova, through on-site measurements and mapping using the computational model SoundPLAN year 2012 and the scenario evolution acoustic for the year 2017. For this analysis was the construction of the first acoustic mapping based on current diagnostic acoustic neighborhood, physical mapping, classified vehicle count and measurement of sound pressure level, and to build the prediction of noise were observed for the area study the modifications provided for traffic, urban form and mobility work. In this study, it is concluded that the sound pressure levels of the year in 2012 and 2017 extrapolate current legislation. For the prediction of noise were numerous changes in the acoustic scene, in which the works of urban mobility provided will improve traffic flow, thus reduce the sound pressure level where interventions are expected

Avaliação da ecotoxicidade de percolados em áreas de disposição de resíduos na região metropolitana de Natal/RN

Leachates are effluent produced by decomposition of solid waste, they have complex composition and can be highly toxic. Therefore such percolated liquid should be collected and treated properly to avoid environmental contamination of soil and of water bodies. The objective of this study was to evaluate the toxicity through ecotoxicological tests with Ceriodaphnia dubia (Cladocera - Crustacea) of percolated liquids generated in two different systems of municipal solid waste (MSW) disposal in the city of Natal/ RN: A Sanitary Landfill in the Metropolitan Region of Natal/ RN, and in a dump off area. Furthermore, it was evaluated the possible contamination of the underground water of the dump off area. Two monthly samples were taken at four points between the months of May/2009 and January/2010. The Point "A" corresponds to the end of the pond leachate treatment in ASRMN; The Point "B" corresponds to a containment pond at the dump. The Point "C" is an area near one of the cells of the dump off area where the leachate outcrops; The Point "D" stands for an underground water well at the area. The last point, called "E" was sampled only once and corresponds to the slurry produced by temporary accumulation of solid waste in the open area of the dump. The ecotoxicological tests, acute and chronic, followed the ABNT 13373/2005 rules, with some modifications. The samples were characterized by measuring the pH number, the dissolved oxygen (DO), the salinity, BOD5, COD, Cd, Cu, Pb, Cr, Fe, Mg, Ni, and Zn. At Point A, the average number of EC50-48h ranged between 1.0% and 2.77% (v/v), showing a high toxicity of the leachate to C.dubia in all months. To this point, positive correlations were found between the EC50- 48 with precipitation. Negative correlations were found between the EC50- 48h with salinity. At point B there was no response of the acute exposure of organisms to the test samples. At point C the EC50-48h ranged from 17.68% to 35.36% in just two months of the five ones analyzed, not correlated meaning. Point D, the EC50-48h level ranged between 12.31% and 71.27%, showed a negative correlation with, only, precipitation. Although it was observed toxicity of underground water in the Landfill Area, there was no evidence of water contamination by leachate, however, due to the toxic character of this water, additional tests should be conducted to confirm the quality of water that is used for human supply. At point E there was no acute toxicity. These results support the dangers of inappropriate disposal of MSW to water bodies due to the high toxicity of the leachate produced highlighting the necessity of places of safe confinement and a treatment system more effective to it

Diagnóstico ecotoxicológico dos efluentes lançados no complexo estuarino do Jundiaí/Potengi, Natal/RN

Untreated effluents that reach surface water affect the aquatic life and humans. This study aimed to evaluate the wastewater s toxicity (municipal, industrial and shrimp pond effluents) released in the Estuarine Complex of Jundiaí- Potengi, Natal/RN, through chronic quantitative e qualitative toxicity tests using the test organism Mysidopsis Juniae, CRUSTACEA, MYSIDACEA (Silva, 1979). For this, a new methodology for viewing chronic effects on organisms of M. juniae was used (only renewal), based on another existing methodology to another testorganism very similar to M. Juniae, the M. Bahia (daily renewal).Toxicity tests 7 days duration were used for detecting effects on the survival and fecundity in M. juniae. Lethal Concentration 50% (LC50%) was determined by the Trimmed Spearman-Karber; Inhibition Concentration 50% (IC50%) in fecundity was determined by Linear Interpolation. ANOVA (One Way) tests (p = 0.05) were used to determinate the No Observed Effect Concentration (NOEC) and Low Observed Effect Concentration (LOEC). Effluents flows were measured and the toxic load of the effluents was estimated. Multivariate analysis - Principal Component Analysis (PCA) and Correspondence Analysis (CA) - identified the physic-chemical parameters better explain the patterns of toxicity found in survival and fecundity of M. juniae. We verified the feasibility of applying the only renewal system in chronic tests with M. Juniae. Most efluentes proved toxic on the survival and fecundity of M. Juniae, except for some shrimp pond effluents. The most toxic effluent was ETE Lagoa Aerada (LC50, 6.24%; IC50, 4.82%), ETE Quintas (LC50, 5.85%), Giselda Trigueiro Hospital (LC50, 2.05%), CLAN (LC50, 2.14%) and COTEMINAS (LC50, IC50 and 38.51%, 6.94%). The greatest toxic load was originated from ETE inefficient high flow effluents, textile effluents and CLAN. The organic load was related to the toxic effects of wastewater and hospital effluents in survival of M. Juniae, as well as heavy metals, total residual chlorine and phenols. In industrial effluents was found relationship between toxicity and organic load, phenols, oils and greases and benzene. The effects on fertility were related, in turn, with chlorine and heavy metals. Toxicity tests using other organisms of different trophic levels, as well as analysis of sediment toxicity are recommended to confirm the patterns found with M. Juniae. However, the results indicate the necessity for implementation and improvement of sewage treatment systems affluent to the Potengi s estuary

Relatório de estágio no VILA VITA Parc Resort & Spa: Avaliação dos riscos psicossociais na secção da lavandaria

O presente relatório de estágio comtempla a período final do Mestrado em Gestão e Direção Hoteleira, na Escola Superior de Turismo e Tecnologia do Mar, do Instituto Politécnico de Leiria, e tem como objetivo a descrever o estágio realizado bem como a apresentação do desafio proposto, sobre a avaliação dos riscos psicossociais na seção da lavandaria, de um resort de cinco estrelas. O estágio decorreu ao longo de nove meses, com início a 1 de setembro de 2014 e fim a 31 de maio de 2015, no conceituado VILA VITA Parc Resort & Spa, localizado no concelho de Lagoa. No decorrer do presente relatório, é feito uma caraterização de todo o empreendimento e ainda é descrito a forma de como todas as atividades desenvolvidas, em nove departamentos, foram essenciais para uma melhor compreensão de todo o funcionamento de um grande empreendimento turístico e ainda, para o aprofundamento dos conhecimentos na área da gestão hoteleira, obtidos durante o percurso académico. Ao longo do estágio, foi descoberta a necessidade de se realizar um estudo acerca da avaliação dos riscos psicossociais, para entender de que forma, estes, influenciam a produtividade dos trabalhadores. Trata-se de um tema emergente e da qual mereceu toda a sua atenção, dando início a um estudo exploratório na secção da lavandaria. O presente estudo pretende explicar a importância da saúde e bem-estar dos colaboradores, durante a sua atividade profissional. Para a realização do estudo, foi utilizado o método de avaliação, F-Psico, que resulta na realização de questionários aos colaboradores e, posteriormente, o tratamento informatizado, dos dados obtidos. Foram, ainda, elaboradas entrevistas às chefias diretas, com o intuito de perceber as suas opiniões sobre o tema estudado. Após a análise e avaliação de todos os dados, obtêm-se resultados com realidades muito diferentes, entre colaboradores e chefias, e é apresentado um exemplo da estruturação de um plano de ação. É possível concluir a necessidade de expansão deste estudo em outros departamentos, de forma a melhorar a qualidade de vida dos colaboradores.

Kinetic analysis of metal uptake by dry and gel alginate particles

The kinetics of metal uptake by gel and dry calcium alginate beads was analysed using solutions of copper or lead ions. Gel beads sorbed metal ions faster than the dry ones and larger diffusivities of metal ions were calculated for gel beads: approximately 10−4 cm2/min vs. 10−6 cm2/min for dry beads. In accordance, scanning electron microscopy and nitrogen adsorption data revealed a low porosity of dry alginate particles. However, dry beads showed higher sorption capacities and a mechanical stability more suitable for large-scale use. Two sorption models were fitted to the kinetic results: the Lagergren pseudo-first order and the Ho and McKay pseudo-second order equations. The former was found to be the most adequate to model metal uptake by dry alginate beads and kinetic constants in the orders of 10−3 and 10−2 min−1 were obtained for lead solutions with concentrations up to 100 g/m3. The pseudo-first order model was also found to be valid to describe biosorbent operation with a real wastewater indicating that it can be used to design processes of metal sorption with alginate-based materials.

Evaluation of dry protonated calcium alginate beads for biosorption applications and studies of lead uptake

Alginate polysaccharide is a promising biosorbent for metal uptake. Dry protonated calcium alginate beads for biosorption applications were prepared, briefly characterized and tested for lead uptake. Several advantages of this biosorbent are reported and discussed in comparison with other alginate-based sorbents. The alginate beads contained 4.7 mmol/g of COOH groups, which suffered hydrolysis near pH 4. The Weber and Morris model, applied to kinetic results of lead uptake, showed that intraparticle diffusion was the rate-controlling step in lead sorption by dry alginate beads. Equilibrium experiments were performed and the data were fitted with different isotherm models. The Langmuir equation was the most adequate to model lead sorption. The maximum uptake capacity (qmax) was estimated as 339 mg/g and the Langmuir constant (b) as 0.84 l/mg. These values were compared with that of other sorbents found in the literature, indicating that dry protonated calcium alginate beads are among the best biosorbents for the treatment and recovery of heavy metals from aqueous streams.

Evaluation of dry protonated calcium alginate beads for biosorption applications and studies of lead uptake

Alginate polysaccharide is a promising biosorbent for metal uptake. Dry protonated calcium alginate beads for biosorption applications were prepared, briefly characterized and tested for lead uptake. Several advantages of this biosorbent are reported and discussed in comparison with other alginate-based sorbents. The alginate beads contained 4.7 mmol/g of COOH groups, which suffered hydrolysis near pH 4. The Weber and Morris model, applied to kinetic results of lead uptake, showed that intraparticle diffusion was the rate-controlling step in lead sorption by dry alginate beads. Equilibrium experiments were performed and the data were fitted with different isotherm models. The Langmuir equation was the most adequate to model lead sorption. The maximum uptake capacity (qmax) was estimated as 339 mg/g and the Langmuir constant (b) as 0.84 l/mg. These values were compared with that of other sorbents found in the literature, indicating that dry protonated calcium alginate beads are among the best biosorbents for the treatment and recovery of heavy metals from aqueous streams.

Copper ions binding in cu‐alginate gelation

Alginate polysaccharide forms viscous aqueous dispersions and has the ability to form gels in the presence of divalent cations such as calcium and copper. In this work, we have studied cooper ions binding during Cu‐alginate gelation, obtaining quantitative information about the amount and kinetics of cation binding. Our results indicate that copper binding during gelation occurs until a Langmuir‐type equilibrium is reached between bound and free ions in the gel‐contacting solution. The kinetics of metal ions binding can be modeled using Ritchie equation–derived models, allowing the prediction of ionic binding and gel formation temporal evolution. The ratio between cationic and polysaccharide quantities in the gelation system determines the kinetics of gelation and the characteristics of the gel formed. The experimental results and models applied in the work give more insights on alginate gelation and contribute to a reliable design and control of production methods for alginate gel structures.