Prática de ensino supervisionado: ensinando e aprendendo

Dissertação de mest., Ensino de Matemática no 3º ciclo do Ensino Básico e no Ensino Secundário, Faculdade de Ciências e Tecnologia, Univ. do Algarve, 2012Este relatório foi elaborado no âmbito do Mestrado em Ensino de Matemática do 3.º ciclo do Ensino Básico, na Faculdade de Ciências e Tecnologias da Universidade do Algarve como parte integrante da unidade curricular de Prática de Ensino Supervisionada, do 2º ano do plano de estudos do mestrado. Esta unidade curricular inclui uma forte componente de estágio pedagógico, que decorreu, ao longo do ano letivo 2011/2012, na Escola Básica 2,3 João da Rosa, em Olhão, e na Escola Secundária Pinheiro e Rosa, em Faro, sob a orientação da Doutora Maria da Graça Marques, tendo como orientadores cooperantes, respetivamente, os professores Ana Pestana e António Caetano. A par desta componente de estágio, a Prática de Ensino Supervisionada prevê também a participação e realização de seminários que complementem a formação adquirida ao longo dos dois anos curso de mestrado. O presente trabalho visa apresentar, de forma contextualizada e globalizante, os aspetos mais significativos da prática pedagógica, bem como descrever o desempenho, as reflexões, as aprendizagens e experiências vivenciadas no decorrer desse período. O relatório encontra-se dividido em capítulos. O primeiro e segundo capítulos abordam as atividades desenvolvidas e as aulas lecionadas no decurso da prática pedagógica, referindo-se cada capítulo a uma escola. São incluídas breves caracterizações de cada uma das escolas, do meio envolvente e das turmas de onde a prática teve lugar. O terceiro e último capítulo é dedicado à descrição dos seminários realizados durante o ano letivo. Ao longo do relatório vai sendo feita uma análise crítica do trabalho desenvolvido

Análise contrastiva espanhol/português dos usos do termo complejo (complexo) em Psicanálise

The aim of the present paper is to present a contrastive analysis in Spanish and Portuguese of terminological and non-terminological uses of the lexical unit complejo (complexo) in specialized corpora in the field of Psychoanalysis. The analysis sought to identify combinations of this lexical unit with adjectives, verbs, adverbs, and other nouns, as well as their frequency, in both specialized and non-specialized texts. The contrastive analysis contributes to both translation studies and practice, and also to the teaching of language for specific purposes.Keywords: terminology, specialized text, contextual analysis.O presente artigo tem por objetivo apresentar uma análise contrastiva, no par de idiomas espanhol x português, com a finalidade de identificar os usos terminológicos e não terminológicos da unidade lexical complejo (complexo) em corpora constituídos por textos especializados da área de Psicanálise. A análise realizada também buscou identificar quais os co-ocorrentes – adjetivos, verbos, advérbios, outros substantivos – são mais frequentes nos usos especializados, bem como aqueles que aparecem com mais frequência nos usos não especializados. Tal análise contrastiva visa contribuir tanto para os estudos quanto para a prática de tradução, bem como para o ensino de língua para fins específicos.Palavras-chave: terminologia, texto especializado, análise contextual

Análise contrastiva espanhol/português dos usos do termo complejo (complexo) em Psicanálise

O presente artigo tem por objetivo apresentar uma análise contrastiva, no par de idiomas espanhol x português, com a finalidade de identificar os usos terminológicos e não terminológicos da unidade lexical complejo (complexo) em corpora constituídos por textos especializados da área de Psicanálise. A análise realizada também buscou identificar quais os co-ocorrentes – adjetivos, verbos, advérbios, outros substantivos – são mais frequentes nos usos especializados, bem como aqueles que aparecem com mais frequência nos usos não especializados. Tal análise contrastiva visa contribuir tanto para os estudos quanto para a prática de tradução, bem como para o ensino de língua para fins específicos.Palavras-chave: terminologia, texto especializado, análise contextual.</p

Evaluation of myocardial contraction fraction in transcatheter aortic valve replacement

Objective: Myocardial contraction fraction (MCF), a costless, easy-to-perform echocardiographic measure, which estimates cardiac function through the volumetric measurement of myocardial shortening, may be a useful prognostic indicator in patients undergoing transcatheter aortic valve replacement (TAVR). This study aimed to evaluate MCF in patients who underwent TAVR at a public hospital in Rio de Janeiro, Brazil. Methods: This was a retrospective cohort study. Clinical and echocardiographic data were obtained from medical records. MCF was calculated as FDV in mL/FSV in mL x100, where FDV= final diastolic volume and FSV= final systolic volume. These were derived from the dimensions of the left ventricle. The FDV was estimated as 4.5 x (final diastolic diameter of the left ventricle) and the FSV was estimated as 3.72 x (final systolic diameter of the left ventricle). Patients were followed for 66 months, and all-cause mortality was registered. Results: Overall, 78 patients were studied. Median age was 78 years. Mortality was 56.4% over 9 years, with 29% of deaths in the first year. Pre-TAVR median MCF (45.9%) was low, while mean left ventricular ejection fraction (LVEF) was normal (57.0%). In patients who survived after the procedure, MCF increased post-TAVR, but in those who died, it decreased (49.3% vs 45.1%). Conclusions: MCF may demonstrate left ventricular dysfunction unrecognized by LVEF measurement in patients undergoing TAVR, and may be a prognostic marker in this patient population

Rodent models of Parkinson's disease: beyond the motor symptomatology

Parkinson's disease (PD) is classically characterized by motor symptoms; however, non-motor symptoms (NMS) are increasingly recognized as relevant in disease-state, given the associated alterations in mood (depression and anxiety) and cognition. Here, particularly in regards to NMS, we aimed to compare the motor, emotional and cognitive behavior of three animal models of PD that trigger dopaminergic (DAergic) degeneration on both brain hemispheres: (i) the 6-hydroxydopamine (6-OHDA, 8 or 6 µg) lesion model; (ii) the paraquat (PQ) induced model, and (iii) a genetic model based on a-synuclein overexpression (a-syn). 6-OHDA and a-syn vector were injected bilaterally in the substantia nigra pars compacta (SNpc) of adult male Wistar rats; as for PQ delivery, micro-osmotic pumps were implanted in the interscapular region. Motor deficits were observed in all models, with histological analysis of tyrosine hydroxylase positive cells in the SNpc revealing a significant loss of DAergic neurons in all animal models. In addition, the a-syn animal model also presented a reduction in exploratory activity, and the 6-OHDA and PQ animals displayed a significant increase in both depressive- and anxiety-like behavior. Interestingly, cognitive impairment (working memory) was only observed in the 6-OHDA model. Overall, these PD models are suitable for mimicking the motor symptoms associated to PD, with each encompassing other relevant NMS components of the disorder that may prove beneficial for further studies in PD.We would like to acknowledge the funds attributed by the Portuguese Foundation for Science and Technology (FCT), the PhD scholarships to E L. Campos (SFRH/BD/47311/2008) and M. M. Carvalho (SFRH/BD/51061/2010) and the Post-Doctoral fellowship to A. C. Cristovao (SFRH/BPD/69643/2010), and to Fundacao Calouste de Gulbenkian-Programme to Support Cutting Edge Research in Life Sciences and ICVS for funding this work. We want to further acknowledge Joao Cerqueira and Nadine Correia Santos for their contribution to this work

Challenges of biomass utilization for bioenergy in a climate change scenario

The climate changes expected for the next decades will expose plants to increasing occurrences of combined abiotic stresses, including drought, higher temperatures, and elevated CO2 atmospheric concentrations. These abiotic stresses have significant consequences on photosynthesis and other plants’ physiological processes and can lead to tolerance mechanisms that impact metabolism dynamics and limit plant productivity. Furthermore, due to the high carbohydrate content on the cell wall, plants represent a an essential source of lignocellulosic biomass for biofuels production. Thus, it is necessary to estimate their potential as feedstock for renewable energy production in future climate conditions since the synthesis of cell wall components seems to be affected by abiotic stresses. This review provides a brief overview of plant responses and the tolerance mechanisms applied in climate change scenarios that could impact its use as lignocellulosic biomass for bioenergy purposes. Important steps of biofuel production, which might influence the effects of climate change, besides biomass pretreatments and enzymatic biochemical conversions, are also discussed. We believe that this study may improve our understanding of the plant biological adaptations to combined abiotic stress and assist in the decision-making for selecting key agronomic crops that can be efficiently adapted to climate changes and applied in bioenergy production.info:eu-repo/semantics/publishedVersio

Water security and watershed management assessed through the modelling of hydrology and ecological integrity: a study in the Galicia-Costa (NW Spain)

Water management is a crucial tool for addressing the increasing uncertainties caused by climate change, biodiversity loss and the conditions of socioeconomic limits. The multiple factors affecting water resources need to be successfully managed to achieve optimal governance and thus move towards water security. This study seeks to obtain a holistic vision of the various threats that affect the ecological integrity of the basins that form the hydrological district of Galicia-Costa, through the method of partial least squares path modelling (PLS-PM). The data is analysed overall for the hydrological years from 2009 to 2015. The independent latent variables are “Anthropogenic” (comprising the percentage of water bodies with edges alongside artificial surfaces, the percentage connected to artificial land use patches, the edge density of artificial surfaces and population density) and “Nature” (edge density of forestry land uses, edge length of land water bodies alongside forested areas and the percentage of land occupied by the largest patch of forest). The dependent latent variables are “SWP”, which represents surface water parameters (biological oxygen demand, chlorides, conductivity and dissolved iron) and “Ecological Integrity” (METI Bioindicator). The connections between latent variables are uantified through path coefficients (β). From an overall perspective, the PLS-PM results reveal that 69.0% of “SWP” is predicted by the independent variables (R2 = 0.690), “Anthropogenic” contributes by increasing SWP (β = 0.471), while “Nature” decreases the concentration of SWP (β = −0.523), which indicates the polluting parameters in the water. The variables “Anthropogenic” (β = −0.351) and “SWP” (β = −0.265) lower the quality of “Ecological Integrity”. This variable must be managed through soil conservation measures for the benefit of water security. This study has been able to identify and quantify the variables that increase contaminant concentration and decrease ecological integrity, providing a promising methodology that facilitates protection and correction measures to guarantee water safety.Xunta de Galicia | Ref. R815 131H 64502Fundação para a Ciência e a Tecnologia | Ref. UID/AGR/04033/2020Fundação para a Ciência e a Tecnologia | Ref. UIDB/QUI/00616/2020Fundação para a Ciência e a Tecnologia | Ref. UIDP/00616/2020Fundação para a Ciência e a Tecnologia | Ref. SFRH/BD/146151/201

Effect of L-glutamine and L-alanyl-L-glutamine supplementation on the response to delayed-type hypersensitivity test (DTH) in rats submitted to intense training

O treinamento intenso e o exercício exaustivo podem ocasionar imunossupressão em atletas por meio da diminuição da concentração plasmática de glutamina. O presente estudo verificou inicialmente o efeito da suplementação com L-glutamina e L-alanilL-glutamina sobre a resposta ao teste de hipersensibilidade do tipo tardio (HTT) em ratos submetidos ao treinamento intenso em natação durante seis semanas. Posteriormente, foi avaliado o efeito dessas intervenções nutricionais sobre a contagem total e porcentual de leucócitos e concentração sérica de anticorpos IgG anti-albumina de soro bovino, em animais submetidos ao teste de exaustão e recuperados durante o período de 3 horas. Não houve efeito do treinamento e da suplementação sobre a resposta ao teste de HTT. Animais suplementados apresentaram maior concentração de glutamina no plasma (PIntense training and exhaustive exercise may cause immunesupression in athletes by reducing plasma glutamine concentration. Initially, this study verified the effect of L-glutamine and L-alanyl-L-glutamine supplementation on the response to delayed-type hypersensitivity test (DTH) in rats submitted to intense swimming training for six weeks. Later on, we assessed the effect of these nutritional interventions on total and differential white blood cell counts and on concentration of anti-bovine serum albumin IgG antibodies, in animals submitted to exhaustion test and a three-hour recovery period. There was no effect of training and supplementation on the response to DTH. Supplemented animals presented greatest plasma glutamine concentration (