Teresa Villaverde: "Precisamos das costas aquecidas lá fora para enfrentarmos Portugal"

O projecto “Principais tendências no cinema português contemporâneo” nasceu no Departamento de Cinema da ESTC, com o objectivo de desenvolver investigação especializada a partir de um núcleo formado por alunos da Licenciatura em Cinema e do Mestrado em Desenvolvimento de Projecto Cinematográfico, a que se juntaram professores-investigadores membros do CIAC e convidados. O que agora se divulga corresponde a dois anos e meio de trabalho desenvolvido pela equipa de investigação, entre Abril de 2009 e Novembro de 2011. Dada a forma que ele foi adquirindo, preferimos renomeá-lo, para efeitos de divulgação, “Novas & velhas tendências no cinema português contemporâneo”.

A realidade da ilusão: lá Fora como alegoria cinematográfica

O projecto “Principais tendências no cinema português contemporâneo” nasceu no Departamento de Cinema da ESTC, com o objectivo de desenvolver investigação especializada a partir de um núcleo formado por alunos da Licenciatura em Cinema e do Mestrado em Desenvolvimento de Projecto Cinematográfico, a que se juntaram professores-investigadores membros do CIAC e convidados. O que agora se divulga corresponde a dois anos e meio de trabalho desenvolvido pela equipa de investigação, entre Abril de 2009 e Novembro de 2011. Dada a forma que ele foi adquirindo, preferimos renomeá-lo, para efeitos de divulgação, “Novas & velhas tendências no cinema português contemporâneo”.

Construção de obras de arte de médio vão através do método construtivo de viga de lançamento (V.L.)

O presente relatório de estágio enquadra-se no âmbito do Trabalho Final de Mestrado no curso de Engenharia Civil, perfil de Estruturas, do Instituto Superior de Engenharia de Lisboa. Desta forma, foi realizado um estágio na empresa Opway – Engenharia, com a duração de 16 semanas, com integração na Direcção Técnica e de Inovação desempenhando as funções de análise e acompanhamento de obras de arte especiais de médio vão. Pretende-se demonstrar, neste relatório, a grande especificidade deste tipo de construções quer ao nível do Dimensionamento como ao nível da Construção. Ao nível do processo de Dimensionamento são apresentados dois capítulos, um relativo ao projecto de alterações de uma Viga de Lançamento e outro relativo ao projecto de execução de um viaduto construído através deste tipo de cimbres. Desta forma, o Capítulo 2 aborda os principais factores a ter em consideração num caso de adaptação de um cimbre deste tipo, utilizado anteriormente num determinado tabuleiro, para um novo tabuleiro a realizar, com características necessariamente diferentes. Por sua vez, o Capítulo 5 prende-se com uma análise e descrição de um projecto de execução de um tabuleiro de um viaduto construído por este método construtivo. No âmbito de Construção, o Capítulo 3 aborda o método de funcionamento deste tipo de cimbres desde que chega ao local da empreitada, até à sua saída. O Capítulo 4 consiste numa avaliação de soluções para a construção de um tabuleiro, onde a solução inicial consistia na construção por avanços sucessivos enquanto que a solução variante, (adoptada), consiste na construção por lançamento incremental. Neste capítulo está demonstrada a variação de quantidades de materiais entre as duas soluções e consequentemente a sua tradução em valores monetários. Os casos de estudo, que serviram como base de trabalho, ao nível do acompanhamento da construção foram, o Viaduto ferroviário de alta velocidade “O Marco”, em Santiago de Compostela e o Viaduto sobre o Rio Águeda em Ciudad Rodrigo. Ao nível do aspecto de projecto, o caso em estudo foi do Viaduto sobre a Ribeira de Zacarias (V3), integrado na subconcessão do Douro Interior, Alfândega da Fé. Este relatório resulta da análise de documentos relativos aos diferentes tipos de projecto mencionados como também da oportunidade de realização de acompanhamento da construção deste tipo de obras de arte.

Optimal design of piezolaminated structures using B-spline strip finite element models

A package of B-spline finite strip models is developed for the linear analysis of piezolaminated plates and shells. This package is associated to a global optimization technique in order to enhance the performance of these types of structures, subjected to various types of objective functions and/or constraints, with discrete and continuous design variables. The models considered are based on a higher-order displacement field and one can apply them to the static, free vibration and buckling analyses of laminated adaptive structures with arbitrary lay-ups, loading and boundary conditions. Genetic algorithms, with either binary or floating point encoding of design variables, were considered to find optimal locations of piezoelectric actuators as well as to determine the best voltages applied to them in order to obtain a desired structure shape. These models provide an overall economy of computing effort for static and vibration problems.

Essential oils of Origanum vulgare L. subsp glandulosum (Desf.) letswaart from Tunisia: chemical composition and antioxidant activity

BACKGROUND: Characterisation of the essential oils from O. glandulosum collected in three locations of Tunisia, chemical composition and the evaluation of their antioxidant activities were carried out. RESULTS: The essential oils from Origanum vulgare L. subsp. glandulosum (Desf.) letswaart collected from three localities of north Tunisia - Krib, Bargou and Nefza - were obtained in yields of 2.5, 3.0 and 4.6% (v/w), respectively. The essential oils were analysed by GC and GC/MS and assayed for their total phenolics content, by the Folin-Ciocalteu method, and antioxidant effectiveness, using the 2,2-diphenyl-1-picrylhydrazil (DPPH) radical scavenging assay. The main components of these essential oils, from Nefza, Bargou and Krib, were p-cymene (36%, 40% and 46%), thymol (32%, 39% and 18%), gamma-terpinene (24%, 12% and 16%) and carvacrol (2%, 2% and 15%), respectively). The ability to scavenge the DPPH radicals, expressed by IC50, ranged from 59 to 80 mg L-1. The total phenolic content, expressed in gallic acid equivalent (GAE) g kg(-1) dry weight, varied from 9.37 to 17.70 g kg(-1) dw. CONCLUSIONS: A correlation was identified between the total phenolic content of the essential oils and DPPH radical scavenger capacity. The occurrence of a p-cymene chemotype of O. glandulosum in the northern region of Tunisia is demonstrated.

Contributos do Theobroma cacao L. para a saúde humana

Theobroma deriva do grego e significa alimento dos deuses. De acordo com Coe e Coe, a domesticação do cacaueiro terá sido realizada na América Central pela civilização Olmeca, sendo considerada uma dádiva dos deuses. O "ouro castanho" despertou um crescente interesse entre os diferentes povos, que lhe atribuíam um variado conjunto de propriedades terapêuticas, tendo algumas delas prevalecido até à actualidade. Objectivo do estudo: relacionar os constituintes do cacau com as suas propriedades.

Écrire à l' université: jeux et enjeux didactiques

Nous présentons, dans cette communication, les resultats d'une étude menée dans le cours d'expression orale et écrite dispensé en premier année à l'Escola Superior de Educação de Lisbonne.

Assessment of saccharide fractionation by ultrafiltration and nanofiltration

This paper addresses the investigation of the fractionation of saccharide mixtures and saccharide mixtures with calcium using ultrafiltration (UF) and nanofiltration (NF). A set of cellulose acetate membranes covered a wide range of molecular weight cut-off (MWCO) ranging from 250 to 46,000 Da and the total feed concentration of saccharides mixtures varied from 1550 to 4700 ppm with the ratio of the two saccharides-solutes (glucose to raffinose) being kept constant at the value of 1.8. The evolution pattern of the saccharide concentration ratio in the UF/NF permeate streams displayed a dependence on the membrane MWCO, on the total sugar concentration and on the presence of calcium ions. For the highest total sugar content, the membranes with MWCO from 2000 to 7000 Da showed saccharide fractionation capability that was enhanced in the presence of calcium. The Steric Pore Flow Model was used to predict individual solute permeation behaviours and to assess the deviations to steric hindered transport of the solutes in multi-component saccharide solutions. (C) 2008 Elsevier B.V. All rights reserved.

Analysis of functionally graded sandwich plate structures with piezoelectric skins, using B-spline finite strip method

Functionally graded materials are composite materials wherein the composition of the constituent phases can vary in a smooth continuous way with a gradation which is function of its spatial coordinates. This characteristic proves to be an important issue as it can minimize abrupt variations of the material properties which are usually responsible for localized high values of stresses, and simultaneously providing an effective thermal barrier in specific applications. In the present work, it is studied the static and free vibration behaviour of functionally graded sandwich plate type structures, using B-spline finite strip element models based on different shear deformation theories. The effective properties of functionally graded materials are estimated according to Mori-Tanaka homogenization scheme. These sandwich structures can also consider the existence of outer skins of piezoelectric materials, thus achieving them adaptive characteristics. The performance of the models, are illustrated through a set of test cases. (C) 2012 Elsevier Ltd. All rights reserved.

Osmolality of preterm formulas suplemented with monprotein energy supplements

Background: Addition of energy supplements to preterm formulas is an optional strategy to increase the energy intake in infants requiring fluid restriction, in conditions like bronchopulmonary dysplasia. This strategy may lead to an undesirable increase in osmolality of feeds, the maximum recommended safe limit being 400 mOsm/kg. The aim of the study was to measure the changes in osmolality of several commercialized preterm formulas after addition of glucose polymers and medium-chain triglycerides. Methods: Osmolality was measured by the freezing point depression method. Six powdered formulas with concentrations of 14 g/100 ml and 16 g/100 ml, and five ready-to-feed liquid formulas were analyzed. All formulas, were supplemented with 10% (low supplementation) or 20% (high supplementation) of additional calories, respectively, in the form of glucose polymers and medium chain triglycerides, maintaining a 1:1 glucose:lipid calorie ratio. Inter-analysis and intra-analysis coefficients of variation of the measurements were always < 3.9%. Results: The mean osmolality (mOsm/kg) of the non-supplemented formulas varied between 268.5 and 315.3 mOsm/kg, increasing by 3–5% in low supplemented formulas, and by 6–10% in high supplemented formulas. None of the formulas analyzed exceeded 352.8 mOsm/kg. Conclusion: The supplementation of preterm formulas with nonprotein energy supplements with up to 20% additional calories did not exceed the maximum recommended osmolality for neonatal feedings.

Potential poultry and meat products contamination by aflatoxin B1 due to fungal presence in Portuguese poultry units

The impact of mycotoxins on human and animal health is well recognized. Aflatoxin B1 (AFB1) is by far the most prevalent and the most potent natural carcinogen and is usually the major aflatoxin produced by toxigenic fungal strains. Data available, points to an increasing frequency of poultry feed contamination by aflatoxins. Since aflatoxin residues may accumulate in body tissues, this represents a high risk to human health. Samples from commercial poultry birds have already presented detectable levels of aflatoxin in liver. A descriptive study was developed in order to assess fungal contamination by species from Aspergillus flavus complex in seven Portuguese poultry units. Air fungal contamination was studied by conventional and molecular methods. Air, litter and surfaces samples were collected. To apply molecular methods, air samples of 300L were collected using the Coriolis μ air sampler (Bertin Technologies), at 300 L/min airflow rate. For conventional methodologies, all the collected samples were incubated at 27ºC for five to seven days. Through conventional methods, Aspergillus flavus was the third fungal species (7%) most frequently found in 27 indoor air samples analysed and the most commonly isolated species (75%) in air samples containing only the Aspergillus genus...

Lá contribution des technologies a l'apprentissage du français à l'ecole primaire georgienne

Les méthodes modernes d’enseignement exigent de recréer le milieu de la langue étudiée, de faire parler les élèves dans des situations différentes. En Géorgie, l’enseignement de la langue étrangère s’effectue à partir de 6 ans, en même temps que celui de la langue maternelle. Les élèves apprennent à écrire en français après l’apprentissage de l’écriture en géorgien. A l’âge de 7-10 ans, ils connaissent déjà 3 alphabets différents : le géorgien, le latin et le cyrillique. L’objectif de cet article est de proposer une méthode qui pourra faciliter l’apprentissage du français aux non francophones grâce aux moyens audiovisuels qui sont très efficaces surtout au moment quand l’enfant ne sait ni lire, ni écrire en langue étrangère. Cependant, les moyens audiovisuels doivent être utilisés à des doses normales sans empêcher l’activité de l’élève.

Extração e caracterização de extratos de Jatropha gossypiifolia L.: avaliação da sua atividade antimicrobiana e antioxidante

Trabalho Final de Mestrado para obtenção do grau de mestre em Engenharia Química e Biológica

Para lá dos jornalistas: influencer relations, uma nova era de Media Relations

Dissertação apresentada à Escola Superior de Comunicação Social como parte dos requisitos para obtenção de grau de mestre em Gestão Estratégica das Relações Públicas.

Fungal contamination in feed production in Portugal: what to expect regarding mycotoxins contamination?

Fungi on crops produce mycotoxins in the field, during handling, and in storage. Exposure of animals and humans are usually through consumption of contaminated feedstuffs or foods. Molds can grow and mycotoxins can be produced either pre-harvest or post-harvest, during storage, transport, processing, or feeding. Worldwide, approximately 25% of crops are affected by mycotoxins annually. Because of this is possible to concluded that mycotoxins occur frequently in a variety of feedstuffs that are given to animals causing several effects: subclinical losses in performance, increases the incidence of disease and reduced reproductive performance. Aim of study: A study was developed intending to know environmental fungal contamination in a Portuguese feed production unit. Corn, wheat and soybeans were the most common cereals used in the feed production.