Amido resistente em diversas fontes não convencionais de amido

Amido resistente (AR) é aquele que não é digerido no intestino delgado, conduzindo a efeitos benéficos para a saúde, tal como a fibra dietética faz. Procedeu-se à determinação do AR em farinhas e amidos extraídos de duas variedades de castanha (Castanea sativa Mill), Longal e Martainha, da bolota de azinheira (Quercus rotundifolia) e da glande do sobreiro (Quercus suber). As farinhas foram obtidas por moenda dos frutos após secagem a diferentes temperaturas, 40º C, 50º C, 60ºC e 70ºC. Posteriormente, procedeu-se ao isolamento dos amidos das farinhas, através da aplicação de dois métodos de extracção: um físico-químico e outro enzimático. Verificou-se que os teores de AR mais elevados foram os apresentados pelas farinhas dos frutos secos a 60ºC, sendo de 46,8%, 36,5%, 39,9% e 43,9%, respectivamente para as castanhas das variedades Longal e Martainha, para a bolota e para a glande. O método de extracção que apresentou valores mais elevados de AR para os amidos extraídos dos diferentes materiais foi o método físico-químico. Tudo indica que a secagem dos frutos a 60ºC e a aplicação do método de extracção do amido pelo processo físico-químico nas farinhas dos frutos secos a esta temperatura são aqueles que melhor preservam a estrutura dos amidos.Centro de Estudos em Educação, Tecnologias e Saúd

The Beauty of Impertinence in World Literature from 1740 to 1977

Samuel Richardson, Jane Austen, Leo Tolstoy, and Jorge Amado have often been accused of making their heroines too beautiful. But these heroines are also accomplished in ways that demonstrate that their personalities are important. The ambiguous character of the novels by these authors has divided critics who find it difficult to categorize them as supporters of patriarchal oppression, or supporters of female autonomy. In face of this critical impasse, my research looks deeply into character description and character behavior to determine if these authors’ female characters should be viewed as pretty objects or not. As I demonstrate, in Samuel Richardson’s Pamela or Virtue Rewarded (1740), Jane Austen’s Pride and Prejudice (1813) and Mansfield Park (1814), Leo Tolstoy’s War and Peace (1869), and Jorge Amado’s Gabriela Clove and Cinnamon (1958) and Tieta, the Goat Girl (1977), authors emphasize their heroine’s beauty in order to distract readers from their characters’ inappropriate acts. These acts are imprudent because they are considered improper for females in their society. Thus, by creating female characters who challenge social roles, these authors suggest successful ways for women to defy patriarchy without losing their power of agency

Caracterização do comportamento dinâmico de um edifício de dois pisos: estudo experimental e numérico

Os sismos são fenómenos naturais, que ao longo da história têm sido responsáveis por enormes perdas, tanto materiais como humanas. Grande parte dessas perdas, resultam dos danos provocados em construções existentes. Com o intuito de minimizar os estragos provocados pelas acções sísmicas, estudam-se várias hipóteses de reforço para assim melhorar o comportamento sísmico do património edificado. Para reforçar determinada estrutura com vista a melhorar o seu comportamento sob acções sísmicas, torna-se fundamental caracteriza-la dinamicamente para assim avaliar o seu desempenho sísmico. Uma das formas mais usuais para caracterizar o comportamento dinâmico de estruturas é a realização de ensaios de vibração, e o desenvolvimento de modelos numéricos devidamente calibrados que representem adequadamente as características dinâmicas das estruturas. É com base nos modelos numéricos que se verifica se determinada estrutura necessita ou não de reforço e, no caso de necessitar, se escolhe a melhor opção de reforço

One-pot enzymatic resolution/separation of enantiomers using green solvents

Dissertação para obtenção do Grau de Mestre em BiotecnologiaIn the context of “green” chemistry and sustainable processes, the main goal of this work is to develop a process that would circumvent the current complications of racemic sec-alcohol separation, using alternative solvents and selective enzymatic resolution. In this work the ability of enzymes to perform the resolution of sec-alcohols to obtain high added-value enantiomers is advantageously exploited in the production of pure chiral compounds. Candida rugosa lipase is capable of selectively converting one of the enantiomers of menthol into a different chemical compound with substantial different properties. Following this enzymatic catalysis, a separation method is used recurring to alternative solvents properties to separate the enantiomer that does not react obtaining a pure chiral compound. The main goals of this research are to finding both a vinyl ester and an acid anhydride capable of reacting selectively with the racemic menthol through catalyzed reaction using Candida rugosa lipase and test independently the acylating agents at various parameters that influence the conversion and enantioselectivity of the process such as temperature, enzyme concentration, parallel chemical reaction and solvent effect. Through this work we were successful in testing these two different chemical compounds obtaining high values for conversion and enantioselectivity. In the case of propionic anhydride we obtained 51% of conversion, 89% and 74% of enantiomeric excess of substrate and product, respectively, at 310.15 K in [Omim][PF6]. In the case of vinyl decanoate, we obtained 44.4% of conversion, 90.7% of enantiomeric excess of substrate, at 310.15 K in [Hmim][PF6]

How does technology influence knowledge sharing and application among team members?

Knowledge along with the human resource is the most valued asset of a company. Knowledge management has received much interested by researchers since it is a determinant key to perform efficiently. Due to society’s evolution, namely technological tools, on personal and professional routines, literature has improved in that sense and concluded that it can raise knowledge sharing facilitating the way employees work as well as the access to information, improving the performance. However, it is not known much about the interaction of this variables on team level. In this study, we explored how technology influence team performance through knowledge sharing and application considering sense making leadership, meaning, how the relationship above works if there was a promotion of discussion among team members. We tested our model in a sample of 54 teams (210 individuals). The results showed that there is a significant relationship between technology and knowledge sharing and hence team performance. Knowledge application does not have a direct implication, despite its indirectly impact on team’s performance. As a moderator, sense making leadership has a crucial role in the relationships described above in a way that can work as a substitute of technology, enhancing knowledge sharing and application when IT tools are not available. Therefore, regarding practical implications of this study, since society is continuously improving being more technological over time, it is important to organizations to keep the investment on it, never forgetting the way it is managed into teams.O conhecimento em paralelo com os recursos humanos são o maior ativo numa empresa. A gestão do conhecimento tem recebido a atenção dos investigadores, dado que poderá ser a chave para um desempenho eficiente. Tendo a tecnologia sofrido uma considerável evolução, a nível pessoal e profissional, a literatura tem acompanhado este progresso e concluiu que a partilha do conhecimento é proporcionada pela tecnologia disponibilizada, que facilitará o método de trabalho e o acesso à informação melhorando o desempenho. Contudo, ao nível da equipa, estas dinâmicas não têm sido aprofundadas. Ao longo do trabalho, o modelo explorado permite averiguar de que forma a tecnologia influencia o desempenho da equipa através da partilha e aplicação do conhecimento, tendo em conta a promoção da discussão das variadas situações na equipa. O modelo foi testado numa amostra de 54 equipas (210 trabalhadores). Os resultados revelaram uma relação significativa entre a tecnologia e a partilha do conhecimento e, consequentemente, no desempenho da equipa. A aplicação do conhecimento tem um impacto indireto no desempenho da mesma. A promoção de sense making pelo líder tem um papel fundamental nas relações acima descritas, na medida em que funcionará como substituto da tecnologia, promovendo a transferência e uso do conhecimento quando este tipo de recurso não está disponível. Cada vez mais, a tecnologia faz parte das rotinas da sociedade, pelo que, é importante que as empresas continuem a investir nesta área, nunca esquecendo de que é importante o modo como é utilizada e gerida ao nível das equipas

Loss given default : a backtesting exercise

Mestrado em Mathematical FinanceAfter January 2018, the new accounting standard IFRS 9 Financial Instruments was mandatory practice for all Financial Institutions. Introducing the new impairment model, which focus on expected credit losses (ECL) instead of incurred losses established previous in IAS 39 Measurement and Recognition. According to the new standard, the risk parameters involved in the computation of the ECL are required to be periodically revised. The Loss Given Default (LGD) is a risk input which represents the loss in case of a financial instrument defaults. Hence, the aim of the present report is to validate the risk input through a back testing exercise, considering statistical tests.info:eu-repo/semantics/publishedVersio

Quality of working life of academics and researchers in the UK: the roles of contract type, tenure and university ranking

Quality of Working Life has been defined as the part of overall quality of life that is influenced by work. We developed a mediation model where home-work interface, job and career satisfaction, control at work, and working conditions are considered to be positively related to employee commitment and to the absence of stress at work. These two variables were ultimately related to general well-being. We considered possible differences between workers with different contract types (permanent vs. temporary), as well as the roles of tenure and average position of the University in the UK rankings. Quantitative survey data from 510 academics and researchers working in 8 British Universities were analysed via a multi-group analysis with structural equation modelling (SEM). Our model presented a good fit, and a bootstrapping analysis confirmed the significance of indirect effects. Significant differences were found between permanent and temporary workers and striking results were found regarding tenure

Overtime and quality of working life in academics and non-academics: the role of perceived work-life balance

While academic jobs generally provide a good degree of flexibility, academics also tend to work extra hours which can then lead to a poorer work-life balance. In this study, we compare academic vs. non-academic staff and anticipate that academics will generally report a poorer Quality of Working Life, a broad conceptualization of the overall work experience of employees. Secondly, we investigate whether the negative relationships between being an academic and Quality of Working Life variables are made worse by working extra hours, and moderated by the perception of having a balanced work-life interface. Our sample consisted of 1474 academic and 1953 non-academic staff working for nine Higher Education Institutions (HEIs) in the United Kingdom (UK). Data were analyzed via structural equation modelling. Results showed that academics tend to report a poorer Quality of Working Life than non-academics within HEIs, and this is exacerbated by their higher reported number of extra hours worked per week. The work-life balance of employees was found to moderate the negative relationships between academics (vs. non-academics) in variables such as perceived working conditions and employee commitment. We additionally found curvilinear relationships where employees who worked up to 10 extra hours were more satisfied with their job and career and had more control at work than those who either did not work extra hours or worked for a higher number of extra hours. These results extend previous research and provide new insights on work-life balance among academics and non-academics, which in turn may be relevant for the wellbeing practices of HEIs and wider HE policy making

Soutien des proches aidants d'une personne atteinte de démence neurodégénérative vivant à domicile: outils et modèles d'interventions infirmiers en lien avec le modèle McGill : travail de Bachelor

Dans un contexte de vieillissement de la population, le nombre de personnes atteintes de démences neuro-dégénératives (DND) ne cesse d’augmenter, tout comme la demande en soins infirmiers à domicile. Les proches aidants (PA) de personnes atteintes de DND vivant à domicile sont donc une ressource importante pour le maintien à domicile de celles-ci. Il incombe au rôle de l’infirmière de promouvoir la santé auprès de ces PA et de développer leur potentiel de santé. Une revue de la littérature a été menée en interrogeant les bases de données Medline via PubMed et la Banque de données en santé publique (BDSP). Les outils d’évaluation sélectionnés (génogramme et écocarte, The Zarit Burden Interview, CAMI-CADI-CASI et ESPA) permettent d’apprécier la situation systémique du PA en identifiant ses ressources, le risque d’épuisement, ses difficultés, ses besoins et ses attentes. Ils permettent également de créer avec lui un partenariat de collaboration et de promouvoir sa santé par la détection précoce des problématiques susmentionnées. Les interventions psychoéducatives constituent un apprentissage de la santé à travers l’acquisition de connaissances, de compétences et l’amélioration de la capacité à utiliser les stratégies de coping. Elles ont un effet bénéfique sur les douleurs chroniques, le sentiment de détresse psychologique et l’auto-efficacité du PA. Celles-ci permettent également d’améliorer les interactions entre le proche et le PA ainsi que de retarder l’entrée en institution du proche en faisant appel au réseau disponible (soins de répits et hôpitaux de jour). Néanmoins, ce type de programme n’agit que modérément sur le fardeau ressenti par les PA. En lien avec le modèle de soins infirmiers McGill (Moyra Allen 1977,1981), les outils et les interventions développés dans cette revue de littérature sont essentiels à la reconnaissance du rôle des PA et à leur soutien à domicile. Des guides de bonnes pratiques destinés à l’utilisation des outils et des interventions infirmières à domicile devraient être développés

Conexões fotográficas: a construção de uma nova narrativa visual

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Design e Expressão Gráfica, Florianópolis, 2012O presente estudo se propõe fazer uma leitura sobre o papel da fotografia como nova narrativa visual na Internet, levando-se em conta a crescente participação do design nesse fluído limite espacial. A estética e a linguagem do fotojornalismo passam por uma transformação, com novas possibilidades de leitura e interatividade. A relação entre o leitor e a imagem deixa de se limitar à linearidade do papel. Novas técnicas e tecnologias desafiam os produtores de imagens, editores e designers de meios de comunicação, que se adaptam a essas transformações e constroem uma nova linguagem fotográfica. Os blogs, por exemplo, apresentam alternativas de linguagem, e a fotografia é protagonista como forma de expressão gráfica e informativa. Com a internet, práticas multidisciplinares são adotadas no jornalismo online. O design e áreas afins unem esforços na construção de conteúdo interativo. A convergência emergiu, dando um novo foco para o jornalismo, que ficou mais visual. A fusão de linguagens, como a fotografia e vídeo, já pode ser percebida na cobertura noticiosa, resultando em interativos documentários multimídia. É a informação entregue em novo formato, com o design gráfico contribuindo para deixá-la mais clara e acessível ao usuário. Ao longo desta pesquisa, além da revisão bibliográfica, foram realizadas entrevistas com especialistas, profissionais das áreas do design e fotojornalismo. Observou-se que veículos de comunicação assimilam essas mudanças e incorporam as novas técnicas aos projetos desenvolvidos.Abstract : This study proposes to assay the role that photography plays as a new visual narrative in the Internetand the increasin gparticipation of design in this fluid spatial limit. Photojournalism aesthetics and language go through a transformation, with many options for interactivity and reading. The relationship between the reader and the image is not limited by the linearity ofpaper. New techniques and technologies challenge image producers, editors and media designers, to adapt to these changes and build a new photographic language. Blogs, for example, present alternative language and photography as a form of informative and graphic expression. Online journalism requires knowledge of multidisciplinary practices.Design and other fields, in communication, are gathered to build interactive content. These multidisciplinary practices converge and refocus journalism, as it became more visual. The fusion oftheselanguages, like photographyand video, are already demonstrated in news coverage such as the interactive multimedia documentary. Information is delivered in a new format, where the graphic design contributes to making the information clear and more accessible to the user.Throughout this research, in addition to theliterature review, interviews were conducted with experts, professionals of design and photojournalism. The changes and the new techniques are assimilated and incorporated for the media on the developed projects