Browsing by Issue Date, starting with "2020-05-15"
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- Borboletas Magnéticas - Pequenos Cientistas em CasaPublication . equipa CCVAlgPequenos Cientistas em Casa Acompanha as atividades que o Centro Ciência Viva do Algarve publica para poderes fazer em casa. Diverte-te em família, fazendo as nossas atividade e partilha connosco os resultado através de fotografias ou vídeo. #PequenosCientistasEmCasa #PequenosCientistasCCVAlg HOJE: Borboletas Magnéticas Já ouviste falar de "Borboletas Magnéticas"?.Despertámos a tua curiosidade? Vê o nosso video e descobre! ATENÇÃO!! Não saias de casa para adquirir nenhum destes materiais. Se não os tiveres todos, aguarda pelo nosso próximo desafio! #PequenosCientistasEmCasa #PequenosCientistasCCVAlg #ccvalg #cienciaviva #cienciavivaemcasa #ficaemcasa #borboleta #magnetica
- Projeto de requalificação da praceta Dr.Francisco de Sousa Vaz: a importância dos espaços exteriores urbanos de pequena dimensãoPublication . Soares, Helder Manuel Gonçalo; Gomes, AnaNesta dissertação, desenvolvida na modalidade de projeto, é apresentado uma proposta para um projeto de execução destinado à requalificação de um pequeno espaço exterior urbano, a Praceta Dr. Francisco de Sousa Vaz, localizada em Faro. A dissertação é composta por cinco grandes tópicos. No primeiro são definidos os objetivos e a metodologia de intervenção. O segundo capítulo é dedicado a um corpo teórico de suporte do processo de projeto. Remete para a investigação que o processo de projeto sofreu ao longo do tempo, bem como, para a sua validade enquanto método de investigação. Os capítulos 3 e 4 dão início ao processo de projeto e debruçam-se sobre a investigação de aspetos relacionados com o projeto. O capítulo 3 explora o tema dos espaços urbanos, em particular os de pequena dimensão e a forma como podem estes espaços contribuir para o ambiente urbano e para a sociedade. O capítulo 4 debruça-se sobre a análise do lugar e dos seus utilizadores. Por fim, no último capítulo é apresentada a proposta do projeto de arquitetura paisagista para a requalificação da praceta Dr. Francisco de Sousa Vaz.
- Label free profiling of biomolecular Interactions with coupled acoustic wave biosensor and heat conduction calorimetryPublication . Águas, Ana Catarina Pina; Santos, Rui; Ferreira, GuilhermeUnderstanding the thermodynamics of molecular interactions can give insights for rational drug design in modern pharmacology. Although a number of methods are available to evaluate the binding of biomolecules, only calorimetry can afford the complete thermodynamic characterization of these interactions, by being able to quantify their binding affinity, enthalpy and entropy. The recent field of biosensor technology provides the approach to meet the specificity and volume requirements that the conventional calorimetric techniques cannot afford. In this thesis we developed an acoustic wave biosensor coupled with a heat conduction calorimeter (HCC), the Microbalance/Calorimeter Flow Sensor (MCFS). The Quartz Cristal Microbalance (QCM) is combined with HCC in order to create a biosensing system able to simultaneous detect the immobilized biological compounds and the heat produced/consumed by the reaction between them. The direct measurement of heat and mass change provides thermodynamic and kinetic information fundamental to understand molecular interactions. During this dissertation, protocol strategies were developed for independent QCM and HCC measurements. The MCFS was built and evaluated through baseline assays, electrical calibration and test reactions. The system proved to be responsive and robust: baseline noises are 0.23 Hz, 30 nV and 4 mΩ, with a temperature control of 0.003 K. Electrical calibration revealed a 10 mV/W sensitivity and 3 μV detection limit of the calorimeter. In a later stage, (1) biotin-streptavidin binding; (2) glucose oxidase-glucose enzymatic reaction; (3) human serum albumin-warfarin interaction; (4) and single stranded DNA hybridization were tested to validate the experimental methodology. Although none of these reactions reveal a measurable calorimetric signal, streptavidin assays confirm the possibility of differential studies with a 4 ng/cm2 QCM sensitivity and a 3 ng precision. MCFS proved to be a potential asset for molecular interactions energetic studies, although its sensitivity needs to be improved. The current MCFS can be placed in the 4th level of technology demonstration, highlighting its potential as platform for innovative early drug discovery.
- Does consistent individual variability in pelagic fish larval behaviour affect recruitment in nursery habitats?Publication . Baptista, Vânia; Costa, Eudriano; Carere, Claudio; Morais, Pedro; Cruz, Joana; Cerveira, Inês; Castanho, Sara; Ribeiro, Laura; Pousao-Ferreira, Pedro; Leitão, Francisco; Teodosio, MariaIndividual animals across all taxa differ consistently in behaviour, i.e. they show personality traits. This inter-individual variability has significant ecological and evolutionary consequences, since it affects a range of population-level processes. Here, we focus on the selection and recruitment of nursery habitats in temperate fish larvae. The "Sense Acuity and Behavioural Hypothesis" has proposed that fish larvae could detect and follow environmental cues to actively choose suitable nursery habitats. We empirically tested this hypothesis questioning if this non-random active process occurs and if it could be linked to consistency in individual behaviours. Individual larvae of the white seabream Diplodus sargus (Linnaeus, 1758) were tested repeatedly at different ages in a two-channel choice-chamber apparatus exposing them to a flow with different stimuli, as nursery habitats (lagoon, coastal), different temperatures or salinities and recording exploratory activity and preference in the different conditions. Most larvae changed behaviour during ontogeny, but they were also significantly consistent in their behaviour, revealing strong individuality; yet, no significant preference for the presented stimuli emerged, nor it was related to individuality. Exploratory activity was higher when larvae showed unresponsive or inconclusive behaviours, meaning that the larvae tried to find a different stimulus from the one that we were offering or had random habitat selection. Individual behavioural consistency could influence the process of searching for suitable nursery habitats and, consequently, dispersion and connectivity of white seabream population. Characterizing the behaviour of temperate pelagic marine fish larvae may shed light on fish recruitment variability, help refining larval dispersion models and possibly help understanding effects of climate change on population distribution and connectivity. Significance statement A Chinese idiom says that "It is easier to change mountains and rivers than to alter one's character." What about fish? Well, fish can exhibit individuality traits that control autoecological and demecological processes. For example, shy fish have lower fitness while the rate of invasion progress is faster in populations with bolder individuals. Individuality studies rarely focused on fish larvae, except for coral fish. So, we tested if temperate fish larvae display consistent behaviour throughout ontogeny. This goal delves into the Sense Acuity And Behavioural Hypothesis which incorporated behaviour into the hypotheses deeming to explain fish recruitment variability. We found that temperate fish larvae display consistent individual behavioural differences in exploratory activity since early in ontogeny. This confirms the deterministic role of pelagic fish larvae behaviour on population connectivity processes, namely to control their dispersion and choose a nursery habitat.
- Marketing digital: guia prático de apoio à gestãoPublication . Silva, André Ponte; Guerreiro, Manuela; Pimenta, NelsonEste Relatório de Projeto desenvolve-se no âmbito da obtenção do grau de Mestre em Gestão de Marketing, pela Faculdade de Economia da Universidade do Algarve. Com o objetivo de contribuir para a introdução de gestores e empreendedores ao mundo Digital, este projeto assume-se como um contributo para a redação de um manual de marketing digital dedicado a gestores e empreendedores interessados em aproveitar as oportunidades e as ferramentas que as novas tecnologias de informação e da comunicação colocam ao dispor para potenciar o crescimento. Para melhor compreender as temáticas relacionadas com o marketing digital e o comércio online, primeiramente são abordadas as temáticas relacionadas com a história e o funcionamento da internet. Foram discutidos os temas relacionados com as estratégias de marketing digital, apresentadas as várias ferramentas, técnicas e canais utilizados para operacionalizar uma estratégia digital. É também estudado o papel das tecnologias de informação no que diz respeito ao financiamento de organizações através de crowdfunding.