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Early-stage enzymatic treatments of scutched hemp fiber: impact on fiber proper...
Costa, Rita V.; Ferreira, Sílvia; Leite, Liliana; Araújo, Joana Carolina Carvalho; Ferreira, Diana P.; Bessa, João; Cunha, Fernando Eduardo MacedoAlthough hemp fibers are widely recognized for their sustainability benefits, their intrinsic stiffness and significant structural heterogeneity present processing challenges that limit their applicability in textile manufacturing, particularly in high-quality spinning systems such as flax wet spinning. To overcome these limitations, this study investigates early-stage enzymatic treatments of scutched hemp fibe...
Institutions and collective action: construction and explanation of an empirica...
Ferreira, SílviaBearing in mind the growing scientific and political interest in social enterprises, and the lack of knowledge in Portugal, we present an empirical typology. Historical and sociological institutionalist perspectives are adopted, identifying and explaining five models in relation to institutional contexts. The construction, development and retraction of the Welfare State is highlighted. The construction and the ...
Exploring pre-service primary teachers’ pedagogical content knowledge of interd...
Ferreira, Sílvia; Simões, Helena; Delgado, Catarina; Mendes, FátimaThis study examines the pedagogical content knowledge (PCK) of pre-service primary teachers enrolled in a two-year master's program in Primary Education (1st to 6th grades) with a specialization in Mathematics and Sciences. The primary objective is to investigate changes in their PCK regarding interdisciplinarity in science and mathematics following participation in a lesson study. This paper corresponds to an ...
O conhecimento pedagógico de conteúdo interdisciplinar de futuros professores d...
Rodrigues, Margarida; Ferreira, Sílvia; Maurício, Paulo; Pista Calado Mendes, Maria de FátimaOs futuros professores, no contexto da sua formação inicial, devem ser capazes de articular os conteúdos de diferentes disciplinas e de concretizar essa relação quando planificam atividades de ensino e aprendizagem. No entanto, a promoção de abordagens interdisciplinares é complexa, ocorrendo em diferentes níveis de integração curricular. Este estudo visa caracterizar o conhecimento pedagógico de conteúdo inter...
O altar de Nossa Senhora de Belém do Mosteiro dos Jerónimos de Lisboa (1734): :...
Ferreira, SílviaThe altar of the Holy Family, originally dedicated to Our Lady of Bethlehem, located on the right side of the main chapel of the Church of the Jerónimos Monastery in Lisbon, has a history that dates back to the founding of the monastery. The invocation of Our Lady of Bethlehem was central to the devotion of the people of Lisbon, and her image was graced with rich offerings, although little is known about the or...
O Palácio da Horta Seca ou do Manteigueiro
Seixas, Miguel Metelo de; Ferreira, SílviaCommissioned at the end of the 18th century by the wealthy Lisbon merchant Domingos Mendes Dias from the royal architect Manuel Caetano de Sousa, based on information provided by Cyrillo Volkmar Machado2, the construction of the palace, later known as the “Manteigueiro” or the Viscounts of Condeixa, was part of the broader effort to construct or reconstruct buildings in Lisbon following the 1755 earthquake. Thi...
Exploring the biosurfactant potential of Actinobacteria isolated from Ruta grav...
Ferreira, Sílvia; Ribeiro, Inês; Oliveira, Rui S.; Carvalho, Maria de FátimaBiosurfactants are surface-active compounds known for their emulsifying properties and numerous advantages, including low environmental toxicity, eco-friendliness, biodegradability and acceptability. These molecules are amphiphilic, containing both hydrophilic and hydrophobic ends, allowing them to interact at the aqueous-non-aqueous interface. Bacterial biosurfactants are interesting due to their various field...
Academic social entrepreneurship: a contemporary reflection from schumpeter’s e...
Pinto, Hugo; Sampaio, Fábio; Ferreira, Sílvia; Elston, Jennifer NicoleEntrepreneurship has gained significant relevance in contemporary societies due to its role in generating economic and social value, including job creation, new businesses, and technological and social innovations. Scientific interest in entrepreneurship, which dates back to the 17th century, has increased since the 1990s. This field of study has evolved to encompass not only strict business creation but also i...
Exploring actinobacterial diversity in Ruta graveolens: Phylogenetic identifica...
Ferreira, Sílvia; Ribeiro, Inês; Oliveira, Rui S.; Carvalho, M. FátimaMedicinal plants and their components have been utilized in traditional medicine for centuries and have significantly influenced the development of modern medicine. Ruta graveolens, a Rutaceae medical plant, is known for its antibacterial, anti-inflammatory and cytotoxic properties. Actinobacteria are a rich source of compounds exhibiting diverse biological activities and potential therapeutic applications. The...
Práticas inovadoras na área das ciências
Baptista, Mónica; Ferreira, Sílvia; Correia, Marisa; Contente, JoséEsta narrativa tem como objetivo apresentar exemplos de práticas inovadoras na área das ciências, a partir do caso do Agrupamento de Escolas Gardunha e Xisto e do Agrupamento de Escolas do Gavião, alinhadas quer com a investigação recente nesta área, quer com os documentos curriculares. Essas práticas tiveram em comum três princípios: a relevância da contextualização do ensino, a relevância da aprendizagem base...