112 documents found, page 1 of 12
The evolution of the relationship between cryptocurrencies and stocks: an empir...
Costa, Luís; Vieira, Elisabete; Madaleno, MaraPurpose: This work analyzes whether cryptocurrencies significantly influence Euronext stock returns.Design/methodology/approach: To this end, this quantitative research analyzes companies from 4 Euronext financial markets between 2017 and 2022 using the panel data methodology. The Generalized Method of Moments (GMM) methodology was also used to make the analysis more robust.Findings: This study concluded that B...
Micro-aeration as a pre-treatment to decrease LCFA toxicity in anaerobic biorea...
Duarte, Maria Salomé Lira; Costa, Luís; Magalhães, Carla Isabel Pereira; Pereira, M. A.; Stams, Alfons. J. M; Alves, M. M.; Cavaleiro, Ana Júlia VianaIntroduction: Micro-aeration in anaerobic digestion (AD) has shown process improvement, namely in the degradation of long-chain fatty acid (LCFA). Under micro-aeration, oleate, a toxic LCFA, can be faster converted to methane [1,2]. This is related to the presence of facultative anaerobic bacteria (FAB) which seem to be linked to oleate-to-palmitate conversion, although their role in this transformation is not ...
Unravelling the potential of seven microalgae species: nutritional, antioxidant...
Martins, Valter F. R.; Lopes, Ana I.; Gomes, Diana; Parreira, Celina; Badenes, Sara M.; Costa, Luís; Pintado, Manuela; Morais, Alcina M. M. B.Featured Application: The present study highlights the rich biochemical profiles and bioactivities of seven microalgal species and their respective extracts, emphasizing their broad and versatile range of potential applications. These microalgae serve as promising sources of valuable biomolecules, notably proteins, especially in Limnospira sp., and lipids, with Nannochloropsis sp. being particularly rich in the...
Medical Treatment of Osteomyelitis due to Carbapenemase-Producing Klebsiella pn...
Barbosa, Renata; Garrido, Susana; Costa, Luís; Carvalho, RuiN/A; N/A
Micro-aeration for improving anaerobic treatment and biogas production from org...
Costa, Luís; Duarte, Maria Salomé Lira; Magalhães, Carla Isabel Pereira; Pereira, M. A.; Cavaleiro, Ana Júlia VianaAnaerobic digestion (AD) is a well-established method for waste/wastewater treatment and biogas production, but challenges remain in improving its performance, particularly for toxic/inhibitory organic compounds such as lipids, hydrocarbons, polyphenols, pharmaceuticals, and other pollutants. Micro-aeration, which involves the controlled introduction of small amounts of oxygen, has emerged as a promising strate...
Burden of Disease and Cost of Illness of Triple-Negative Breast Cancer in Portu...
Silva, Joana; Sousa, Gabriela; Costa, Luís; Brito, Margarida; Oliveira, Sónia; Rodrigues, Bernardo; Ferreira, João; Borges, Margarida; Miguel, LuísBackground: Triple-negative breast cancer accounts for 15% of all breast cancer cases, and it has a lower survival rate and higher incidence of early recurrence, particularly during the first 10 years after diagnosis. Objective: This study aimed to estimate the cost and burden of triple-negative breast cancer among the female population in 2019 in Portugal from a societal perspective. Methods: The prevalence of...
Impacto da avaliação externa de escolas na melhoria do processo de autoavaliaçã...
Costa, Luís; Abelha, Marta; Henriques, SusanaEm Portugal, o referencial de Avaliação Externa de Escolas remete para a articulação com os processos de Autoavaliação das Escolas. Assim, a presente investigação pretendeu analisar se a atividade de Avaliação Externa teve impacto no processo de Autoavaliação e se promoveu melhorias organizacionais e educativas num Agrupamento de Escolas. Apresentam-se dados de um estudo de caso, tendo sido realizada numa prime...
Predictive Factors for PCR and Relapse Following Neoadjuvant Dual HER2-Blockade...
Luz, Paulo; Lopes-Brás, Raquel; Pinho, Inês Soares; Patel, Vanessa; Esperança-Martins, Miguel; Gonçalves, Lisa; Gonçalves, Joana; Freitas, RitaPurpose: Neoadjuvant systemic therapy with dual HER2-blockade, trastuzumab and pertuzumab, combined with chemotherapy has become a standard approach in patients with HER2-positive (HER2+) breast cancer (BC). However, the variability in treatment outcomes, such as pathological complete response (pCR) or relapse rates, underscores the need to identify predictive factors to optimize therapeutic strategies. This st...
Burla romântica: em torno de um conceito de vitimação
Guerreiro, Ana; Costa, Luís; Carneiro, Ana Teresa; Cruz, Olga SouzaO presente artigo pretende contribuir para a compreensão das relações sociais virtuais e a sua utilização maliciosa, contextualizando a burla romântica, também conhecida por romance fraud, enquanto fenómeno criminal emergente. Ao analisar a interconexão entre os aspetos legais, sociais e os mecanismos criminosos, e a partir de um destaque particular para os processos de vitimação subjacentes a este fenómeno cri...
A política de dividendos das empresas da Euronext perante a crise de Covid-19
Ribeiro, Bruno; Costa, LuísObjetivo: Este estudo visa analisar o impacto que a pandemia de Covid-19 teve na política de dividendos das empresas cotadas na Euronext.Metodologia: A metodologia baseia-se essencialmente no modelo de dados em painel e no modelo dos mínimos quadrados para analisar o impacto que os indicadores económico-financeiros das empresas exercem na sua política de dividendos.Resultados: Este estudo demonstrou que a pande...