53 documents found, page 1 of 6
ANALYSIS OF ORGANIC RESIDUES IN THE CONTEXT OF THE MIDDLE BRONZE AGE IN THE NOR...
Oliveira, Nuno; Oliveira, César; Bettencourt, Ana; Costa, CláudiaThis paper presents and discusses the results of chromatographic analyses conducted on the contents of a ceramic pot recovered from Cova da Moura, a coastal funerary context located on the western slope of the Serra de Santa Luzia in Carreço, within the municipality and district of Viana do Castelo, Northwest Portugal. The site was excavated in 1931 by Abel Viana, who uncovered a monument beneath a tumulus that...
PARA LOS VIVOS Y LOS MUERTOS. EL CONSUMO EN CONTEXTOS FUNERARIOS DE LA EDAD DEL...
Back, João; Oliveira, César; Bettencourt, Ana; Sampaio, Hugo; Vila Boas, Luciano; Gonçalves, LuísHace aproximadamente cinco décadas que la utilización de la cromatografía de gases en el análisis de residuos orgánicos (ORA) de artefactos cerámicos permitió ampliar, mucho más allá del análisis macroscópico, las inferencias sobre la función de estos materiales. Sin embargo, la aplicación de este enfoque analítico en vasos prehistóricos es, todavía, muy escasa, particularmente en lo que concierne a materiales ...
CONSUMOS EM CONTEXTOS FUNERÁRIOS DO BRONZE MÉDIO: O CASO DE ESTUDO DA COVA DA M...
Oliveira, Nuno; Oliveira, César; Bettencourt, AnaEste poster tem como objetivo principal apresentar resultados de análises cromatográficas efetuadas ao conteúdo de um vaso que foi depositado no interior de um monumento costeiro, situado na vertente oeste da Serra de Santa Luzia, em Carreço (Portugal). Este monumento, de grandes dimensões e único no noroeste português, provavelmente serviu como local funerário/simbólico para incinerações em pequenas cavidades ...
Assessing the impact of TiO2 nanomaterials on intestinal cells: New evidence fo...
Rolo, Dora; Pereira, Joana F.S.; Gonçalves, Lídia; Bettencourt, Ana; Jordan, Peter; Silva, Maria João; Matos, Paulo; Louro, HenriquetaUnderstanding the potential impact of nanomaterials (NMs) on human health requires further investigation into the organ-specific nano-bio interplay at the cellular and molecular levels. We showed increased chromosomal damage in intestinal cells exposed to some of in vitro digested Titanium dioxide (TiO2) NMs. The present study aimed to explore possible mechanisms linked to the uptake, epithelial barrier integri...
Development of a chlorhexidine delivery system based on dental reline acrylic r...
Bettencourt, Ana; Costa, Joana; Ribeiro, Isabel A. C.; Gonçalves, Lídia; Arias-Moliz, Maria Teresa; Dias, Juliana R.; Franco, Margarida; Alves, Nuno M.The high recurrence rate of common denture stomatitis after antifungal treatment is still concerning. This condition is caused by low patient compliance and incomplete local elimination of the main etiological factor — Candida albicans, often associated with other microorganisms, such as Streptococcus species. Impregnating denture materials with antimicrobials for local delivery is a strategy that can overcome ...
A New Approach to Classification and Registration of Medical Devices in Mozambique
Ribeiro, Helena; Mabunda, Lígia; Freitas, Sílvia; Sitoe, Ana Raquel; Bettencourt, AnaThe National Medicines Regulatory Authority, I.P (ANARME, I.P) of Mozambique created several mechanisms to ensure the quality, safety and performance of medical devices (MDs) with the publication of the Ministerial Dispatch of January 13th, 2017. However, one of the main shortcomings of the current regulatory system is the fact that it does not cover the entire classification and registration system, in order t...
Analysis of the In Vitro Toxicity of Nanocelluloses in Human Lung Cells as Comp...
Pinto, Fátima V.; Lourenço, Ana Filipa; Pedrosa, Jorge F. S.; Gonçalves, Lídia; Ventura, Célia; Vital, Nádia; Bettencourt, Ana; Fernandes, Susete N.Cellulose micro/nanomaterials (CMNM), comprising cellulose microfibrils (CMF), nanofibrils (CNF), and nanocrystals (CNC), are being recognized as promising bio-nanomaterials due to their natural and renewable source, attractive properties, and potential for applications with industrial and economical value. Thus, it is crucial to investigate their potential toxicity before starting their production at a larger ...
A MAMOA 5 DO LEANDRO (MAIA, NORTE DE PORTUGAL). RESULTADOS INTERDISCIPLINARES P...
Oliveira, César; Bettencourt, Ana; Gonçalves, Luís; Ribeiro, AndréThe megalithic monument known as Mamoa 5 do Leandro is located in the parishes of Nogueira and Silva Escura, in the municipality of Maia. The monument, part of a necropolis, was found partially destroyed, mainly in the chamber area, still preserving a head orthostat with remains of a painted motif composed by a red and black sun-shaped central ‘solar’ symbol between two straight vertical segments. Several publi...
Adverse Outcome Pathways Associated with the Ingestion of Titanium Dioxide Nano...
Rolo, Dora; Assunção, Ricardo; Ventura, Célia; Alvito, Paula; Gonçalves, Lídia; Martins, Carla; Bettencourt, Ana; Jordan, Peter; Vital, NádiaTitanium dioxide nanoparticles (TiO2-NPs) are widely used, and humans are exposed through food (E171), cosmetics (e.g., toothpaste), and pharmaceuticals. The oral and gastrointestinal (GIT) tract are the first contact sites, but it may be systemically distributed. However, a robust adverse outcome pathway (AOP) has not been developed upon GIT exposure to TiO2-NPs. The aim of this review was to provide an integr...
Analysis of the In Vitro Toxicity of Nanocelluloses in Human Lung Cells as Comp...
Pinto, Fátima; Lourenço, Ana Filipa; Pedrosa, Jorge F.S.; Gonçalves, Lídia; Ventura, Célia; Vital, Nádia; Bettencourt, Ana; Fernandes, Susete N.Cellulose micro/nanomaterials (CMNM), comprising cellulose microfibrils (CMF), nanofibrils (CNF), and nanocrystals (CNC), are being recognized as promising bio-nanomaterials due to their natural and renewable source, attractive properties, and potential for applications with industrial and economical value. Thus, it is crucial to investigate their potential toxicity before starting their production at a larger ...