124 documents found, page 1 of 13
Tailored bacterial co-cultures improve Tisochrysis lutea growth and nutrient pr...
Santos, Tamara; da Fonseca Simões, Beatriz; Rossetto, Veronica; Pereira, Hugo; Maia, Inês Beatriz; Oliveira, Marta; Esteves Lopes Navalho, João CarlosThe marine haptophyte Tisochrysis lutea is a valuable source of high-value compounds, including polyunsaturated fatty acids like docosahexaenoic acid, and pigments (e.g., fucoxanthin). However, high production costs and variability remain major challenges for its large-scale application in aquaculture, pharmaceuticals, and biotechnology industries. Therefore, strategies to enhance biomass production and quality...
Occupational exposure to wildland firefighting and its effects on systemic DNA ...
Esteves, Filipa; Madureira, Joana; Costa, Carla; Pires, Joana; Barros, Bela; Alves, Sara; Vaz, Josiana; Oliveira, Marta; Slezakova, KlaraBackground: Portugal is among the European Union countries more devastated by forest fires. Wildland firefighters are at the forefront of this battle, facing exposure to a wide range of harmful pollutants. Epidemiological studies have highlighted a potential link between occupational firefighting exposure and several diseases, including cancer. To date, very few studies have explored the biological mechanisms a...
Application of recurrent neural networks in uncertainty analysis of sheet metal...
Cruz, Daniel; Parreira, Tomás; Marques, Armando; Prates, Pedro; Oliveira, Marta; Neto, Diogo; Santos, Abel; Amaral, Rui; Barbosa, Manuel; Pereira, AndréThe quality of deep-drawn sheet metal components can be strongly influenced by different sources of uncertainty, such as variations in process conditions, deviations in tool geometry, and variations in material properties between coils. Identifying the underlying causes of forming defects remains a challenging and time-consuming task due to the complexity of the forming process. This study presents a machine le...
Seasonal biochemical variations in mediterranean halophytes and salt-tolerant p...
Oliveira, Marta; Guerreiro Pereira, Catarina Alexandra; Castañeda-Loaiza, Viana; Rodrigues, Maria João; Neng, Nuno R.; Hoste, Hervé; Hamed, Karim BenClimate change intensifies water scarcity and soil salinization, threatening agriculture and livestock systems, especially in arid Mediterranean regions. Halophytes and salt-tolerant plants offer sustainable alternatives to support ruminant health and productivity where traditional crops fail, helping mitigate climate impacts. This work evaluated seasonality effects on the biochemical properties, including prox...
Baseline data and associations between urinary biomarkers of polycyclic aromati...
Barros, Bela; Paiva, Ana Margarida; Oliveira, Marta; Alves, Sara; Esteves, Filipa; Fernandes, Adília; Vaz, Josiana; Slezakova, Klara; Costa, SolangeIntroduction: Available literature has found an association between firefighting and pathologic pathways leading to cardiorespiratory diseases, which have been linked with exposure to polycyclic aromatic hydrocarbons (PAHs). PAHs are highlighted as priority pollutants by the European Human Biomonitoring Initiative in occupational and non-occupational contexts. Methods: This cross-sectional study is the first to...
Biomonitoring of firefighters' exposure to priority pollutant metal(loid)s duri...
Paiva, Ana Margarida; Barros, Bela; Azevedo, Rui; Oliveira, Marta; Alves, Sara Elisa Brás; Esteves, Filipa; Fernandes, Adília; Vaz, Josiana A.Wildland firefighters are exposed to metal(loid)s released during wildfires through vegetation combustion, which also promotes remobilization of accumulated anthropogenic metal(loid)s. Studies biomonitoring metal(loid)s exposure promoted exclusively by wildfire suppression activities are lacking. This work aimed to characterize, for the first time, the impact of real-life wildland firefighting operations on uri...
Baseline data and associations between urinary biomarkers of polycyclic aromati...
Barros, Bela; Paiva, Ana Margarida; Oliveira, Marta; Alves, Sara Elisa Brás; Esteves, Filipa; Fernandes, Adília; Vaz, Josiana A.; Slezakova, KlaraAvailable literature has found an association between firefighting and pathologic pathways leading to cardiorespiratory diseases, which have been linked with exposure to polycyclic aromatic hydrocarbons (PAHs). PAHs are highlighted as priority pollutants by the European Human Biomonitoring Initiative in occupational and non-occupational contexts. Methods This cross-sectional study is the first to simultaneously...
Biomonitoring of polycyclic aromatic hydrocarbons exposure and short-time healt...
Paiva, Ana Margarida; Barros, Bela; Oliveira, Marta; Alves, Sara Elisa Brás; Esteves, Filipa; Fernandes, Adília; Vaz, Josiana A.; Slezakova, KlaraHuman biomonitoring data retrieved from real -life wildland firefighting in Europe and, also, worldwide are scarce. Thus, in this study, 176 Portuguese firefighters were biomonitored pre- and post- unsimulated wildfire combating (average:12-13 h; maximum: 55 h) to evaluate the impact on the levels of urinary polycyclic aromatic hydrocarbons hydroxylated metabolites (OHPAH; quantified by high-performance liquid ...
Literary tourism: authenticity and memory
Ferreira, Ana; Oliveira, MartaThe concern with the authenticity of the tourist experience and the role of literary tourism as a proposal for the interpre-tation and enjoyment of the cultural heritage of a destination are subjects increasingly debated in tourism literature. Thegoal of this article is to contribute to this debate through a literature review focused on the role that literary tourism mayplay in the development of more original ...
Influence of the sheet thickness variability on the deep drawing of a cylindric...
Pereira, André; Prates, Pedro; Parreira, Tomás; Oliveira, MartaSheet metal forming processes are widely used in industry. The quality of formed parts can be significantly affected by various sources of uncertainty inevitably associated with the forming process. The objective of this work is to quantify the influence of thickness variability on the forming process of a cylindrical cup. Using numerical simulation, the influence of the sheet thickness variance on the evolutio...