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  • Evaluation of Chlorella vulgaris application as a biostimulant for lettuce growth in soilless culture
    Publication . Vieira, João; Saque, Moisés; Gama, Florinda; Viana, Catarina; Guerreiro David Coelho, Luísa Isabel; Rodrigues, Maria Helena; Varela, João; Pereira, Hugo; Palencia, Pedro; Reis, Mário; Pestana, Maribela; Correia, Pedro José
    This study evaluated the effect of Chlorella vulgaris application on the growth of soilless-grown lettuce (Lactuca sativa cv. 'Oreja de Mulo') cultivated outdoors. Microalgae suspensions were applied weekly at concentrations of 0.5, 2.0, and 5.0 g L(-)1. Plants grown without the application of microalgae were used as the control. Leaf chlorophyll concentration was registered at the beginning and at the end of the experiment, and biomass parameters were assessed at harvest. Compared with control, the highest concentration of C. vulgaris (CV5) exhibited the maximum increase in leaf area (67.4%), root fresh weight (138.7%), root volume (92.1%) and root dry weight (150.0%). This concentration further promoted higher accumulation of nitrogen (44.9%), phosphorus (96.4%), potassium (59.5%), and iron (Fe) (43.8%) in aerial parts of the lettuce plants These findings demonstrate the potential of C. vulgaris suspensions as effective biostimulants for improving growth, nutrient uptake, and biomass accumulation in hydroponic lettuce production, supporting more sustainable agricultural practices.
    2025-09-19Artigo científico Acesso restrito Ver mais
  • Exploring consumer experiences in Wine Tourism through sentiment analysis: An assessment of Tripadvisor reviews about Wineries in France, Portugal, and Italy
    Publication . Siegl, Laura; Baptista, Ema; Ruvo, Daniele; Ramos, Celia
    This study examines TripAdvisor reviews from three wineries in Europe to analyze customer perceptions and preferences in wine tourism. The investigation aims to understand the impact of online reviews on winery reputations and customer satisfaction in the context of wine tourism experiences. The study utilizes an advanced data analytics tool, namely Power BI, to analyze the development and demographics of the reviews and Orange Data Mining to conduct sentiment analysis and text mining. By examining reviews from wineries in France, Portugal, and Italy, this work identifies key themes, sentiments, and preferences expressed by customers, providing actionable insights for wineries to enhance visitor experiences and strategic decision-making in the wine tourism industry using an artificial intelligence approach.
    2025-09-19Capítulo de livro Acesso restrito Ver mais