403 documents found, page 1 of 41
Automated preprocessing of olive leaf images for cultivar classification using ...
Mendes, João; Lima, José; Rodrigues, Nuno; Pereira, Ana I.Olive cultivation is a pillar of Mediterranean agriculture, deeply rooted in both tradition and economic importance. This paper presents a novel two-phase methodology for the automated preprocessing of olive leaf images to facilitate accurate cultivar classification. Leveraging the state-of-the-art YOLO11 framework, two models (YOLO11n and YOLO11s) were employed for detection and segmentation tasks. A comprehen...
Polyuria-polydipsia syndrome: a case report
Rocha, Rute Daniela Moreno Daniela; Rocha, Rute Daniela Moreno Daniela; Rodrigues, NunoIntroduction: Polyuria-polydipsia syndrome is a rare entity characterized by excessive water intake and increased urine elimination. The associated nonspecific symptoms make it likely to be initially presented at the primary health care level, with the need for a detailed clinical history and requests for complementary diagnostic tests to characterize these complaints. Once identified, it requires multidiscipli...
Consumer preferences for olive oil in the Iberian Peninsula
Baviera-Puig, Amparo; Lopéz-Cortés, Isabel; Pereira, José Alberto; Rodrigues, NunoThis study aims to analyse consumer preferences in the iberian Peninsula by comparing two important european Union-producing countries. in order to be able to make valid cross-cultural comparisons, we used the Best-Worst Scaling (BWS) methodology. We also performed segmentation using latent cluster analysis (lca), including all consumers analysed, regardless of country of origin, to obtain three different segme...
Potential use of the ATR-FTIR spectroscopy as an almond cultivar recognition to...
Lamas, Sandra; Rodrigues, Nuno; Santamaria-Echart, Arantzazu; Palu, Igor; Manhique, Jocyla; Herrero, Baudilio; Lopéz-Cortés, IsabelThree almond cultivars (Lauranne, Marinada, and Vairo) were studied, considering morphological parameters that showed statistical cultivar-dependence but not enabled accurate cultivar recognition. Alternatively, attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) was applied to whole endocarp, kernel, and ground almonds. Both transmittance spectra and respective derivatives (3400–280...
Synthetic image generation for effective deep learning model training for ceram...
Gaspar, Fábio; Daniel Carreira; Rodrigues, Nuno; Miragaia, Rolando; Ribeiro, José; Costa, Paulo; Pereira, AntónioIn the rapidly evolving field of machine learning engineering, access to large, high-quality, and well-balanced labeled datasets is indispensable for accurate product classification. This necessity holds particular significance in sectors such as the ceramics industry, in which effective production line activities are paramount and deep learning classification mechanisms are particularly relevant for streamlini...
Carob and pomegranate extracts enhance plant defence mechanisms against olive a...
Antón-Domínguez, Begoña I.; Sánchez-Pereira, Luiza; Lamas, Sandra; Rodrigues, Nuno; Baptista, Paula; Agustí-Brisach, CarlosOlive anthracnose (OA), caused by Colletotrichum species, is one of the most economically damaging disease in olive sector. This study was focused to identify sustainable control alternatives by evaluating the effect of pomegranate and carob extracts against OA and elucidating their mode of action. In vitro assays on mycelial growth, conidial production, and germination, and appressoria formation of C. godetiae...
Seasonal olfactory response of Philaenus spumarius (Hemiptera: Aphrophoridae) t...
Rodrigues, Isabel; Benhadi-Marín, Jacinto; Rodrigues, Nuno; Baptista, Paula; Pereira, José AlbertoIn Portugal, the strength of the olive sector relies on the great genetic heritage of traditional olive cultivars. However, this genetic heritage is threatened by the causal agent of olive quick decline syndrome (OQDS), the phytopathogenic bacteria Xylella fastidiosa, reported for the first time in 2019 in the country. This vector-borne pathogen is transmitted by xylem-feeding insects such as Philaenus spumariu...
Nutritional and health claims compliance of olive oils produced from centenaria...
Bortoluzzi, Leticia; Casal, Susana; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Rodrigues, NunoThis work examined whether centenarian trees could be a source of virgin olive oil (VOO) that accomplishes nutritional and health claims regarding unsaturated fatty acids (UFA), tocopherols and phenolic compounds (tyrosol and hydroxytyrosol derivatives). A total of 159 VOOs from centenarian trees of Côa Valley-Portugal were analysed to assess their compliance with those claims. All VOOs met the criteria for ‘hi...
Contributions of physical activity and positive psychological functioning to fl...
Rodrigues, Nuno; Vieira, Luís Sérgio; Martins, Cátia; Cardoso Moreira, Catarina; Neves de Jesus, SaúlStudies highlight the importance of physical activity (PA) in relation to positive psychological functioning (PPF) among adults. Physical inactivity is strongly associated with lower levels of PPF, supporting the idea that lifestyle choices can be identified as a public health concern. There is growing evidence of the health benefits of regular PA. This study aims to analyze the contribution of PA to flow, PPF,...
Chemical Composition of Almond Varieties Collected in the Valencian Region (Spain)
Lopéz‐Cortés, Isabel; Fernandes, Luana; Baviera‐Puig, Amparo; Salazar, Domingo M.; Rodrigues, Nuno; Pereira, José Alberto; Ramalhosa, ElsaAlmonds (Prunus amygdalus Batsch) are consumed worldwide, with great economic importance in Spain. In the present work, six varieties collected in Valencia (Spain) were characterised: 'Desmayo Rojo', 'Guara', 'Desmayo Largueta' and 'Marcona' (Spanish varieties), and 'Ferraduel' and 'Ferragn & egrave;s' (French varieties). The different varieties differed significantly in nutritional composition, fatty acid prof...