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151.
Carlos Alberto Fraga Pimentel Filho Benjamin Bustos Arnaldo de Albuquerque Araújo Silvio Jamil Ferzoli Guimarães 《Multimedia Tools and Applications》2017,76(21):22019-22042
Sketch-based image retrieval (SBIR) lets one express a precise visual query with simple and widespread means. In the SBIR approaches, the challenge consists in representing the image dataset features in a structure that allows one to efficiently and effectively retrieve images in a scalable system. We put forward a sketch-based image retrieval solution where sketches and natural image contours are represented and compared, in both, the compressed-domain of wavelet and in the pixel domain. The query is efficiently performed in the wavelet domain, while effectiveness refinements are achieved using the pixel domain to verify the spatial consistency between the sketch strokes and the natural image contours. Also, we present an efficient scheme of inverted lists for sketch-based image retrieval using the compressed-domain of wavelets. Our proposal of indexing presents two main advantages, the amount of the data to compute the query is smaller than the traditional method while it presents a better effectiveness. 相似文献
152.
Dr. Silvia Fallarini Irene P. Bhela Dr. Silvio Aprile Dr. Enza Torre Alice Ranza Elena Orecchini Dr. Eleonora Panfili Dr. Maria T. Pallotta Prof. Alberto Massarotti Dr. Marta Serafini Prof. Tracey Pirali 《ChemMedChem》2021,16(22):3439-3450
Inhibitors of indoleamine 2,3-dioxygenase 1 (IDO1) are considered a promising strategy in cancer immunotherapy as they are able to boost the immune response and to work in synergy with other immunotherapeutic agents. Despite the fact that no IDO1 inhibitor has been approved so far, recent studies have shed light on the additional roles that IDO1 mediates beyond its catalytic activity, conferring new life to the field. Here we present a novel class of compounds originated from a structure-based virtual screening made on IDO1 active site. The starting hit compound is a novel chemotype based on a [1,2,4]triazolo[4,3-a]pyridine scaffold, so far underexploited among the heme binding moieties. Thanks to the rational and in silico-guided design of analogues, an improvement of the potency to sub-micromolar levels has been achieved, with excellent in vitro metabolic stability and exquisite selectivity with respect to other heme-containing enzymes. 相似文献
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Scientometrics - Books have been widely used to share information and contribute to human knowledge. However, the quantitative use of books as a method of scholarly communication is relatively... 相似文献
156.
Maite Gagneten María del Pilar Buera Silvio D. Rodríguez 《International Journal of Food Science & Technology》2021,56(6):2596-2603
Adulteration of canola oil with four potential edible oils was analysed using FT-IR and chemometric methods. The adulterants (corn, peanut, soya bean and sunflower oils) were studied in four different proportions (canola oil + adulterant oils: 90 + 10, 95 + 5, 98 + 2 and 99 + 1 in volume). Excellent classification results were obtained when multi-class approaches were performed with a maximum error of 3%, using 1630 or 16 wavenumbers as variables. In the case of one-class approaches, the selection of variables (16 wavenumbers) was necessary, improving the classification error to 5%. The differences observed using the different methods were related to the nature of each model depending on how the boundaries are set in each of them, responding either to a PCA-based or PLS-based algorithm. 相似文献
157.
Gutoski Matheus Lazzaretti André Eugênio Lopes Heitor Silvério 《Neural computing & applications》2021,33(4):1207-1220
Neural Computing and Applications - Human action recognition (HAR) is a topic widely studied in computer vision and pattern recognition. Despite the success of recent models for this issue, most of... 相似文献
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Valeria Franchini Silvio Ceccuzzi Andrea Doria Gian Piero Gallerano Emilio Giovenale Gian Luca Ravera Andrea De Amicis Stefania De Sanctis Sara Di Cristofaro Elisa Regalbuto Elisa Coluzzi Jessica Marinaccio Antonella Sgura Roberto Bei Monica Benvenuto Andrea Modesti Laura Masuelli Florigio Lista 《Journal of Infrared, Millimeter and Terahertz Waves》2018,39(9):899-911
In this paper, we present a comprehensive discussion of the results obtained after in vitro exposure of human fetal fibroblasts and human adult fibroblasts to pulsed radiation in a wide band between 100 and 150 GHz and to continuous wave radiation at 25 GHz. In order to assess potential effects of exposure, the genome integrity, cell cycle, cytological ultrastructure, and proteins expression were evaluated. 相似文献