52 documents found, page 1 of 6
Applying genomic approaches to delineate conservation strategies using the fres...
Perea, S; Mendes, Sofia L.; Sousa-Santos, C.; Ondina, P.; Amaro, R.; Castro, J.; San-Miguel, E.; Lima, C. S.; Garcia, M.; Velasquez, V.Efective conservation actions to counteract the current decline of populations and species require a deep knowledge on their genetic structure. We used Single Nucleotide Polymorphisms (SNPs) to infer the population structure of the highly threatened freshwater pearl mussel Margaritifera margaritifera in the Iberian Peninsula. A total of 130 individuals were collected from 26 locations belonging to 16 basins. We...
Detection of bladder cancer with feature fusion, transfer learning and CapsNets
Freitas, Nuno Renato Azevedo; Vieira, Pedro Miguel; Cordeiro, Agostinho; Tinoco, Catarina; Morais, Nuno; Torres, João Nuno Braga PimentelThis paper confronts two approaches to classify bladder lesions shown in white light cystoscopy images when using small datasets: the classical one, where handcrafted-based features feed pattern recognition systems and the modern deep learning-based (DL) approach. In between, there are alternative DL models that had not received wide attention from the scientific community, even though they can be more appropri...
Cyanotoxin production and phylogeny of benthic cyanobacterial strains isolated ...
Borges, H. L.F.; Branco, L. H.Z. [UNESP]; Martins, M. D. [UNESP]; Lima, C. S.; Barbosa, P. T.; Lira, G. A.S.T.; Bittencourt-Oliveira, M. C.Made available in DSpace on 2022-04-28T19:00:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2015-03-01; Most of the knowledge about cyanobacteria toxin production is traditionally associated with planktonic cyanobacterial blooms. However, some studies have been showing that benthic cyanobacteria can produce cyanotoxins. According to this, we aimed to evaluate the production of microcystins and saxitoxins ...
Documentation-driven GUI development for integration of image processing libraries
Lopes, Ana Patrícia Ribeiro; Silva, Daniel F.; Lopes, Sérgio F.; Correia, J. H.; Lima, C. S.; Silva, Carlos A.A graphical integrated development environment (IDE) for computer vision applications allows developing solutions by composing graphical widgets that represent operators of a computer vision library. A challenge in developing such IDE is the development of a graphical interface for each operator in the library, which is a slow and repetitive task. In this paper, we propose to generate a specific graphical widge...
Applying genomic approaches to delineate conservation strategies using the fres...
Perea, S.; Mendes, Sofia L.; Sousa-Santos, C.; Ondina, P.; Amaro, R.; Castro, J.; San-Miguel, E.; Lima, C. S.; Garcia, M.; Velasquez, V.Effective conservation actions to counteract the current decline of populations and species require a deep knowledge on their genetic structure. We used Single Nucleotide Polymorphisms (SNPs) to infer the population structure of the highly threatened freshwater pearl mussel Margaritifera margaritifera in the Iberian Peninsula. A total of 130 individuals were collected from 26 locations belonging to 16 basins. W...
Clinical performance of new software to automatically detect angioectasias in s...
Costa, Dalila Amélia Amorim; Vieira, Pedro Miguel; Pinto, Catarina; Arroja, Bruno; Leal, Tiago; Mendes, Sofia Silva; Gonçalves, Raquel; Lima, C. S.Background: Video capsule endoscopy (VCE) revolutionized the diagnosis and management of obscure gastrointestinal bleeding, though the rate of detection of small bowel lesions by the physician is still disappointing. Our group developed a novel algorithm (CMEMS-Uminho) to automatically detect angioectasias which display greater accuracy in VCE static frames than other methods previously published. We aimed to e...
Multi-pathology detection and lesion localization in WCE videos by using the in...
Vieira, Pedro Miguel; Freitas, Nuno Renato Azevedo; Lima, Veríssimo B.; Costa, Dalila Amélia Amorim; Rolanda, Carla; Lima, C. S.The majority of current systems for automatic diagnosis considers the detection of a unique and previously known pathology. Considering specifically the diagnosis of lesions in the small bowel using endoscopic capsule images, very few consider the possible existence of more than one pathology and when they do, they are mainly detection based systems therefore unable to localize the suspected lesions. Such syste...
Combination of color-based segmentation, Markov random fields and multilayer pe...
Vieira, Pedro Miguel; Freitas, Nuno Renato; Rolanda, Carla; Lima, C. S.Angioectasias are lesions characterized by specific features, related to their color and shape. Since the high prevalence of angioectasias in the small bowel, it is of great importance the development of a method to correctly localize these lesions within the intestinal tissue. Since the differences found in the color of the lesions, when compared with other lesions and the normal tissue, it was developed a met...
Automatic detection of small bowel tumors in wireless capsule endoscopy images ...
Vieira, Pedro Miguel; Freitas, Nuno Renato Azevedo; Valente, João; Vaz, A. Ismael F.; Rolanda, Carla; Lima, C. S.Purpose Wireless Capsule Endoscopy (WCE) is a minimally invasive diagnosis tool for lesion detection in the gastrointestinal tract, reaching places where conventional endoscopy is unable to. However, the significant amount of acquired data leads to difficulties in the diagnosis by the physicians; which can be eased with computer assistance. This paper addresses a method for the automatic detection of tumors in ...
High number of species of social wasps (Hymenoptera, Vespidae, Polistinae) corr...
Gomes, B.; Lima, C. S.; Silva, M. [UNESP]; Noll, F. B. [UNESP]Made available in DSpace on 2020-12-12T01:37:36Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-03-01; A survey of social wasps (Vespidae, Polistinae), common insects of Neotropical fauna, which perform a great variety of ecosystemic services, was conducted for the first time in areas of the Amazon forest in Rondônia state. The state is part of the Western Amazon, a region harboring high biodiversity, wh...