Shape Features
Mostrando 1-12 de 274 artigos, teses e dissertações.
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1. Gold Nanorods Capped with Different Ammonium Bromide Salts on the Catalytic Chemical Reduction of p-Nitrophenol
It is known that the reactivity of the nanocatalytic systems is related to the particle size and shape and also to the features of the capping agents on the nanostructures. In this study, gold nanorods (AuNRs) were synthesized by the seed-mediated method using different tetra-alkylammonium bromide salts as capping agents, that are, cetyltrimethylammonium (CT
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. Discrimination of pores and cracks in iron ore pellets using deep learning neural networks
Abstract The discrimination between pores and cracks is an important step in the microstructural analysis of iron ore pellets. While the porosity is fundamental during the reduction process in blast furnaces, cracks are strongly detrimental to the mechanical strength. The usual image processing tools cannot automatically discriminate between these two types
REM, Int. Eng. J.. Publicado em: 2020-06
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3. Caracteres importantes na identificação de espécies de Ludwigia (Onagraceae) ocorrentes no Recôncavo da Bahia, Brasil
Resumo Na flora aquática do Brasil, o gênero Ludwigia apresenta ca. 48 espécies. A maioria das espécies de Ludwigia é anfíbia, apresentando uma grande plasticidade fenotípica, o que torna sua identificação complexa. O objetivo deste trabalho foi realizar um levantamento taxonômico e analisar caracteres diagnósticos na delimitação das espécies d
Rodriguésia. Publicado em: 20/12/2019
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4. Relationships between corneal biomechanics and the structural and functional parameters of glaucoma damage
RESUMO Objetivo: Investigar as relações entre (i) espessura da camada de fibras nervosas da retina, topografia do nervo óptico e parâmetros do campo visual e (ii) propriedades biomecânicas da córnea, em controles normais e pacientes com hiperten são ocular e glaucoma primário de ângulo aberto. Métodos: Este estudo observacional, transversal, incl
Arq. Bras. Oftalmol.. Publicado em: 25/11/2019
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5. A NOVEL RAISIN SEGMENTATION ALGORITHM BASED ON DEEP LEARNING AND MORPHOLOGICAL ANALYSIS
ABSTRACT We propose a segmentation algorithm for raisin extraction. The proposed approach consists of the following aspects. Deep learning is used to predict the number of raisins in each connected region, and the shape features such as the roundness, area, X-axis value for the centroid, Y-axis value for the centroid, axis length and perimeter of each region
Eng. Agríc.. Publicado em: 04/11/2019
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6. First record of Unibarra paranoplatensis Suriano & Incorvaia, 1995 (Dactylogyridae: Monogenea) on Sorubim lima (Siluriformes: Pimelodidae) from Brazil
Resumo O objetivo deste estudo foi relatar a primeira ocorrência de Unibarra paranoplatensis Suriano & Incorvaia, 1995 em Sorubim lima Bloch & Schneider, 180 do Brasil. Nas brânquias de S. lima do Rio Acre, estado do Acre (Brasil), U. paranoplatensis apresentou características morfológicas e morfométricas similares àquelas descritas para Zungaro zungar
Rev. Bras. Parasitol. Vet.. Publicado em: 06/06/2019
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7. Diagnostic performance of thyroid ultrasound in Hürthle cell carcinomas
ABSTRACT Objective Hürthle cell carcinomas (HCCs) of the thyroid have been recently reclassified as a separate entity due to their distinct clinical and molecular profiles. Few studies have assessed the ability of preoperative characteristics in differentiating HCCs from Hürthle cell adenomas (HCAs) due to the low prevalence of both lesions. This study a
Arch. Endocrinol. Metab.. Publicado em: 25/04/2019
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8. Schinus molle: anatomy of leaves and stems, chemical composition and insecticidal activities of volatile oil against bed bug (Cimex lectularius)
Abstract The present work investigates the leaf and stem anatomy, chemical composition and insecticidal activities (against Cimex lectularius Linnaeus, 1758) of the volatile oils of Schinus molle L., Anacardiaceae, a Brazilian native traditional medicinal plant. Noteworthy micro-morphological features that can help in the identification and quality control o
Rev. bras. farmacogn.. Publicado em: 2019-02
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9. A predictive model to distinguish malignant and benign thyroid nodules based on age, gender and ultrasonographic features
Resumo Introdução: Persiste na literatura uma discussão sobre uma ferramenta padronizada de apoio à decisão para o manejo de nódulos tireoidianos. Objetivo: Criar um modelo de previsão estatística para o manejo de nódulos tireoidianos. Método: Foram selecionados 204 casos de nódulos tireoidianos benignos e 57 malignos para o estudo retrospectiv
Braz. j. otorhinolaryngol.. Publicado em: 2019-02
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10. Identification and management of inverted or everted edges of traumatic tympanic membrane perforations
Resumo Introdução: A maioria das perfurações de membrana timpânica traumáticas apresenta bordas invertidas ou evertidas; no entanto, os efeitos dessas configurações sobre a cicatrização espontânea do tímpano continuam a ser uma questão controversa. Objetivo: Investigar a influência de bordas invertidas ou evertidas sobre a cicatrização espo
Braz. j. otorhinolaryngol.. Publicado em: 2019-02
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11. Taxonomic revision of the Neotropical Lauxaniidae genus Neopachycerina Malloch, 1933 (Diptera: Schizophora), with description of a new species
Abstract A systematic review of the Neotropical Lauxaniidae genus Neopachycerina Malloch, 1933 is presented. The genus is characterized mainly based on some features of the head, like the anterior pair of fronto-orbital setae conspicuously shorter than posterior one and rather close to them; face with a distinct elevation between antennal bases; antenna slig
Pap. Avulsos Zool.. Publicado em: 29/11/2018
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12. Gross brain morphology of Rhamdia quelen (Quoy & Gaimard 1824) (Ostariophysi: Siluriformes: Heptapteridae)
Abstract The brain gross morphology of Rhamdia quelen is described and compared with seven species of six genera of Heptapteridae. Interspecific variation in shape, size, and position of brain subdivisions was observed in all examined species. The posterior position of the hypophysis on the hypothalamus and presence of a lateral subdivision on the lobus faci
Pap. Avulsos Zool.. Publicado em: 22/10/2018