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Mostrando 1-12 de 102 artigos, teses e dissertações.
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1. Analysis and evaluation of structural properties of Co3O4 microparticles obtained at low temperature
Abstract In the present research, the synthesis of cobalt oxide Co3O4 was carried out using the sol-gel technique with subsequent heat treatment at 225 and 235 °C. The final product obtained was characterized by X-ray diffraction (XRD), showing a pure crystalline phase of Co3O4, cell parameters a=b=c=8.071 Å, and a volume of 525.7 Å3. The particle size wa
Cerâmica. Publicado em: 2022
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2. Proposal of automated computational method to support Virginia tobacco classification
RESUMO Este artigo propõe um método automático para classificação de folhas de tabaco curado. Tipicamente este processo é realizado de modo manual, possibilitando erros humanos. Aliado a isso, a existência de um procedimento comparativo automatizado, auxiliando na realização da classificação, poderá tornar tal processo mais rápido e transparente
Rev. bras. eng. agríc. ambient.. Publicado em: 09/09/2019
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3. El análisis de imágenes como herramienta de monitoreo en la deshidratación de rodajas de banana
Abstract The objective of this work was to evaluate the morphometric, fractal and color changes during the dehydration of banana slices through the use of image analysis. The convective drying was performed between 75 °C and 134 °C at an air velocity of 0.65 m s-1. Results showed that the images provided quantitative information of the morphometric changes
Braz. J. Food Technol.. Publicado em: 15/08/2019
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4. Stability and microstructure of powdered pulp of the Palmer mango obtained by the process of lyophilisation
RESUMO O objetivo deste trabalho foi o estudo de estabilidade da polpa de manga em pó obtida pelo processo de liofilização, assim como das suas características estruturais através de análise de microscopia eletrônica. Em resposta ao delineamento experimental realizado precedentemente utilizando concentrações de maltodextrina de 0%; 10%; 20% e 30% e
Rev. Ciênc. Agron.. Publicado em: 2019-06
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5. Development and evaluation of a remotely controlled and monitored self-propelled sprayer in tomato crops
RESUMO O tomateiro é uma das principais culturas no Brasil. No seu cultivo em larga escala, são aplicados agrotóxicos sobre a planta para impedir a ação direta ou indireta de formas de vida animal ou vegetal, visando uma maior produtividade e qualidade do fruto. Os produtos utilizados podem, no entanto, afetar a saúde dos trabalhadores envolvidos na at
Rev. Ciênc. Agron.. Publicado em: 2019-03
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6. Lembranças do existir: narrativas de memória em A disciplina do amor, de Lygia Fagundes Telles
Resumo O objetivo deste trabalho é analisar a representação da memória na obra A disciplina do amor (1980), de Lygia Fagundes Telles. Para tanto, problematiza-se o modo como a narradora revisita o passado na tentativa de compreensão do presente. Por ser produto da linguagem, o relato memorialístico vai além da sua especificidade histórica. Na ressign
Estud. Lit. Bras. Contemp.. Publicado em: 21/02/2019
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7. Mini-channel Two Phase Flow of Hydrogen Peroxide: Decomposition with Silver Catalyst
ABSTRACT Hydrogen peroxide is a chemical compound which is commonly used as a disinfectant at lower concentrations. The chemical is called as a green propellant for space applications. Water and oxygen are the products after self-decomposition of the compound at higher concentrations. The reaction rate at lower concentrations can be enhanced by using catalys
J. Aerosp. Technol. Manag.. Publicado em: 14/06/2018
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8. Comparing osteogenic effects between concentrated growth factors and the acellular dermal matrix
Abstract Concentrated growth factor (CGF) is an autogenuous product that contains highly concentrated number of platelets and can be derived from venous blood by selective centrifugation. It has been speculated that local growth factors in human platelets (insulinlike growth factor, IGF; transforming growth factor, TGF-b; platelet derived growth factor, PDGF
Braz. oral res.. Publicado em: 03/05/2018
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9. Models for leaf area estimation in dwarf pigeon pea by leaf dimensions
ABSTRACT This study aims to determine the most suitable model to estimate the leaf area of dwarf pigeon pea in function of the leaf central leaflet dimension. Six samplings of 200 leaves were performed in the first experiment, at 36, 42, 50, 56, 64, and 72 days after emergence (DAE). In the second experiment, seven samplings of 200 leaves were performed at 2
Bragantia. Publicado em: 12/03/2018
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10. Welfare-friendly Products: availability, labeling and opinion of retailers in Curitiba, Southern Brazil,
Abstract: The market for welfare-friendly products (WFP) is increasing worldwide; however, there is a lack of information on this topic in Brazil. We investigated availability, product information and opinion of retailers about WFP in Curitiba, Southern Brazil. We visited 36 strategically located retailers, conducting product evaluation and interviews with m
Rev. Econ. Sociol. Rural. Publicado em: 2018-03
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11. Interregional correlations of glucose metabolism between the basal ganglia and different cortical areas: an ultra-high resolution PET/MRI fusion study using 18F-FDG
Basal ganglia have complex functional connections with the cerebral cortex and are involved in motor control, executive functions of the forebrain, such as the planning of movement, and cognitive behaviors based on their connections. The aim of this study was to provide detailed functional correlation patterns between the basal ganglia and cerebral cortex by
Braz J Med Biol Res. Publicado em: 13/11/2017
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12. A research on determination of quality characteristics of chicken burgers produced with transglutaminase supplementation
Abstract Transglutaminases are enzymes that catalyze the cross-linking between peptides or proteins. They play an important role in heat stability, gel-formation capability, water-holding capacity, emulsification and nutritional properties of proteins. They are preferred in the use of a variety of meat products due to the binding properties. In this study th
Food Sci. Technol. Publicado em: 26/10/2017