Fe2 Content
Mostrando 13-24 de 264 artigos, teses e dissertações.
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13. Quality pattern evaluation of frozen soursop pulps: an assessment based on chemical composition and chemometric analysis
Abstract In the present study, the physicochemical properties and mineral composition of commercially-frozen soursop pulps from the southern region of the state of Bahia, Brazil, were evaluated. The physicochemical parameters such as soluble solids (°Brix), acidity and pH were determined according to reference methodologies. For mineral composition evaluati
Food Sci. Technol. Publicado em: 13/12/2019
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14. Centesimal and mineral composition of the fruit in Brazilian genotypes of feijoa (Acca sellowiana)
Resumo O objetivo deste trabalho foi avaliar a composição centesimal [matéria seca (MS), matéria mineral (MM), proteína bruta (PB), gordura bruta (GB) e fibra bruta (FB)] e mineral (Ca, Mg, N, P, K, Fe, Zn, Cu e Mn) nos tecidos da casca e da polpa dos frutos de goiabeira-serrana (cultivares Alcântara, Mattos, Helena e Nonante, e acesso 2316). Os genó
Rev. Bras. Frutic.. Publicado em: 05/12/2019
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15. Production and Nutrient Accumulation of Common Bean Cultivars under Competition with Weed
RESUMO: O manejo inadequado das plantas daninhas é uma das causas da baixa produtividade do feijoeiro, pois ele é muito suscetível à interferência delas, devido ao seu crescimento inicial lento. Objetivou-se com este trabalho avaliar a influência da trapoeraba na produção de grãos e acúmulo de nutrientes de cultivares de feijoeiro. O experimento fo
Planta daninha. Publicado em: 02/12/2019
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16. Evaluation of Phytoremediation Potential of Castor Cultivars for Heavy Metals from Soil
RESUMO: A fitorremediação é uma ferramenta útil para recuperar solos contaminados com metais pesados. Este estudo foi realizado para testar dois cultivares de mamona (Ricinus communis) [Local e DS-30] quanto à fitoextração de metais pesados de solo contaminado por concentrações conhecidas de sete metais (Cu, Cr, Fe, Mn, Ni, Pb e Zn). Um ensaio em va
Planta daninha. Publicado em: 02/12/2019
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17. Cichorium intybus from India: GC-MS Profiling, Phenolic Content and in vitro Antioxidant Capacity of Sequential Soxhlet Extracted Roasted Roots
Abstract Research on the bio-activities and chemical composition of roasted C. intybus roots from India is very little. In present studies GC-MS analysis of volatile components of roasted C. intybus roots, phenolics and flavonoid content estimation and antioxidant potential of roasted C. intybus roots was carried out. Antioxidant potential was also evaluate
Braz. arch. biol. technol.. Publicado em: 25/11/2019
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18. Degradation of Acid Red 8 Dye Using Photo-Fenton Reaction Mediated by Titanium Modified Catalysts
Catalysts prepared by co-precipitation of iron and titanium were evaluated in heterogeneous photo-Fenton degradation of the azo dye Acid Red 8 under blacklight irradiation. Materials with different titanium contents (0 < Ti/Fe < 0.6) were characterized using X-ray diffractometry, scanning electron microscopy, X-ray fluorescence spectroscopy, specific surface
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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19. The influence of Cu content on high temperature corrosion behavior of heat - resistant molten salt steel
ABSTRACT This work studies the high temperature corrosion behavior of new heat-resistant steel with salt coating method of 75%Na2SO4+25%NaCl coating on the steel surface at 700ºC. The chemical composition of corrosion products and surface morphology of the corrosion layer were analyzed using X-ray diffractometer (XRD), scanning electron microscopy (SEM), en
Matéria (Rio J.). Publicado em: 16/09/2019
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20. Preparação, caracterização e avaliação catalítica do compósito Fe2O3/grafite em reação foto-Fenton
RESUMO Neste trabalho, compósito Fe2O3/grafite foi preparado e usado como um catalisador em reação foto-Fenton para a descoloração de solução aquosa contendo o corante amaranto sob irradiação de luz visível. Amostras com diferentes teores de Fe2O3 suportados sobre grafite foram preparadas e caracterizadas por difração de raios-X (DRX), adsorção
Matéria (Rio J.). Publicado em: 16/09/2019
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21. Effect of Quenching Process on Microstructure and performance of High-Boron High-Speed Steel
ABSTRACT The effects of quenching process on microstructure and hardness of High-Boron High-Speed Steel (HB-HSS) containing 0.4%C-6.0%Cr-4.0%Mo-1.0%V-1.0%Si-0.5Mn-x%B-y%Al (x=1.0, 1.5, 2.0, y=1.0, 2.0, 3.0) were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Rockwell hardness tester. The exp
Matéria (Rio J.). Publicado em: 16/09/2019
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22. Hydrogen Peroxide Electrogeneration by Gas Diffusion Electrode Modified With Tungsten Oxide Nanoparticles for Degradation of Orange II and Sunset Yellow FCF Azo Dyes
In this work, the gas diffusion electrode (GDE) cathode of Vulcan XC72 carbon modified with nanoparticles of WO2.72 (WO2.72 / Vulcan XC72) was used for H2O2 electrogeneration and degradation of 350 mL of Orange II (OII) and Sunset Yellow FCF (SY) azo dyes by electro-Fenton (EF) and photoelectro-Fenton (PEF) processes with different Fe2+ initial content (1.00
J. Braz. Chem. Soc.. Publicado em: 16/09/2019
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23. Atividade biológica e quantificação de compostos bioativos em extrato de erva-mate e sua aplicação em hambúrguer de peixe
Resumo A erva-mate possui compostos biologicamente ativos com aplicação industrial. Cafeína, rutina e ácido clorogênico presentes neste produto possuem atividade antioxidante e o último ainda é antimicrobiano. Este estudo objetivou avaliar a atividade biológica do extrato de erva-mate e quantificar compostos bioativos, bem como aplicar o extrato em h
Braz. J. Food Technol.. Publicado em: 08/08/2019
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24. Effects of Cold Rolling Deformation on Microstructure and Damping Capacity of a Fe-Mn-Cr-Co-Si Alloy
The microstructure evolution of Fe-19Mn-8Cr-1Co-0.2Si (wt.%) alloy and Fe-19Mn (wt.%) alloy during cold rolling and its effect on the damping capacity of the two alloys were investigated. It was shown that the damping capacity of the two alloys was enhanced significantly owing to the deformation-induced ε-martensite and stacking faults. The Fe-19Mn-8Cr-1Co-
Mat. Res.. Publicado em: 11/07/2019