Simultaneous Reactions
Mostrando 1-12 de 126 artigos, teses e dissertações.
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1. CÉLULAS ELETROLÍTICA E A COMBUSTÍVEL CONFECCIONADAS COM MATERIAIS ALTERNATIVOS PARA O ENSINO DE ELETROQUÍMICA
The proposal addresses the electrochemical experimentation as a pedagogical instrument for the integral and dynamic student involvement, facilitating the teaching-learning process. The experimental proposal focuses on the conversion of electrical energy to chemical energy and vice versa. The experiments for the two simultaneous energy conversions were design
Quím. Nova. Publicado em: 2021-01
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2. Political agency of indigenous peoples: the Guarani-Kaiowa’s fight for survival and recognition
Resumo O artigo examina as estratégias de sobrevivência e reações políticas de grupos indígenas em áreas de fronteiras agrícolas, que são fortemente influenciadas por símbolos culturais, vínculos familiares e respostas vinculadas ao apego pela terra. Discute-se a especificidade da trajetória sócio-espacial dos povos indígenas e, além disso, pr
Vibrant, Virtual Braz. Anthr.. Publicado em: 17/10/2019
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3. Avaliação do tratamento térmico no catalisador magnético Ni0,5Zn0,5Fe2O4 e sua atividade catalítica na produção de biodiesel por transesterificação e esterificação simultânea do óleo de fritura
Resumo O objetivo deste trabalho foi avaliar o efeito do tratamento térmico na síntese do catalisador Ni0,5Zn0,5Fe2O4 e o desempenho catalítico em reações de transesterificação e esterificação simultânea (TES) do óleo de fritura. Os catalisadores foram sintetizados por reação de combustão sem e com tratamento térmico sequencial a 800 °C com t
Cerâmica. Publicado em: 2019-01
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4. FAST GC-FID METHOD FOR MONITORING ACIDIC AND BASIC CATALYTIC TRANSESTERIFICATION REACTIONS IN VEGETABLE OILS TO METHYL ESTER BIODIESEL PREPARATION
A fast gas chromatography with a flame ionisation detector (GC-FID) method for the simultaneous analysis of methyl palmitate (C16:0), stearate (C18:0), oleate (C18:1), linoleate (C18:2) and linolenate (C18:3) in biodiesel samples was proposed. The analysis was conducted in a customised ionic-liquid stationary-phase capillary, SLB-IL 111, with a length of 14
Quím. Nova. Publicado em: 2016-04
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5. SIMULTANEOUS DETERMINATION OF PROTOCATECHUIC ALDEHYDE AND PROTOCATECHUIC ACID USING THE LOCALIZED SURFACE PLASMON RESONANCE PEAK OF SILVER NANOPARTICLES AND CHEMOMETRIC METHODS
A simple and sensitive spectrophotometric method is proposed for the simultaneous determination of protocatechuic acid and protocatechuic aldehyde. The method is based on the difference in the kinetic rates of the reactions of analytes with [Ag(NH3)2]+ in the presence of polyvinylpyrrolidone to produce silver nanoparticles. The data obtained were processed b
Quím. Nova. Publicado em: 2015-08
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6. Novel set of real-time PCR primers for simultaneous detection of Liberibacter species associated with citrus Huanglongbing
Huanglongbing (HLB), a devastating citrus disease caused by the bacterium “Candidatus Liberibacter spp.”, is now responsible for significant economic losses worldwide. Yet, no effective disease control has been found, and the non-cultivability of the bacterium has severely hampered studies on the pathogen. The 16S rDNA gene is a well-characterized sequen
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-06
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7. Continuous catalyst-free production of esters from Jatropha curcas L. oil under supercritical ethanol
In the present study, the transesterification of Jatropha oil in a continuous catalyst-free process using supercritical ethanol was investigated. Experiments were performed in a packed-bed tubular reactor by studying the effect on the reaction of temperature, pressure, water and cosolvent (n-hexane) concentrations, keeping the oil:ethanol mass ratio fixed at
Braz. J. Chem. Eng.. Publicado em: 2014-09
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8. Simultaneous detection of Brazilian isolates of grapevine viruses by TaqMan real-time RT-PCR
The aim of this work was to evaluate the efficiency of real-time RT-PCR for detection of different isolates of ten important virus species that infect grapevines in Brazil: Grapevine leafroll-associated virus (GLRaV-1, -2, -3 and -5), Grapevine virus A (GVA), Grapevine virus B (GVB), Grapevine virus D (GVD), Grapevine rupestris stem pitting-associated virus
Trop. plant pathol.. Publicado em: 2013-04
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9. Modificação de poli(fluoreto de vinilideno) induzida por radiação gama para aplicação como compósito ionomérico de metal-polímero / Poly(vinylidene fluoride) modification induced by gamma irradiation for application as ionic polymer-metal composite
Gamma-radiation-induced grafting of styrene into poly(vinylidene fluoride) (PVDF) films with 0.125 mm thickness at doses from 1 to 100 kGy in the presence of a styrene/N,N- dimethylformamide (DMF) solution (1:1, v/v) and styrene/toluene (1:1, v/v) at dose rate of 5 kGy h-1 was carried out by simultaneous method under nitrogen atmosphere at room temperature,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2011
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10. Crescimento de grãos e condutividade elétrica da céria-samária usando o método de sinterização em duas etapas / Grain growth and electrical conductivity of samaria-doped ceria sintered by the two-step sintering method
Samaria-doped ceria solid solution has been proposed to be used as solid electrolyte in Solid Oxide Fuel Cells due to its high ionic conductivity at intermediate temperatures (500-750 ºC). One of the main problems related to this solid solution is the relatively low sinterability. In this work, sintering of powder compacts was carried out by the two-step si
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/07/2010
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11. Blue thermoluminescence emission of annealed lithium rich aluminosilicates
The blue thermoluminescence (TL) emission of different thermally annealed (i) β-eucryptite (LiAlSiO4), (ii) virgilite-petalite (LiAlSi5O12) and (iii) virgilite-petalite-bikitaite (LiAlSi10O22) mixed crystals have been studied. The observed changes in the TL glow curves could be linked to simultaneous processes taking place in the lithium aluminosilicate lat
Brazilian Journal of Physics. Publicado em: 2010-09
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12. Enzymatic route selection for monoglyceride production using immobilized lipase on matrix obtained by sol-gel technique / Estratégias para desenvolvimento de um sistema operacional eficiente para a produção enzimática de monoglicerídeos
The objective of this project was to select the best enzymatic route to produce monoglycerides using lipase immobilized on matrix obtained by sol-gel technique, aiming to contribute for a better utilization of the glycerol generated as by-product in the biodiesel synthesis. For this purpose two methodologies were analyzed: (1) direct esterification of the gl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/11/2009