Results 21 to 30 of about 58,845,384 (82)

Thermal behavior of diesel/biodiesel blends of biodiesel obtained from buriti oil=Comportamento térmico de blendas de diesel/biodiesel de biodiesel obtido a partir do óleo de buriti [PDF]

Acta Scientiarum: Technology, 2012
Biodiesel has been obtained from methanolysis of buriti oil. This biodiesel was added in fossil diesel in order to obtain diesel/biodiesel blends. Thermal analysis of blends were carried on 30-600oC range at rate of 10oC min.-1.
Alexandre Gustavo Soares do Prado, Francisco Dantas Filho, Paulo Anselmo Ziani Suarez, Elaine Alves Faria, Ellen Pozzebom, Romulo Davi Albuquerque Andrade   +5 more
doaj  

Caracterização cinética e termodinâmica de β-galactosidase de Kluyveromyces marxianus CCT 7082 fracionada com sulfato de amônio Kinetics and thermodynamic characterization of β-galactosidase from Kluyveromyces marxianus CCT 7082 fractionated with ammonium sulphate

Brazilian Journal of Food Technology, 2012
A β-galactosidase é uma enzima importante que atua na hidrólise da lactose, podendo ser empregada na obtenção de alimentos destinados a consumidores intolerantes a esse dissacarídeo.
Renata Bemvenuti Heidtmann, Susan Hartwig Duarte, Lidiane Pereira de Pereira, Anna Rafaela Cavalcante Braga, Susana Juliano Kalil   +4 more
doaj   +1 more source

Hysteresis and thermodynamic properties of water sorption in ‘Malagueta’ pepper seeds

Revista Brasileira de Engenharia Agrícola e Ambiental
The objective of this study was to determine hysteresis, enthalpy, entropy, enthalpy-entropy compensation theory and Gibbs free energy for water adsorption and desorption in ‘Malagueta’ pepper seeds.
Hellismar W. da Silva, Renato S. Rodovalho, Isneider L. Silva   +2 more
doaj   +1 more source

Adsorção de nitrato em caulinita a partir de rejeito de caulim modificado com uréia

Cerâmica, 2013
Este estudo avalia a eficiência, viabilidade e espontaneidade de processos de adsorção do íon nitrato em caulinita sem tratamento e modificada com uréia, empregando como material de partida o rejeito de processamento de caulim do rio Jari.
L. C. Tavares, V. P. Lemos, M. H. T. Pinheiro, H. A. D. Filho, K. G. Fernandes   +4 more
doaj   +1 more source

Thermodynamic properties of water desorption in Buchenavia capitata (Vahl) Eichler

Revista Brasileira de Engenharia Agrícola e Ambiental
Thermodynamic properties provide information on energy demand and kinetic parameters in water sorption processes in agricultural products. Such information is essential to analyze and scale drying and storage equipment. The objective of this study was to
Hellismar W. da Silva, Daniel E. C. de Oliveira, Osvaldo Resende, Lílian M. Costa   +3 more
doaj   +1 more source

Performance of natural and modified smectite: kinetic and thermodynamics involving arsenic (V) adsorption Desempenho de esmectita natural e modificada: cinética e termodinâmica envolvendo adsorção de arsênio (V)

Cerâmica, 2010
A natural smectite sample has been modified by organofunctionalization process using synthetic route involved the reaction of 2-mercaptopyrimidine with 3-chloropropyltriethoxysilane. The resulting material (S MPY) was characterized by SEM, FTIR, textural
D. L Guerra, C Airoldi, R. R Viana
doaj   +1 more source

Zinc adsorption in highly weathered soils Adsorção de zinco em solos altamente intemperizados

Pesquisa Agropecuária Brasileira, 2008
The objective of this work was to assess the effects of pH and ionic strength upon zinc adsorption, in three highly weathered variable charge soils. Adsorption isotherms were elaborated from batch adsorption experiments, with increasing Zn concentrations
José Carlos Casagrande, Marcio Roberto Soares, Ernesto Rinaldi Mouta   +2 more
doaj   +1 more source

EVALUACIÓN DE LAS PROPIEDADES TERMODINÁMICAS DE SORCIÓN DE LA UCHUVA (Physalis peruviana L.) SORÇÃO TERMODINÁMICA AVALIAÇÃO DAS PROPRIEDADES GOOSEBERRY CAPE (Physalis peruviana L.) SORPTION THERMODYNAMICS PROPERTIES EVALUATION OF THE CAPE GOOSEBERRY (Physalis peruviana L.)

Biotecnología en el Sector Agropecuario y Agroindustrial, 2012
El equilibrio de sorción de agua a diferentes temperaturas (25, 35, 50 y 60°C) en un rango de humedad relativa, de 0.10 a 0.85, se determinó para la uchuva usando un método gravimétrico estático.
FARID B. CORTÉS, ANDRÉS BETANCOURT, BENJAMIN ROJANO, VERONICA LÓPEZ, ERIKA ARENAS   +4 more
doaj  

Thermodynamic properties for different equilibrium moisture content in sunn hemp seeds

Journal of Seed Science
: Losses of agroindustry are generally wet products that must be dried to posterior use and storage. In order to optimize drying processes, the study of isotherms and thermodynamic properties become essential to understand the water sorption mechanisms ...
Suian José Granella, Divair Christ, Taise Raquel Bechlin, Ivan Werncke, Silvia Renata Machado Coelho   +4 more
doaj   +1 more source

Informe energia elétrica [PDF]

, 2022
O Informe do Setor Elétrico de Janeiro destaca a melhora dos níveis de precipitação nas principais bacias hidrográficas do SIN. Isso contribuiu para ascensão nas afluências dos submercados e, por consequência, para a redução do despacho das termelétricas.
FGV Energia
core   +1 more source