Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda
        Busca avançada

Botão Atualizar

Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 3
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Optimización de la síntesis de biodiésel a partir de aceite crudo de Palma Africana (Elaeis guineensis Jacq) Agrociencia
Guerrero-Peña,Armando; Anguebes-Franseschi,Francisco; Castelán-Estrada,Mepivoseth; Morales-Ramos,Victorino; Córdova-Quiroz,Atl V; Zavala-Loría,José C; Bolaños-Reinoso,Eusebio.
La palma africana (Elaeis guineensis Jacq.) es un cultivo usado para producir aceite y ha generado interés para obtener combustibles alternativos al petróleo. El objetivo de este estudio fue determinar las condiciones óptimas de reacción de la metanólisis del aceite crudo de palma africana (ACP), para sintetizar biodiésel en condiciones de laboratorio. Un diseño compuesto central rotatorio y la metodología de superficie de respuesta se usaron para evaluar la eficiencia del proceso. Las variables estudiadas fueron concentración de metanol (entre 40 y 100 % p/p), concentración de catalizador (2 a 4 % p/p), tiempo (40 a 160 min) y temperatura de reacción (50 a 66 °C). Las concentraciones de metanol y de catalizador y el tiempo de reacción tuvieron un efecto...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catálisis alcalina; Elaeis guineensis Jacq; Metanólisis; Optimización de proceso; Superficie de respuesta.
Ano: 2013 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952013000700002
Imagem não selecionada

Imprime registro no formato completo
IDENTIFICATION OF AGRONOMIC MANAGEMENT UNITS BASED ON PHYSICAL ATTRIBUTES OF SOIL J. Soil Sci. Plant Nutr.
Cucunubá-Melo,J.L; Álvarez-Herrera,J.G; Camacho-Tamayo,J.H.
Oil palm (Elaeis guineensis Jacq) is an alternative for the development of productive systems in the tropics. By determining the spatial variability of physical characteristics of soil, specific recommendations for certain areas within a zone can be made. Geostatistical analysis can determine the existence and characteristics of the spatial distribution and is an appropriate tool for analyzing the spatial variability of soil properties. The aim of this study was to determine areas with homogeneous physical characteristics in order to establish agricultural management units, using geostatistical techniques. For this study, 62 samples were collected in 10.6 ha in the municipality of El Reten (Magdalena, Colombia). The properties analyzed were: content of...
Tipo: Journal article Palavras-chave: Geoestatistics; Semivariogram; Kriging; Precision farming; Elaeis guineensis Jacq.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162011000100008
Imagem não selecionada

Imprime registro no formato completo
Least limiting water range for oil palm production in Amazon region, Brazil Scientia Agricola
Sato,Michel Keisuke; Lima,Herdjania Veras de; Ferreira,Raphael Leone da Cruz; Rodrigues,Sueli; Silva,Álvaro Pires da.
ABSTRACT In areas cultivated with oil palm, typically mechanized field operations using heavy vehicles may negatively affect soil physical properties and productivity. The aim of this study was to evaluate soil physical quality in an area cultivated with oil palm by monitoring the temporal variation of the soil water content and relating it to the critical limits of the least limiting water range. Soil bulk density (Bd), soil penetration resistance (SR), least limiting water range (LLWR), and water stress days (WSD) were used to assess soil physical quality in planting rows (PR) and the traffic zone (TZ) at depths 0-20, 20-40, and 40-60 cm. The Bd was higher and the LLWR was reduced in TZ only at the surface layer. The effect of temporal variation in soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Elaeis guineensis Jacq; Soil physical quality; Soil compaction; Water stress.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000200148
Registros recuperados: 3
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita
Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional