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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
26/06/2017 |
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Data da última atualização: |
26/06/2017 |
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Autoria: |
FREITAS, C. H. de; MARTINS, F. B.; ABREU, M. C. |
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Afiliação: |
Cleverson Henrique de Freitas, Universidade Federal de Itajubá/Instituto de Recursos Naturais; Fabrina Bolzan Martins, Universidade Federal de Itajubá/Instituto de Recursos Naturais; Marcel Carvalho Abreu, Universidade Federal de Itajubá/Instituto de Recursos Naturais. |
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Título: |
Cardinal temperatures for the leaf development of Corymbia citriodora and Eucalyptus urophylla seedlings. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 5, p. 283-292, maio, 2017. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Temperaturas cardinais para o desenvolvimento foliar de mudas de Corymbia citriodora e Eucalyptus urophylla. |
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Conteúdo: |
The objective of this work was to estimate cardinal temperatures and phyllochron for the leaf development of the eucalyptus species Corymbia citriodora and Eucalyptus urophylla, in the seedling phase. A field experiment was carried out in a completely randomized design, in a 2x11 factorial arrangement, with the two eucalyptus species, 11 sowing dates, and five replicates, in the municipality of Itajubá, in the state of Minas Gerais, Brazil. The cardinal temperatures ? base, optimum, and maximum ? for leaf development were, respectively, 8.7, 17.1, and 41.3°C, for C. citriodora, and 11.5, 17.1, and 40.5°C for E. urophylla. The phyllochron of C. citriodora was 62.95°C day per leaf, and that of E. urophylla was 46.03°C day per leaf, which indicates that E. urophylla requires less energy accumulation than C. citriodora for leaf emission in the main stem. |
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Palavras-Chave: |
Filocrono; Leaf emission rate; Necessidade térmica; Phyllochron; Qualidade de mudas; Seedling quality; Taxa de emissão foliar; Temperatura do ar; Thermal requirement. |
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Thesaurus Nal: |
Air temperature. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/161058/1/Cardinal-temperatures-fot-eh-leaf.pdf
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Marc: |
LEADER 01830naa a2200277 a 4500
001 2071514
005 2017-06-26
008 2017 bl uuuu u00u1 u #d
100 1 $aFREITAS, C. H. de
245 $aCardinal temperatures for the leaf development of Corymbia citriodora and Eucalyptus urophylla seedlings.
260 $c2017
500 $aTítulo em português: Temperaturas cardinais para o desenvolvimento foliar de mudas de Corymbia citriodora e Eucalyptus urophylla.
520 $aThe objective of this work was to estimate cardinal temperatures and phyllochron for the leaf development of the eucalyptus species Corymbia citriodora and Eucalyptus urophylla, in the seedling phase. A field experiment was carried out in a completely randomized design, in a 2x11 factorial arrangement, with the two eucalyptus species, 11 sowing dates, and five replicates, in the municipality of Itajubá, in the state of Minas Gerais, Brazil. The cardinal temperatures ? base, optimum, and maximum ? for leaf development were, respectively, 8.7, 17.1, and 41.3°C, for C. citriodora, and 11.5, 17.1, and 40.5°C for E. urophylla. The phyllochron of C. citriodora was 62.95°C day per leaf, and that of E. urophylla was 46.03°C day per leaf, which indicates that E. urophylla requires less energy accumulation than C. citriodora for leaf emission in the main stem.
650 $aAir temperature
653 $aFilocrono
653 $aLeaf emission rate
653 $aNecessidade térmica
653 $aPhyllochron
653 $aQualidade de mudas
653 $aSeedling quality
653 $aTaxa de emissão foliar
653 $aTemperatura do ar
653 $aThermal requirement
700 1 $aMARTINS, F. B.
700 1 $aABREU, M. C.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 5, p. 283-292, maio, 2017.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
15/12/2021 |
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Data da última atualização: |
23/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NAKAI, D. K.; RIBEIRO, J. A. de A.; MARTINS, P. A.; SOARES, I. P.; SALUM, T. F. C.; COSTA, P. P. K. G. |
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Afiliação: |
DIOGO KEIJI NAKAI, CNPAE; JOSE ANTONIO DE AQUINO RIBEIRO, CNPAE; PEDRO A. MARTINS, Universidade de Brasília; ITANIA PINHEIRO SOARES, CNPAE; THAIS FABIANA CHAN SALUM, CNPAE; PATRICIA PINTO KALIL G COSTA, CNPAE. |
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Título: |
Evaporative light scattering detection based reversed-phase ultra-high-performance liquid chromatography method to quantify intermediates and end products of biodiesel production. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Chromatography A, v. 1663, 462726, 2022. |
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ISSN: |
0021-9673 |
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DOI: |
https://doi.org/10.1016/j.chroma.2021.462726 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: A fast method based on reversed-phase ultra-high-performance liquid chromatography using evaporative light scattering detection (RP-UHPLC-ELSD) was developed for monitoring the intermediates and end products of biodiesel production. Gradient elution of water, acetonitrile, and a mixture of acetonitrile:2-propanol:n-hexane was used. With a minimal and easy sample preparation, fatty acid methyl esters (FAME), fatty acid ethyl esters (FAEE), free fatty acids (FFA), monoacylglycerols (MAG), diacylglycerols (DAG), and triacylglycerols (TAG) were successfully separated. The developed method was used to monitor an ethylic enzymatic transesterification of soybean oil and to characterize the ester content of methyl and ethyl biodiesel. The ester content obtained was compared with the reference method by gas chromatography and flame ionization detector (GC-FID), with similar results for both methyl and ethyl biodiesel. The presented method is a simple and fast alternative, a 17-minutes run, to monitor the transesterification process, simultaneously quantifying all the analytes produced in the reaction: biodiesel and its intermediates. Limits of detection (LOD, between 29 and 307 ng) and quantification (LOQ, between 48 and 614 ng), linearity (R2>0.99), precision (between 0.30 and 6.58%), and accuracy (between 81.6 and 119.9%) were determined for the twenty-one compounds. |
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Palavras-Chave: |
RP-UHPLC-ELSD; UHPLC. |
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Thesaurus NAL: |
Acylglycerols; Biodiesel; Esters; Free fatty acids. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02291naa a2200277 a 4500
001 2137855
005 2022-11-23
008 2022 bl uuuu u00u1 u #d
022 $a0021-9673
024 7 $ahttps://doi.org/10.1016/j.chroma.2021.462726$2DOI
100 1 $aNAKAI, D. K.
245 $aEvaporative light scattering detection based reversed-phase ultra-high-performance liquid chromatography method to quantify intermediates and end products of biodiesel production.$h[electronic resource]
260 $c2022
520 $aAbstract: A fast method based on reversed-phase ultra-high-performance liquid chromatography using evaporative light scattering detection (RP-UHPLC-ELSD) was developed for monitoring the intermediates and end products of biodiesel production. Gradient elution of water, acetonitrile, and a mixture of acetonitrile:2-propanol:n-hexane was used. With a minimal and easy sample preparation, fatty acid methyl esters (FAME), fatty acid ethyl esters (FAEE), free fatty acids (FFA), monoacylglycerols (MAG), diacylglycerols (DAG), and triacylglycerols (TAG) were successfully separated. The developed method was used to monitor an ethylic enzymatic transesterification of soybean oil and to characterize the ester content of methyl and ethyl biodiesel. The ester content obtained was compared with the reference method by gas chromatography and flame ionization detector (GC-FID), with similar results for both methyl and ethyl biodiesel. The presented method is a simple and fast alternative, a 17-minutes run, to monitor the transesterification process, simultaneously quantifying all the analytes produced in the reaction: biodiesel and its intermediates. Limits of detection (LOD, between 29 and 307 ng) and quantification (LOQ, between 48 and 614 ng), linearity (R2>0.99), precision (between 0.30 and 6.58%), and accuracy (between 81.6 and 119.9%) were determined for the twenty-one compounds.
650 $aAcylglycerols
650 $aBiodiesel
650 $aEsters
650 $aFree fatty acids
653 $aRP-UHPLC-ELSD
653 $aUHPLC
700 1 $aRIBEIRO, J. A. de A.
700 1 $aMARTINS, P. A.
700 1 $aSOARES, I. P.
700 1 $aSALUM, T. F. C.
700 1 $aCOSTA, P. P. K. G.
773 $tJournal of Chromatography A$gv. 1663, 462726, 2022.
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