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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/02/1996 |
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Data da última atualização: |
26/02/1996 |
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Autoria: |
DEDECEK, R. A. |
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Título: |
Coberturas permanentes do solo na erosao sob condicoes de cerrados. |
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Ano de publicação: |
1989 |
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Fonte/Imprenta: |
Pesquisa Agropecuaria Brasileira, Brasilia, v.24, n.4, p.483-488, 1989. |
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Idioma: |
Português |
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Conteúdo: |
Para caracterizar a acao de diferentes coberturas permanentes do solo no controle da erosao, simulando a acao de cobertura vegetal, foram testados os seguintes tratamentos, em Latossolo vermelho-escuro (Haplustox) textura argilosa e 5,5% de declive: a) solo sem cobertura em pousio; b) solo com cobertura artificial e suspensa e c) solo com cobertura artificial em contato com a superficie do solo. Os resultados indicam que a escassez e ma distribuicao das chuvas, com que e prejudicado o desenvolvimento normal dos cultivos anuais, tornam necessaria a cobertura permanente. Enquanto os cultivos anuais reduziram apenas em 50% as perdas de solo, a cobertura artificial suspensa reduziu em 85% as perdas do solo, em comparacao com o tratamento sem cobertura. Estimou-se em 87,6% a contribuicao erosiva do impacto direto da chuva no solo nas perdas de solo. Embora modesta a acao da enxurrada, deve-se considerar que as parcelas sao de 22m de comprimento, o equivalente a distancia recomendada entre terracos neste declive. Considerando-se as perdas por salpique, o efeito da cobertura do solo foi menos evidente. As correlacoes entre as perdas de solo por salpique e as perdas nas parcelas nos tratamentos sem cobertura confirmam a importancia do impacto das gotas de chuva no solo. |
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Palavras-Chave: |
Erosion. |
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Thesagro: |
Cerrado; Enxurrada; Erosão; Solo. |
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Thesaurus Nal: |
runoff; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01808naa a2200205 a 4500
001 1550926
005 1996-02-26
008 1989 bl --- 0-- u #d
100 1 $aDEDECEK, R. A.
245 $aCoberturas permanentes do solo na erosao sob condicoes de cerrados.
260 $c1989
520 $aPara caracterizar a acao de diferentes coberturas permanentes do solo no controle da erosao, simulando a acao de cobertura vegetal, foram testados os seguintes tratamentos, em Latossolo vermelho-escuro (Haplustox) textura argilosa e 5,5% de declive: a) solo sem cobertura em pousio; b) solo com cobertura artificial e suspensa e c) solo com cobertura artificial em contato com a superficie do solo. Os resultados indicam que a escassez e ma distribuicao das chuvas, com que e prejudicado o desenvolvimento normal dos cultivos anuais, tornam necessaria a cobertura permanente. Enquanto os cultivos anuais reduziram apenas em 50% as perdas de solo, a cobertura artificial suspensa reduziu em 85% as perdas do solo, em comparacao com o tratamento sem cobertura. Estimou-se em 87,6% a contribuicao erosiva do impacto direto da chuva no solo nas perdas de solo. Embora modesta a acao da enxurrada, deve-se considerar que as parcelas sao de 22m de comprimento, o equivalente a distancia recomendada entre terracos neste declive. Considerando-se as perdas por salpique, o efeito da cobertura do solo foi menos evidente. As correlacoes entre as perdas de solo por salpique e as perdas nas parcelas nos tratamentos sem cobertura confirmam a importancia do impacto das gotas de chuva no solo.
650 $arunoff
650 $asoil
650 $aCerrado
650 $aEnxurrada
650 $aErosão
650 $aSolo
653 $aErosion
773 $tPesquisa Agropecuaria Brasileira, Brasilia$gv.24, n.4, p.483-488, 1989.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Origem |
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Cutter |
Registro |
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URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
28/05/2018 |
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Data da última atualização: |
29/04/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CRUCELLO, J.; MIRON, L. F. O.; FERREIRA, V. H. C.; NAN, H.; MARQUES, M. O. M.; RITSCHEL, P. S.; ZANUS, M. C.; ANDERSON, J. L.; POPPI, R. J.; HANTAO, L. W. |
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Afiliação: |
Juliana Crucello, Institute of Chemistry, Universidade Estadual de Campinas, 270 Monteiro Lobato, Campinas, SP 13083-970, Brazil; Luiz F. O. Miron, Institute of Chemistry, Universidade Estadual de Campinas, 270 Monteiro Lobato, Campinas, SP 13083-970, Brazil; Victor H. C. Ferreira, Institute of Chemistry, Universidade Estadual de Campinas, 270 Monteiro Lobato, Campinas, SP 13083-970, Brazil; He Nan, Department of Chemistry, Iowa State University, Ames, IA 50011, USA; Marcia O. M. Marques, Agronomic Institute of Campinas, Campinas, SP 13012-970, Brazil; PATRICIA SILVA RITSCHEL, CNPUV; MAURO CELSO ZANUS, CNPUV; Jared L. Anderson, Department of Chemistry, Iowa State University, Ames, IA 50011, USA; Ronei J. Poppi, National Institute of Science and Technology in Bioanalytics (INCTBio), Campinas, SP 13083-970, Brazil; Leandro W. Hantao, Institute of Chemistry, Universidade Estadual de Campinas, 270 Monteiro Lobato, Campinas, SP 13083-970, Brazil. |
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Título: |
Characterization of the aroma profile of novel Brazilian wines by solid-phase microextraction using polymeric ionic liquid sorbent coatings. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Analytical and Bioanalytical Chemistry, online, May 2018. |
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DOI: |
https://doi.org/10.1007/s00216-018-1134-3 |
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Idioma: |
Inglês |
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Conteúdo: |
In this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from ?Isabella? and ?BRS Magna? cultivars?the latter was recently introduced by the Brazilian Agricultural Research Corporation ? National Grape & Wine Research Center. In this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from ?Isabella? and ?BRS Magna? cultivars?the latter was recently introduced by the Brazilian Agricultural Research Corporation ? National Grape & Wine Research Center. The structurally tuned SPME coatings were compared to the commercial SPME phases, namely poly(acrylate) (PA) and divinylbenzene/carboxen/poly(dimethylsiloxane) (DVB/CAR/PDMS). The separation, detection and identification of the aroma profileswere obtained using comprehensive two-dimensional gas chromatography mass spectrometry (GC×GC-MS). The best performing PIL-based SPME fiber, namely 1-hexadecyl-3-vinylimidazolium bis[(trifluoromethyl)sulfonyl]imide with 1,12-di(3-vinylimidazolium)dodecane dibis[(trifluoromethyl)sulfonyl]imide incorporated cross-linker supported on an elastic nitinol wire, exhibited superior performance to DVB/CAR/PDMS regarding the average number of extracted peaks and extracted more polar analytes providing additional insight into the aroma profile of ?BRS Magna? wines. Four batches of wine were evaluated, namely ?Isabella? and ?BRS Magna? vintages 2015 and 2016, using highly selective PIL-based SPME coatings and enabled the detection of 350+ peaks. Furthermore, this is the first report evaluating the aroma of ?BRS Magna? wines. A hybrid approach that combined pixel-based Fisher ratio and peak table-based data comparison was used for data handling. This proof-of-concept experiment provided reliable and statistically valid distinction of wines that may guide regulation agencies to create high sample throughput protocols to screen wines exported by Brazilian vintners. MenosIn this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from ?Isabella? and ?BRS Magna? cultivars?the latter was recently introduced by the Brazilian Agricultural Research Corporation ? National Grape & Wine Research Center. In this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from ?Isabella? and ?BRS Magna? cultivars?the latter was recently introduced by the Brazilian Agricultural Research Corporation ? National Grape & Wine Research Center. The structurally tuned SPME coatings were compared to the commercial SPME phases, namely poly(acrylate) (PA) and divinylbenzene/carboxen/poly(dimethylsiloxane) (DVB/CAR/PDMS). The separation, detection and identification of the aroma profileswere obtained using comprehensive two-dimensional gas chromatography mass spectrometry (GC×GC-MS). The best performing PIL-based SPME fiber, namely 1-hexadecyl-3-vinylimidazolium bis[(trifluoromethyl)sulfonyl]imide with 1,12-di(3-vinylimidazolium)dodecane dibis[(trifluoromethyl)sulfonyl]imide incorporated cross-linker supported on an elastic nitinol wire, exhibited superior performance to DVB/CAR/PDMS regarding the average number o... Mostrar Tudo |
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Palavras-Chave: |
Flavor and aroma; Foodomics; Sensomics. |
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Thesaurus NAL: |
Biomarkers; Food chemistry. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/177777/1/Crucello-et-al-2018-Analytical-and-Bioanalytical-Chemistry.pdf
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Marc: |
LEADER 03159naa a2200301 a 4500
001 2092008
005 2019-04-29
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s00216-018-1134-3$2DOI
100 1 $aCRUCELLO, J.
245 $aCharacterization of the aroma profile of novel Brazilian wines by solid-phase microextraction using polymeric ionic liquid sorbent coatings.$h[electronic resource]
260 $c2018
520 $aIn this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from ?Isabella? and ?BRS Magna? cultivars?the latter was recently introduced by the Brazilian Agricultural Research Corporation ? National Grape & Wine Research Center. In this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from ?Isabella? and ?BRS Magna? cultivars?the latter was recently introduced by the Brazilian Agricultural Research Corporation ? National Grape & Wine Research Center. The structurally tuned SPME coatings were compared to the commercial SPME phases, namely poly(acrylate) (PA) and divinylbenzene/carboxen/poly(dimethylsiloxane) (DVB/CAR/PDMS). The separation, detection and identification of the aroma profileswere obtained using comprehensive two-dimensional gas chromatography mass spectrometry (GC×GC-MS). The best performing PIL-based SPME fiber, namely 1-hexadecyl-3-vinylimidazolium bis[(trifluoromethyl)sulfonyl]imide with 1,12-di(3-vinylimidazolium)dodecane dibis[(trifluoromethyl)sulfonyl]imide incorporated cross-linker supported on an elastic nitinol wire, exhibited superior performance to DVB/CAR/PDMS regarding the average number of extracted peaks and extracted more polar analytes providing additional insight into the aroma profile of ?BRS Magna? wines. Four batches of wine were evaluated, namely ?Isabella? and ?BRS Magna? vintages 2015 and 2016, using highly selective PIL-based SPME coatings and enabled the detection of 350+ peaks. Furthermore, this is the first report evaluating the aroma of ?BRS Magna? wines. A hybrid approach that combined pixel-based Fisher ratio and peak table-based data comparison was used for data handling. This proof-of-concept experiment provided reliable and statistically valid distinction of wines that may guide regulation agencies to create high sample throughput protocols to screen wines exported by Brazilian vintners.
650 $aBiomarkers
650 $aFood chemistry
653 $aFlavor and aroma
653 $aFoodomics
653 $aSensomics
700 1 $aMIRON, L. F. O.
700 1 $aFERREIRA, V. H. C.
700 1 $aNAN, H.
700 1 $aMARQUES, M. O. M.
700 1 $aRITSCHEL, P. S.
700 1 $aZANUS, M. C.
700 1 $aANDERSON, J. L.
700 1 $aPOPPI, R. J.
700 1 $aHANTAO, L. W.
773 $tAnalytical and Bioanalytical Chemistry, online, May 2018.
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Embrapa Uva e Vinho (CNPUV) |
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