| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Tabuleiros Costeiros. |
|
Data corrente: |
16/07/1996 |
|
Data da última atualização: |
04/03/2008 |
|
Autoria: |
PENA, Y. A.; GOMES, A. da S. |
|
Título: |
Variação temporal da resistência mecânica de um solo cultivado com arroz irrigado. |
|
Ano de publicação: |
1995 |
|
Fonte/Imprenta: |
IN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., 1995, Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995. v.4, p. 1931-1933. |
|
Idioma: |
Português |
|
Palavras-Chave: |
Degradação; Nutrientes; Solos. |
|
Thesagro: |
Arroz; Oryza Sativa. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 00582naa a2200181 a 4500
001 1365067
005 2008-03-04
008 1995 bl uuuu u00u1 u #d
100 1 $aPENA, Y. A.
245 $aVariação temporal da resistência mecânica de um solo cultivado com arroz irrigado.
260 $c1995
650 $aArroz
650 $aOryza Sativa
653 $aDegradação
653 $aNutrientes
653 $aSolos
700 1 $aGOMES, A. da S.
773 $tIN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., 1995, Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995.$gv.4, p. 1931-1933.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Tabuleiros Costeiros (CPATC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
04/07/2023 |
|
Data da última atualização: |
04/07/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 3 |
|
Autoria: |
GUEDES, W. N.; BABOS, D. V.; COSTA, V. C.; MORAIS, C. P de; FREITAS, V. S.; STENIO, K.; XAVIER, A. A. P.; BORDUCHI, L. C. L.; VILLAS-BOAS, P. R.; MILORI, D. M. B. P. |
|
Afiliação: |
PAULINO RIBEIRO VILLAS BOAS, CNPDIA; DEBORA MARCONDES BASTOS PEREIRA, CNPDIA. |
|
Título: |
Evaluation of univariate and multivariate calibration strategies for the direct determination of total carbon in soils by laser-induced breakdown spectroscopy: tutorial. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Journal of the Optical Society of America B, v. 40, n. 5, 2023. |
|
Páginas: |
1319 - 1330 |
|
ISSN: |
0740-3224 |
|
DOI: |
https://doi.org/10.1364/JOSAB.482644 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The correct choice of the calibration strategy method is a step that can ensure the accuracy of carbon determination in soils by laser-induced breakdown spectroscopy. In this paper, we evaluate and discuss the intrinsic characteristics of univariate and multivariate calibration strategies in overcoming soil matrix effects and their influence on the magnitude of calibration and prediction error values. The matrix-matching calibration with previous correction of Al spectral interference in the C I line at 193.03 nm was the best strategy of the 13 univariate models evaluated [root-mean-square error of calibration?(RMSEP) = 0.2 wt.% C]. In the multivariate evaluation of the 22 models obtained, the artificial neural network allowed obtaining a lower value of prediction error for C (RMSEP = 0.1 wt.% C) with very good accuracy (98%) for the set samples of validation. The observation of these results was justified considering the advantages and limitations of each calibration strategy explored. |
|
Palavras-Chave: |
Accuracy of carbon; Laser-induced breakdown spectroscopy. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154795/1/P-Evaluation-of-univariate-and-multivariate.pdf
|
|
Marc: |
LEADER 01967naa a2200289 a 4500
001 2154795
005 2023-07-04
008 2023 bl uuuu u00u1 u #d
022 $a0740-3224
024 7 $ahttps://doi.org/10.1364/JOSAB.482644$2DOI
100 1 $aGUEDES, W. N.
245 $aEvaluation of univariate and multivariate calibration strategies for the direct determination of total carbon in soils by laser-induced breakdown spectroscopy$btutorial.$h[electronic resource]
260 $c2023
300 $a1319 - 1330
520 $aThe correct choice of the calibration strategy method is a step that can ensure the accuracy of carbon determination in soils by laser-induced breakdown spectroscopy. In this paper, we evaluate and discuss the intrinsic characteristics of univariate and multivariate calibration strategies in overcoming soil matrix effects and their influence on the magnitude of calibration and prediction error values. The matrix-matching calibration with previous correction of Al spectral interference in the C I line at 193.03 nm was the best strategy of the 13 univariate models evaluated [root-mean-square error of calibration?(RMSEP) = 0.2 wt.% C]. In the multivariate evaluation of the 22 models obtained, the artificial neural network allowed obtaining a lower value of prediction error for C (RMSEP = 0.1 wt.% C) with very good accuracy (98%) for the set samples of validation. The observation of these results was justified considering the advantages and limitations of each calibration strategy explored.
653 $aAccuracy of carbon
653 $aLaser-induced breakdown spectroscopy
700 1 $aBABOS, D. V.
700 1 $aCOSTA, V. C.
700 1 $aMORAIS, C. P de
700 1 $aFREITAS, V. S.
700 1 $aSTENIO, K.
700 1 $aXAVIER, A. A. P.
700 1 $aBORDUCHI, L. C. L.
700 1 $aVILLAS-BOAS, P. R.
700 1 $aMILORI, D. M. B. P.
773 $tJournal of the Optical Society of America B$gv. 40, n. 5, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
