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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
14/04/2020 |
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Data da última atualização: |
11/12/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MONARETTO, T.; MONTRAZI, E. T.; MORAES, T. B.; SOUZA, A. A.; RONDEAU-MOURO, C.; COLNAGO, L. A. |
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Afiliação: |
LUIZ ALBERTO COLNAGO, CNPDIA. |
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Título: |
Using T1 as a direct detection dimension in two-dimensional time-domain NMR experiments using CWFP regime. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Magnetic Resonance, n. 311, a. 106666, 2020. |
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ISSN: |
1090-7877 |
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DOI: |
10.1016/j.jmr.2019.106666 |
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Idioma: |
Inglês |
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Conteúdo: |
The transverse relaxation time (T 2), measured with Carr-Purcell-Meiboom-Gill (CPMG) sequence, has been widely used to obtain the direct dimension data in two-dimension time domain NMR (2D TDNMR). In this paper we are demonstrating that Continuous Wave Free Precession sequence, with low flip angle (CWFP-T1 ), can be an alternative to CPMG as direct detection dimension. CWFP-T 1 is a fast single shot sequence, like CPMG, and yields an exponential signal governed predominantly by the longitudinal (T1 ) relaxation time. To obtain the correlations between T1 and T2 (T 1-T 2 maps) we are proposing the use of CPMG-CWFP-T 1 pulse sequence. In this sequence CPMG encodes T 2 information (indirect dimension) that modulates the CWFP-T 1 (direct dimension) signal amplitudes. CPMG-CWFP-T 1 experiments were compared with classical 2D sequences such as Saturation-Recovery-CPMG (SR-CPMG) and InversionRecovery-CPMG (IR-CPMG) sequence and yields similar results in phantom sample. The experimental time for the 2D sequences, using single scan, shows that SR-CPMG #20; CPMG-CWFP-T 1 < IR-CPMG.Experimental and simulated results demonstrated that 2D-CPMG-CWFP-T 1 maps have higher resolution in T1 dimension than the techniques that uses CPMG as direct dimension. CPMG-CWFP-T1 sequence was also applied to study beef samples, and 2D maps showed higher resolution in the two fat signals than the classical IR-CPMG method. |
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Palavras-Chave: |
2 D TD NMR pulse sequence; 2D Laplace transform; CPMG CWFP T1; T1 T2 maps. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02188naa a2200253 a 4500
001 2121653
005 2024-12-11
008 2020 bl uuuu u00u1 u #d
022 $a1090-7877
024 7 $a10.1016/j.jmr.2019.106666$2DOI
100 1 $aMONARETTO, T.
245 $aUsing T1 as a direct detection dimension in two-dimensional time-domain NMR experiments using CWFP regime.$h[electronic resource]
260 $c2020
520 $aThe transverse relaxation time (T 2), measured with Carr-Purcell-Meiboom-Gill (CPMG) sequence, has been widely used to obtain the direct dimension data in two-dimension time domain NMR (2D TDNMR). In this paper we are demonstrating that Continuous Wave Free Precession sequence, with low flip angle (CWFP-T1 ), can be an alternative to CPMG as direct detection dimension. CWFP-T 1 is a fast single shot sequence, like CPMG, and yields an exponential signal governed predominantly by the longitudinal (T1 ) relaxation time. To obtain the correlations between T1 and T2 (T 1-T 2 maps) we are proposing the use of CPMG-CWFP-T 1 pulse sequence. In this sequence CPMG encodes T 2 information (indirect dimension) that modulates the CWFP-T 1 (direct dimension) signal amplitudes. CPMG-CWFP-T 1 experiments were compared with classical 2D sequences such as Saturation-Recovery-CPMG (SR-CPMG) and InversionRecovery-CPMG (IR-CPMG) sequence and yields similar results in phantom sample. The experimental time for the 2D sequences, using single scan, shows that SR-CPMG #20; CPMG-CWFP-T 1 < IR-CPMG.Experimental and simulated results demonstrated that 2D-CPMG-CWFP-T 1 maps have higher resolution in T1 dimension than the techniques that uses CPMG as direct dimension. CPMG-CWFP-T1 sequence was also applied to study beef samples, and 2D maps showed higher resolution in the two fat signals than the classical IR-CPMG method.
653 $a2 D TD NMR pulse sequence
653 $a2D Laplace transform
653 $aCPMG CWFP T1
653 $aT1 T2 maps
700 1 $aMONTRAZI, E. T.
700 1 $aMORAES, T. B.
700 1 $aSOUZA, A. A.
700 1 $aRONDEAU-MOURO, C.
700 1 $aCOLNAGO, L. A.
773 $tJournal of Magnetic Resonance$gn. 311, a. 106666, 2020.
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| 6. |  | FARIA, M. R. de; COSTA, L. S. A. S.; FERREIRA, T. C.; PACIFICO, M. G.; SILVA, L. G.; BETTIOL, W. Avaliação de vigor e fisiologia de sementes de trigo tratadas com Bacillus spp. Summa Phytopathologica, v. 44, fev. 2018. Suplemento. Edição dos resumos do 42º Congresso Paulista de Fitopatologia, 2018, Marília. Inovações Tecnológicas na Fitopatologia. Resumo 0175.| Tipo: Resumo em Anais de Congresso |
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| 7. | | PACIFICO, M. G.; SILVA, L. G.; FARIA, M. R. de; FERREIRA, T. C.; ECKSTEIN, B.; BETTIOL, W. Antagonismo in vitro de Bacillus spp. a Fusarium oxysporum f. sp. vasinfectum. Summa Phytopathologica, v. 44, fev. 2018. Suplemento. Edição dos resumos do 42º Congresso Paulista de Fitopatologia, 2018, Marília. Inovações Tecnológicas na Fitopatologia. Resumo 0178.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Meio Ambiente; Embrapa Recursos Genéticos e Biotecnologia. |
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| 8. | | FERREIRA, T. C.; LAGO, L. do; SILVA, L. G.; PACIFICO, M. G.; FARIA, M. R. de; BETTIOL, W. Potencial de Bacillus spp. em promover o crescimento e controlar Fusarium verticillioides em milho. Summa Phytopathologica, Botucatu, v. 47, n. 4, p. 195-203, 2021.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Meio Ambiente. |
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| 9. | | BETTIOL, W.; PINTO, Z. V.; SILVA, J. C.; FORNER, C.; FARIA, M. R. de; PACIFICO, M. G.; COSTA, L. S. A. S. Produtos comerciais à base de Trichoderma. In: MEYER, M. C.; MAZARO, S. M.; SILVA, J. C. da (Ed.). Trichoderma: uso na agricultura. Brasília, DF: Embrapa, 2019. pt. 1. cap. 2. p. 45-160.| Tipo: Capítulo em Livro Técnico-Científico |
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