2008
DOI: 10.1590/s0006-87052008000200032
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Utilização de função dielétrica para estimar o teor de água em sementes de café

Abstract: RESUMOO interesse na utilização das propriedades dielétricas de produtos agrícolas granulares tem aumentado devido ao seu potencial para aplicação em novas tecnologias, como a medição contínua do teor de água de grãos e sementes em operações que utilizam o controle automático de processos, como a colheita, secagem e aeração. O procedimento mais eficaz para diminuir os erros que as alterações no fluxo de massa do produto provocam na estimativa do seu teor de água é a derivação de modelos que empregam a permissi… Show more

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Cited by 7 publications
(2 citation statements)
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“…Future studies could consider alternatives relationships that minimize the bulk density effect or perform nonlinear modeling of the data to compensate for this dependence. [22] As an alternative analytical approach, the dielectric spectroscopy approach losses the resonant nature of other approaches that have proven to be effective for this type of coffee studies. [30][31][32][33][34] One of the most notable advantages of this approach is that the samples do not require of any sort of previous handling and that the wide frequency range offers the possibility of exploring several behaviors.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Future studies could consider alternatives relationships that minimize the bulk density effect or perform nonlinear modeling of the data to compensate for this dependence. [22] As an alternative analytical approach, the dielectric spectroscopy approach losses the resonant nature of other approaches that have proven to be effective for this type of coffee studies. [30][31][32][33][34] One of the most notable advantages of this approach is that the samples do not require of any sort of previous handling and that the wide frequency range offers the possibility of exploring several behaviors.…”
Section: Resultsmentioning
confidence: 99%
“…Working with both the dielectric constant and the loss factor might be misleading as both features depend on the bulk density of the samples. [22] Meyer and Schilz developed a bulk density independent relationship, which is frequency dependent, and presented good results for wheat and barley moisture content characterization. The Meyer and Schilz coefficient (2).…”
Section: Discussionmentioning
confidence: 99%