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EXACT EQUATIONS FOR SOIL PARTICLE-SIZE ANALYSIS BY GAMMA-RAY ATTENUATION
Provedor de dados: 63
Autores: Elias,Elimoel Abraão; Bacchi,Osny Oliveira Santos; Reichardt,Klaus.
Soil particle-size analysis by gamma-ray attenuation was first suggested in 1992 and improved in 1997 by diminishing the measurement time and adapting it for automation. It is here demonstrated that when the mass attenuation coefficient &lt;FONT FACE="Symbol"&gt;m&lt;/font&gt;w and the density Dw are replaced by &lt;FONT FACE="Symbol"&gt;m&lt;/font&gt;s and Ds (where the subscripts w and s stand for water and solution) in the approximate equations used to estimate the concentration of suspended particles, they become exact. The demonstration is based by treating the dispersant and water solution as one single medium, instead of treating them as two media. In this way, six variables are reduced to only three. Physical considerations suggest that the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Granulometry; Soil mechanical analysis; Soil texture; Gamma attenuation.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161999000100014