Planosol soil sample size for computerized tomography measurement of physical parameters

Pedrotti, Alceu; Pauletto, Eloy Antônio; Crestana, Sı́lvio; Cruvinel, P. E.; Vaz, C. M. P.; Naime, J. de M.; Silva, Alvaro Macedo da

doi:10.1590/s0103-90162003000400019

Cited by 17 publications

(8 citation statements)

References 8 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This is a reasonable assumption. Pedrotti et al (2003) found a highly linear relation (r 2 = 0.998) between the attenuation coefficient of a range of materials (soils, water aluminium) and what they term tomographic units. These units relate to the values used in image reconstruction -in our case greyscale values, in others Hounsfield Units (HU).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Investigating microbial micro-habitat structure using X-ray computed tomography

Nunan¹,

Ritz²,

Rivers³

et al. 2006

Geoderma

113

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

“…These units relate to the values used in image reconstruction -in our case greyscale values, in others Hounsfield Units (HU). (Pedrotti et al, 2003) provide a useful discussion of the impact of sample size for CT measurements.…”

Section: Resultsmentioning

confidence: 99%

Investigating microbial micro-habitat structure using X-ray computed tomography

Nunan¹,

Ritz²,

Rivers³

et al. 2006

Geoderma

113

View full text Add to dashboard Cite

“…Pedrotti with coauthors [38] analyzed the bulk density . mw w ms s μ = μ ρ θ + μ ρ distribution and showed that the optimum size of a representative sample from a genetic horizon should be about 4-6 cm.…”

Section: Tomographic Methodsmentioning

confidence: 99%

Tomographic method of studying soil pore space: Current perspectives and results for some Russian soils

2012

View full text Add to dashboard Cite

The methods and results of tomographic soil studies are discussed. A brief history of the develop ment of the tomographic method and its application in soil science are described, and the major results obtained with the use of this method are outlined. An experience of the application of X ray microtomogra phy for studying the structure of undisturbed samples of some Russian soils is also considered. Three dimen sional images of soil aggregates and soil pore space with a resolution of 15.8 µm have been obtained for the upper horizons of gray forest and soddy podzolic soils. On the basis of these data, the merits and demerits of the tomographic method in comparison with the traditional method for studying soil pedality and pore space in thin sections are discussed. Certain advantages of the tomographic method provide good possibilities to study soil processes at a qualitatively new level. Priority directions of the development of tomographic studies in soil science are outlined.

show abstract

“…A Ds foi determinada pelo Método da Tomografia Computadorizada de Raios Gama Vaz et al, 1992;Macedo et al, 2002;Pedrotti et al, 2003), utilizando-se o Minitomógrafo do Laboratório de Tomografia de Solos da FAEM -UFPel. Realizou-se uma varredura completa em cada amostra, no plano que passa pelo seu eixo longitudinal, resultando numa matriz de dados (32 x 32 pixels) de fótons emergentes.…”

Section: Methodsunclassified