Planosol soil sample size for computerized tomography measurement of physical parameters

Detalhes bibliográficos
Autor(a) principal: Pedrotti, Alceu
Data de Publicação: 2003
Outros Autores: Pauletto, Eloy Antonio, Crestana, Silvio, Cruvinel, Paulo Estevão, Vaz, Carlos Manoel Pedro, Naime, João de Mendonça, Silva, Alvaro Macedo da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFS
Texto Completo: https://ri.ufs.br/handle/riufs/711
Resumo: A técnica da tomografia computadorizada (TC) permite medir a densidade e a umidade de amostras de solo, constituindo uma importante ferramenta na Ciência do Solo. Este trabalho tem como objetivos descrever os aspectos da adequação do tamanho de amostras de um Planossolo e os procedimentos de avaliação e estudos por análise estatística, empregando-se um minitomógrafo computadorizado de raios gama com fonte de 241Am. O valor do erro atribuído ao equipamento são 0,051 e 0,046 Mg m-3, respectivamente, para os horizontes A e B. O valor teórico da espessura da amostra do Planossolo para uso na técnica de TC com fonte de 241Am é, aproximadamente, 4,0 cm para os horizontes A e B. Já a espessura ideal de amostras é de aproximadamente 6,0 cm, sendo menor para amostras do horizonte B em relação ao A. Obteve-se boa precisão e adaptabilidade no emprego da TC para estudos de Planossolos._________________________________________________________________________________ ABSTRACT: Computerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.
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spelling Pedrotti, AlceuPauletto, Eloy AntonioCrestana, SilvioCruvinel, Paulo EstevãoVaz, Carlos Manoel PedroNaime, João de MendonçaSilva, Alvaro Macedo da2013-09-06T19:22:53Z2013-09-06T19:22:53Z2003-12PEDROTTI, A. et al. Planossol soil sample size for computerized tomography measurement of physical parameters. Scientia Agricola, Piracicaba, v. 60, n. 4, p. 735-740, out./dez. 2003. Disponível em: <http://dx.doi.org/10.1590/S0103-90162003000400019 >. Acesso em: 6 set. 2013.0103-9016https://ri.ufs.br/handle/riufs/711A técnica da tomografia computadorizada (TC) permite medir a densidade e a umidade de amostras de solo, constituindo uma importante ferramenta na Ciência do Solo. Este trabalho tem como objetivos descrever os aspectos da adequação do tamanho de amostras de um Planossolo e os procedimentos de avaliação e estudos por análise estatística, empregando-se um minitomógrafo computadorizado de raios gama com fonte de 241Am. O valor do erro atribuído ao equipamento são 0,051 e 0,046 Mg m-3, respectivamente, para os horizontes A e B. O valor teórico da espessura da amostra do Planossolo para uso na técnica de TC com fonte de 241Am é, aproximadamente, 4,0 cm para os horizontes A e B. Já a espessura ideal de amostras é de aproximadamente 6,0 cm, sendo menor para amostras do horizonte B em relação ao A. Obteve-se boa precisão e adaptabilidade no emprego da TC para estudos de Planossolos._________________________________________________________________________________ ABSTRACT: Computerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.SoloPlanossoloDensidade do soloUmidade do soloPlanosol soil sample size for computerized tomography measurement of physical parametersTamanho de amostras para a determinação de parâmetros físicos em planossolo por tomografia computadorizadainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFSinstname:Universidade Federal de Sergipe (UFS)instacron:UFSinfo:eu-repo/semantics/openAccessTHUMBNAILPlanosolSoilSample.pdf.jpgPlanosolSoilSample.pdf.jpgGenerated Thumbnailimage/jpeg1890https://ri.ufs.br/jspui/bitstream/riufs/711/4/PlanosolSoilSample.pdf.jpg66e87ef78de6907c6f51923c4530cf1bMD54ORIGINALPlanosolSoilSample.pdfPlanosolSoilSample.pdfapplication/pdf205021https://ri.ufs.br/jspui/bitstream/riufs/711/1/PlanosolSoilSample.pdf3d536c4506c65fa1fff62cd5ff33873cMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://ri.ufs.br/jspui/bitstream/riufs/711/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52TEXTPlanosolSoilSample.pdf.txtPlanosolSoilSample.pdf.txtExtracted texttext/plain25932https://ri.ufs.br/jspui/bitstream/riufs/711/3/PlanosolSoilSample.pdf.txt066a6507591bff15bae7485c409c36c5MD53riufs/7112013-09-07 02:00:08.749oai:ufs.br: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Repositório InstitucionalPUBhttps://ri.ufs.br/oai/requestrepositorio@academico.ufs.bropendoar:2013-09-07T05:00:08Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS)false
dc.title.pt_BR.fl_str_mv Planosol soil sample size for computerized tomography measurement of physical parameters
dc.title.alternative.pt_BR.fl_str_mv Tamanho de amostras para a determinação de parâmetros físicos em planossolo por tomografia computadorizada
title Planosol soil sample size for computerized tomography measurement of physical parameters
spellingShingle Planosol soil sample size for computerized tomography measurement of physical parameters
Pedrotti, Alceu
Solo
Planossolo
Densidade do solo
Umidade do solo
title_short Planosol soil sample size for computerized tomography measurement of physical parameters
title_full Planosol soil sample size for computerized tomography measurement of physical parameters
title_fullStr Planosol soil sample size for computerized tomography measurement of physical parameters
title_full_unstemmed Planosol soil sample size for computerized tomography measurement of physical parameters
title_sort Planosol soil sample size for computerized tomography measurement of physical parameters
author Pedrotti, Alceu
author_facet Pedrotti, Alceu
Pauletto, Eloy Antonio
Crestana, Silvio
Cruvinel, Paulo Estevão
Vaz, Carlos Manoel Pedro
Naime, João de Mendonça
Silva, Alvaro Macedo da
author_role author
author2 Pauletto, Eloy Antonio
Crestana, Silvio
Cruvinel, Paulo Estevão
Vaz, Carlos Manoel Pedro
Naime, João de Mendonça
Silva, Alvaro Macedo da
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pedrotti, Alceu
Pauletto, Eloy Antonio
Crestana, Silvio
Cruvinel, Paulo Estevão
Vaz, Carlos Manoel Pedro
Naime, João de Mendonça
Silva, Alvaro Macedo da
dc.subject.por.fl_str_mv Solo
Planossolo
Densidade do solo
Umidade do solo
topic Solo
Planossolo
Densidade do solo
Umidade do solo
description A técnica da tomografia computadorizada (TC) permite medir a densidade e a umidade de amostras de solo, constituindo uma importante ferramenta na Ciência do Solo. Este trabalho tem como objetivos descrever os aspectos da adequação do tamanho de amostras de um Planossolo e os procedimentos de avaliação e estudos por análise estatística, empregando-se um minitomógrafo computadorizado de raios gama com fonte de 241Am. O valor do erro atribuído ao equipamento são 0,051 e 0,046 Mg m-3, respectivamente, para os horizontes A e B. O valor teórico da espessura da amostra do Planossolo para uso na técnica de TC com fonte de 241Am é, aproximadamente, 4,0 cm para os horizontes A e B. Já a espessura ideal de amostras é de aproximadamente 6,0 cm, sendo menor para amostras do horizonte B em relação ao A. Obteve-se boa precisão e adaptabilidade no emprego da TC para estudos de Planossolos._________________________________________________________________________________ ABSTRACT: Computerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.
publishDate 2003
dc.date.issued.fl_str_mv 2003-12
dc.date.accessioned.fl_str_mv 2013-09-06T19:22:53Z
dc.date.available.fl_str_mv 2013-09-06T19:22:53Z
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dc.identifier.citation.fl_str_mv PEDROTTI, A. et al. Planossol soil sample size for computerized tomography measurement of physical parameters. Scientia Agricola, Piracicaba, v. 60, n. 4, p. 735-740, out./dez. 2003. Disponível em: <http://dx.doi.org/10.1590/S0103-90162003000400019 >. Acesso em: 6 set. 2013.
dc.identifier.uri.fl_str_mv https://ri.ufs.br/handle/riufs/711
dc.identifier.issn.none.fl_str_mv 0103-9016
identifier_str_mv PEDROTTI, A. et al. Planossol soil sample size for computerized tomography measurement of physical parameters. Scientia Agricola, Piracicaba, v. 60, n. 4, p. 735-740, out./dez. 2003. Disponível em: <http://dx.doi.org/10.1590/S0103-90162003000400019 >. Acesso em: 6 set. 2013.
0103-9016
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