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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
07/06/2022 |
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Data da última atualização: |
23/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PESSOA, T. N.; COOPER, M.; NUNES, M. R.; UTEAU, D.; PETH, S.; VAZ, C. M. P.; LIBARDI, P. L. |
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Afiliação: |
CARLOS MANOEL PEDRO VAZ, CNPDIA. |
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Título: |
2D and 3D techniques to assess the structure and porosity of Oxisols and their correlations with other soil properties. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Catena, v. 210, 105899, 2022. |
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Páginas: |
16 p. |
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ISSN: |
0341-8162 |
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DOI: |
https://doi.org/10.1016/j.catena.2021.105899 |
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Idioma: |
Inglês |
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Conteúdo: |
Structure and porous geometry are dynamic soil parameters that control several soil processes and functions. This study details the differences in the structure of typical Oxisols regarding the clay amount, biological activity, and mineralogy. Combining 2D and 3D image analysis can provide detailed information about the soil structure and porous system. The objectives of this study were: (i) to describe the soil microstructure and degree of microaggregation; (ii) to quantify porosity, soil pore types, and soil pore size distribution using 2D and 3D techniques; and (iii) to better understand the relationship between the porous system and the biological, chemical, mineralogical, and physical properties of the soil. The study considered four Oxisols: Xantic Kandiustox (P1), Rhodic Haplustox (P2), Anionic Acrustox (P3), and Typic Hapludox (P4). The results showed that all Oxisols have some degree of microaggregation. The Rhodic Haplustox (P2) had the most pronounced degree of microaggregation, which reflects the greater biological activity and gibbsite/kaolinite ratio, and lower hematite/ (hematite + goethite) ratio compared to the other Oxisols. The pore types found by 2D analysis were complex pores in P1 and P2 and rounded pores in P3 and P4. The 3D analysis showed that P2 and P3 have a more connected porous system compared to the other Oxisols, evidenced by the lower value of the Euler number. The best connectivity values of the porous system were congruent to improved saturated hydraulic conductivity measured in a separate sample set. MenosStructure and porous geometry are dynamic soil parameters that control several soil processes and functions. This study details the differences in the structure of typical Oxisols regarding the clay amount, biological activity, and mineralogy. Combining 2D and 3D image analysis can provide detailed information about the soil structure and porous system. The objectives of this study were: (i) to describe the soil microstructure and degree of microaggregation; (ii) to quantify porosity, soil pore types, and soil pore size distribution using 2D and 3D techniques; and (iii) to better understand the relationship between the porous system and the biological, chemical, mineralogical, and physical properties of the soil. The study considered four Oxisols: Xantic Kandiustox (P1), Rhodic Haplustox (P2), Anionic Acrustox (P3), and Typic Hapludox (P4). The results showed that all Oxisols have some degree of microaggregation. The Rhodic Haplustox (P2) had the most pronounced degree of microaggregation, which reflects the greater biological activity and gibbsite/kaolinite ratio, and lower hematite/ (hematite + goethite) ratio compared to the other Oxisols. The pore types found by 2D analysis were complex pores in P1 and P2 and rounded pores in P3 and P4. The 3D analysis showed that P2 and P3 have a more connected porous system compared to the other Oxisols, evidenced by the lower value of the Euler number. The best connectivity values of the porous system were congruent to improved satura... Mostrar Tudo |
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Palavras-Chave: |
Micromorphometry; X-ray microtomography. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02308naa a2200253 a 4500
001 2143834
005 2024-01-23
008 2022 bl uuuu u00u1 u #d
022 $a0341-8162
024 7 $ahttps://doi.org/10.1016/j.catena.2021.105899$2DOI
100 1 $aPESSOA, T. N.
245 $a2D and 3D techniques to assess the structure and porosity of Oxisols and their correlations with other soil properties.$h[electronic resource]
260 $c2022
300 $a16 p.
520 $aStructure and porous geometry are dynamic soil parameters that control several soil processes and functions. This study details the differences in the structure of typical Oxisols regarding the clay amount, biological activity, and mineralogy. Combining 2D and 3D image analysis can provide detailed information about the soil structure and porous system. The objectives of this study were: (i) to describe the soil microstructure and degree of microaggregation; (ii) to quantify porosity, soil pore types, and soil pore size distribution using 2D and 3D techniques; and (iii) to better understand the relationship between the porous system and the biological, chemical, mineralogical, and physical properties of the soil. The study considered four Oxisols: Xantic Kandiustox (P1), Rhodic Haplustox (P2), Anionic Acrustox (P3), and Typic Hapludox (P4). The results showed that all Oxisols have some degree of microaggregation. The Rhodic Haplustox (P2) had the most pronounced degree of microaggregation, which reflects the greater biological activity and gibbsite/kaolinite ratio, and lower hematite/ (hematite + goethite) ratio compared to the other Oxisols. The pore types found by 2D analysis were complex pores in P1 and P2 and rounded pores in P3 and P4. The 3D analysis showed that P2 and P3 have a more connected porous system compared to the other Oxisols, evidenced by the lower value of the Euler number. The best connectivity values of the porous system were congruent to improved saturated hydraulic conductivity measured in a separate sample set.
653 $aMicromorphometry
653 $aX-ray microtomography
700 1 $aCOOPER, M.
700 1 $aNUNES, M. R.
700 1 $aUTEAU, D.
700 1 $aPETH, S.
700 1 $aVAZ, C. M. P.
700 1 $aLIBARDI, P. L.
773 $tCatena$gv. 210, 105899, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
30/07/2015 |
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Data da última atualização: |
17/02/2016 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
HORNUNG, P. S.; LAZZAROTTO, S. R. da S.; LAZZAROTTO, M.; SCHNITZLER, E. |
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Afiliação: |
Polyanna Silveira Hornung, Universidade Estadual de Ponta Grossa; Simone Rosa da Silveira Lazzarotto, Universidade Estadual de Ponta Grossa; MARCELO LAZZAROTTO, CNPF; Egon Schnitzler, Universidade Estadual de Ponta Grossa. |
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Título: |
TG-DTA and DSC investigations of ''pinhão'' starch modified by calcium hypochlorite and UV light. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Brazilian Journal of Thermal Analysis, v. 7, p. 109-112, 2015. |
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Descrição Física: |
Disponível na internet. |
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Idioma: |
Inglês |
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Notas: |
Edição dos Anais do 7º Simpósio de Análise Térmica, 2015, Bauru. |
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Conteúdo: |
Starches, when in its native forms, usually do not have the characteristics required for industrial processing. ''Pinhão'', a seed from the Araucaria angustifolia tree, has starch as main presenting as a great alternative source of starch. Samples of native ''pinhão'' starch were treated with standard calcium hypochlorite solutions (0.1, 0.2 and 0.5 mol L-1) and exposed for one hour under UV light. The modification process applied altered the thermal behavior of the ''pinhão'' starch as the TGA-DTA and DSC results presented. |
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Palavras-Chave: |
''pinhão'' starch; Ca(ClO)2; UV light. |
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Thesagro: |
Araucária Angustifólia. |
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Thesaurus NAL: |
oxidation. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127259/1/2015-MarceloL-SIAT-TG-DTA.pdf
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Marc: |
LEADER 01301nam a2200229 a 4500
001 2021028
005 2016-02-17
008 2015 bl uuuu u00u1 u #d
100 1 $aHORNUNG, P. S.
245 $aTG-DTA and DSC investigations of ''pinhão'' starch modified by calcium hypochlorite and UV light.$h[electronic resource]
260 $aBrazilian Journal of Thermal Analysis, v. 7, p. 109-112$c2015
300 $cDisponível na internet.
500 $aEdição dos Anais do 7º Simpósio de Análise Térmica, 2015, Bauru.
520 $aStarches, when in its native forms, usually do not have the characteristics required for industrial processing. ''Pinhão'', a seed from the Araucaria angustifolia tree, has starch as main presenting as a great alternative source of starch. Samples of native ''pinhão'' starch were treated with standard calcium hypochlorite solutions (0.1, 0.2 and 0.5 mol L-1) and exposed for one hour under UV light. The modification process applied altered the thermal behavior of the ''pinhão'' starch as the TGA-DTA and DSC results presented.
650 $aoxidation
650 $aAraucária Angustifólia
653 $a''pinhão'' starch
653 $aCa(ClO)2
653 $aUV light
700 1 $aLAZZAROTTO, S. R. da S.
700 1 $aLAZZAROTTO, M.
700 1 $aSCHNITZLER, E.
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Embrapa Florestas (CNPF) |
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