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| 48. |  | MACEDO, A.; TORRE NETO, A.; CRUVINEL, P. E.; CRESTANA, S. Projeto, construção e uso de um tomógrafo de resolução micrométrica para aplicações em ciências do solo. In: CONGRESSO LATINO AMERICANO DE CIENCIA DO SOLO, 13., ago. 1996, Aguas de Lindoia, SP. Solo suelo 96. Campinas: Sociedade Brasileira de Ciencia do Solo, 1996. 5 p. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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| 53. | | MACEDO, A.; TORRE NETO, A.; CRUVINEL, P. E.; CRESTANA, S. Tomógrafo de resolução micrométrica para aplicações em ciências do solo e do ambiente. In: SIMPOSIO DE CIENCIAS DA ENGENHARIA AMBIENTAL, 1.; SIMPOSIO DO CURSO DE CIENCIAS DA ENGENHARIA AMBIENTAL, 3., ago. 1996, Sao Carlos, SP. Anais... Sao Carlos: USP-EESC-CRHEA, 1996. p. 156-158.| Biblioteca(s): Embrapa Instrumentação. |
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| 54. | | SOUSA, D. N. de; MILAGRES, C. S. F.; COSTA, M. S.; MACEDO, A. dos S. Entre o social e o econômico, uma gestão cooperativa é possível? Estudo sobre as estratégias de comunicação nas cooperativas agropecuárias. Revista de Extensão e Estudos Rurais, Viçosa, MG, v. 6, n. 2, p. 62-80, jul./dez. 2017.| Biblioteca(s): Embrapa Pesca e Aquicultura. |
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| 60. | | VAZ, C. M. P.; HOPMANS, J. W.; MACEDO, A.; BASSOI, L. H.; WILDENSCHILD, D. Soil water retention measurements using a combined tensiometer-coiled time domain reflectometry probe. Soil Science Society of America Journal, Madison, v.66, n.6, p. 1752-1759, 2002.| Biblioteca(s): Embrapa Instrumentação. |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
28/04/2003 |
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Data da última atualização: |
03/08/2009 |
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Autoria: |
APPOLONI, C. R.; MACEDO, A.; FERNANDES, C. P.; PHILIPPI, P. C. |
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Afiliação: |
UEL-Departamento de Física, Londrina, PR; Embrapa Instrumentação Agropecuária, São Carlos, SP; UFSC-LMPT, Departamento de Engenharia Mecânica, Florianópolis, SC. |
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Título: |
Characterization of porous microstructure by x-ray microtomography |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
X-Ray Spectrometry, New York, v. 31, n.3, p. 124-127, May-Jun. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Knowledge of the porous structure of amorphous material is of fundamental importance in calculating geometric parameters suchas total porosity, pore size distribution and physical parameters related to fluid flow inside void space. This work involved the measurement of microstructural parameters of petroleum reservoir rocks and porous ceramic filters. Microtomographic measuremets of samples were performed by employing an X-ray tube. Bremsstrahlung radiation was fitered in transmission mode with an Sn filter at 58.5 and 28 keV. The beam width was about 80 mi at the sample position center. Images were analyzed in two ways. In the first method, transepts of the images were analyzed in order to calcutate the total porosity by means of the average particle and media linear attenuation coefficients. In the second method, images were studied using image analysis software, named Imago, allowing the calculation of total porosity and pore size distribution. The total measured porosity of filter C90 was 73.7, 71.1, 74.4 and 71.5% using the Archimeds method, ismple gamma-ray transmission, transept and image analysis of the microtomography at 28.3 keV, respectively. Measured total porosity for one of the sandstones was 23.23, 24,70, 23.43, 29.68, 29.65 and 27.80% using Hg and gas porosimetry, the Archimeds method, simple gamma-ray transmission and transept analysis of the microtomography at 58.5 and 28.2 keV, respectively. |
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Palavras-Chave: |
Microestrutura; Microtomografia; Petroleum reservois rocks; Porous ceramic filters; porous structure; Raio-X. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02085naa a2200229 a 4500
001 1024631
005 2009-08-03
008 2002 bl --- 0-- u #d
100 1 $aAPPOLONI, C. R.
245 $aCharacterization of porous microstructure by x-ray microtomography
260 $c2002
520 $aKnowledge of the porous structure of amorphous material is of fundamental importance in calculating geometric parameters suchas total porosity, pore size distribution and physical parameters related to fluid flow inside void space. This work involved the measurement of microstructural parameters of petroleum reservoir rocks and porous ceramic filters. Microtomographic measuremets of samples were performed by employing an X-ray tube. Bremsstrahlung radiation was fitered in transmission mode with an Sn filter at 58.5 and 28 keV. The beam width was about 80 mi at the sample position center. Images were analyzed in two ways. In the first method, transepts of the images were analyzed in order to calcutate the total porosity by means of the average particle and media linear attenuation coefficients. In the second method, images were studied using image analysis software, named Imago, allowing the calculation of total porosity and pore size distribution. The total measured porosity of filter C90 was 73.7, 71.1, 74.4 and 71.5% using the Archimeds method, ismple gamma-ray transmission, transept and image analysis of the microtomography at 28.3 keV, respectively. Measured total porosity for one of the sandstones was 23.23, 24,70, 23.43, 29.68, 29.65 and 27.80% using Hg and gas porosimetry, the Archimeds method, simple gamma-ray transmission and transept analysis of the microtomography at 58.5 and 28.2 keV, respectively.
653 $aMicroestrutura
653 $aMicrotomografia
653 $aPetroleum reservois rocks
653 $aPorous ceramic filters
653 $aporous structure
653 $aRaio-X
700 1 $aMACEDO, A.
700 1 $aFERNANDES, C. P.
700 1 $aPHILIPPI, P. C.
773 $tX-Ray Spectrometry, New York$gv. 31, n.3, p. 124-127, May-Jun. 2002.
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