Zobrazeno 1 - 10 of 17 pro vyhledávání: '"área superficial específica"'
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Akademický článek
CHARACTERIZATION AND CLASSIFICATION OF FLOODPLAIN SOILS IN THE PORTO ALEGRE METROPOLITAN REGION, RS, BRAZIL
Autor: Luís de França da Silva Neto, Alberto Vasconcellos Inda, Paulo César Do Nascimento, Elvio Giasson, Catiline Schmitt, Nilton Curi
Publikováno v: Ciência e Agrotecnologia, Vol 39, Iss 5, Pp 423-434 (2015)
ABSTRACTIn the Porto Alegre metropolitan region (PAMR) there are a significant proportion of floodplain soils, mainly Planosols and Gleysols, in relation to upland soils. This study aimed to evaluate the morphological, chemical and physical character
Externí odkaz: https://doaj.org/article/4b9da0f229834d938b7b4f78ecaf9e5a
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3
Akademický článek
Production and characterization of water-steam activated carbons made from sugarcane bagasse and molasses pellets=Produção e caracterização de carvões ativados com vapor de água, originados de pellets de bagaço e melaço de cana-de-açúcar
Autor: Rafael Ferro, Maria Luiza Melchert de Carvalho e Silva, Nehemias Curvelo Pereira, José Carlos de Sousa
Publikováno v: Acta Scientiarum: Technology, Vol 34, Iss 1, Pp 13-20 (2012)
Pellets made from sugarcane bagasse and molasses in weight proportions 1.0:0.5 and 1.0:1.0 (wt%) were water-steam activated during 1, 2 and 4h, at 850°C, by two processes, namely, (1) pyrolysis and activation in two different assays or (2) pyrolysis
Externí odkaz: https://doaj.org/article/a1d65059ce5b46aba0583a09d165b1ff
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4
Akademický článek
Cristallochemical characterization of synthetic Zn-substituted maghemites (g-Fe2-xZn xO3) Caracterização cristaloquímica de maghemitas sintéticas substituídas com zinco (g-Fe2-xZn xO3)
Autor: Marcelo Augusto Batista, Antonio Carlos Saraiva da Costa, Ivan Granemann de Souza Junior, Jerry Marshal Bigham
Publikováno v: Revista Brasileira de Ciência do Solo, Vol 32, Iss 2, Pp 561-568 (2008)
Maghemite (g-Fe2O3) is the most usually found ferrimagnetic oxide in red basalt-derived soils. The variable degrees of ionic substitution of Fe3+ for different metals (e.g. Ti4+, Al3+, Mg2+, Zn2+, and Mn2+) and non-metals in the maghemite structure i
Externí odkaz: https://doaj.org/article/c089a0e6ebcc4b9da937cefa7acef344
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5
Akademický článek
Relações entre a substituição isomórfica de Fe por Al e as características químicas e mineralógicas de hematitas sintéticas
Autor: J. A. Sambatti, A. C. S. Costa, A. S. Muniz, E. Sengik, I. G. Souza Junior, J. M. Bigham
Publikováno v: Revista Brasileira de Ciência do Solo, Vol 26, Iss 1, Pp 117-124 (2002)
Foram sintetizadas hematitas com diferentes graus de substituição isomórfica (SI) de Fe por Al até um máximo de 16Almol%. Os minerais foram caracterizados por difratometria de raios-X, análise química total, extração de ferro e alumínio sol
Externí odkaz: https://doaj.org/article/5c257da072dd4ad1833e86be7e220ff6
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6
Propriedades físicas de un Argissolo después de 17 años de forestación con Eucalyptus spp
Autor: Chaves, Estéfane, Santos, Caroline Valverde dos, Ramos, Priscila Vogelei, Inda Junior, Alberto Vasconcellos, Caner, Laurent
Publikováno v: Research, Society and Development; Vol. 10 No. 5; e58610514424
Research, Society and Development; Vol. 10 Núm. 5; e58610514424
Research, Society and Development; v. 10 n. 5; e58610514424
Research, Society and Development
Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
The significant expansion of the forestry sector in Brazil has given evidence to studies that direct its research actions towards the preservation and rational use of natural resources. Research has shown that changes in land use alter its pedoenviro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::33cb34ba06bbfd049a8b54f873667829
https://rsdjournal.org/index.php/rsd/article/view/14424
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7
Evaluation of the effect of the molecular weight of the sacrificial agents in the interaction of the superplasticizer admixtures with the clays present in cement-based mixes
Autor: Gómez Alvarez, Ana Cristina
Publikováno v: Repositorio UN
Universidad Nacional de Colombia
instacron:Universidad Nacional de Colombia
ilustraciones, diagramas, tablas La baja compatibilidad entre los aditivos superplastificantes base policarboxilato (PCE) y los agregados con trazas de arcilla, se ha considerado uno de los retos a resolver en la producción de concreto en los últim
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::53b5a5ee29c1c79962756c2a745690e3
https://repositorio.unal.edu.co/handle/unal/81248
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8
Caracterização e classificação de solos de várzea na região metropolitana de Porto Alegre, RS
Autor: Paulo César do Nascimento, Elvio Giasson, Alberto Vasconcellos Inda, Nilton Curi, Luís de França da Silva Neto, Catiline Schmitt
Publikováno v: Ciência e Agrotecnologia, Vol 39, Iss 5, Pp 423-434 (2015)
Ciência e Agrotecnologia v.39 n.5 2015
Ciência e Agrotecnologia
Universidade Federal de Lavras (UFLA)
instacron:UFLA
Repositório Institucional da UFRGS
Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice)
Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
Ciência e Agrotecnologia, Volume: 39, Issue: 5, Pages: 423-434, Published: OCT 2015
In the Porto Alegre metropolitan region (PAMR) there are a significant proportion of floodplain soils, mainly Planosols and Gleysols, in relation to upland soils. This study aimed to evaluate the morphological, chemical and physical characteristics,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a95559207d8b41cd4bd655bb4377f27
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000500423&lng=en&tlng=en
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9
Dissertation/ Thesis
Desenvolvimento de pedotransferência física-empírica para Modelagem da retenção de água no solo
Autor: Mulazzani, Rodrigo Pivoto
Publikováno v: Repositório Institucional da UFSMUniversidade Federal de Santa MariaUFSM.
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Soil water retention stems from the action of attractive forces manifested by adsorption and capillary phenomena. Matric potential (ψ) expresses the soil water retention energy, wh
Externí odkaz: http://repositorio.ufsm.br/handle/1/5633
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10
Development of physicoempirical pedotransfer to model soil Water retention
Autor: Mulazzani, Rodrigo Pivoto
Publikováno v: Biblioteca Digital de Teses e Dissertações do UFSM
Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Soil water retention stems from the action of attractive forces manifested by adsorption and capillary phenomena. Matric potential (ψ) expresses the soil water retention energy, which v
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______3056::c821f1a40b940d8de7d7a991f00c3954
http://repositorio.ufsm.br/handle/1/5633
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