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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
02/01/2019 |
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Data da última atualização: |
25/02/2019 |
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Autoria: |
BONETTI, J. de A.; PAULINO, H. B.; SOUZA, E. D. de; CARNEIRO, M. A. C.; CAETANO, J. O. |
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Afiliação: |
João de Andrade Bonetti, Instituto Federal do Paraná; Helder Barbosa Paulino, Universidade Federal do Triângulo Mineiro; Edicarlos Damacena de Souza, Universidade Federal de Rondonópolis/Instituto de Ciências Agrárias e Tecnológicas; Marco Aurélio Carbone Carneiro, Universidade Federal de Lavras - UFLA/Departamento de Ciência do Solo; Jeander Oliveira Caetano, Centro Universitário UNA. |
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Título: |
Soil physical and biological properties in an integrated crop-livestock system in the Brazilian Cerrado. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 53, n. 11, p. 1239-1247, Nov. 2018. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Propriedades físicas e biólogicas do solo em um sistema de integração lavoura-pecuária no Cerrado brasileiro. |
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Conteúdo: |
The objective of this work was to evaluate the soil physical and biological properties in an integrated crop-livestock system (ICLS), with or without cattle grazing, in different seasons. The experiment was carried out in the Cerrado biome, in Brazil, in a Rhodic Eutrudox. The treatments consisted of grazing areas (Urochloa ruziziensis) at 0.25, 0.35, and 0.45 m heights (with soybean cultivation after grazing) and of nongrazed areas. The ICLS had no negative effects on soil bulk density, total porosity, macroporosity, and microporosity. After ICLS implementation, the values of soil bulk density decreased, and those of soil macroporosity increased, in the grazed and nongrazed areas. However, after three years, bulk density and macroporosity were reestablished to values similar to those before ICLS implementation. Soil penetration resistance was higher in the ICLS, mainly at 0.00?0.05 m soil depth. After four years, ICLS promoted the increase of microbial biomass C and N and the reduction of the metabolic quotient. The microbial biomass carbon and the metabolic quotient were related to the weighted mean diameter. ICLS benefits to soil physical and biological properties are associated with adequate ICLS implementation, adequate grazing height (0.35 m), and maintenance of soil cover. |
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Palavras-Chave: |
Agregação do solo; Animal traffic; Biomassa microbiana do solo; Qualidade do solo; Tráfego animal. |
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Thesagro: |
Compactação do Solo. |
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Thesaurus Nal: |
Microbial biomass; No-tillage; Soil aggregation; Soil compaction; Soil microorganisms; Soil quality. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/189573/1/Soil-physical-and-biological-properties.pdf
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Marc: |
LEADER 02432naa a2200325 a 4500
001 2102758
005 2019-02-25
008 2018 bl uuuu u00u1 u #d
100 1 $aBONETTI, J. de A.
245 $aSoil physical and biological properties in an integrated crop-livestock system in the Brazilian Cerrado.$h[electronic resource]
260 $c2018
500 $aTítulo em português: Propriedades físicas e biólogicas do solo em um sistema de integração lavoura-pecuária no Cerrado brasileiro.
520 $aThe objective of this work was to evaluate the soil physical and biological properties in an integrated crop-livestock system (ICLS), with or without cattle grazing, in different seasons. The experiment was carried out in the Cerrado biome, in Brazil, in a Rhodic Eutrudox. The treatments consisted of grazing areas (Urochloa ruziziensis) at 0.25, 0.35, and 0.45 m heights (with soybean cultivation after grazing) and of nongrazed areas. The ICLS had no negative effects on soil bulk density, total porosity, macroporosity, and microporosity. After ICLS implementation, the values of soil bulk density decreased, and those of soil macroporosity increased, in the grazed and nongrazed areas. However, after three years, bulk density and macroporosity were reestablished to values similar to those before ICLS implementation. Soil penetration resistance was higher in the ICLS, mainly at 0.00?0.05 m soil depth. After four years, ICLS promoted the increase of microbial biomass C and N and the reduction of the metabolic quotient. The microbial biomass carbon and the metabolic quotient were related to the weighted mean diameter. ICLS benefits to soil physical and biological properties are associated with adequate ICLS implementation, adequate grazing height (0.35 m), and maintenance of soil cover.
650 $aMicrobial biomass
650 $aNo-tillage
650 $aSoil aggregation
650 $aSoil compaction
650 $aSoil microorganisms
650 $aSoil quality
650 $aCompactação do Solo
653 $aAgregação do solo
653 $aAnimal traffic
653 $aBiomassa microbiana do solo
653 $aQualidade do solo
653 $aTráfego animal
700 1 $aPAULINO, H. B.
700 1 $aSOUZA, E. D. de
700 1 $aCARNEIRO, M. A. C.
700 1 $aCAETANO, J. O.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 53, n. 11, p. 1239-1247, Nov. 2018.
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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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: |
26/07/2023 |
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Data da última atualização: |
15/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 4 |
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Autoria: |
FACURE, M. H. M.; MERCANTE, L. A.; CORREA, D. S. |
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Afiliação: |
DANIEL SOUZA CORREA, CNPDIA. |
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Título: |
Polyacrylonitrile/Reduced Graphene Oxide Free-Standing Nanofibrous Membranes for Detecting Endocrine Disruptors. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
ACS Applied Nano Materials, v. 5, 2022. |
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Páginas: |
6376–6384 |
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DOI: |
https://doi.org/10.1021/acsanm.2c00484 |
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Idioma: |
Inglês |
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Conteúdo: |
Endocrine-disrupting chemicals (EDCs) are emerging pollutants whose uncontrolled release in natural aquatic environments can pose risks to human and animal health. In this scenario, the development of simple, low-cost, and sensitive methods to detect trace amounts of EDCs in the environment is highly sought. In this work, a nanofiber-based sensor was fabricated by functionalizing a polyacrylonitrile (PAN) electrospun nanofibrous membrane with reduced graphene oxide (rGO) to be used as a flexible and free-standing electrode to detect EDCs through electrical impedance measurements. The rGO was obtained from graphene oxide using a hydrothermal route, while the PAN/rGO composite membrane was prepared through vacuum filtration. The rGO provided high electrical conductivity to the membrane, which presented a good performance in the detection of endocrine hormones. The electrical resistance variation enabled the detection of 17αethinylestradiol (EE2) in a linear range between 10−5 and 10−11 mol L−1 . Moreover, by using the principal component analysis (PCA) for data treatment, the sensor was able to discriminate EE2, estrone, estradiol, and progesterone at 100 pmol L−1 in real river water samples. These results open up the possibility to fabricate in a simple way functionalized nanofibrous membranes to be used as sensing material for the detection of varied analytes with high sensitivity and low cost. |
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Palavras-Chave: |
Electrical impedance spectroscopy; Electrospinning; Electrospun nanofibers; Impedimetric sensor. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02154naa a2200217 a 4500
001 2155314
005 2024-01-15
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1021/acsanm.2c00484$2DOI
100 1 $aFACURE, M. H. M.
245 $aPolyacrylonitrile/Reduced Graphene Oxide Free-Standing Nanofibrous Membranes for Detecting Endocrine Disruptors.$h[electronic resource]
260 $c2023
300 $a6376–6384
520 $aEndocrine-disrupting chemicals (EDCs) are emerging pollutants whose uncontrolled release in natural aquatic environments can pose risks to human and animal health. In this scenario, the development of simple, low-cost, and sensitive methods to detect trace amounts of EDCs in the environment is highly sought. In this work, a nanofiber-based sensor was fabricated by functionalizing a polyacrylonitrile (PAN) electrospun nanofibrous membrane with reduced graphene oxide (rGO) to be used as a flexible and free-standing electrode to detect EDCs through electrical impedance measurements. The rGO was obtained from graphene oxide using a hydrothermal route, while the PAN/rGO composite membrane was prepared through vacuum filtration. The rGO provided high electrical conductivity to the membrane, which presented a good performance in the detection of endocrine hormones. The electrical resistance variation enabled the detection of 17αethinylestradiol (EE2) in a linear range between 10−5 and 10−11 mol L−1 . Moreover, by using the principal component analysis (PCA) for data treatment, the sensor was able to discriminate EE2, estrone, estradiol, and progesterone at 100 pmol L−1 in real river water samples. These results open up the possibility to fabricate in a simple way functionalized nanofibrous membranes to be used as sensing material for the detection of varied analytes with high sensitivity and low cost.
653 $aElectrical impedance spectroscopy
653 $aElectrospinning
653 $aElectrospun nanofibers
653 $aImpedimetric sensor
700 1 $aMERCANTE, L. A.
700 1 $aCORREA, D. S.
773 $tACS Applied Nano Materials$gv. 5, 2022.
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