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	Provedor de dados Rev. Bras. Ciênc. Solo (2) Autor Poleto,Cristiano (2) Baginski,Álvaro José (1) Bortoluzzi,Edson Campanhola (1) Juchen,Carlos Roberto (1) Macedo,Maurício (1) Silva,Vanderlei Rodrigues da (1) Vilas Boas,Márcio Antônio (1) Mais... Palavra-chave Aggregate stability (1) Conservation areas (1) Environmental quality (1) Laser granulometry (1) Natural heavy metal levels (1) Particle cohesion (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Info:eu-repo/semantics/other (1) Ano 2014 (1) 2010 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Aggregation of subtropical soil under liming: a study using laser diffraction Rev. Bras. Ciênc. Solo Bortoluzzi,Edson Campanhola; Poleto,Cristiano; Baginski,Álvaro José; Silva,Vanderlei Rodrigues da. Laser diffraction (LD) provides detailed analysis of particle size distribution. Its application to testing the stability of soil aggregates can assist studies on the aggregation of soils with contrasting electrochemical properties. The objectives of the present work were: (a) to propose a protocol for using LD to study soil aggregation, (b) to study the aggregation of an Acrisol under the influence of different doses and forms of lime. Samples were collected in 2005 from a Brazilian Acrisol that in 1994 had received 0.0; 2.0; 8.5 and 17.0 Mg ha-1 of lime, left on the soil surface or incorporated. Aggregates from 4.76 to 8.00 mm diameters were studied using the traditional method proposed by Kemper & Chepil (1965), with wet sieving, while... Tipo: Info:eu-repo/semantics/article Palavras-chave: Laser granulometry; Aggregate stability; Particle cohesion. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300014 Use of legal reserve areas as geochemical background in hydrosedimentology studies¹ Rev. Bras. Ciênc. Solo Juchen,Carlos Roberto; Vilas Boas,Márcio Antônio; Poleto,Cristiano; Macedo,Maurício. In hydrosedimentology studies the determination of the trace element concentrations at the study site is imperative, since this background can be used to assess the enrichment of sediments with these elements. This enrichment can be the result of the natural process of geological formation or of anthropogenic activities. In the latter case, guidelines are used to indicate the concentrations at which trace elements cause ecotoxicity effects on the environment. Thus, this study used legal reserve areas in the municipality of Toledo, PR, where natural forests are maintained, with no or minimal human interference to establish background levels. The results of atomic emission spectrometry with inductively coupled argon plasma showed that the legal reserves have... Tipo: Info:eu-repo/semantics/other Palavras-chave: Natural heavy metal levels; Conservation areas; Environmental quality. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000600029 Registros recuperados: 2 Primeira ... 1 ... Última

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