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	Provedor de dados BJM (1) Scientia Agricola (1) Autor Colnago,Luiz Alberto (2) Assis,Odilio Benedito Garrido (1) Bernardes Filho,Rubens (1) Berton,Ronaldo (1) Bettiol,Wagner (1) Camargo,Otávio Antonio de (1) González Pérez,Martha (1) Jorge,Lúcio André de Castro (1) Martin-Neto,Ladislau (1) Milori,Débora Marcondes Bastos Pereira (1) Osiro,Denise (1) Mais... Palavra-chave Atomic force microscopy (AFM) (1) Bacteria visualization (1) Cell dimensions (1) Chemical fractions (1) Escherichia coli (1) Particle size fraction (1) Spectroscopy (1) Tropical soil (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2012 (1) 2006 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Laser-induced fluorescence of organic matter from a Brazilian Oxisol under sewage-sludge applications Scientia Agricola González Pérez,Martha; Milori,Débora Marcondes Bastos Pereira; Martin-Neto,Ladislau; Colnago,Luiz Alberto; Camargo,Otávio Antonio de; Berton,Ronaldo; Bettiol,Wagner. Sludge applications have been used to maintain fertility of agricultural soils without damaging the natural ecosystem. The aim of this study was evaluating the influence of sewage-sludge addition on the quality of organic matter (OM) of a Brazilian Oxisol by Laser Induced Fluorescence (LIF). LIF was used to analyze OM of whole soil and different soil fractions separated by chemical and physical methods. The high fluorescence contribution of humin fraction to the fluorescence of whole soils was shown, stressing the importance of studying OM associated to mineral matrix of soil. Spectra with different shapes were obtained for every particle size fraction, indicating differences in organic compounds bounded to them. The fraction with the higher carbon content... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tropical soil; Spectroscopy; Particle size fraction; Chemical fractions. Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000300009 Measuring bacterial cells size with AFM BJM Osiro,Denise; Bernardes Filho,Rubens; Assis,Odilio Benedito Garrido; Jorge,Lúcio André de Castro; Colnago,Luiz Alberto. Atomic Force Microscopy (AFM) can be used to obtain high-resolution topographical images of bacteria revealing surface details and cell integrity. During scanning however, the interactions between the AFM probe and the membrane results in distortion of the images. Such distortions or artifacts are the result of geometrical effects related to bacterial cell height, specimen curvature and the AFM probe geometry. The most common artifact in imaging is surface broadening, what can lead to errors in bacterial sizing. Several methods of correction have been proposed to compensate for these artifacts and in this study we describe a simple geometric model for the interaction between the tip (a pyramidal shaped AFM probe) and the bacterium (Escherichia coli JM-109... Tipo: Info:eu-repo/semantics/article Palavras-chave: Atomic force microscopy (AFM); Escherichia coli; Cell dimensions; Bacteria visualization. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100040 Registros recuperados: 2 Primeira ... 1 ... Última

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