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Extração de matéria orgânica aquática por abaixamento de temperatura: Uma metodologia alternativa para manter a identidade da amostra
(2003-03-01)
In this work was developed an alternative methodology to separation of aquatic organic matter (AOM) present in natural river waters. The process is based in temperature decreasing of the aqueous sample under controlled ...
Estoque de carbono orgânico no solo afetado por adubação orgânica e sistemas de culturas no Sul do Brasil
(Universidade Estadual de Londrina (UEL), 2012-01-01)
Organic carbon is a major component of soil organic matter and its stock is influenced by the management system adopted. This study aimed to examine the effects of cropping systems and nutrient sources (mineral and organic) ...
The Growing Impact of Niobium in Organic Synthesis and Catalysis
(Aldrich Chemical Co Inc, 2012-01-01)
The growing interest in, and applications of, niobium compounds in organic synthesis and catalysis are surveyed, with a focus on their efficiency and versatility in several classical and broad organic reaction types. It ...
Archival information and organic information: a conceptual analysis of the Brazilian literature
(Epi, 2010-07-01)
Information has increasingly become a crucial resource for organizations that want to remain competitive in the market. For this reason, analysis and a correct understanding of informational types that are present in these ...
Photoluminescence of bulks and thin films of Eu3+-doped organic/inorganic hybrids
(Elsevier B.V. Sa, 2008-02-28)
Organic-inorganic hybrids formed by polyether-based chains grafted to both ends to a siliceous backbone through urea cross-linkages (-NHC=O)NH-), named di-ureasil, have been used as host for incorporation of Eu3+ in the ...
Modifications in organic acid profiles during fruit development and ripening: correlation or causation?
(Frontiers in Plant Science, 2019)
Evaluation of the presence of microorganisms in solid-organ preservation solution
(Brazilian Society of Infectious Diseases, 2011-12-01)
OBJECTIVE: To assess the presence of microorganism contamination in the preservation solution for transplant organs (kidney/pancreas). Method: Between August 2007 and March 2008, 136 samples of preservation solution were ...
Analysis of total glucosinolates and chromatographically purified benzylglucosinolate in organic and conventional vegetables
(2013-01-01)
The limited availability of foods that are free of pesticides has led Brazil to search for alternative production methods to meet the desires of consumers. Currently, organic cultivation represents a production system that ...
Carbon Stocks and Isotopic Composition of the Organic Matter in Soils Covered by Native Vegetation and Pasture in Sorocaba, SP, Brazil
(Univ Tehran, 2009-06-01)
Land cover change constitutes one of main way of alteration of soil organic matter in both quantitative and qualitative terms. The goal of this study was to compare the carbon stock and the isotopic signature of the organic ...