Now showing items 1-10 of 28
Isotopic fractionation and trophic position of zooplankton species in the Upper Paraná River floodplain
(Brazilian Journal of Biology, 2011-02-01) [Artigo]
O objetivo desse estudo foi avaliar o fracionamento isotópico e as posições tróficas de três espécies zooplanctônicas (Notodiaptomus amazonicus, Moina minuta e Bosmina hagmanni) na planície de inundação do alto rio Paraná. ...
Carbon-13 and Nitrogen-15 Turnover in Serum of Bubaline Donors of Biological Material for Medical Use
(Toxicon, 2012-08-01) [Resumo]
The use of stable isotopes to investigate the effects of supplemental lysine and methionine on protein turnover and amino acid utilization in pacu, Piaractus mesopotamicus, juveniles
(Aquaculture, 2014-09-20) [Artigo]
The present study investigated the use of the stable isotope technique to evaluate the effects of nutritionally deficient diets, supplied or not with lysine and/or methionine, on the isotopic turnover of bio-elements (carbon ...
Traceability of animal by product meals in broilers fed sugarcane yeast using stable isotopes
(Revista Brasileira de Ciência Avícola, 2012-03-01) [Artigo]
The objective of this study was to verify if the dietary inclusion of sugarcane yeast at levels commonly used in broiler diets influences the traceability of cattle meat meal and poultry offal meal, using the technique of ...
Seasonal changes in vegetative growth and photosynthesis of Arabica coffee trees
(Field Crops Research, 2004-10-08) [Artigo]
Seasonal changes in vegetative growth, leaf gas exchanges, carbon isotope discrimination (Delta) and carbohydrate status were monitored in de-fruited coffee trees (Coffea arabica L.) grown in the field, from October 1998 ...
Growth and photosynthetic down-regulation in Coffea arabica in response to restricted root volume
(Functional Plant Biology, 2006-01-01) [Artigo]
Coffee (Coffea arabica L.) plants were grown in small (3-L), medium (10-L) and large (24-L) pots for 115 or 165 d after transplanting (DAT), which allowed different degrees of root restriction. Effects of altered source : ...
Evaluation of growth performance and gastro-intestinal parameters on the response of weaned piglets to dietary organic acids
(Anais da Academia Brasileira de Ciencias, 2018-01-01) [Artigo]
Two experiments (E) were carried out to evaluate the effects of fumaric acid and an acidifier blend [composed by calcium formate, calcium lactate and medium-chain fatty acids (capric and caprylic)] in piglet diets containing ...
Geochemical characterization of the largest upland lake of the Brazilian Amazonia: Impact of provenance and processes
(Journal Of South American Earth Sciences, 2017-12-01) [Artigo]
Lake Tres Irmas (LTI), the largest upland lake in the Brazilian Amazonia, located in Serra dos Carajas, was characterized using multi-elemental and isotope geochemistry (delta 13(C) and delta N-15) to understand the ...
Water deficit modifies the carbon isotopic composition of lipids, soluble sugars and leaves of Copaifera langsdorffii Desf. (Fabaceae)
(Acta Botanica Brasilica, 2018-01-01) [Artigo]
Water deficit is most frequent in forest physiognomies subjected to climate change. As a consequence, several tree species alter tissue water potential, gas exchange and production of carbon compounds to overcome damage ...
Método de análise isotópica (δ13C) em suco clarificado de maçã
(Boletim Centro de Pesquisa de Processamento de Alimentos, 2014-01-01) [Artigo]
The aims of this study were to develop the method of isotope analysis to quantify the carbon of the C3 photosynthetic cycle in commercial clarified apple juices and to measure the legal limit based on Brazilian legislation ...