Search Results - "Vieira, AAH"

Oxygen uptake during mineralization of photosynthesized carbon from phytoplankton of the Barra Bonita reservoir: a mesocosm study by Cunha-Santino, M B, Gouvêa, S P, Bianchini, Jr, I, Vieira, A A H

“…This study aimed to discuss and describe the oxygen consumption during aerobic mineralization of organic products (cells and excretion products) from five…”
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The metal binding capacity of Anabaena spiroides extracellular polysaccharide: an EPR study by Freire-Nordi, Cristina Souza, Vieira, Armando Augusto Henriques, Nascimento, Otaciro Rangel

“…This study focuses on the development of an unusual methodology, the EPR technique, with the purpose of verifying the metal adsorption capacity of high…”
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RELATIVE INCREASE OF DEOXY SUGARS DURING MICROBIAL DEGRADATION OF AN EXTRACELLULAR POLYSACCHARIDE RELEASED BY A TROPICAL FRESHWATER THALASSIOSIRA SP. (BACILLARIOPHYCEAE) by Giroldo, Danilo, Vieira, Armando Augusto Henriques, Paulsen, Berit Smestad

“…The aim of this study was to characterize the extracellular polysaccharides (EPS) released by a freshwater Thalassiosira sp. (Bacillariophyceae) and evaluate…”
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Polymeric and free sugars released by three phytoplanktonic species from a freshwater tropical eutrophic reservoir by Giroldo, Danilo, Vieira, Armando Augusto Henriques

“…Several studies have focused on the release of carbohydrates by phytoplankton because of the ecological significance of such compounds. This process increases…”
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Copper and cadmium complexation by high molecular weight materials of dominant microalgae and of water from a eutrophic reservoir by Gouvêa, S.P., Vieira, A.A.H., Lombardi, A.T.

“…High molecular weight materials (HMWM, >12 000–14 000 Da) excreted by the two cyanophyte species ( Microcystis aeruginosa and Anabaena spiroides) and a diatom…”
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Mucilaginous capsule adsorption and intracellular uptake of copper by Kirchneriella aperta (Chlorococcales) by Lombardi, A T, Vieira, A A, Sartori, LA

“…The purpose of the present investigation was to evaluate possible ecological and physiological functions of mucilaginous capsules produced by the freshwater…”
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A rapid spectrophotometric method for the determination of transparent exopolymer particles (TEP) in freshwater by Arruda Fatibello, Silvia H.S, Henriques Vieira, Armando Augusto, Fatibello-Filho, Orlando

“…A simple and rapid spectrophotometric method is proposed for the determination of transparent exopolymer particles (TEP) in freshwater samples. In this method,…”
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Toxicity of ionic copper to the freshwater microalga Scenedesmus acuminatus (Chlorophyceae, Chlorococcales) by Lombardi, Ana Teresa, Hidalgo, Thais Moreira dos Reis, Vieira, Armando Augusto Henriques, Sartori, Antonio Luiz

“…A.T. Lombardi, T.M.R. Hidalgo, A.A.H. Vieira and A.L. Sartori. 2007. Toxicity of ionic copper to the freshwater microalga Scenedesmus acuminatus…”
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Copper complexing properties of dissolved organic materials exuded by the freshwater microalgae Scenedesmus acuminatus (Chlorophyceae) by Lombardi, A.T., Hidalgo, T.M.R., Vieira, A.A.H.

“…Dissolved organic materials released by the freshwater microalgae Scenedesmus acuminatus were fractionated into low- and high-molecular weight materials, which…”
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Extracellular polysaccharides produced by a tropical cryptophyte as a carbon source for natural bacterial populations by Giroldo, Danilo, Vieira, Armando A.H., Paulsen, Berit S.

“…The extracellular polysaccharides (EPS) released by a freshwater cryptophyte, Cryptomonas tetrapyrenoidosa were characterized and their degradation by…”
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Decomposition of dissolved organic matter released by an isolate of Microcystis aeruginosa and morphological profile of the associated bacterial community by Moreira, I C, Bianchini, Jr, I, Vieira, A A H

“…This study concerns the kinetics of bacterial degradation of two fractions (molecular mass) of dissolved organic matter (DOM) released by Microcystis…”
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Decomposition of dissolved organic matter released by an isolate of Microcystis aeruginosa and morphological profile of the associated bacterial community/Decomposicao da materia organica dissolvida liberada por um isolado de Microcystis aeruginosa e padrao morfologico da comunidade bacteriana associada by Moreira, I.C, Bianchini, Jr., I, Vieira, A.A.H

“…This study concerns the kinetics of bacterial degradation of two fractions (molecular mass) of dissolved organic matter (DOM) released by Microcystis…”
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Phytoplankton relationship with bacterioplankton, dissolved carbohydrates and water characteristics in a subtropical coastal lagoon by Guimarães, Pablo S., Zigiotto, Layanna, Garcia, Marinês, Dellamano-Oliveira, Maria J., Vieira, Armando A.E., Giroldo, Danilo

“…Release of carbohydrates by phytoplankton enhances microbial diversity, promoting associations between algae and heterotrophic organisms. Thus, this work aimed…”
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The effects of Anabaena spiroides exopolysaccharides on copper accumulation in an aquatic food chain by Nogueira, P.F.M., Melão, M.G.G., Lombardi, A.T., Nogueira, M.M., Vieira, A.A.H.

“…The influence of Anabaena spiroides exopolysaccharides (EPS) on copper speciation (total dissolved, particulate and free Cu 2+ ions) and bioavailability in…”
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Assimilation and release of super(14)C in a tropical strain of Cryptomonas obovata (Cryptophyceae) exposed to several irradiances by Giroldo, D, Vieira, AAH

“…Carbon assimilation ( super(14)C) and dissolved organic carbon (DO super(14)C) release by a tropical strain of Cryptomonas obovata was studied. Cells were…”
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The effects of Anabaena spiroides (Cyanophyceae) exopolysaccharide on copper toxicity to Simocephalus serrulatus (Cladocera, Daphnidae) by NOGUEIRA, PATRÍCIA F. M., MELÃO, MARIA DA G. G., LOMBARDI, ANA T., VIEIRA, ARMANDO A. H.

“…Summary 1. This work investigated the consumption of a microalgal (Anabaena spiroides) exopolysaccharide by the cladoceran Simocephalus serrulatus (Cladocera,…”
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An extracellular sulfated fucose-rich polysaccharide produced by a tropical strain of Cryptomonas obovata (Cryptophyceae) by GIROLDO, Danilo, VIEIRA, Armando A. H

“…A tropical strain of Cryptomonas obovata Skuja, isolated from a shallow oxbow lake, released a sulfated fucose-rich polysaccharide. The polysaccharide is…”
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Microbial degradation of extracellular polysaccharides released by a tropical strain of Staurastrum orbiculare (Zygnematophyceae) by Giroldo, Danilo, Vieira, Armando A. H., Paulsen, Berit S.

“…D. Giroldo, A.A.H. Vieira and B.S. Paulsen. 2005. Microbial degradation of extracellular polysaccharides released by a tropical strain of Staurastrum…”
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Activity of glycosidases from freshwater heterotrophic microorganisms on the degradation of extracellular polysaccharide produced by Anabaena spiroides (Cyanobacteria) by Colombo, Vanessa(Universidade Federal de São Carlos Departamento de Botânica), Vieira, Armando A.H.(Universidade Federal de São Carlos Departamento de Botânica), Moraes, Gilberto(Universidade Federal de São Carlos Departamento de Genética e Evolução)

“…The activity of specific glycosidases during the degradation of the extracellular polysaccharide (EPS) produced by Anabaena spiroides was determined using…”
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EXTRACELLULAR POLYSACCHARIDES FROM ANKISTRODESMUS DENSUS (CHLOROPHYCEAE) by Paulsen, Berit Smestad, Aslaksen, Torun, Freire-Nordi, Cristina S., Vieira, Armando A. H.

“…The dissolved extracellular compounds produced by the Chlorococcalean Ankistrodesmus densus Kors. were investigated for their molecular masses and chemical…”
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