Search Results - "Nunes, Gilvanda Silva"

Diethylenetriamine ion-imprinted silica gel for copper determination in tap water by Villis, Paulo Cesar Mendes, Filho, José Costa Sampaio, Gomes, Wolia Costa, de Miranda, Rita de Cassia Mendonça, Nunes, Gilvanda Silva, Pissetti, Fábio Luiz, Gushikem, Yoshitaka, Lucho, Alzira Maria Serpa

“…This paper proposes the preparation of a hybrid adsorbent material organically modified with N 1-[3-(trimethoxysilyl)propyl]diethylenetriamine and imprinted…”
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Formation of hydroxyapatite nanoprecursors by the addition of bioactive particles in resin-modified glass ionomer cements by Moraes, Jaciara Ferreira, Gomes de Moraes, Thais, Nunes, Fabiola Rodrigues Sampaio, Carvalho, Edilausson Moreno, Nunes, Gilvanda Silva, Carvalho, Ceci Nunes, Ardenghi, Diego Machado, Bauer, José

“…The objective of this study was to evaluate the impact of adding bioactive glasses 45S5 and niobophosphate (NbG) in different concentrations (5, 10 and 20%) of…”
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A novel glutathione-S-transferase-based biosensor for pyrethroid insecticides: From inhibition study to detection by Ribeiro, Eliane Braga, Ribeiro, Danilo Braga, dos Santos Soares, Alexandra Martins, Marques, Paulo Roberto B.O., Badea, Mihaela, Targa, Marcelo, Granato, José Aparecido, Nunes, Gilvanda Silva

“…•In silico studies indicated binding affinity of pyrethroid insecticides to the glutathione S-transferase-GST catalytic site.•Also, the selected pyrethroid…”
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Determination of the Antioxidant Activity of Samples of Tea and Commercial Sources of Vitamin C, Using an Enzymatic Biosensor by Ribeiro, Danilo Braga, Santos Silva, Gabriela, Dos Santos, Djanira Rubim, Castro Costa, Andressa Rose, Braga Ribeiro, Eliane, Badea, Mihaela, Nunes, Gilvanda Silva

“…Antioxidants are synthetic or natural compounds capable of preventing or delaying oxidative damage caused by chemical species that can oxidize cell…”
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Enzyme immobilization procedures on screen-printed electrodes used for the detection of anticholinesterase pesticides: Comparative study by Silva Nunes, Gilvanda, Jeanty, Gérard, Marty, Jean-Louis

“…A comparison between several acetylcholinesterase (AChE) immobilization procedures on the 7,7,8,8-tetracyanoquinodimethane (TCNQ)-modified graphite working…”
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Mineral and bromatological assessment and determination of the antioxidant capacity and bioactive compounds in native Amazon fruits by Magda Márcia Becker, Carolina Marques Mandaji, Gaëlle Catanante, Jean-Louis Marty, Gilvanda Silva Nunes

“…Abstract The proximate compositions, mineral contents, antioxidant capacity and bioactive compounds of 7 native Amazon fruits were chemically evaluated. The…”
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Comparative investigation between acetylcholinesterase obtained from commercial sources and genetically modified Drosophila melanogaster: Application in amperometric biosensors for methamidophos pesticide detection by de Oliveira Marques, Paulo Roberto Brasil, Nunes, Gilvanda Silva, dos Santos, Teresa Cristina Rodrigues, Andreescu, Silvana, Marty, Jean-Louis

“…Genetically modified acetylcholinesterase (AChE) from Drosophila melanogaster ( dm) and from commercial sources, Electric eel ( ee), Bovine erythrocites ( be)…”
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Determinação de hormônios estrógenos em água potável usando CLAE-DAD by Verbinnen, Raphael Teixeira, Nunes, Gilvanda Silva, Vieira, Eny Maria

“…An analytical procedure for determination of estriol, 17β-estradiol, estrone and 17α-ethinylestradiol in drinking water is presented. The method employs solid…”
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Acetylcholine enzyme sensor for determining methamidophos insecticide: Evaluation of some genetically modified acetylcholinesterases from Drosophila melanogaster by Nunes, Gilvanda Silva, Montesinos, Thierry, Marques, Paulo Brasil O., Fournier, Didier, Marty, Jean Louis

“…A sensitive screen-printed amperometric sensor suitable for rapid determination of the concentration of the insecticide methamidophos was developed. It was…”
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Analysis of pesticides in food and environmental samples by enzyme-linked immunosorbent assays by Nunes, Gilvanda Silva, Toscano, Ilda Antonieta, Barceló, D

“…Enzyme-linked immunosorbent assays (ELISAs) are the most extensively studied types of immunoassay and their application in pesticide residue monitoring is an…”
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Determination of carbamate residues in crop samples by cholinesterase-based biosensors and chromatographic techniques by Nunes, Gilvanda Silva, Skládal, Petr, Yamanaka, Hideko, Barceló, Damiá

“…An amperometric biosensor based on cholinesterase (ChE) has been used for the determination of selected carbamate insecticides in vegetable samples. The linear…”
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Enzyme immobilization procedures on screen-printed electrodes used for the detection of anticholinesterase pesticides by Silva Nunes, Gilvanda, Jeanty, Gérard, Marty, Jean-Louis

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Development of a highly sensitive xanthine oxidase-based biosensor for the determination of antioxidant capacity in Amazonian fruit samples by Becker, Magda Márcia, Ribeiro, Eliane Braga, de Oliveira Marques, Paulo Roberto Brasil, Marty, Jean-Louis, Nunes, Gilvanda Silva, Catanante, Gaëlle

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Development of a highly sensitive xanthine oxidase-based biosensor for the determination of antioxidant capacity in Amazonian fruit samples by Becker, Magda Márcia, Ribeiro, Eliane Braga, de Oliveira Marques, Paulo Roberto Brasil, Marty, Jean-Louis, Nunes, Gilvanda Silva, Catanante, Gaëlle

“…The paper describes the development of an amperometric biosensor using Prussian Blue (PB) modified electrodes containing xanthine oxidase (XOD). The enzyme is…”
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Electrochemical Glyphosate Sensor Based on Hybrid Material SiO2/Sm2O3/Carbon Modified with Meldola Blue by Vieira Blasques, Rodrigo, Fernandes‐Junior, Wilson S., Vieira Mendes, Ana Márcia Rabelo, Rose Castro Costa, Andressa, Canevari, Thiago C., Ticona Arenas, Leliz, Barcellos da Rosa, Marcelo, Nunes, Gilvanda Silva, Campos Janegitz, Bruno, Chagas Silva, Maria Raimunda, Pividori, María Isabel, Mendes Villis, Paulo Cesar

“…In this work, we have proposed an electrochemical sensor for the detection of pesticides by using a ceramic composite with a SiO2 surface modified with Sm2O3…”
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Interaction between Benzo[a]anthracene 7,2-dione 7-oxime (BZA) and calf thymus dsDNA using electroanalytical genosensor by Pinheiro-Sousa, Débora Batista, Sousa Lima, Mayara Ingrid, Gonçalves, Ricardo Mendes, Silva Santos, Débora Martins, Vieira de Carvalho Neta, Alcina, Benjamim, Laércio dos Anjos, Nunes, Gilvanda Silva, Brasil de Oliveira Marques, Paulo Roberto, Fortes Carvalho-Neta, Raimunda Nonata

“…In the present study, the objective was to evaluate in situ interaction between Benzo[a]anthracene 7,2-dione 7-oxime (BZA) and calf thymus dsDNA (ct-dsDNA)…”
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Electrochemical Glyphosate Sensor Based on Hybrid Material SiO 2 /Sm 2 O 3 /Carbon Modified with Meldola Blue by Vieira Blasques, Rodrigo, Fernandes‐Junior, Wilson S., Vieira Mendes, Ana Márcia Rabelo, Rose Castro Costa, Andressa, Canevari, Thiago C., Ticona Arenas, Leliz, Barcellos da Rosa, Marcelo, Nunes, Gilvanda Silva, Campos Janegitz, Bruno, Chagas Silva, Maria Raimunda, Pividori, María Isabel, Mendes Villis, Paulo Cesar

“…In this work, we have proposed an electrochemical sensor for the detection of pesticides by using a ceramic composite with a SiO 2 surface modified with Sm 2 O…”
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Breve revisão de métodos de determinação de resíduos do herbicida ácido 2,4-diclorofenoxiacético (2,4-D) by Amarante Júnior, Ozelito Possidônio de, Santos, Teresa Cristina Rodrigues dos, Nunes, Gilvanda Silva, Ribeiro, Maria Lúcia

“…This paper supplies a revision about the main techniques of extraction, clean-up and pre-concentration of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D)…”
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Direct determination of methyl parathion insecticide in rice samples by headspace solid-phase microextraction-gas chromatography-mass spectrometry by da Silva, Darlan Ferreira, Paiva Silva, Francisco Eduardo, Silva, Fernanda Gabrielle S, Nunes, Gilvanda Silva, Badea, Mihaela

“…BACKGROUND The organophosphorus insecticides, especially those based on methyl parathion as active principle, have been used extensively in the protection of…”
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Synthesis and characterization of a new ceramic nanomaterial SiO2/NPsSm2O3/C-graphite for the development of electrochemical sensors by Blasques, Rodrigo Vieira, Pereira, Maria Alessandra Azevedo, Mendes, Ana Marcia Rabelo Vieira, Filho, Nestor Everton Mendes, Gomes, Wolia Costa, Arenas, Leliz Ticona, Marty, Jean-Louis, Gurgo, María Isabel Pividori, Nunes, Gilvanda Silva, Villis, Paulo Cesar Mendes

“…A new ceramic nanomaterial, SiO2/NPsSm2O3/C-graphite (specific surface area 340 m2 g−1), obtained by the sol-gel process, was synthesized for industrial,…”
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