Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Pedro Orival Luccas"'
Autor:
Cristiana Schmidt de Magalhães, Jéssica Emi Takarada, Nathália Costa Carvalho, Dayene do C. Carvalho, Felipe Lopes de Andrade, Eric Batista Ferreira, Pedro Orival Luccas, Luciana Azevedo
Publikováno v:
Journal of Chemistry, Vol 2016 (2016)
This study aimed to evaluate the effect of organic/conventional coffee in liver tissues in the cancer process, taking into account the level and activities of catalase. The experiments were carried out with 8 groups of rats during 12 weeks. They rece
Externí odkaz:
https://doaj.org/article/c80d7b429f42408bb371d6f970c82bb5
Autor:
Pedro Marcos Frugeri, Ayla Campos do Lago, Célio Wisniewski, Marcello Henrique da Silva Cavalcanti, Eduardo Costa Figueiredo, César Ricardo Teixeira Tarley, Pedro Orival Luccas
Publikováno v:
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. 241
In this work, magnetic restricted-access carbon nanotubes (M-RACNTs) were synthesized, characterized and used in the dispersive solid-phase extraction (d-SPE) of organophosphate pesticides (OPPs) from food samples (broccoli, eggplant, cauliflower, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ee1fa9331b4b6a7a3d37e3385756186
https://pubmed.ncbi.nlm.nih.gov/32650243
https://pubmed.ncbi.nlm.nih.gov/32650243
Autor:
Pedro Marcos Frugeri, Célio Wisniewski, Ayla Campos do Lago, Camila Marchioni, Pedro Orival Luccas
Publikováno v:
Analytical Letters. 51:1492-1504
This work proposes a flow injection analysis system for sulfaguanidine determination in pharmaceutical and food samples. The method was based on the reaction of sulfaguanidine with nitronium ion to...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f83f20c8c403b5d78428747b6f885342
https://doi.org/10.1080/00032719.2017.1383412
https://doi.org/10.1080/00032719.2017.1383412
Autor:
Camila Marchioni, Célio Wisniewski, Pedro Orival Luccas, Ayla Campos do Lago, Pedro Sergio Fadini, Tássia Venga Mendes
Publikováno v:
Applied Spectroscopy. 70:1842-1850
This work proposes a preconcentration method using an ion imprinted polymer (IIP) for determination of cadmium, in several samples, employing a mini-column filled with the polymer coupled into a flow injection analysis system with detection by thermo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::786be6aeee00ff10483684f939529a93
https://doi.org/10.1177/0003702816658669
https://doi.org/10.1177/0003702816658669
Autor:
Juan A. V. A. Barros, Pedro Orival Luccas, Guilherme de O. Santos, Fagner Moreira de Oliveira, Célio Wisniewski
Publikováno v:
Analytical Letters. 50:414-430
A webcam was used to determine Al(III), total Fe, , and in waters by digital image colorimetry. Least squares regression was used to obtain a quadratic equation based on the red, green, blue, hue, saturation, and brightness color values, which allowe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4009e7e4db7959a4eb8c20d45f77107
https://doi.org/10.1080/00032719.2016.1182542
https://doi.org/10.1080/00032719.2016.1182542
Autor:
Raphael A. B. Gomes, Cristiana Schmidt de Magalhães, Pedro Orival Luccas, Eduardo Costa Figueiredo
Publikováno v:
Journal of Materials Science. 51:7407-7414
This paper’s proposal was to study the pH influence on protein exclusion in restricted access carbon nanotubes (RACNT), obtained by chemical modification of carbon nanotubes (CNT) using concentrated acid oxidizing agent (HNO3—65 % v/v). Oxidized
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::997418346b5e9edcdc3e47edb2393ed0
https://doi.org/10.1007/s10853-016-9984-6
https://doi.org/10.1007/s10853-016-9984-6
Autor:
Grazielle Cabral de Lima, M.R.L. Nascimento, Célio Wisniewski, Pedro Orival Luccas, Ayla Campos do Lago, Pedro Sergio Fadini
Publikováno v:
Analytical Letters. 48:2739-2753
A hybrid imprinted polymer was synthesized using 3-(trimethoxysilyl) propylmethacrylate 4 vinylpyridine as the inorganic monomer, metacrilic acid as the organic monomer, and the uranile ion as the template. The synthesis was performed via a sol-gel t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2d8a40c0bfaf20dc3da74b830bbc20ea
https://doi.org/10.1080/00032719.2015.1046550
https://doi.org/10.1080/00032719.2015.1046550
Autor:
Valéria Maria Pereira Barbosa, Eduardo Costa Figueiredo, Pedro Orival Luccas, Jefferson Bettini, Adriano Francisco Barbosa
Publikováno v:
Talanta. 131:213-220
In this paper, we propose a new sorbent that is able to extract metal ions directly from untreated biological fluids, simultaneously excluding all proteins from these samples. The sorbent was obtained through the modification of carbon nanotubes (CNT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c145eaa2d4907eed47290841ebb7ac7b
https://doi.org/10.1016/j.talanta.2014.07.051
https://doi.org/10.1016/j.talanta.2014.07.051
Publikováno v:
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 117:304-308
In this work a spectrophotometric flow injection analysis system for streptomycin determination in veterinary samples, is being proposed. The method is based on streptomycin alkaline hydrolysis that forms guanidine, followed by the reaction with Fe(I
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e23690b5449056c3f2bd5e377a9fe64
https://doi.org/10.1016/j.saa.2013.08.008
https://doi.org/10.1016/j.saa.2013.08.008
Publikováno v:
The Journal of Chemical Thermodynamics. 61:45-50
The phase diagrams and liquid + liquid equilibrium (LLE) data of the 1-butyl-3-methylimidazolium tetrafluoroborate {([Bmim]BF4) + Manganese sulfate (MnSO4) + water} system have been determined experimentally at T = (288.15, 293.15, 298.15, 303.15 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81c2d2b782cf7148a0dad171b591051b
https://doi.org/10.1016/j.jct.2013.01.025
https://doi.org/10.1016/j.jct.2013.01.025