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Results 1-10 of 48 (Search time: 0.033 seconds).

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Issue DateTitleAuthor(s)
Jan-2004Spectrophotometric determination of chromium in steel with 4-(2- thiazolylazo)-resorcinol (TAR) using microwave radiationCarvalho, Luciene Santos de; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Teixeira, Leonardo Sena Gomes
2011Application of full factorial design and Doehlert matrix for the optimisation of beef tallow methanolysis via homogeneous catalysisMendonça, Daniel Ribeiro de; Andrade, Heloysa Martins Carvalho; Guimarães, Paulo Roberto Britto; Vianna, Regina Ferreira; Meneghetti, Simoni Margareti Plentz; Pontes, Luiz Antônio Magalhães; Teixeira, Leonardo Sena Gomes
1995Spectrophotometric determination of tin in copper-based alloys using pyrocatechol violetCosta, Antonio Celso Spinola; Teixeira, Leonardo Sena Gomes; Ferreira, Sergio Luis Costa
2013Determination of trace element concentrations in tomato samples at different stages of maturation by ICP OES and ICP-MS following microwave-assisted digestionBressy, Fernanda Costa; Brito, Geysa Barreto; Barbosa, Isa dos Santos; Teixeira, Leonardo Sena Gomes; Korn, Maria das Graças Andrade
2011Use of nitroanilines for spectrophotometric determination of ethinylestradiol in pharmaceutical formulationsTeixeira, Leonardo Sena Gomes; Teixeira, Maiana de Araujo; Bueno, Admar Jorge Machado; Brito, Cristiane F. de; Dantas, Alailson Falcão; Costa, Antonio Celso Spinola
Sep-2009Comparison between conventional and ultrasonic preparation of beef tallow biodieselTeixeira, Leonardo Sena Gomes; Assis, Júlio César Rosa; Mendonça, Daniel Ribeiro de; Santos, Iran T. V.; Guimarães, Paulo R. B.; Pontes, Luiz Antônio Magalhães; Teixeira, Josanaide Sant'Ana Ribeiro
Apr-2010Characterization of beef tallow biodiesel and their mixtures with soybean biodiesel and mineral diesel fuelTeixeira, Leonardo Sena Gomes; Couto, Marcelo B.; Souza, Giancarlos da Silva; Andrade Filho, Miguel; Assis, Júlio César Rosa; Guimarães, Paulo R. B.; Pontes, Luiz Antônio Magalhães; Almeida, Selmo Q.; Teixeira, Josanaide Sant'Ana Ribeiro
1998ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridgesTeixeira, Leonardo Sena Gomes; Reis, José Oscar N.; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; Andrade, Jailson Bittencourt de
1998Spectrophotometric determination of vanadium(IV) in the presence of vanadium(V) using Br-PADAPCosta, Antonio Celso Spinola; Teixeira, Leonardo Sena Gomes; Jaeger, Helena Valli; Ferreira, Sergio Luis Costa
Mar-2011Determination of copper, iron, lead and zinc in gasoline by sequential multi-element flame atomic absorption spectrometry after solid phase extractionSantos, Denilson S. S.; Korn, Maria das Graças Andrade; Guida, Mauro A. B.; Santos, Gabriel Luiz dos; Lemos, Valfredo Azevedo; Teixeira, Leonardo Sena Gomes

 

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