Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Luciano F. Almeida"'
Autor:
Lucas A. Siqueira, Luciano F. Almeida, Julys Pablo Atayde Fernandes, Mario Cesar U. Araújo, Ricardo Alexandre C. Lima
Publikováno v:
Ultrasonics Sonochemistry, Vol 79, Iss , Pp 105774- (2021)
An ultrasonic reactor (UR) was developed and coupled to a digital movie-based flow-batch analyzer (DM-FBA) for the ultrasonic-assisted extraction (UAE) and fast determination of catalase and lipase activities in bovine and poultry livers. The lab-mad
Externí odkaz:
https://doaj.org/article/c2c9fce360ed4ecca159990ca62dc208
Autor:
Luciano F. Almeida, Pedro Lemos De Almeida Júnior, Francisco Antônio da Silva Cunha, Wellington da Silva Lyra, Mário César Ugulino de Araújo, Julys Pablo Atayde Fernandes
Publikováno v:
Revista Virtual de Química. 13:1062-1068
This worlk proposes a rapid, sensitive and accurate flow-batch digital image colorimetric (FB-DIC) system to zinc oxid determination in ointments. The method was based on the reaction between Zn(II) ions and zincon at pH = 9.0. The Zn(II)-zincon comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89cdd0e55613925ce7e4fed6c3d4a05a
https://doi.org/10.21577/1984-6835.20210030
https://doi.org/10.21577/1984-6835.20210030
Autor:
Eduardo A. Lima, Francisco A.S. Cunha, Maria J. Oliveira, Wellington S. Lyra, Mario M.S. Junior, Josué C.C. Santos, Sergio L.C. Ferreira, Mario C.U. Araujo, Luciano F. Almeida
Publikováno v:
Food Chemistry. 381:132194
Matrix complexity of fruit juices and their low antimony level requires sensitive, cost-effective instruments, time-consuming and error-prone sample pretreatment methods. Therefore, a flow-batch procedure (HG-FBA-AFS) was developed for the fast and s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f17843666bb6fd3e77f0751adcc4f29f
https://doi.org/10.1016/j.foodchem.2022.132194
https://doi.org/10.1016/j.foodchem.2022.132194
Publikováno v:
Analytica chimica acta. 1169
This work describes a 3D-printed robotic system named RSAWA (robotic system for automatic water analysis) for fully automated water analysis. RSAWA consists of a robotic arm coupled to a syringe pump, temperature and conductivity sensors, a low-cost
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f18270c7346923acd07d847e0a38ad98
https://pubmed.ncbi.nlm.nih.gov/34088373
https://pubmed.ncbi.nlm.nih.gov/34088373
Autor:
Francisco Antônio da Silva Cunha, Thais Helena Figueirêdo do Bonfim, Pedro Lemos de Almeida, Kássio M. G. Lima, Jailane de Souza Aquino, Luciano F. Almeida
Publikováno v:
Analytical Methods. 10:448-458
A green, rapid and sensitive automated analytical method with imaging detection for the determination of sulfite in vinegars using the pararosaniline (PRA)–formaldehyde–sulfite reaction is demonstrated. This work proposes the use of a flow-batch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faacde8b6348671ed67d5f7c00a67dd5
https://doi.org/10.1039/c7ay02155k
https://doi.org/10.1039/c7ay02155k
Autor:
Ricardo Chaves Lima, Wellington da Silva Lyra, Renato A.N. Andrade, Lucas A. Siqueira, Pedro Lemos De Almeida Júnior, Iara S. Nunes, Luciano F. Almeida, Mário César Ugulino de Araújo
Publikováno v:
Microchemical Journal. 133:593-599
This study addresses the challenge of performing fast and accurate titrations with end points that are difficult to identify. In this sense, the combination of digital movies (DMs) with a flow-batch analyzer (FBA) has shown to be a promising analytic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4666d3f38f8510614908957d40ff41d
https://doi.org/10.1016/j.microc.2017.04.041
https://doi.org/10.1016/j.microc.2017.04.041
Autor:
Wellington da Silva Lyra, Julys Pablo Atayde Fernandes, Francisco Antônio da Silva Cunha, Anderson S. G. Pereira, Luciano F. Almeida, Mário César Ugulino de Araújo
Publikováno v:
Food Analytical Methods. 10:921-930
This paper proposes a method to perform rapid and sensitive graphite furnace atomic absorption spectrometry (GFAAS) determination of Cr(VI) in vinegar samples without wet digestion. Taking into account low levels of Cr(VI) and the presence of several
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04353b7ac725b152168325504a7c5187
https://doi.org/10.1007/s12161-016-0651-y
https://doi.org/10.1007/s12161-016-0651-y
Autor:
Kássio M. G. Lima, Julys Pablo Atayde Fernandes, Francisco Antônio da Silva Cunha, Ricardo Chaves Lima, Erika M. G. Melo, Jéssica Oliveira de Brito Lira, Luciano F. Almeida
Publikováno v:
Analytical Methods. 8:7047-7053
This work proposes a simple, rapid and low-cost method for the determination of total furanic aldehyde (TFA, sum of furfural and hydroxymethylfurfural) compounds in Brazilian cachaca samples, based on liquid–liquid extraction followed by UV-vis spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::042698825ebbbb18db0f1bbbb75654f9
https://doi.org/10.1039/c6ay02370c
https://doi.org/10.1039/c6ay02370c
Autor:
Luciano F. Almeida, Stéfani Iury E. Andrade, Marcelo B. Lima, Mário César Ugulino de Araújo, Francisco Antônio da Silva Cunha, Inakã S. Barreto
Publikováno v:
Talanta. 178
A lab-made magnetic-mechanical robotic (MMR) system coupled to a flow-batch analyzer (FBA) for magnetic nanoparticles solid phase extraction (MSPE) is presented. As an illustrative application, an NMR-FBA couple was connected to a graphite furnace at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5aa4467fd1b53de90fc982e56701dad3
https://pubmed.ncbi.nlm.nih.gov/29136838
https://pubmed.ncbi.nlm.nih.gov/29136838
Autor:
Wellington da Silva Lyra, Sergio Luis Costa Ferreira, Josué Carinhanha Caldas Santos, Mario M.S. Junior, Luciano F. Almeida, Francisco Antônio da Silva Cunha, Mário César Ugulino de Araújo, Eduardo A. Lima
Publikováno v:
Talanta. 207:119834
In this paper, a flow-batch analysis (FBA) system, hydride generation (HG), and atomic fluorescence spectrometry (AFS) are coupled for the first time to develop a fast and sensitive FBA–HG–AFS method for automated inorganic antimony speciation in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f362a69d5268a0d6ad612a28d6e625b
https://doi.org/10.1016/j.talanta.2019.04.035
https://doi.org/10.1016/j.talanta.2019.04.035