Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Paulo R. Filgueiras"'
Autor:
Bruno M. M. Siqueira, André L. S. Silva, Gabriely S. Folli, Thalles R. Rosa, Wanderson Romão, Maria F. F. Lelis, Paulo R. Filgueiras, Paulo R. G. Moura
Publikováno v:
Química Nova, Vol 47, Iss 5 (2024)
The article aims to address the use of the theoretical-methodological teaching strategy, Problematized Experimental Activity (PEA), to introduce a method employed in chemometrics, called Principal Component Analysis, through digital images linked to
Externí odkaz:
https://doaj.org/article/d451e9dcc8854a53ab22e7f261136198
Autor:
Marcos V. V. Lyrio, Danieli G. Debona, Nathália dos S. Conceição, Francisco M. Gomes, Alan R. Pereira, Henrique A. Frizzera, Jessica L. Reis, Taila T. Grecco, Bruna C. Pires, Valdemar Lacerda Jr., Eustaquio V. R. Castro, Marsele M. Isidoro, Paulo R. Filgueiras, Wanderson Romão
Publikováno v:
Química Nova, Vol 46, Iss 5, Pp 435-449 (2023)
Food additives are chemical substances added to improve organoleptic characteristics, in this context, there are several synthetic dyes, such as sunset yellow, tartrazine, erioglaucine, allura red, indigo carmine, and new coccine, that can also be id
Externí odkaz:
https://doaj.org/article/e2eebc28567449ae8231389be4f1b8b0
Autor:
Gabriely S. Folli, Layla P. Santos, Francine D. Santos, Pedro H.P. Cunha, Izabela F. Schaffel, Flávia T. Borghi, Iago H.A.S. Barros, André A. Pires, Araceli V.F.N. Ribeiro, Wanderson Romão, Paulo R. Filgueiras
Publikováno v:
Food Chemistry Advances, Vol 1, Iss , Pp 100074- (2022)
Extra-virgin-olive oil, honey, milk, and yogurt have associated high nutritional and commercial value. Tampering/non-conformance in these products can damage consumer's health. Therefore, rigorous quality control over the ingredients purity and decla
Externí odkaz:
https://doaj.org/article/f056297023964bd88531dac255a9e8b8
Autor:
Dandara A. Luz, Anne C. C. Gomes, Naomi K. Simas, Otavio A. Heringer, Wanderson Romão, Betina P. O. Lovatti, Rodrigo Scherer, Paulo R. Filgueiras, Ricardo M. Kuster
Publikováno v:
International Journal of Recycling of Organic Waste in Agriculture, Vol 9, Iss 4, Pp 385-397 (2020)
Purpose This article aims to evaluate the phytotoxic potential of metabolites present in the waste from sugarcane processing industry, such as vinasse, filter cake and bagasse, in order to reuse them as raw materials for the production of natural her
Externí odkaz:
https://doaj.org/article/487b9ff94df64ce69414361d2c0fe882
Autor:
Priscilla C. Santos, Flavia Tosato, Mirelly Cesconetto, Thayná Corrêa, Francine D. Santos, Valdemar Lacerda Jr., André A. Pires, Araceli V. F. N. Ribeiro, Paulo R. Filgueiras, Wanderson Romão
Publikováno v:
Química Nova, Vol 43, Iss 7, Pp 891-900 (2020)
Externí odkaz:
https://doaj.org/article/79bd074495494ddb9e7f2609b21a3599
Autor:
Vitor N. Conceição, Lindamara M. Souza, Bianca B. Merlo, Paulo R. Filgueiras, Ronei J. Poppi, Wanderson Romão
Publikováno v:
Química Nova, Vol 37, Iss 9, Pp 1538-1544 (2014)
Cocaine is usually seized mixed with a wide variety of adulterants such as benzocaine, lidocaine, caffeine, and procaine. The forensic identification of cocaine in these street drug mixtures is normally performed using colorimetric testing kits, but
Externí odkaz:
https://doaj.org/article/7bbdf56c7ed2421584994da5bd8d16e6
Autor:
Milton K. Morigaki, Roberta Q. F. Chimin, Cristina M. dos S. Sad, Paulo R. Filgueiras, Eustaquio V. R. de Castro, Júlio C. M. Dias
Publikováno v:
Química Nova, Vol 33, Iss 3, Pp 607-612 (2010)
The quantity of salts in the crude oils depends on the origin and of the wells production and these salts cause several problems during the transport and the process of refine as corrosions, incrustations and deactivation of the employed catalysts in
Externí odkaz:
https://doaj.org/article/24d61527e7734eddbe481d01ec3e5b62
Autor:
Flavia Tosato, Eliane V. Barros, Danyelle A. Cunha, Francine D. Santos, Thayná Corrêa, Amanda Nunes, Izabella Jastrow, Mylena A. Silverol, Layla U. Pinheiro, Alessandro C. Seabra, Paulo R. Filgueiras, Álvaro C. Neto, Leandro Wang, Ernesto C. Ferreira, Wanderson Romão
Publikováno v:
Química Nova, Vol 43, Iss 2, Pp 155-167
It has been recurring adulterations in fuels (such as gasoline, ethanol and diesel), being necessary the exploration of the use of more modern analytical techniques capable of controlling the quality of these fuels, since some regulated tests may be
Externí odkaz:
https://doaj.org/article/0c4218e6fe5b4c66bf12384eb6709ef5
Autor:
Bruno V. Vittorazzi, Rayana A. Costa, Larissa M. Coelho, Marsele M. Isidoro, Kássio M. G. Lima, Paulo R. Filgueiras, Wanderson Romão
Publikováno v:
Química Nova, Vol 43, Iss 4, Pp 447-454
A new method to identify the authenticity of Brazilian banknotes (R$) is proposed using digital image analysis by a smartphone application, Photometrix®, associated with chemometric tools. Authentic banknotes (n = 4) obtained in local bank and falsi
Externí odkaz:
https://doaj.org/article/3138ef4f409c4dc9a72f4cba7a4b0e76
Autor:
Camila M. de Almeida, Larissa C. Motta, Gabriely S. Folli, Wena D. Marcarini, Camila A. Costa, Ana C. S. Vilela, Valério G. Barauna, Francis L. Martin, Maneesh N. Singh, Luciene C. G. Campos, Nádia L. Costa, Paula F. Vassallo, Andrea R. Chaves, Denise C. Endringer, José G. Mill, Paulo R. Filgueiras, Wanderson Romão
Publikováno v:
Journal of Proteome Research. 21:1868-1875
Rapid identification of existing respiratory viruses in biological samples is of utmost importance in strategies to combat pandemics. Inputting MALDI FT-ICR MS (matrix-assisted laser desorption/ionization Fourier-transform ion cyclotron resonance mas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::216a5ce19c6189e958c5910007bc2bc3
https://doi.org/10.1021/acs.jproteome.2c00148
https://doi.org/10.1021/acs.jproteome.2c00148