Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Lucas Caixeta Gontijo"'
Publikováno v:
Enciclopédia Biosfera. 18
Estudos analiticos foram realizados para quantificacao de selenio(IV) com 2,3- diaminonaftaleno (DAN) em solucoes fase unica empregando determinacao espectrofotometrica. As diferentes variaveis que influenciam a reacao entre Se(IV) eDAN foram avaliad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d753ee5aed6eac5c8247ba885037da3
https://doi.org/10.18677/encibio_2021c18
https://doi.org/10.18677/encibio_2021c18
Autor:
Douglas Queiroz Santos, Lígia Rodrigues De Oliveira, Baltazar Vasco Sitoe, Ademar Domingos Viagem Máquina, Waldomiro Borges Neto, Lucas Caixeta Gontijo
Publikováno v:
Analytical Letters. 53:589-605
The use of mid-infrared spectrometry with horizontal attenuated total reflectance and Fourier transform, along with methods of variable selection by intervals, that is, interval partial least-squar...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c98c8fcf16bb93b51ad7c81caba33f5
https://doi.org/10.1080/00032719.2019.1659805
https://doi.org/10.1080/00032719.2019.1659805
Autor:
Sarmento J. Mazivila, Waldomiro Borges Neto, Ronei J. Poppi, Felipe Bachion de Santana, Lucas Caixeta Gontijo
Publikováno v:
Food Analytical Methods. 11:1927-1935
Andiroba oil (Carapa guianensis Aubl) from the Amazonian region is one of the most important oils in popular medicine and cosmetic industry, has a high added value and is liable to adulteration with other cheaper or lower quality oils. Based on these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5a261eeccbd2ff397e67eb79363e523
https://doi.org/10.1007/s12161-017-1142-5
https://doi.org/10.1007/s12161-017-1142-5
Autor:
Douglas Queiroz Santos, Letícia Maria de Souza, Ademar Domingos Viagem Máquina, Lucas Caixeta Gontijo, Waldomiro Borges Neto
Publikováno v:
Analytical Letters. 50:2117-2128
This paper reports a method to simultaneously classify 7% biodiesel and 93% diesel based on vegetable oil as the source of the biodiesel. Mafurra, moringa, and cotton biodiesel blends were characterized by infrared spectroscopy with partial least squ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::476111ae1981f7d3ae123704e1f5d0a5
https://doi.org/10.1080/00032719.2016.1267186
https://doi.org/10.1080/00032719.2016.1267186
Autor:
Ademar Domingos Viagem Máquina, Felipe Bachion de Santana, Baltazar Vasco Sitoe, Lucas Caixeta Gontijo, Douglas Queiroz Santos, Waldomiro Borges Neto
Publikováno v:
Fuel. 191:290-299
In this work, fast and efficient analytical methodologies were developed for quality monitoring of the content of jatropha methyl and ethyl biodiesels in blends with mineral diesel, and to monitor the presence of adulterants using mid-infrared (MIR)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dda2fb3d7424ca58dc9e94d316cdddbf
https://doi.org/10.1016/j.fuel.2016.11.078
https://doi.org/10.1016/j.fuel.2016.11.078
Autor:
Hery Mitsutake, Waldomiro Borges Neto, Sarmento J. Mazivila, Lucas Caixeta Gontijo, Felipe Bachion de Santana, Letícia Maria de Souza
Publikováno v:
Food Chemistry. 209:228-233
Rosehip oil (Rosa eglanteria L.) is an important oil in the food, pharmaceutical and cosmetic industries. However, due to its high added value, it is liable to adulteration with other cheaper or lower quality oils. With this perspective, this work pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::977edc097685c79d7ac0ad7e99314848
https://doi.org/10.1016/j.foodchem.2016.04.051
https://doi.org/10.1016/j.foodchem.2016.04.051
Autor:
Sebastião De Paula Eiras, Karina Silva Nascimento, Lucas Caixeta Gontijo, Alex Magalhães de Almeida, Nunes Antonio Pimenta
Publikováno v:
Conexão Ciência (Online). 9:16-23
A medida do teor de álcool em bebidas é determinada satisfatoriamente usando densímetros ou alcoômetros, pois apresentam resultados rápidos e práticos. Essa determinação pode ser realizada através de cálculos e diagramas de fase sem, contud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ade5a09b2a0c95ebf0d4a2954463afb0
https://doi.org/10.24862/cco.v9i2.281
https://doi.org/10.24862/cco.v9i2.281
Autor:
Sarmento J. Mazivila, Felipe Bachion de Santana, Lucas Caixeta Gontijo, Letícia Maria de Souza, Waldomiro Borges Neto
Publikováno v:
Food Chemistry. 182:35-40
This paper proposes a new method for the quantitative analysis of soybean oil (SO) and sunflower oil (SFO) as adulterants in extra virgin flaxseed oil (EFO) by applying Mid Infrared Spectroscopy (MIR) associated with chemometric technique of Partial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82986ed6f5c0899c64c1d9bbd07f85c5
https://doi.org/10.1016/j.foodchem.2015.02.081
https://doi.org/10.1016/j.foodchem.2015.02.081
Autor:
Hery Mitsutake, Helieder C. Freitas, Douglas Queiroz Santos, Eloiza Guimarães, Lucas Caixeta Gontijo, Waldomiro Borges Neto
Publikováno v:
Journal of Chemometrics. 29:411-419
In this work, mid-infrared spectroscopy and multivariate control charts based on net analyte signal were applied for quality control of B5 blends of biodiesel/diesel (5% biodiesel/95% diesel). Control charts were constructed using instrumental signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82b04fd0b6244002402b2c58a99408df
https://doi.org/10.1002/cem.2720
https://doi.org/10.1002/cem.2720