Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Neirivaldo Cavalcante da Silva"'
Autor:
Josélia Alves de Almeida Silva, Michelle de Souza Lemos, Neirivaldo Cavalcante da Silva, Kelly das Graças Fernandes Dantas, Heronides Adonias Dantas Filho
Publikováno v:
Química Nova, Vol 47, Iss 6 (2024)
The present study investigated the sources of variability in the water quality of surface springs that supply the Metropolitan Region of Belém (Pará, Brazil), as well as the treated water produced by the main water treatment station in the region.
Externí odkaz:
https://doaj.org/article/1114ccbf6f664e5686fcf959487b9ca0
Autor:
Neirivaldo Cavalcante da Silva, Celio Pasquini, Márcio das Virgens Rebouças, José Manuel Amigo, Ana Rosa C. G. Massa, Daniela Domingos, Maria Fernanda Pimentel
Publikováno v:
Fuel. 243:381-389
This work addresses the industrial process of compounding automotive gasoline by a controlled blending of feedstock hydrocarbon streams deriving from different stages of the cracking and refining process of naphtha. In this process, gasoline quality
Autor:
José Manuel Amigo, Neirivaldo Cavalcante da Silva, Leandro de Moura França, Maria Fernanda Pimentel, Manel Bautista
Publikováno v:
Chemometrics and Intelligent Laboratory Systems. 180:15-25
This paper demonstrates that the use of the homogeneity curve approach introduced in the first part of this work for assessing the unique homogeneity percentage (%H) can also be applied in single channel non-binary (SCNB) images (a.k.a grayscale imag
Autor:
Ricardo S. Honorato, Fernanda Araújo Honorato, Adriano O. Maldaner, Márcio Talhavini, Neirivaldo Cavalcante da Silva, Maria Fernanda Pimentel
Publikováno v:
Forensic Science International. 253:33-42
The smuggling of products across the border regions of many countries is a practice to be fought. Brazilian authorities are increasingly worried about the illicit trade of fuels along the frontiers of the country. In order to confirm this as a crime,
Publikováno v:
Microchemical Journal. 150:104155
Diesel engines are responsible for high NOx emission rates in the atmosphere. The urea-selective catalytic reduction (SCR) system is one of the most promising techniques for NOx emission control. The SCR system uses a urea solution known as Diesel Ex
Autor:
Josivan Pedro da Silva, Neirivaldo Cavalcante da Silva, Luiz Stragevitch, Rafaella Figueiredo Sales, Higor Henrique de França, Maria Fernanda Pimentel
Publikováno v:
Fuel. 254:115680
In this work, the use of a handheld near-infrared spectrometer (MicroNIR) for on-line monitoring of biodiesel production in a continuous process is described. The process consists of a laboratory scale reactive distillation column where transesterifi
Autor:
Ricardo S. Honorato, Maria Fernanda Pimentel, Maria Luisa Cervera, Neirivaldo Cavalcante da Silva, Miguel de la Guardia, Salvador Garrigues
Publikováno v:
Journal of forensic sciences. 60(5)
There is an increasing demand for herbal medicines in weight loss treatment. Some synthetic chemicals, such as sibutramine (SB), have been detected as adulterants in herbal formulations. In this study, two strategies using near infrared (NIR) spectro