Search Results - "Braga, Jez Willian"

Authenticity Identification of Copaiba Oil Using a Handheld NIR Spectrometer and DD-SIMCA by de Oliveira Moreira, Alessandro Cézar, Braga, Jez Willian Batista

“…Copaiba oil (CO) is a non-timber forest product, obtained from the Copaifera genus, used in popular medicine, pharmaceutical, and cosmetic industries. The…”
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Synthesis and evaluation of hybrid molecularly imprinted polymers for selective extraction of saccharin in aqueous medium by Dourado, Camila Santos, Casarin, Fabiana, Braga, Jez Willian Batista, Machado, Fabricio, Dias, Ana Cristi Basile

“…Molecularly imprinted polymers (MIP) are known as high selective sorbent, however, its application in aqueous medium is very limiting. In this way, a new…”
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Profile of explosives's use in ATMs/cash safes robberies in Brazil by Logrado, Lúcio Paulo Lima, Silva, Marielly Nascimento, Laboissiere, João Carlos Ambrósio, Braga, Jez Willian Batista

“…This retrospective study reports data obtained by the Federal Police's National Institute of Criminalistics (INC‐PF) relating to chemical analysis aimed at…”
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Optimization of the Functional Characteristics of Cleaning Products Through Experimental Design by Ochoa, Douglas Herlemann, Braga, Jez Willian Batista, Machado, Fabricio

“…To optimize a benchmark commercial dishwashing formulation, this paper presents a fractional factorial design procedure coupled with a mixture design in order…”
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Comparison of univariate and multivariate calibration for the determination of micronutrients in pellets of plant materials by laser induced breakdown spectrometry by Braga, Jez Willian Batista, Trevizan, Lilian Cristina, Nunes, Lidiane Cristina, Rufini, Iolanda Aparecida, Santos, Dário, Krug, Francisco José

“…The application of laser induced breakdown spectrometry (LIBS) aiming the direct analysis of plant materials is a great challenge that still needs efforts for…”
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Discrimination of whisky brands and counterfeit identification by UV–Vis spectroscopy and multivariate data analysis by Martins, Angélica Rocha, Talhavini, Márcio, Vieira, Maurício Leite, Zacca, Jorge Jardim, Braga, Jez Willian Batista

“…•Fast and efficient discrimination method of different brands of whisky.•Correct classification of whisky brands by UV spectroscopy and PLS-DA.•Effective…”
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Rapid Purity Determination of Copaiba Oils by a Portable NIR Spectrometer and PLSR by de Oliveira Moreira, Alessandro Cézar, de Lira Machado, Angelo Henrique, de Almeida, Fernanda Vasconcelos, Braga, Jez Willian Batista

“…Copaiba oil is a non-timber forest product utilized in popular medicine, in addition to the pharmaceutical, cosmetic, and food industries. Brazil is a chief…”
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Identification of NBOMe and NBOH in blotter papers using a handheld NIR spectrometer and chemometric methods by Magalhães, Laiz de Oliveira, Arantes, Luciano Chaves, Braga, Jez Willian Batista

“…N-benzylphenethylamines derivatives, such as NBOMe and NBOH series, are potent hallucinogen drugs that are usually sold in the illicit market as blotter papers…”
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Optimization of a saccharin molecularly imprinted solid-phase extraction procedure and evaluation by MIR hyperspectral imaging for analysis of diet tea by HPLC by Dourado, Camila Santos, Domingues, Izabella Fernanda F., de Oliveira Magalhães, Laiz, Casarin, Fabiana, Ribeiro, Millene Lopes, Braga, Jez Willian Batista, Dias, Ana Cristi Basile

“…[Display omitted] •Direct HSI-MIR chemometric analysis in molecular imprinted polymers.•Homogeneity analysis of saccharin in the MIP by HIS-MIR and PLSR.•New…”
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Maximum likelihood unfolded principal component regression with residual bilinearization (MLU-PCR/RBL) for second-order multivariate calibration by Batista Braga, Jez Willian, Allegrini, Franco, Olivieri, Alejandro C.

“…A maximum likelihood model is described for performing second-order multivariate calibration with unfolded principal component regression with residual…”
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Variable Selection, Outlier Detection, and Figures of Merit Estimation in a Partial Least-Squares Regression Multivariate Calibration Model. A Case Study for the Determination of Quality Parameters in the Alcohol Industry by Near-Infrared Spectroscopy by Valderrama, Patrícia, Braga, Jez Willian B., Poppi, Ronei Jesus

“…Practical implementation of multivariate calibration models has been limited in several areas due to the requirement of appropriate development and validation…”
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Determination of viscosity index in lubricant oils by infrared spectroscopy and PLSR by Braga, Jez Willian B., Junior, Araci Araújo dos Santos, Martins, Ingrid S.

“…[Display omitted] •Accurate determination of viscosity index in lubricants by infrared spectroscopy.•The method was applied in a wide range and for 81…”
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Determination of vegetable oils and fats adulterants in diesel oil by high performance liquid chromatography and multivariate methods by Brandão, Luiz Filipe Paiva, Braga, Jez Willian Batista, Suarez, Paulo Anselmo Ziani

“…► Determination of adulterations of diesel by vegetable oils or fat are proposed. ► Four different vegetable oils and two vegetable fats were studied. ► HPLC…”
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Long-term storage for reanalysis purposes: A stability study of extracts from post-explosion/burning residues of fuel-oxidizer explosive mixtures by Paulo Lima Logrado, Lúcio, Willian Batista Braga, Jez

“…[Display omitted] •Feasibility study of long-term storage for post-explosion residue extracts.•Evaluation of sample extracts stability by 24 months.•Explosive…”
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Detection of Counterfeit Durateston® Using Fourier Transform Infrared Spectroscopy and Partial Least Squares - Discriminant Analysis by Neves, Diana, Talhavini, Márcio, Braga, Jez Willian, Zacca, Jorge, Caldas, Eloisa

“…Medicines containing anabolic steroids are one of the main targets for counterfeiting worldwide, including Brazil. The aim of this work was to propose a method…”
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DISCRIMINATION BETWEEN SIMILAR WOODS BY MOLECULAR FLUORESCENCE AND PARTIAL LEAST SQUARES by Oliveira, Elian Meneses, Braga, Jez Willian Batista, Costa, Alexandre Florian da

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Evaluation of the number of factors needed for residual bilinearization in BLLS and UPLS models to achieve the second-order advantage by Braga, Jez Willian Batista, Carneiro, Renato Lajarim, Poppi, Ronei Jesus

“…Bilinear least squares (BLLS) and unfold partial least squares (UPLS) are second-order multivariate calibration methods, which require the application of the…”
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Figures of merit for the determination of the polymorphic purity of carbamazepine by infrared spectroscopy and multivariate calibration by Braga, Jez Willian B, Poppi, Ronei Jesus

“…Polymorphism is an important property in the quality control of pharmaceutical products. In this regard, partial least squares regression and the net…”
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Determination of pesticides and metabolites in wine by high performance liquid chromatography and second-order calibration methods by Braga, Jez Willian B., Bottoli, Carla B.G., Jardim, Isabel C.S.F., Goicoechea, Héctor C., Olivieri, Alejandro C., Poppi, Ronei J.

“…The models parallel factor analysis (PARAFAC) and the recently introduced bilinear least squares (BLLS) were applied to develop second-order calibration…”
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Multivariate curve resolution of pH gradient flow injection mixture analysis with correction of the Schlieren effect by Carneiro, Renato L, Braga, Jez Willian B, Poppi, Ronei J, Tauler, Romà

“…Multivariate curve resolution using alternating least squares (MCR-ALS) was used to quantify ascorbic (AA) and acetylsalicylic (ASA) acids in four…”
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