Maria Fernanda Pimentel

Prof. Dr. Maria Fernanda Pimentel

orcid

Research Focus & Metrics

Academic Career Length

30Years (1997-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 April 2017 in Talanta
Verified
Journal Article
Closed access
CMCristina Malegori
Cristina Malegori
EMEmanuel José Nascimento Marques
Emanuel José Nascimento Marques
SFSergio Tonetto de Freitas
Sergio Tonetto de Freitas
MPMaria Fernanda Pimentel
Maria Fernanda Pimentel
CPCelio Pasquini
Celio Pasquini
ECErnestina Casiraghi
Ernestina Casiraghi

1 April 2016 in Food Chemistry
Verified
Journal Article
Closed access
EMEmanuel José Nascimento Marques
Emanuel José Nascimento Marques
SFSérgio Tonetto de Freitas
Sérgio Tonetto de Freitas
MPMaria Fernanda Pimentel
Maria Fernanda Pimentel
CPCelio Pasquini
Celio Pasquini

1 April 2006 in Microchemical Journal
Verified
Journal Article
Closed access
MPMaria Fernanda Pimentel
Maria Fernanda Pimentel
GRGrece M.G.S. Ribeiro
Grece M.G.S. Ribeiro
RCRoseniraSerpa da Cruz
RoseniraSerpa da Cruz
LSLuiz Stragevitch
Luiz Stragevitch
JPJose Geraldo Andrade Pacheco
Jose Geraldo Andrade Pacheco
Leonardo Sena Gomes TeixeiraLeonardo Sena Gomes Teixeira
Leonardo Sena Gomes Teixeira

1 September 2019 in Colloids and Surfaces A: Physicochemical and Engineering Aspects
Verified
Journal Article
Closed access
RFRafael Fernandes
Rafael Fernandes
IRIvo M. Raimundo
Ivo M. Raimundo
MPMaria Fernanda Pimentel
Maria Fernanda Pimentel

23 July 2014 in The Analyst
Verified
Journal Article
Closed access
PDF file
CSCarolina S. Silva
Carolina S. Silva
MPMaria Fernanda Pimentel
Maria Fernanda Pimentel
RHRicardo S. Honorato
Ricardo S. Honorato
CPCelio Pasquini
Celio Pasquini
JPJosé M. Prats-Montalbán
José M. Prats-Montalbán
Alberto J. Ferrer-RiquelmeAlberto J. Ferrer-Riquelme
Alberto J. Ferrer-Riquelme
Hyperspectral images in the near infrared range (HSI-NIR) were evaluated as a nondestructive method to detect fraud in documents. Three different types of typical forgeries were simulated by (a) obliterating text, (b) adding text and (c) approaching the crossing lines problem. The simulated samples were imaged in the range of 928–2524 nm with spectral and spatial resolutions of 6.3 nm and 10 μm, respectively. After data pre-processing, different chemometric techniques were evaluated for each type of forgery. Principal component analysis (PCA) was performed to elucidate the first two types of adulteration, (a) and (b). Moreover, Multivariate Curve Resolution–Alternating Least Squares (MCR-ALS) was used in an attempt to improve the results of the type (a) obliteration and type (b) adding text problems. Finally, MCR-ALS and Partial Least Squares–Discriminant Analysis (PLS-DA), employed as a variable selection tool, were used to study the type (c) forgeries, i.e. crossing lines problem. Type (a) forgeries (obliterating text) were successfully identified in 43% of the samples using both the chemometric methods (PCA and MCR-ALS). Type (b) forgeries (adding text) were successfully identified in 82% of the samples using both the methods (PCA and MCR-ALS). Finally, type (c) forgeries (crossing lines) were successfully identified in 85% of the samples. The results demonstrate the potential of HSI-NIR associated with chemometric tools to support document forgery identification.

1 July 2013 in Microchemical Journal
Verified
Journal Article
Closed access
CSCarolina Santos Silva
Carolina Santos Silva
FBFlávia de Souza Lins Borba
Flávia de Souza Lins Borba
MPMaria Fernanda Pimentel
Maria Fernanda Pimentel
MPMarcio José Coelho Pontes
Marcio José Coelho Pontes
RHRicardo Saldanha Honorato
Ricardo Saldanha Honorato
CPCelio Pasquini
Celio Pasquini