Search Results - "Pasquini, Celio"

Determination of Cellulose Crystallinity by Terahertz-Time Domain Spectroscopy by Vieira, Francisco Senna, Pasquini, Celio

“…Terahertz-time domain spectroscopy (THz-TDS) has the ability to probe the crystallinity of several materials, due to the interaction of THz radiation with…”
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Comparing the analytical performances of Micro-NIR and FT-NIR spectrometers in the evaluation of acerola fruit quality, using PLS and SVM regression algorithms by Malegori, Cristina, Nascimento Marques, Emanuel José, de Freitas, Sergio Tonetto, Pimentel, Maria Fernanda, Pasquini, Celio, Casiraghi, Ernestina

“…The main goal of this study was to investigate the analytical performances of a state-of-the-art device, one of the smallest dispersion NIR spectrometers on…”
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Near Infrared Spectroscopy: fundamentals, practical aspects and analytical applications by Pasquini, Celio

“…This paper intends to review the basic theory of Near Infrared (NIR) Spectroscopy and its applications in the field of Analytical Science. It is addressed to…”
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Rapid and non-destructive determination of quality parameters in the ‘Tommy Atkins’ mango using a novel handheld near infrared spectrometer by Marques, Emanuel José Nascimento, de Freitas, Sérgio Tonetto, Pimentel, Maria Fernanda, Pasquini, Celio

“…•A new handheld ultra-compact NIR spectrometer was evaluated for mango fruit analysis.•PLS models predicted quality parameters in intact mango with high…”
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Evaluation of a low-cost portable near-infrared spectrophotometer for in situ cocaine profiling by Hespanhol, Maria C., Pasquini, Celio, Maldaner, Adriano O.

“…The potential of a low-cost (∼US$ 1000) portable near-infrared (NIR) spectrophotometer for in situ characterization of seized cocaine samples was evaluated. A…”
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Near infrared spectroscopy: A mature analytical technique with new perspectives – A review by Pasquini, Celio

“…Last decade's advances and modern aspects of near infrared spectroscopy are critically examined and reviewed. Innovative instrumentation, highlighted by…”
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Determination of the isotopic composition of enriched materials using laser ablation molecular isotopic spectrometry: partial least squares and multivariate curve resolution for the determination of 15N content in enriched urea by dos Santos, Miraldo Santa Rosa, Pasquini, Celio

“…A quantitative analytical method based on laser ablation molecular isotopic spectrometry (LAMIS) and multivariate analysis was developed and evaluated for the…”
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Near infrared spectroscopy determination of sucrose, glucose and fructose in sweet sorghum juice by Simeone, Maria Lúcia F., Parrella, Rafael A.C., Schaffert, Robert E., Damasceno, Cynthia M.B., Leal, Michelle C.B., Pasquini, Celio

“…Sweet sorghum is a very robust crop which has the potential to be used in ethanol production due to its high fermentable sugar content present in its stem…”
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A compact and low cost laser induced breakdown spectroscopic system: Application for simultaneous determination of chromium and nickel in steel using multivariate calibration by Barbieri Gonzaga, Fabiano, Pasquini, Celio

“…This work describes a compact and low cost analyzer for laser induced breakdown spectroscopy (LIBS) based on a diode pumped passively Q-switched Nd:LSB…”
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Classification of blue pen ink using infrared spectroscopy and linear discriminant analysis by Silva, Carolina Santos, Borba, Flávia de Souza Lins, Pimentel, Maria Fernanda, Pontes, Marcio José Coelho, Honorato, Ricardo Saldanha, Pasquini, Celio

“…Attenuated total reflectance (ATR) Fourier transform infrared (FTIR) spectroscopy associated to linear discriminant analysis (LDA) was employed to perform…”
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A comprehensive and fast microplastics identification based on near-infrared hyperspectral imaging (HSI-NIR) and chemometrics by Vidal, Cristiane, Pasquini, Celio

“…Microplastic pollution is a global concern theme, and there is still the need for less laborious and faster analytical methods aiming at microplastics…”
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A new detection system for laser induced breakdown spectroscopy based on an acousto-optical tunable filter coupled to a photomultiplier: Application for manganese determination in steel by Gonzaga, Fabiano Barbieri, Pasquini, Celio

“…The development of a new detection system for laser induced breakdown spectroscopy (LIBS), based on a collinear quartz acousto-optical tunable filter (AOTF)…”
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Use of Infrared Spectroscopy and Near Infrared Hyperspectral Images to Evaluate Effects of Different Chemical Agents on PET Bottle Surface by Oliveira, Alianda Dantas de, Silva, Vitor Hugo da, Pimentel, Maria Fernanda, Vinhas, Glória Maria, Pasquini, Celio, Almeida, Yêda Medeiros Bastos de

“…PET - poly (ethylene terephthalate) - bottle surfaces were exposed to chemical agents and evaluated with middle infrared spectroscopy (MIR) and near infrared…”
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Identification of counterfeit drugs using near-infrared spectroscopy by Scafi, S H, Pasquini, C

“…This work was aimed at the investigation of the use of near-infrared spectroscopy (NIRS) for the identification of counterfeit drugs. The identification is…”
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Determination of degree of polymerization of insulating paper using near infrared spectroscopy and multivariate calibration by dos Santos, Edmilson Oliveira, Silva, Andréa Monteiro Santana, Fragoso, Wallace Duarte, Pasquini, Celio, Pimentel, Maria Fernanda

“…A simple alternative method to determine the degree of polymerization (DP) in transformer insulating papers, using near infrared spectroscopy (NIR), was…”
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Feasibility of near-infrared spectroscopy for species identification and parasitological diagnosis of freshwater snails of the genus Biomphalaria (Planorbidae) by Valladares, Vanessa, Pasquini, Célio, Thiengo, Silvana Carvalho, Mello-Silva, Clélia Christina

“…Near Infrared Spectroscopy (NIRS) has been applied in epidemiological surveillance studies of insect vectors of parasitic diseases, such as the Dengue's…”
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Ring-Oven Based Preconcentration Technique for Microanalysis: Simultaneous Determination of Na, Fe, and Cu in Fuel Ethanol by Laser Induced Breakdown Spectroscopy by Cortez, Juliana, Pasquini, Celio

“…The ring-oven technique, originally applied for classical qualitative analysis in the years 1950s to 1970s, is revisited to be used in a simple though highly…”
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A rotational-linear sample probing device to improve the performance of compact near-infrared spectrophotometers by Pasquini, Celio, Hespanhol, Maria C.

“…[Display omitted] •New device allows for representative measurement in near-infrared spectroscopy.•Accessible probing device overcomes heterogeneity effects in…”
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Silicone Sensing Phase for Detection of Aromatic Hydrocarbons in Water Employing Near-Infrared Spectroscopy by Albuquerque, Jackson S, Pimentel, M. Fernanda, Silva, Valdinete L, Raimundo, Ivo M, Rohwedder, Jarbas J. R, Pasquini, Celio

“…The use of silicone for detection of aromatic hydrocarbons in water using near-infrared spectroscopy is proposed. A sensing phase of poly(dimethylsiloxane)…”
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Direct determination of copper in urine using a sol-gel optical sensor coupled to a multicommutated flow system by Jerónimo, Paula C A, Araújo, Alberto N, Montenegro, M Conceição B S M, Pasquini, Celio, Raimundo, Jr, Ivo M

“…In this work, a multicommutated flow system incorporating a sol-gel optical sensor is proposed for direct spectrophotometric determination of Cu(II) in urine…”
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