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Dr. Adilson Ben Costa
Universidade de Santa Cruz do Sul

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Research Keywords & Expertise

0 Analytical Chemistry
0 Environmental Data Analysis
0 Digital Image Analysis
0 Industrial process analysis
0 Chemometrics and data science

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Analytical Chemistry
Digital Image Analysis

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Journal article
Published: 25 June 2021 in Journal of Sensor and Actuator Networks
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The present work proposed a low-cost portable device as an enabling technology for agriculture using multispectral imaging and machine learning in soil texture. Clay is an important factor for the verification and monitoring of soil use due to its fast reaction to chemical and surface changes. The system developed uses the analysis of reflectance in wavebands for clay prediction. The selection of each wavelength is performed through an LED lamp panel. A NoIR microcamera controlled by a Raspberry Pi device is employed to acquire the image and unfold it in RGB histograms. Results showed a good prediction performance with R2 of 0.96, RMSEC of 3.66% and RMSECV of 16.87%. The high portability allows the equipment to be used in a field providing strategic information related to soil sciences.

ACS Style

Gilson Helfer; Jorge Barbosa; Douglas Alves; Adilson da Costa; Marko Beko; Valderi Leithardt. Multispectral Cameras and Machine Learning Integrated into Portable Devices as Clay Prediction Technology. Journal of Sensor and Actuator Networks 2021, 10, 40 .

AMA Style

Gilson Helfer, Jorge Barbosa, Douglas Alves, Adilson da Costa, Marko Beko, Valderi Leithardt. Multispectral Cameras and Machine Learning Integrated into Portable Devices as Clay Prediction Technology. Journal of Sensor and Actuator Networks. 2021; 10 (3):40.

Chicago/Turabian Style

Gilson Helfer; Jorge Barbosa; Douglas Alves; Adilson da Costa; Marko Beko; Valderi Leithardt. 2021. "Multispectral Cameras and Machine Learning Integrated into Portable Devices as Clay Prediction Technology." Journal of Sensor and Actuator Networks 10, no. 3: 40.

Review article
Published: 25 June 2021 in Ecological Indicators
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Research conducted on an area of the deciduous seasonal forest at 20 sampling sites (headwaters and riparian areas), belonging to Project “Water Guardian” in the Andreas Stream Hydrographic Basin, RS, Brazil, and established the Payment for Environmental Services (PES). The research aimed at determing the floristic groups that characterize the study area, quantifying the species phytosociological parameters and their relationship with the studied areas. At each sampling site, we allocated a 10 × 10 m permanent sampling units (plots) and counting individuals until the species/plots curve stabilization. All forest individuals with a circumference ≥ 15 cm at 1.40 m above the ground level were inventoried. Statistical differences established using the nonparametric Kruskall-Wallis statistical test, followed by the Mann-Whitney paired comparisons test for multiple comparisons (α = 5%). Aiming at grouping the species according to their Importance Value Index (IVI) similarities, we applied the cluster analysis based on Ward's method. The results indicated 170 significative plots, which sampled 3,774 individuals distributed in 101 species, including 84 genera and 36 families. Three ecological groups detected, being group 1 (G-1) characterized by presenting the highest mean (±standard deviation) value of IVI equal to 4.5 ± 1.9%, and showing significant differences when compared to the other groups (p < 0.05), highlighting Nectandra megapotamica (Spreng.) Mez as the most important species (IVI = 7.5 ± 3.8%). Thus, the plant species belonging to G-1 are directly associated with dispersing agent, which corresponds exclusively to animals, being the main food sources for the vast majority of avifauna and mastofauna in the region, contributing to its rapid dispersal, apart of being plants of fast growth, characterizing the forest physiognomy of the study region. Chemical, physical and microbiological monitoring of water quality prior to the implementation of PES, compared with recent studies carried out in these headwaters, demonstrated the efficiency of PES for improving water quality, considering that the headwaters in the Andreas Basin showed increasing water quality levels up to 73%, characterized as ”waters of good quality“. These results highlight PES as an important environment public policy tool for sustainable development.

ACS Style

Nilmar Azevedo de Melo; Dionei Minuzzi Delevati; Adilson Ben da Costa; Eduardo A. Lobo. The use of phytosociology to evaluate the efficiency of headwater preservation areas in the Andreas Stream Hydrographic Basin, RS, Brazil. Ecological Indicators 2021, 129, 107904 .

AMA Style

Nilmar Azevedo de Melo, Dionei Minuzzi Delevati, Adilson Ben da Costa, Eduardo A. Lobo. The use of phytosociology to evaluate the efficiency of headwater preservation areas in the Andreas Stream Hydrographic Basin, RS, Brazil. Ecological Indicators. 2021; 129 ():107904.

Chicago/Turabian Style

Nilmar Azevedo de Melo; Dionei Minuzzi Delevati; Adilson Ben da Costa; Eduardo A. Lobo. 2021. "The use of phytosociology to evaluate the efficiency of headwater preservation areas in the Andreas Stream Hydrographic Basin, RS, Brazil." Ecological Indicators 129, no. : 107904.

Preprint
Published: 26 May 2021
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The present work proposed a low-cost portable device as an enabling technology for Smart Farms using multispectral imaging and Machine Learning in soil texture. Clay is an important factor for the verification and monitoring of soil use due to its fast reaction to chemical and surface changes. The system developed uses the analysis of reflectance in wavebands for clay prediction. The selection of each wavelength is performed through an LED lamp panel. A NoIR microcamera controlled by a Raspberry Pi device is employed to acquire the image and unfold it in RGB histograms. Results showed an good prediction performance with R2 of 0.96, RMSEC of 3.66% and RMSECV of 16.87%. The high portability allows the equipment to be used in a field providing strategic information related to soil sciences.

ACS Style

Gilson Augusto Helfer; Jorge Luis Victoria Barbosa; Douglas Alves; Adilson Ben da Costa; Marko Beko; Valderi Reis Quietinho Leithardt. Multispectral Cameras and Machine Learning integrated into Portable Devices as Enabling Technology for Smart Farms. 2021, 1 .

AMA Style

Gilson Augusto Helfer, Jorge Luis Victoria Barbosa, Douglas Alves, Adilson Ben da Costa, Marko Beko, Valderi Reis Quietinho Leithardt. Multispectral Cameras and Machine Learning integrated into Portable Devices as Enabling Technology for Smart Farms. . 2021; ():1.

Chicago/Turabian Style

Gilson Augusto Helfer; Jorge Luis Victoria Barbosa; Douglas Alves; Adilson Ben da Costa; Marko Beko; Valderi Reis Quietinho Leithardt. 2021. "Multispectral Cameras and Machine Learning integrated into Portable Devices as Enabling Technology for Smart Farms." , no. : 1.

Journal article
Published: 08 April 2021 in Revista Jovens Pesquisadores
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Com o aumento da demanda por métodos que seguem os princípios da química analítica verde e devido a necessidade de maior produtividade das áreas cultivadas, novas técnicas de análise em tecido vegetal têm sido estudadas. Ultimamente, o uso da espectroscopia molecular vem se destacando, principalmente por apresentar resposta rápida em diversos tipos de análises, além de apresentar gastos significativamente menores em relação a outros métodos convencionais de laboratório. Assim, o presente estudo tem o objetivo de avaliar o uso da espectroscopia no infravermelho próximo aliado a métodos quimiométricos, para análise de nitrogênio em tecido vegetal. Para tanto, espectros de infravermelho na faixa de 960-2.400 nm de diversas espécies, foram obtidos a partir de uma mesa auto-amostradora. O equipamento produz um espectro de varredura com área de superfície de 4 cm2, na região entre 450-2450 nm, com capacidade de 40 amostras e frequência analítica da ordem 6 amostras por minuto. Os modelos de calibração foram realizados utilizando o software SOLO+MIA (Eigenvector Research, Inc), 8.6.1, com diferentes técnicas de pré-tratamentos dos espectros. Os resultados de concentração de nitrogênio não diferiram estatisticamente (p = 0,987) daqueles obtidos pelo método oficial. O modelo desenvolvido apresentou os seguintes erros, RMSEC 1,25 g kg-1; RMSECV 2,22 g kg-1 e R2 cal 0,986. Deste modo, observa-se que os resultados foram satisfatórios, legitimando que é possível o uso de espectroscopia NIR para estes tipos de análise.

ACS Style

Luiza Baumann; Eduarda Ferreira Pessel; Cristiane Pappis; Letícia Ana Fischborn; Marcia Librelotto; Roberta Oliveira Santos; Ronaldo Bastos dos Santos; Gilson Augusto Helfer; Adilson Ben da Costa. SISTEMA AUTOMATIZADO PARA ANÁLISE DIRETA DE TECIDO VEGETAL POR ESPECTROSCOPIA MOLECULAR. Revista Jovens Pesquisadores 2021, 10, 44 -52.

AMA Style

Luiza Baumann, Eduarda Ferreira Pessel, Cristiane Pappis, Letícia Ana Fischborn, Marcia Librelotto, Roberta Oliveira Santos, Ronaldo Bastos dos Santos, Gilson Augusto Helfer, Adilson Ben da Costa. SISTEMA AUTOMATIZADO PARA ANÁLISE DIRETA DE TECIDO VEGETAL POR ESPECTROSCOPIA MOLECULAR. Revista Jovens Pesquisadores. 2021; 10 (2):44-52.

Chicago/Turabian Style

Luiza Baumann; Eduarda Ferreira Pessel; Cristiane Pappis; Letícia Ana Fischborn; Marcia Librelotto; Roberta Oliveira Santos; Ronaldo Bastos dos Santos; Gilson Augusto Helfer; Adilson Ben da Costa. 2021. "SISTEMA AUTOMATIZADO PARA ANÁLISE DIRETA DE TECIDO VEGETAL POR ESPECTROSCOPIA MOLECULAR." Revista Jovens Pesquisadores 10, no. 2: 44-52.

Journal article
Published: 01 January 2021 in Journal of the Brazilian Chemical Society
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ACS Style

Adilson Da Costa; Gilson Helfer; Jorge Barbosa; Iberê Teixeira; Roberta Santos; Ronaldo Dos Santos; Mônica Voss; Sandra Schlessner; Juliano Barin. PhotoMetrix UVC: A New Smartphone-Based Device for Digital Image Colorimetric Analysis Using PLS Regression. Journal of the Brazilian Chemical Society 2021, 1 .

AMA Style

Adilson Da Costa, Gilson Helfer, Jorge Barbosa, Iberê Teixeira, Roberta Santos, Ronaldo Dos Santos, Mônica Voss, Sandra Schlessner, Juliano Barin. PhotoMetrix UVC: A New Smartphone-Based Device for Digital Image Colorimetric Analysis Using PLS Regression. Journal of the Brazilian Chemical Society. 2021; ():1.

Chicago/Turabian Style

Adilson Da Costa; Gilson Helfer; Jorge Barbosa; Iberê Teixeira; Roberta Santos; Ronaldo Dos Santos; Mônica Voss; Sandra Schlessner; Juliano Barin. 2021. "PhotoMetrix UVC: A New Smartphone-Based Device for Digital Image Colorimetric Analysis Using PLS Regression." Journal of the Brazilian Chemical Society , no. : 1.

Journal article
Published: 28 October 2020 in Analytical Chemistry
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In this work, the in-tip thermal infrared enthalpimetry (in-tip TIE) method is proposed for fast enthalpimetric analysis. In this method, the reactions inside the tips of a multichannel pipette were combined with temperature monitoring by an infrared camera. The filter paper was used inside the tips to retain reagents as solutions (wetted paper mode) or as solids (dried paper mode) to perform neutralization, redox, or precipitation reactions. The dried reagents inside the tips were obtained by oven drying a solution retained in the filter paper. The determination of the total acidity of the vinegar, ascorbic acid in vitamin C tablets, and chloride in soy sauces and saline inhalation solutions was performed as examples of the application of the proposed method. The agreement with reference methods ranged from 98 to 107%. The use of reagents dried inside the tip was feasible, leading to a simple aspiration of sample solution within the 12 tips of the pipette to perform a rapid analysis (1 min). Therefore, up to 720 measurements in 1 h were feasible for in-tip TIE over up to 12 measurements for the reference methods. Moreover, miniaturization reduced reagent consumption and residue generation. For example, for in-tip TIE, only 3.6 mL of residues was generated (n = 12) over 60-240 mL in reference methods (n = 3). Contrarily to other TIE methods, no microplates or stirring was required, opening possibilities for field analysis since the multichannel pipette and the infrared camera are both operated with batteries.

ACS Style

Alessandra Stangherlin Oliveira; Sandra Kunde Schlesner; Mônica Voss; Adilson Ben Da Costa; Erico Marlon Moraes Flores; Juliano Smanioto Barin. Combining In-Tip Reaction and Infrared Thermal Imaging for Fast and Portable Enthalpimetric Analysis. Analytical Chemistry 2020, 92, 14959 -14966.

AMA Style

Alessandra Stangherlin Oliveira, Sandra Kunde Schlesner, Mônica Voss, Adilson Ben Da Costa, Erico Marlon Moraes Flores, Juliano Smanioto Barin. Combining In-Tip Reaction and Infrared Thermal Imaging for Fast and Portable Enthalpimetric Analysis. Analytical Chemistry. 2020; 92 (22):14959-14966.

Chicago/Turabian Style

Alessandra Stangherlin Oliveira; Sandra Kunde Schlesner; Mônica Voss; Adilson Ben Da Costa; Erico Marlon Moraes Flores; Juliano Smanioto Barin. 2020. "Combining In-Tip Reaction and Infrared Thermal Imaging for Fast and Portable Enthalpimetric Analysis." Analytical Chemistry 92, no. 22: 14959-14966.

Special issue research article
Published: 21 September 2020 in Journal of Chemometrics
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This study aims to develop, evaluate, and optimize the application of near‐infrared spectroscopy (NIR) autosampler device equipped with a fiber‐optic probe associated with chemometric methods for the fast quantification of routine chemical constituents such as total alkaloids, reducing sugars, nitrate, and ammonia in tobacco. For this purpose, an NIR autosampler device with capacity for 40 samples was used. The spectra were collected in the range of 950 to 2,500 nm, with three spins on the sample, a 3.0‐cm2 sample scanning area, and 2.0 ± 0.2 mm distance between the fiber‐optic probe and the sample. Four partial least‐squares (PLS) models were developed, and different preprocessing methods were investigated. The predicted results were compared with those obtained from the reference method (continuous‐flow analysis), and root mean square error of prediction values of 0.31%, 1.27%, 0.47%, and 0.026% were obtained for total alkaloids, reducing sugars, nitrate, and ammonia, respectively. The proposed method performed well for the analysis of total alkaloids and reducing sugars with an appropriate goodness‐of‐fit and fair precision. In conclusion, considering the performance of the regression models and the associated environmental and economic advantages, the application of NIR spectrometer autosampler device equipped with a fiber‐optic probe associated with a PLS and synergy interval PLS algorithms cannot replace the reference method, but it is a promising tool for tobacco monitoring.

ACS Style

Gabrielle Fernanda Zimmer; Roberta Oliveira Santos; Iberê Damé Teixeira; Rosana De Cassia De Souza Schneider; Gilson Augusto Helfer; Adilson Ben Da Costa. Rapid quantification of constituents in tobacco by NIR fiber‐optic probe. Journal of Chemometrics 2020, 34, 1 .

AMA Style

Gabrielle Fernanda Zimmer, Roberta Oliveira Santos, Iberê Damé Teixeira, Rosana De Cassia De Souza Schneider, Gilson Augusto Helfer, Adilson Ben Da Costa. Rapid quantification of constituents in tobacco by NIR fiber‐optic probe. Journal of Chemometrics. 2020; 34 (12):1.

Chicago/Turabian Style

Gabrielle Fernanda Zimmer; Roberta Oliveira Santos; Iberê Damé Teixeira; Rosana De Cassia De Souza Schneider; Gilson Augusto Helfer; Adilson Ben Da Costa. 2020. "Rapid quantification of constituents in tobacco by NIR fiber‐optic probe." Journal of Chemometrics 34, no. 12: 1.

Journal article
Published: 08 September 2020 in Águas Subterrâneas
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A desfluoretação de águas com excesso de íons fluoreto é fundamental para a saúde pública, visto que de acordo com a Portaria de Consolidação número 05 de 2017 do Ministério da Saúde, a ingestão de água com concentrações de flúor acima de 1,5 mg L-1, pode causar fluorose dentária em crianças. Dentre as técnicas empregadas para a desfluoretação, o método de adsorção usando carvão ativado de osso é um dos mais utilizados. Assim, esta pesquisa teve como objetivo determinar a eficácia do carvão ativado de osso bovino, bem como do carvão vegetal e mineral para a desfluoretação de água, utilizando ferramentas quimiométricas para identificar possíveis adulterações no carvão ativado de osso. Assim, um planejamento fatorial foi realizado para misturar três componentes e testes de adsorção. A espectroscopia no infravermelho próximo (NIRS, do inglês Near Infrared Spectroscopy) foi usada para construir um modelo de análise discriminante por mínimos quadrados parciais (PLS-DA, do inglês Discriminant Analysis by Partial Least Squares). Os resultados mostraram que o carvão ativado de osso é o material mais eficiente para desfluoretação, com capacidade de adsorção de 1,21 ± 0,06 mg g-1 (n = 3), significativamente superior à capacidade de adsorção do carvão vegetal e mineral (p < 0,05). Adulterações no carvão ativado de osso bovino foram identificadas por meio da análise discriminante, indicando que o NIRS-PLS-DA é uma alternativa eficiente para a caracterização e identificação desses adsorventes para sistemas de tratamento de água.

ACS Style

Cristiane Pappis; Marcia Librelotto; Luiza Baumann; Rosane Bertuzzo; Ronaldo Bastos Dos Santos; Roberta Oliveira Santos; Eduardo Alexis Lobo; Adilson Ben Da Costa. Identificação de adulterações no carvão ativado de osso utilizado na desfluoretação de águas subterrâneas por NIRS-PLS-DA. Águas Subterrâneas 2020, 34, 358 -366.

AMA Style

Cristiane Pappis, Marcia Librelotto, Luiza Baumann, Rosane Bertuzzo, Ronaldo Bastos Dos Santos, Roberta Oliveira Santos, Eduardo Alexis Lobo, Adilson Ben Da Costa. Identificação de adulterações no carvão ativado de osso utilizado na desfluoretação de águas subterrâneas por NIRS-PLS-DA. Águas Subterrâneas. 2020; 34 (3):358-366.

Chicago/Turabian Style

Cristiane Pappis; Marcia Librelotto; Luiza Baumann; Rosane Bertuzzo; Ronaldo Bastos Dos Santos; Roberta Oliveira Santos; Eduardo Alexis Lobo; Adilson Ben Da Costa. 2020. "Identificação de adulterações no carvão ativado de osso utilizado na desfluoretação de águas subterrâneas por NIRS-PLS-DA." Águas Subterrâneas 34, no. 3: 358-366.

Journal article
Published: 11 July 2020 in Computers and Electronics in Agriculture
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The application of sophisticated sensors to measure soil composition and plant needs are a tendence in precision agriculture. In any case, prediction models are built using machine learning algorithms. The goal is to make farming more efficient and productive with minimal impact on the environment. The present article proposes an architectural model that evaluates the soil’s fertility and productivity through context history with Partial Least Squares Regression. Also productivity prediction of a wheat planted area was performed using climatic events between the years of 2001 and 2015 resulting a mean square error of calibration (RMSEC) of 0.20 T/ha, mean square errors of cross-validation of 0.54 T/ha with a Pearson coefficient (R2) of 0.9189. For the prediction of organic matter and clay, the best results obtained were a R2 of 0.9345, RMSECV of 0.54% and R2 of 0.9239, RMSECV of 5.28%, respectively.

ACS Style

Gilson Augusto Helfer; Jorge Luis Victória Barbosa; Ronaldo dos Santos; Adilson Ben da Costa. A computational model for soil fertility prediction in ubiquitous agriculture. Computers and Electronics in Agriculture 2020, 175, 105602 .

AMA Style

Gilson Augusto Helfer, Jorge Luis Victória Barbosa, Ronaldo dos Santos, Adilson Ben da Costa. A computational model for soil fertility prediction in ubiquitous agriculture. Computers and Electronics in Agriculture. 2020; 175 ():105602.

Chicago/Turabian Style

Gilson Augusto Helfer; Jorge Luis Victória Barbosa; Ronaldo dos Santos; Adilson Ben da Costa. 2020. "A computational model for soil fertility prediction in ubiquitous agriculture." Computers and Electronics in Agriculture 175, no. : 105602.

Special issue research article
Published: 05 July 2020 in Journal of Chemometrics
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Near‐infrared spectroscopy (NIR) associated with chemometric methods has been widely used in the determination of various compounds, as it is a fast, nondestructive, and analytical method with minimal sample preparation and universal application. In addition, the trend of miniaturization has allowed the development of new portable equipment, increasing the possibilities of point‐of‐use analysis at low cost. In this context, the objective of this study was to develop a portable analytical methodology using a low‐cost DLP NIRscan Nano spectrophotometer (Texas Instruments®) connected to a smartphone for data storage. For this, an app called NanoMetrix was developed, created natively for Android from Android Studio IDE, according to a software design standard known as Model‐View‐ViewModel (MVVM). To demonstrate the applicability of the method, 36 samples of plant tissue were analyzed to determine total nitrogen content. The calibration models were compared to those obtained with the SOLO+MIA software (Eigenvector Research, Inc.), 8.6.1. The results presented root mean square error of calibration (RMSEC) 1.90 and 1.82 g kg−1, root mean square error of prediction (RMSEP) 2.00 and 1.97 g kg−1, and R 2pred 0.973 and 0.975, for the NanoMetrix application and the SOLO+MIA software, respectively. Therefore, the results indicate that the NanoMetrix integrated with the portable spectrophotometer, besides the acquisition of spectra, allows the processing of data in the field and reducing the time for the analysis and obtaining the results. Also, the chemometric associated with the NIR spectroscopy is a viable alternative to replace, or complement, the methods used for nitrogen determination.

ACS Style

Luiza Baumann; Marcia Librelotto; Cristiane Pappis; Gilson A. Helfer; Roberta O. Santos; Ronaldo B. Dos Santos; Adilson Ben Da Costa. NanoMetrix: An app for chemometric analysis from near infrared spectra. Journal of Chemometrics 2020, 34, 1 .

AMA Style

Luiza Baumann, Marcia Librelotto, Cristiane Pappis, Gilson A. Helfer, Roberta O. Santos, Ronaldo B. Dos Santos, Adilson Ben Da Costa. NanoMetrix: An app for chemometric analysis from near infrared spectra. Journal of Chemometrics. 2020; 34 (12):1.

Chicago/Turabian Style

Luiza Baumann; Marcia Librelotto; Cristiane Pappis; Gilson A. Helfer; Roberta O. Santos; Ronaldo B. Dos Santos; Adilson Ben Da Costa. 2020. "NanoMetrix: An app for chemometric analysis from near infrared spectra." Journal of Chemometrics 34, no. 12: 1.

Special issue review
Published: 19 June 2020 in Journal of Chemometrics
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The steady advances in technology employed in smartphones, coupled with the high availability and the ease access to these devices, increased the interest in applying it to analytical purposes. The main goal is to develop simple, fast, and low‐cost analytical methods, generating immediate results. Different analytical strategies using smartphones have been proposed to identify or determine different analytes in a wide range of matrices. Some of them use the smartphone to capture the images, to process them, and to provide the analytical results. Others use this device just for image acquisition. In this context, this review aimed to relate previous works that used smartphones to acquire images for analytical purposes, with a special focus on PhotoMetrix application, which is a tool for chemical analysis. This application allows the decomposition of digital images acquired by smartphone cameras and to process them within the same device, allowing in situ chemical analysis.

ACS Style

Fernanda Carla Böck; Gilson Augusto Helfer; Adilson Ben Da Costa; Morgana Bazzan Dessuy; Marco Flôres Ferrão. PhotoMetrix and colorimetric image analysis using smartphones. Journal of Chemometrics 2020, 34, 1 .

AMA Style

Fernanda Carla Böck, Gilson Augusto Helfer, Adilson Ben Da Costa, Morgana Bazzan Dessuy, Marco Flôres Ferrão. PhotoMetrix and colorimetric image analysis using smartphones. Journal of Chemometrics. 2020; 34 (12):1.

Chicago/Turabian Style

Fernanda Carla Böck; Gilson Augusto Helfer; Adilson Ben Da Costa; Morgana Bazzan Dessuy; Marco Flôres Ferrão. 2020. "PhotoMetrix and colorimetric image analysis using smartphones." Journal of Chemometrics 34, no. 12: 1.

Research article
Published: 19 June 2020 in Journal of Culinary Science & Technology
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Cookies were prepared by substitution of pale yellow sweet potato flour by purple sweet potato flour (addition of 15.5%) and kale flour (addition of 13% and 24%) in relation to the control cookie (without the addition of purple sweet potato flour and kale flour). The aim of this study was increase calcium content and improve antioxidant activity of cookies and to evaluate physical and chemical properties. Cookies presented high ash contents, total dietary fiber, and antioxidant capacity. Use of kale flour produced cookies with high content in calcium; according to sensory analysis, the limiting amount of this mineral in the product was 360 mg 100 g−1. Through this study, it was possible to conclude that purple sweet potato and kale flours are potential functional food ingredients and a good alternative in the production of fortified cookies with the greater appeal of healthiness.

ACS Style

Carolinne Pereira Morais; Michele Utpott; Simone Hickmann Flores; Eduardo Cesar Tondo; Roberta Cruz Silveira Thys; Juliano Smanioto Barin; Adilson Ben Da Costa; Bruna Tischer. Nutritional, Antioxidant and Sensory Evaluation of Calcium-high Content Cookies Prepared with Purple Sweet Potato (Ipomoea Batatas L.) And Kale (Brassica Oleracea Var. Acephala) Flours. Journal of Culinary Science & Technology 2020, 1 -17.

AMA Style

Carolinne Pereira Morais, Michele Utpott, Simone Hickmann Flores, Eduardo Cesar Tondo, Roberta Cruz Silveira Thys, Juliano Smanioto Barin, Adilson Ben Da Costa, Bruna Tischer. Nutritional, Antioxidant and Sensory Evaluation of Calcium-high Content Cookies Prepared with Purple Sweet Potato (Ipomoea Batatas L.) And Kale (Brassica Oleracea Var. Acephala) Flours. Journal of Culinary Science & Technology. 2020; ():1-17.

Chicago/Turabian Style

Carolinne Pereira Morais; Michele Utpott; Simone Hickmann Flores; Eduardo Cesar Tondo; Roberta Cruz Silveira Thys; Juliano Smanioto Barin; Adilson Ben Da Costa; Bruna Tischer. 2020. "Nutritional, Antioxidant and Sensory Evaluation of Calcium-high Content Cookies Prepared with Purple Sweet Potato (Ipomoea Batatas L.) And Kale (Brassica Oleracea Var. Acephala) Flours." Journal of Culinary Science & Technology , no. : 1-17.

Research article
Published: 24 March 2020 in Analytical Chemistry
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A simple, rapid, low-cost method is proposed for the imaging of Pseudomonas aeruginosa biofilms on metallic surfaces using an infrared camera. Stainless steel coupons were cooled to generate a thermal gradient in relation to biofilm for active thermography (AT). Both cooling and image acquisition times were optimized and the images obtained with AT were compared with those from scanning electron microscopy. A free software (Thermofilm) was developed for image processing and the results were compared with the software ImageJ, with good agreement (from 87.7 to 103.8%). Images of coupons treated with sanitizer (peracetic acid) were obtained to show the applicability of the proposed method for biofilm studies. All analytical steps could be performed in 3 min in a non-contact, non-destructive, low-cost, portable, and easy-to-use way.

ACS Style

Mônica Voss; Keiti Oliveira Alessio; Roberto Christ Vianna Santos; Márcia Ebling de Souza; Dariane Jornada Clerici; Roger Wagner; Alexandre José Cichoski; Adilson Ben da Costa; Gilson Augusto Helfer; Guilherme Saldanha Machado; Jorge Barbosa; Edson Irineu Müller; Juliano Smanioto Barin. Rapid, Noninvasive, and Nondestructive Method for Biofilm Imaging on Metallic Surfaces Using Active Thermography. Analytical Chemistry 2020, 92, 5682 -5687.

AMA Style

Mônica Voss, Keiti Oliveira Alessio, Roberto Christ Vianna Santos, Márcia Ebling de Souza, Dariane Jornada Clerici, Roger Wagner, Alexandre José Cichoski, Adilson Ben da Costa, Gilson Augusto Helfer, Guilherme Saldanha Machado, Jorge Barbosa, Edson Irineu Müller, Juliano Smanioto Barin. Rapid, Noninvasive, and Nondestructive Method for Biofilm Imaging on Metallic Surfaces Using Active Thermography. Analytical Chemistry. 2020; 92 (8):5682-5687.

Chicago/Turabian Style

Mônica Voss; Keiti Oliveira Alessio; Roberto Christ Vianna Santos; Márcia Ebling de Souza; Dariane Jornada Clerici; Roger Wagner; Alexandre José Cichoski; Adilson Ben da Costa; Gilson Augusto Helfer; Guilherme Saldanha Machado; Jorge Barbosa; Edson Irineu Müller; Juliano Smanioto Barin. 2020. "Rapid, Noninvasive, and Nondestructive Method for Biofilm Imaging on Metallic Surfaces Using Active Thermography." Analytical Chemistry 92, no. 8: 5682-5687.

Journal article
Published: 03 September 2019 in Food Chemistry
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This work developed a new technique and an application of an existing approach to determine sodium in food sauces, involving enthalpimetric reactions in the infrared. Infrared Thermometric Titration (TT-IR) was utilized, with simple analyzers and low-cost measurement instruments for the acquisition of the surface temperature generated in the sodium precipitation reaction and development of software for the acquisition and processing of data using Raspberry Pi. The sodium was also quantified by Thermal Infrared Enthalpimetry (TIE), a recently developed technique. The rapid and simple quantification of sodium by the TT-IR and TIE showed the possibility of a selective reaction for sodium, using aluminum nitrate, potassium and ammonium fluoride in an acid medium, with reduction of the reagents and without the digestion step in the sample preparation. The results acquired through TT-IR and TIE corroborated the Flame Atomic Emission Spectrometry (FAES) with 96 to 103% and 95 to 102%, respectively.

ACS Style

Bruna Tischer; Iberê Damê Teixeira; Paula Freitas Filoda; Keiti Oliveira Alessio; Juliano Smanioto Barin; Fábio Andrei Duarte; Liane Mahlmann Kipper; Gilson Augusto Helfer; Adilson Ben Da Costa. Infrared enthalpymetric methods: A new, fast and simple alternative for sodium determination in food sauces. Food Chemistry 2019, 305, 125456 .

AMA Style

Bruna Tischer, Iberê Damê Teixeira, Paula Freitas Filoda, Keiti Oliveira Alessio, Juliano Smanioto Barin, Fábio Andrei Duarte, Liane Mahlmann Kipper, Gilson Augusto Helfer, Adilson Ben Da Costa. Infrared enthalpymetric methods: A new, fast and simple alternative for sodium determination in food sauces. Food Chemistry. 2019; 305 ():125456.

Chicago/Turabian Style

Bruna Tischer; Iberê Damê Teixeira; Paula Freitas Filoda; Keiti Oliveira Alessio; Juliano Smanioto Barin; Fábio Andrei Duarte; Liane Mahlmann Kipper; Gilson Augusto Helfer; Adilson Ben Da Costa. 2019. "Infrared enthalpymetric methods: A new, fast and simple alternative for sodium determination in food sauces." Food Chemistry 305, no. : 125456.

Article
Published: 07 August 2019 in Food Analytical Methods
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Thermometric titration is an enthalpimetric technique of analysis that uses the enthalpy variation of a reaction to determine the equivalence point of a titration for quantification of the analyte. One of the advantages of this technique is that it does not require sample preparation, such as digestion; it only needs to weigh the sample and add auxiliary reagents. Based on this technique, the aim of this work was to develop automated equipment for thermometric titration, using a contactless infrared temperature sensor. The equipment was manufactured using the concept of additive manufacturing. A Raspberry Pi microcomputer was used to interpret the signal from the temperature sensor and to control a micropump used to dispense titrant at a rate selected by the user. Components were designed using computer-aided design (CAD) software and printed on a fused deposition material printer. For evaluation of the equipment, tests were performed using neutralization and precipitation reactions, measuring the total acidity of vinegars and sodium in sauces. The temperature of reaction was plotted in an enthalpogram, from which the endpoint could be determined. Values of agreement between the method proposed and the reference method ranged from 100 to 104% for total acidity of vinegars and from 96 to 105% for the determination of sodium in sauce. The equipment proved to be technically feasible and of low cost, given that it used alternative and biodegradable materials such as polylactic acid.

ACS Style

Iberê Damé Teixeira; Bruna Tischer; Roberta Oliveira Santos; Keiti Oliveira Alessio; Gilson Augusto Helfer; Liane Mahlmann Kipper; Juliano Smanioto Barin; Adilson Ben da Costa. Development of an Automated Analytical System of Low Cost for High-Throughput Infrared Thermometric Titration. Food Analytical Methods 2019, 13, 260 -267.

AMA Style

Iberê Damé Teixeira, Bruna Tischer, Roberta Oliveira Santos, Keiti Oliveira Alessio, Gilson Augusto Helfer, Liane Mahlmann Kipper, Juliano Smanioto Barin, Adilson Ben da Costa. Development of an Automated Analytical System of Low Cost for High-Throughput Infrared Thermometric Titration. Food Analytical Methods. 2019; 13 (1):260-267.

Chicago/Turabian Style

Iberê Damé Teixeira; Bruna Tischer; Roberta Oliveira Santos; Keiti Oliveira Alessio; Gilson Augusto Helfer; Liane Mahlmann Kipper; Juliano Smanioto Barin; Adilson Ben da Costa. 2019. "Development of an Automated Analytical System of Low Cost for High-Throughput Infrared Thermometric Titration." Food Analytical Methods 13, no. 1: 260-267.

Journal article
Published: 27 June 2019 in Revista Jovens Pesquisadores
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Atualmente a identificação da maioria dos elementos encontrados no solo possuem métodos de análise atualizados e eficientes, porém a quantificação de matéria orgânica ainda é realizada através de métodos morosos e que resultam em grande quantidade de resíduos químicos. Desta maneira, surge a necessidade de tornar essa análise mais ágil e sustentável. Nos últimos tempos, o uso da espectroscopia molecular associada à quimiometria tem se destacado na avaliação qualitativa e quantitativa de diferentes tipos de materiais. Assim, o objetivo deste trabalho foi o desenvolvimento de um software, que a partir dos espectros infravermelhos das amostras de solo, seja capaz de analisar e gerar um modelo preditivo para amostras futuras, reduzindo o tempo de análise e a geração de resíduos. O software foi desenvolvido num ambiente de desenvolvimento integrado (IDE, Integrated Development Environment) cuja função é reunir características e ferramentas de apoio à construção de sistemas. Para isso, utilizou-se a IDE Microsoft Visual Studio 2015, versão Profissional, com alto nível de abstração de controles e classes, incluindo bibliotecas para gráficos. Além de eficiente, o Software mostrou-se capaz de analisar amostras de forma rápida e com pequena variação de resultados gerados por métodos atuais, permitindo o armazenamento das informações coletadas para criação de sistemas de predição.

ACS Style

Guilherme Saldanha Machado; Luiza Baumann; Cristiane Pappis; Marcia Librelotto; Gilson Augusto Helfer; Alcido Kirst; Jorge Luis Victoria; Roberta Oliveira Santos; Ronaldo Bastos Dos Santos; Gabrielle Fernanda Zimmer; Eduardo A. Lobo; Adilson Ben Da Costa. Sistema de gerenciamento de dados para análise de solos por espectroscopia molecular. Revista Jovens Pesquisadores 2019, 9, 16 -27.

AMA Style

Guilherme Saldanha Machado, Luiza Baumann, Cristiane Pappis, Marcia Librelotto, Gilson Augusto Helfer, Alcido Kirst, Jorge Luis Victoria, Roberta Oliveira Santos, Ronaldo Bastos Dos Santos, Gabrielle Fernanda Zimmer, Eduardo A. Lobo, Adilson Ben Da Costa. Sistema de gerenciamento de dados para análise de solos por espectroscopia molecular. Revista Jovens Pesquisadores. 2019; 9 (1):16-27.

Chicago/Turabian Style

Guilherme Saldanha Machado; Luiza Baumann; Cristiane Pappis; Marcia Librelotto; Gilson Augusto Helfer; Alcido Kirst; Jorge Luis Victoria; Roberta Oliveira Santos; Ronaldo Bastos Dos Santos; Gabrielle Fernanda Zimmer; Eduardo A. Lobo; Adilson Ben Da Costa. 2019. "Sistema de gerenciamento de dados para análise de solos por espectroscopia molecular." Revista Jovens Pesquisadores 9, no. 1: 16-27.

Journal article
Published: 25 May 2019 in Talanta
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Paper microzone plates and thermal infrared enthalpimetry (TIE) were combined with potato juice as natural reagent extract to perform the determination of hydrogen peroxide in pharmaceutical, bleaching, and toiletry products. A multichannel pipette was used for reagent addition simultaneously in multiple zones of paper devices, and the temperature rise was determined using an infrared camera. In order to provide suitable measurements, some parameters were optimized such as pH, volume of reagents, and stability of the extract. Results for the hydrogen peroxide were compared with those obtained using methods from official compendia (United States Pharmacopeia and ASTM D2180–17), with agreements ranging from 96 to 103%. The green analytical procedure index was used to compare the greenness of the proposed method with official ones, with clear advantages for TIE. Only microliters of samples and natural reagent extracts were required for analysis, and it was found that waste generation could be greatly reduced. After analysis, the paper device could be directly disposed since the final products of the reaction were O2 and water. According to these features, the proposed method could be considered a promising alternative to routine analysis in agreement with green analytical chemistry principles.

ACS Style

Keiti O. Alessio; Monica Voss; Erico M.M. Flores; Adilson Ben da Costa; Fabio Duarte; Juliano S. Barin. Infrared thermal imaging combined with paper microzone plates and natural reagent extracts for simple, fast, and green enthalpimetric analysis. Talanta 2019, 204, 266 -271.

AMA Style

Keiti O. Alessio, Monica Voss, Erico M.M. Flores, Adilson Ben da Costa, Fabio Duarte, Juliano S. Barin. Infrared thermal imaging combined with paper microzone plates and natural reagent extracts for simple, fast, and green enthalpimetric analysis. Talanta. 2019; 204 ():266-271.

Chicago/Turabian Style

Keiti O. Alessio; Monica Voss; Erico M.M. Flores; Adilson Ben da Costa; Fabio Duarte; Juliano S. Barin. 2019. "Infrared thermal imaging combined with paper microzone plates and natural reagent extracts for simple, fast, and green enthalpimetric analysis." Talanta 204, no. : 266-271.

Journal article
Published: 02 April 2019 in Águas Subterrâneas
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A ingestão frequente de água contendo concentração de flúor acima do limite estabelecido pela legislação brasileira causa uma doença chamada fluorose dentária. Atualmente, o monitoramento do nível de flúor na água para consumo humano é realizado utilizando métodos potenciométricos, cromatográficos ou colorimétricos, que são relativamente caros e utilizam equipamentos de difícil deslocamento para análises de campo. Portanto, surge a necessidade de desenvolver métodos alternativos, visando rapidez, praticidade, mobilidade e redução do custo das análises. O aplicativo para smartphone PhotoMetrix® é um software livre de análise de imagens digitais utilizando modelos matemáticos univariados e multivariados. A captura de imagens pode ser feita através do próprio smartphone ou com uma câmera USB externa. Assim, o objetivo deste estudo foi avaliar o uso do PhotoMetrix® no monitoramento da concentração de flúor em águas de abastecimento. Dois métodos de referência foram utilizados para comparação dos resultados: o método espectrofotométrico e o eletrodo de íon seletivos. Os resultados indicaram concordância entre os métodos, mostrando um coeficiente de determinação (R2) de 0,995 e erro de predição RMSEP (Root Mean Square Error of Prediction) de aproximadamente 0,05 mg L-1. Então, o PhotoMetrix® é um método satisfatório para a determinação de flúor, podendo se tornar uma alternativa viável para o monitoramento da qualidade da água, especialmente para sistemas alternativos de abastecimento.

ACS Style

Luiza Baumann; Marcia Librelotto; Cristiane Pappis; Ronaldo Bastos Dos Santos; Roberta Oliveira Santos; Gilson Augusto Helfer; Eduardo Alexis Lobo; Adilson Ben Da Costa. Uso do aplicativo PhotoMetrix no monitoramento da concentração de flúor em sistemas alternativos de abastecimento de água. Águas Subterrâneas 2019, 33, 1 .

AMA Style

Luiza Baumann, Marcia Librelotto, Cristiane Pappis, Ronaldo Bastos Dos Santos, Roberta Oliveira Santos, Gilson Augusto Helfer, Eduardo Alexis Lobo, Adilson Ben Da Costa. Uso do aplicativo PhotoMetrix no monitoramento da concentração de flúor em sistemas alternativos de abastecimento de água. Águas Subterrâneas. 2019; 33 (2):1.

Chicago/Turabian Style

Luiza Baumann; Marcia Librelotto; Cristiane Pappis; Ronaldo Bastos Dos Santos; Roberta Oliveira Santos; Gilson Augusto Helfer; Eduardo Alexis Lobo; Adilson Ben Da Costa. 2019. "Uso do aplicativo PhotoMetrix no monitoramento da concentração de flúor em sistemas alternativos de abastecimento de água." Águas Subterrâneas 33, no. 2: 1.

Journal article
Published: 09 March 2019 in Talanta
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In this work, a simple and inexpensive flow thermal infrared enthalpimetry (TIE-F) method was developed through a combination of flow injection analysis and thermal infrared enthalpimetry (TIE) to determine the alcohol content of distilled beverages (cachaça, cognac, and vodka). The principle used in this method consisted of monitoring the enthalpy of dissolution of ethanol through a low-cost infrared sensor coupled to a flow system. The results showed an agreement between the proposed method and the conventional method, ranging from 96.5% to 99.0%. The obtained limit of quantification (LOQ, 10σ) of 25.10% (v/v) was enough for distilled beverages, which should present a minimum alcoholic content of 36% according to Brazilian legislation. In addition, the TIE-F instrumentation presented costs that were 100 times lower than the instrumentation that was used in the batch TIE, and the time of analysis was significantly reduced. The amount of residue generated was also reduced, thereby providing significant energy savings and easy adaptation to processes on industrial scales.

ACS Style

Ronaldo Bastos dos Santos; Paula Freitas Filoda; Iberê Damé Teixeira; Gilson Augusto Helfer; Roberta Oliveira Santos; Alessandra Stangherlin Oliveira; Juliano Smanioto Barin; Bruna Tischer; Adilson Ben Da Costa. Flow thermal infrared enthalpimetry: Rapid and inexpensive determination of the alcohol content of distilled beverages. Talanta 2019, 200, 67 -71.

AMA Style

Ronaldo Bastos dos Santos, Paula Freitas Filoda, Iberê Damé Teixeira, Gilson Augusto Helfer, Roberta Oliveira Santos, Alessandra Stangherlin Oliveira, Juliano Smanioto Barin, Bruna Tischer, Adilson Ben Da Costa. Flow thermal infrared enthalpimetry: Rapid and inexpensive determination of the alcohol content of distilled beverages. Talanta. 2019; 200 ():67-71.

Chicago/Turabian Style

Ronaldo Bastos dos Santos; Paula Freitas Filoda; Iberê Damé Teixeira; Gilson Augusto Helfer; Roberta Oliveira Santos; Alessandra Stangherlin Oliveira; Juliano Smanioto Barin; Bruna Tischer; Adilson Ben Da Costa. 2019. "Flow thermal infrared enthalpimetry: Rapid and inexpensive determination of the alcohol content of distilled beverages." Talanta 200, no. : 67-71.

Journal article
Published: 21 February 2019 in Ambiente e Agua - An Interdisciplinary Journal of Applied Science
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This research evaluated the effectiveness of the implementation of water resource preservation areas in the Hydrographical Basin of Andreas Stream, county of Vera Cruz, RS, Brazil, established through Payment for Environmental Services (PES), using an environmental monitoring program to assess physical, chemical and microbiological variables. The PES is linked to the "Water Guardian" project, which aims to ensure the preservation of water resources by paying farmers for providing the environmental services to protect the springs and riparian areas that lie within their properties. Twenty sampling stations were selected for collecting water samples monthly during the period July 2012 to June 2014 (460 samples) to evaluate the following variables: water temperature, pH, turbidity, dissolved oxygen, biochemical oxygen demand, nitrate, ammonia nitrogen, phosphate, total dissolved solids and thermotolerant coliforms. The evaluation was made based on decree 357/2005 of the National Environmental Council (CONAMA) and by applying the Water Quality Index (WQI). The results indicated a significant improvement in the water quality when comparisons were made between the periods before and after the installation of the preservation areas. The sampling points classified as “good” (CONAMA and WQI), which indicates water of good quality that is appropriate for multiple uses, increased from 52.0% to 72.0%. In this sense, promoting the preservation of headwaters and riparian zones becomes of fundamental importance and highlights the role of PES as an operational tool for water resource preservation.

ACS Style

Rodrigo Augusto Klamt; Eduardo Alexis Lobo; Adilson Ben Da Costa; Dionei Minuzzi Delevati. Evaluation of water resource preservation areas in the Hydrographical Basin of Andreas Stream, RS, Brazil, using environmental monitoring programs. Ambiente e Agua - An Interdisciplinary Journal of Applied Science 2019, 14, 1 -12.

AMA Style

Rodrigo Augusto Klamt, Eduardo Alexis Lobo, Adilson Ben Da Costa, Dionei Minuzzi Delevati. Evaluation of water resource preservation areas in the Hydrographical Basin of Andreas Stream, RS, Brazil, using environmental monitoring programs. Ambiente e Agua - An Interdisciplinary Journal of Applied Science. 2019; 14 (2):1-12.

Chicago/Turabian Style

Rodrigo Augusto Klamt; Eduardo Alexis Lobo; Adilson Ben Da Costa; Dionei Minuzzi Delevati. 2019. "Evaluation of water resource preservation areas in the Hydrographical Basin of Andreas Stream, RS, Brazil, using environmental monitoring programs." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 14, no. 2: 1-12.