Edenir Rodrigues Pereira‐Filho
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View article: Mitigating UV-C Degradation in Polypropylene Using Hybrid TiO <sub>2</sub> /Few-Layer Graphene/Photostabilizer Systems
Mitigating UV-C Degradation in Polypropylene Using Hybrid TiO <sub>2</sub> /Few-Layer Graphene/Photostabilizer Systems Open
Polypropylene (PP) is a versatile thermoplastic widely used in industrial fields. In medical devices, PP is preferred for applications that involve storing or coming into contact with biological fluids. However, when exposed to UV-C, commo…
View article: Unlocking Copper from Electronic Waste: Optimized Leaching Strategies and Rapid Analytical Chemistry Evaluation
Unlocking Copper from Electronic Waste: Optimized Leaching Strategies and Rapid Analytical Chemistry Evaluation Open
This study presents a novel method for evaluating copper (Cu) extraction efficiency by combining chemometric approaches with non-invasive analytical techniques, including energy-dispersive x-ray fluorescence (ED-XRF) and laser-induced brea…
View article: LIBS and Hyperspectral Imaging as a Real-Time Process Control Tool for Metal Recovery from E-Waste
LIBS and Hyperspectral Imaging as a Real-Time Process Control Tool for Metal Recovery from E-Waste Open
The rapid increase in e-waste creates challenges, requiring more efficient recycling methods. This study explores the application of laser-induced breakdown spectroscopy (LIBS) combined with hyperspectral imaging to monitor leaching proces…
View article: Spectroscopy Technologies to Screen Peanut Seeds with Superior Vigor Through “Chemical Fingerprinting”
Spectroscopy Technologies to Screen Peanut Seeds with Superior Vigor Through “Chemical Fingerprinting” Open
Peanut seeds are harvested at different development stages (early and late) due to their uneven maturation. At the time of harvest, approximately 30% of the seeds are still immature, meaning they are not completely filled with compounds (e…
View article: Interaction between Industry and Academia: Is the Chemical Professional Master a Possibility?
Interaction between Industry and Academia: Is the Chemical Professional Master a Possibility? Open
Between 2017 and 2020, the Brazilian chemical graduate education system comprised a total of 74 graduate programs spread over several states. However, a mere five of these (just 6.7%) were exclusively dedicated to professionals already eng…
View article: Study of an Environmentally Sequential Sustainable Process to Recover Ag, AU, Cu, and Sn from E-Waste
Study of an Environmentally Sequential Sustainable Process to Recover Ag, AU, Cu, and Sn from E-Waste Open
View article: Laser Induced-Breakdown Spectroscopy (Libs) Combined with Machine Learning Algorithms: An Accurate Tool to Identify Primed Seeds
Laser Induced-Breakdown Spectroscopy (Libs) Combined with Machine Learning Algorithms: An Accurate Tool to Identify Primed Seeds Open
View article: Indium Recovery from End-of-Life E-Waste: Important Details Related to Spectroanalytical Determination and Recycling Viability
Indium Recovery from End-of-Life E-Waste: Important Details Related to Spectroanalytical Determination and Recycling Viability Open
Recycling has experienced great interest over the past five years, primarily driven by its strategic economic significance and the growing scarcity of natural resources. One element that has garnered attention is indium (In), especially du…
View article: Design of Experiments (DoE) Application in Two Cases of Study in Pharmaceutical Industries
Design of Experiments (DoE) Application in Two Cases of Study in Pharmaceutical Industries Open
This study illustrates the practical application of Design of Experiments (DoE) in two real-life scenarios within the pharmaceutical industry. The first case involved optimizing a chromatographic method for the determination of multiple an…
View article: Prediction of viscosity, density and solids content in inks employed in printing industry production chain combining infrared and neural models
Prediction of viscosity, density and solids content in inks employed in printing industry production chain combining infrared and neural models Open
In this work, some characteristics of the black and whiteinks that are part of the graphic printing processes,calledrotogravure, were evaluated. In this process, the ink playsa decisive role in the quality of the material produced,therefor…
View article: Design of Experiments as a tool for post-consumer PLA packaging recycling: correlation between washing parameters and degradation
Design of Experiments as a tool for post-consumer PLA packaging recycling: correlation between washing parameters and degradation Open
The increasing demand for sustainable packaging solutions has led to the widespread adoption of biodegradable polymers such as polylactic acid (PLA) in the packaging industry. However, the efficient recycling of post-consumer PLA packaging…
View article: Indium Recovery from End-of-Life E-Waste: Chemical Determination and Recycling Viability
Indium Recovery from End-of-Life E-Waste: Chemical Determination and Recycling Viability Open
View article: Non-Invasive Analysis and Chemometrics Strategies for Macronutrients Determination in Non-Conventional Food Plants (Panc)
Non-Invasive Analysis and Chemometrics Strategies for Macronutrients Determination in Non-Conventional Food Plants (Panc) Open
View article: PRINCIPAL COMPONENT ANALYSIS (PCA) PARA A AVALIAÇÃO DE DADOS QUÍMICOS E GERAÇÃO DE HEAT MAPS: UM TUTORIAL
PRINCIPAL COMPONENT ANALYSIS (PCA) PARA A AVALIAÇÃO DE DADOS QUÍMICOS E GERAÇÃO DE HEAT MAPS: UM TUTORIAL Open
PRINCIPAL COMPONENT ANALYSIS (PCA) FOR CHEMICAL DATA EVALUATION AND HEAT MAPS PREPARATION: A TUTORIAL. This tutorial shows a step-by-step guide on handling big datasets using principal component analysis (PCA). A dataset of chemical elemen…
View article: Professor Edenir Pereira Filho, a researcher with a broad and solid background in science and also a YouTuber, recently gave an interview to BrJAC
Professor Edenir Pereira Filho, a researcher with a broad and solid background in science and also a YouTuber, recently gave an interview to BrJAC Open
Edenir R. Pereira Filho holds a degree in Chemistry from the Pontifical Catholic University of Campinas (1996), a Master's degree in Chemistry (1999) from the State University of Campinas (Unicamp), a Master's degree in Mathematics (2022) …
View article: Chromatography Conditions Development by Design of Experiments for the Chemotype Differentiation of Four Bauhinia Species
Chromatography Conditions Development by Design of Experiments for the Chemotype Differentiation of Four Bauhinia Species Open
The extensive use of medicinal herbs to traditionally treat disease persists for generations, and scientific evidence on plant-derived extracts has indicated their numerous biological activities. The Bauhinia , popular known as cow’s paw (…
View article: Multiway Calibration Strategies in Laser-Induced Breakdown Spectroscopy: A Proposal
Multiway Calibration Strategies in Laser-Induced Breakdown Spectroscopy: A Proposal Open
In this study, a new approach to laser-induced breakdown spectroscopy (LIBS) data modeling using multiway algorithms was investigated. Two case studies, parallel factor analysis (PARAFAC) and unfolded-partial least-squares with residual bi…
View article: White Crystal Cane Sugar Analysis Using a Noninvasive Method for Detection of Tampering with Sand
White Crystal Cane Sugar Analysis Using a Noninvasive Method for Detection of Tampering with Sand Open
View article: Evaluation of the Seasonality and Extraction Method on the Polar Extracts of Croton grewioides Baill. by Chromatogram Fingerprinting and Isolation of a New Triglycosylated Flavonoid
Evaluation of the Seasonality and Extraction Method on the Polar Extracts of Croton grewioides Baill. by Chromatogram Fingerprinting and Isolation of a New Triglycosylated Flavonoid Open
Croton grewioides Baill. popularly known as “canelinha” or “canelinha-de-cheiro” has been used for the treatment of influenza, antitussive, febrifuge and headache; however, the study of its phytochemical composition is limited. The aim of …
View article: PLANEJAMENTO DE MISTURAS E VISUALIZAÇÃO DA REGIÃO ÓTIMA COM PLANILHAS NO EXCEL: UM TUTORIAL
PLANEJAMENTO DE MISTURAS E VISUALIZAÇÃO DA REGIÃO ÓTIMA COM PLANILHAS NO EXCEL: UM TUTORIAL Open
MIXTURE DESIGN AND OPTIMUM REGION VISUALIZATION WITH SPREADSHEETS AT EXCEL: A TUTORIAL. This tutorial shows how to perform the data treatment for mixture design with two and multiple responses. Two data sets from the literature were used t…
View article: Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES
Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES Open
This study presents a microwave-assisted procedure for sample preparation of cocoa beans using diluted HNO3 with H2O2 for the determination of Ba, Ca, Cu, K, Mg, Mn, P, S, Sr and Zn by inductively coupled plasma optical emission spectromet…
View article: Calibration Strategies Applied to Laser-Induced Breakdown Spectroscopy: A Critical Review of Advances and Challenges
Calibration Strategies Applied to Laser-Induced Breakdown Spectroscopy: A Critical Review of Advances and Challenges Open
Over the years, laser-induced breakdown spectroscopy (LIBS) has been reported in the literature as an alternative to traditional methods of analysis, becoming well established among spectroanalytical techniques. LIBS is a technique widely …
View article: Chemical exploratory analysis of printed circuit board (PCB) using inductively coupled plasma optical emission spectrometry (ICP OES): data treatment and elements correlation
Chemical exploratory analysis of printed circuit board (PCB) using inductively coupled plasma optical emission spectrometry (ICP OES): data treatment and elements correlation Open
Electronic waste is the fastest growing class of residue in the world. This material presents several electric and electronic equipment (EEE) with a huge amount of base, valuable and toxic elements, thus increasing its recycling interest. …
View article: Alternative Approaches Applied to Inductively Coupled Plasma Techniques: Multi‑Flow and Two-Flow Calibration
Alternative Approaches Applied to Inductively Coupled Plasma Techniques: Multi‑Flow and Two-Flow Calibration Open
Multi-flow calibration (MFC) is based on monitoring the analytical signal from a single calibration standard solution at several different nebulization gas flow rates (Q), which normalizes plasma conditions and minimizes matrix effects. In…
View article: Minimal-Invasive Analytical Method and Data Fusion: an Alternative for Determination of Cu, K, Sr, and Zn in Cocoa Beans
Minimal-Invasive Analytical Method and Data Fusion: an Alternative for Determination of Cu, K, Sr, and Zn in Cocoa Beans Open
View article: Key information related to quality by design (QbD) applications in analytical methods development
Key information related to quality by design (QbD) applications in analytical methods development Open
In this review, quality by design (QbD) initiatives are described as applications for many types of processes, such as in the pharmaceutical industry, biotechnology field, and for analytical methods development. Design space (DS) and desig…
View article: Evaluation of the Seasonality and Extraction Method on the Polar Extracts of Croton grewioides Baill. by Chromatogram Fingerprinting and Isolation of a New Triglycosylated Flavonoid
Evaluation of the Seasonality and Extraction Method on the Polar Extracts of Croton grewioides Baill. by Chromatogram Fingerprinting and Isolation of a New Triglycosylated Flavonoid Open
Croton grewioides Baill.popularly known as "canelinha" or "canelinha-de-cheiro" has been used for the treatment of influenza, antitussive, febrifuge and headache; however, the study of its phytochemical composition is limited.The aim of th…
View article: Calibration Strategies Applied to Laser-Induced Breakdown Spectroscopy: A Critical Review of Advances and Challenges
Calibration Strategies Applied to Laser-Induced Breakdown Spectroscopy: A Critical Review of Advances and Challenges Open
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View article: Análise do material particulado (PM10) na área central da cidade de São Carlos-SP por meio das técnicas espectroanalíticas
Análise do material particulado (PM10) na área central da cidade de São Carlos-SP por meio das técnicas espectroanalíticas Open
View article: Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES
Multivariate Analysis: Use of Doehlert Design (DD) for Optimization of a Simple Sample Preparation Procedure for the Determination of Inorganic Constituents in Cocoa Beans Employing Microwave Acid Digestion and ICP OES Open
This study presents a microwave-assisted procedure for sample preparation of cocoa beans using diluted HNO 3 with H 2 O 2 for the determination of Ba, Ca, Cu, K, Mg, Mn, P, S, Sr and Zn by inductively coupled plasma optical emission spectr…