Recent Papers - Machine Learning Special Issue
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In this work, a sensitive and straightforward magnetic dispersive solid-phase microextraction for the simultaneous determination of pesticides (acetamiprid, atrazine, diuron, imidacloprid, thiacloprid and thiamethoxam) in river water samples using magnetic nanocomposites of GO/γ-Fe2O3 and subsequent determination by high-performance liquid chromatography-diode array detection is presented. Details are presented in the Article Synthesis of GO/γ-Fe2O3 for Application in Solid-Phase Dispersive Magnetic Microextraction for Determination of Pesticides at Ultra-Trace Levels in River Water Samples by HPLC-DAD by Luciana R. Marcelo, Deborah V. Cesar and Jefferson S. de Gois on page e-20240122.
Luciana R. Marcelo; Deborah V. Cesar; Jefferson S. de Gois
How to cite this articleIn this work, a sensitive and straightforward magnetic dispersive solid-phase microextraction for the simultaneous determination of pesticides (acetamiprid, atrazine, diuron, imidacloprid, thiacloprid and thiamethoxam) in river water samples using magnetic nanocomposites of GO/γ-Fe2O3 and subsequent determination by high-performance liquid chromatography-diode array detection is presented. Details are presented in the Article Synthesis of GO/γ-Fe2O3 for Application in Solid-Phase Dispersive Magnetic Microextraction for Determination of Pesticides at Ultra-Trace Levels in River Water Samples by HPLC-DAD by Luciana R. Marcelo, Deborah V. Cesar and Jefferson S. de Gois on page e-20240122.
Iolanda S. do Carmo; Paulo S. Lima Júnior; Sidney G. de Lima ; Jardes F. do Rêgo; Valéria C. de Sousa; Laiz P. Santos;
Rita de Cássia V. de Carvalho; Lucas M. M. Marques; Norberto P. Lopes ; Fernando Aécio A. Carvalho; José S. Lima Neto ;
Antônia Maria G. L. Citó
Extraction and identification of compounds from extract polar fractions of Lantana caatingensis by liquid chromatography hyphenated with mass spectrometry and antileishmanial properties.
Ana Claudia S. da Rosa; Arielli Juliane N. Costa; Oscar O. Santos Júnior ; Camila da Silva
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Extraction of active compounds from jambolan leaf to sunflower seed oil.
Pedro A. L. Santana; Marina S. M. Ruas; Gabriel C. Veríssimo; Ana C. G. Terra; Renata B. de Oliveira; Vinícius G. Maltarollo
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Ligand-Based Drug Design (LBDD) and Structure-Based Drug Design (SBDD) techniques merged to evaluate important groups to the fatty acid amide hydrolase (FAAH) inhibitors design.
Luciane Effting ; Letícia M. Effting ; César R. T. Tarley
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A green supramolecular microextraction was developed for the analysis of insecticides, fungicides, and herbicides in water and cereal samples and using Analytical GREEnness to assess the environmental friendliness.
Luciana R. Marcelo; Deborah V. Cesar; Jefferson S. de Gois
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Extraction and pre-concentration of pesticides in river water using graphene oxide (GO)/γ-Fe2O3 as a magnetic sorbent and determination by high-performance liquid chromatography-diode array detection.
Kamilla B. Silveira; Gabriel E. P. Almeida; Debora H. A. Brito; Francisco‑Alessandro M. Rodrigues; Elano N. Ferreira;
Adriano L. A. Mattos; Denise R. Moreira; Alexandre C. C. Sousa; Douglas Britto; Nágila M. P. S. Ricardo
A novel production of polyurethane materials (PU1 and PU2) from Moringa oleifera oil, emphasizing variations in thermal stability, molecular structure, and mechanical resistance based on the cultivation conditions.
Pengmian Huang ; Ting Yang ; Jiyong Liu; Juncheng Xiang; Minghui Wu
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Design, synthesis and biological activities of novel meta-diamide compounds containing 1,2,4-oxadiazole group.
Vilisaimon S. de Jesus; Juliana L. Leite; Jailan S. Sousa ; Fabricio S. Barbosa; Djalma M. de Oliveira; Rubens S. Barreto ; Wagner R. A. Soares ; Bruno S. Andrade ; Simone A. Gualberto; Débora C. da Silva; Isabelly D. S. Guimarães; Luiza F. Silva; Rosane M. Aguiar
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The essential oil (EO) extracted from Anemia tomentosa (EOAT) was analyzed through chromatography techniques to identify and quantify its main chemical constituents. Then, methodologies in vitro and in silico were applied to investigate its larvicidal activity.
Renata R. S. Robaina ; Michel S. Passos; Raimundo Braz-Filho ; Ivo J. C. Vieira
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The phytochemical investigation of the species Trichilia pseudostipularis resulted in the isolation of four compounds, two of which are new.
Rafael T. de Castro; Fabio H. Florenzano
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Ni2+ removal from aqueous solutions by poly(acrylic acid) (PAA) and poly(acrylic acid-b-acrylamide (PAA-b-PAm) water-soluble polymeric materials entrapped by a semi-permeable membrane. Ions cross the membrane and get immobilized on the functional groups of the polymers.
Maria Isabela S. Figueiredo ; Ivani S. Mello ; Sabrina K. Targanski; Juliana S. Duarte; Leonardo G. Vasconcelos;
André Luiz A. Stein ; Marcos Antonio Soares
Selenoacetylenes have diverse biological activities including neuroprotective and life-extending actions in Caenorhabditis elegans.
Marcelino S. do Rosário; Helena Mannochio-Russo; Ana L. P. dos Santos; Aglaete A. Pinheiro; Luna N. Vasconcelos; Ana Paula S. A. Santos; Lila T. de Oliveira ; Monique M. Martins; Marcelo S. de Andrade; Maria D. S. B. Nascimento; Vanderlan S. Bolzani ; Josélia A. Lima; Cláudia Q. da Rocha
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Molecular networking for compound annotation of Fridericia platyphylla and anticancer properties of extract and isolated compounds.
Cheng Y. Liu ; Chao Y. Jie; Dao Cao; Yu Liu; Feng Cui Li; Shu N. Gao
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A simple method for preparing SERS (surface-enhanced Raman scattering) silver films is proposed by electrodeposition in urea-acetamide-LiBr mixtures. These new active substrates have high enhancement factors, of approximately 107, and enable Raman scattering even for diluted solutions (10-11 mol L-1).
Gleice R. da Silva; Francisnaira S. Santos ; Fernando F. Leite; Chonny A. H. Acevedo ; Natália F. de Sousa; Gabriela B. Grimaldi; Milena B. P. Soares; Elisalva T. Guimarães; Marcus T. Scotti ; Luis Cezar Rodrigues; Francisco J. B. Mendonça Júnior; Eloísa H. Campana; José M. Barbosa Filho ; Hemerson I. F. Guimarães ; Felipe Q. S. Guerra
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This study addresses the use of in silico tools to predict the pharmacological activity of novel chalcones and possible mechanisms of action in Leishmania braziliensis using molecular docking. The molecules proved to be promising.
Jenifer R. Almeida ; Mayra N. Moura ; Luma B. Magnago ; Ana K. S. Rocha ; Edson L. D. Coelho ; Sandra A. D. Ferreira ; Maria de Fátima F. Lelis ; Marcos B. J. G. de Freitas
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Transforming waste into advanced technology: recycling cobalt ferrite from notebook batteries and iron ore tailing waste for application in photocatalysis under solar radiation and use as an electrochemical ascorbic acid sensor.
José Fernando de Macedo ; Jonatas O. S. Silva ; José Felipe dos Santos ; José Carlos dos Santos Júnior ; Micael S. Matos ; Eliana M. Sussuchi
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The graphical abstract represents the analytes being directed to the electrode surface with the mediation of 2-hydroxyethylammonium acetate (2HEAA). It also shows the electrooxidation reactions of nicotine and caffeine with the donation of protons from 2HEAA acting to facilitate the process.
Michel R. R. Souza; Daniela Droppa-Almeida; Helena A. C. Kodel; Tatiane B. Santos; Ashlley S. Moraes; Laiza C. Krause;
Thiago R. Bjerk
Nine compounds of the essential oil from Commiphora leptophloeos leaves were analyzed via an in silico (docking molecular and pharmacokinetic analysis) study against coronavirus disease (COVID-19) (or severe acute respiratory syndrome coronavirus 2, SARS-CoV-2). Thus, COVID-19 M and spike protein showed interaction with β-selinene and bicyclogermacrene. These compounds showed low gastrointestinal absorption and high epithelial absorption.
Fabrício O. Ramos ; Patrícia M. Guarda; Rosinete N. Sousa; Danylo B. Mendes; Fabiana F. Silva; Emerson A. Guarda
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Obtaining natural antioxidant from cashew nut peel (Anacardium occidentale) to reduce oxidation in biodiesel.
Jiewen Yang; Song Wang; Xiaowen Lin; Changhua Xu
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Multi-molecular infrared spectroscopic combined with multivariate data fusion for quantitative detection of trace hormones.
Fabíola Z. Schuviecersk; Maria Luiza R. Silva; Ala Baghdadi; Jonathan Luiz Wöhlke; Fernando A. Freitas; Aline T. Toci
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Of the anabolic steroids smuggled in the triple border and seized by the Federal Police, only 22.5% had concentrations equivalent to those labeled.
Leonardo F. de Souza; Felipe L. P. Pereira; Alisson L. D. Silva; Mary Ane G. Lana; Cristiana R. de Paiva; Matheus M. M. F. Gloria; Wagner L. Fernandes; Raquel Nogueira
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A multiresidue analytical method for quantification of nitroimidazoles, anthelmintics, amphenicols, and dyes in meat, shrimp, and fish was developed using a modified quick, easy, cheap, effective, rugged and safe (QuEChERS)-type extraction and isotope dilution ultra-high performance liquid chromatography coupled with tandem mass spectrometry (UHPLC-MS/MS).
Julio C. Thurler-Júnior ; Caroline S. Moreira; Raquel C. Castiglione; Rafael L. Simões; Daniela G. G. Rando; Felipe F. T. R. Martins; Ramon M. Cogo; Ruan C. B. Ribeiro; Vitor F. Ferreira ; Vinicius D. B. Pascoal; Aislan C. R. F. Pascoal; David R. da Rocha
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In this work, we describe a novel bis-thionaphthoquinone that inhibited cervical cancer cells proliferation and induced deoxyribonucleic acid (DNA) fragmentation. In silico studies suggests that carbonic anhydrase II is a potential target of this compound.
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