Fernanda K. Alves de Souza; Maria Laura F. Della Costa
; Marco A. Morales; Aroldo G. Magdalena
Controlled release system of curcumin encapsulated by chitosan and carried by green iron oxide (Fe3O4) nanoparticles to enhance curcumin bioavailability.
Daniel B. Souza; Adriana S. de Oliveira
; Wagner Felippe Pacheco
; Marcos A. S. Costa
Gas chromatography coupled with mass spectrometry can be used to identify the coumarin brodifacoum in poisoned foods.
Camila Ferreira Pinto; Eduarda Maia Guimarães; Marquele Amorim Tonhela; Sandra Cristina Dantas; Ana Claudia Granato Malpass; Geoffroy Roger Pointer Malpass
Hydrochloric acid (HCl) and hexafluorosilicic acid (H2SiF6) are used to extract copper as CuII from printed circuit boards, producing H2 as a byproduct.
Diogo La Rosa Novo*; Lucas Ceron Kikhofel; Milene Marques Freitas; Wanderson da Silva Roriz; Claudio Martin Pereira de Pereira; Daniela Bianchini
; Carla de Andrade Hartwig
The study reports moisture determination in an engine lubricating oil using six different analytical strategies. It highlights the importance of controlling moisture in commercial lubricating oils to certify their quality and describes a forensic case study.
José F. P. DinizI,*; Sayna K. P. VianaII; Lanna K. SilvaI; Gilmar S. da SilvaI; Samara A. EschriqueIII
; Adriana B. AraújoI
Pharmaceutical contaminants in water pose significant environmental risks. This study optimizes photocatalytic treatment using Ag/TiO2 catalysts to degrade naproxen, diclofenac, and mefenamic acid. Effective degradation in brackish water achieved 90% degradation of naproxen within 10 h.
Joselaine C. Santana*; Cláudio Dariva
Corn processing generates a large amount of straw and cob. These lignocellulosic residues can be subjected to an organosolv pretreatment process with glycerol, aiming to obtain reducing sugars necessary for the production of cellulosic ethanol.
Lucas C. OliveiraI,*; Igor M. CastroII
; Taynah P. GaldinoI
; Albaniza A. TavaresI
; Suédina Maria L. SilvaI
;
Marcus Vinícius L. FookI; Rossemberg C. BarbosaI
Biodegradable suture threads were synthesized from chitosan and powdered eggshell membrane, followed by preparation, suture thread formation, crosslinking with riboflavin, and chemical, morphological, and mechanical characterization.
Allan MorcelliI,*; Gabriel Luiz VencatoII; Rosane RechIII; Nilson Romeu MarcílioIII
The figure depicts a factory with the words “tannery/electroplating industry” above it is shown with an arrow coming out of it, representing copper, chromium, iron and zinc ions going into a shake flask with green liquid where microalgae are illustrated being cultivated.
Igor R. NevesI,*; André J. R. SimõesII; Leandro R. TeixeiraII; Juliane G. C. GomesII; Soraia T. BrandãoI; Iuri M. PepeII
The image shows schemes of an analog bubble-flowmeter and present warnings about its challenges (long analysis time, ergonomic risk) and shows its replacement with a digital bubble-flowmeter thereby eliminating the challenges.
Vania Martins Ramos; Bruno Campana Severino; Ana Paula de Lima Batista*
Different density functional theory (DFT) / time-dependent DFT (TD-DFT) protocols for ultraviolet-visible (UV-Vis) spectra were assessed, optimizing functionals, basis sets, and solvation models for reliable geometric and spectral analysis of organic and inorganic compounds.
Fernando C. OliveiraI; Almir Silva NetoI; Lucas Brites FaresII
; Tiago Almeida SilvaII; Renata Maria Seara MartinsI,*
The kinetic study of 1020 carbon steel corrosion revealed zero-order kinetics for the HCl system and first-order kinetics for the HNO3 system.
Andrés Mauricio AmayaI; María Carolina OtáloraII; Coralia OsorioI,*
The angiotensin converting enzyme-I (ACE-I) inhibition of Vaccinium meridionale Swartz fractions and microencapsulates was evaluated, finding that anthocyanins are responsible for this activity.
Eduardo da Silva Macedo; Caroline Gonçalves; Fabiana Luvizon Germer; Eduardo Sidinei Chaves*
Deep eutectic solvent for extraction of copper from tea samples.
Camilo Eduardo García Henao; Guillermo Salamanca Grosso
; Anderson Guarnizo Franco*
Magnetite nanoparticles-supported tannic acid capturing CdII and PbII from water.
Arthur T. F. A. AraújoI; Nádia G. SousaII; Cássia R. CardosoIII; Daniel A. CerqueiraIV,*
The work presents a comparison of methodologies for the kinetic modelling of heterogeneous biomass pyrolysis, and shows a precise representation, with low deviations between theoretical and experimental curves.
Shaoliang ShiI,#; Shan TuII,III,#,*; Wentao ZhangII,*; Song YangII; Hao DuII; Yuanpeng LiIII; Junhui HuIII; Huapeng XiaoIII
This graphical summary illustrates the molecular structures of the three chiral molecules: ortho-hydroxybenzoic acid (O-HA), meta-hydroxybenzoic acid (M-HA), and para-hydroxybenzoic acid (P-HA). The left side shows the Raman spectral signals, while the middle compares experimental and theoretical Raman spectra, highlighting the recognition process. Finally, the right side presents their vibrational modes.
Rosanny C. da SilvaI,*; Cleylton B. LopesII; Fred A. R. NogueiraI; Leonardo V. da SilvaI; Alessandra F. da SilvaI; Amanda V. S. OliveiraI; Elisangela O. da SilvaI; Italo G. dos S. SilvaI; Jose C. dos S. SilvaI; Julia E. de C. SilvaI; Julie A. dos S. QuintelaI; Larissy A. da S. RibeiroII; Maria C. P. D da C. GomesII; Marilian G. dos S. BernardoI; Walleska J. de A. MarquesI
Calcium carbonate derived from eggshells was added to arrowroot film, resulting in a polymer composite capable of preserving food.
Elienae da Silva Gomes; Eloize Silva Alves; Patricia Daniele Silva Santos; Marcela de Souza Zangirolami; Oscar Oliveira Santos
Optimization of the extraction of the 2'-fucosyllactose from human milk, finding experimental conditions including optimizing solvent (water) and centrifugation time for safe and rapid extraction.
Maribel Arrizón FregozoI; Nestor García RamírezI; Jorge Alberto Cortes OrtegaII; Juan Carlos Sánchez DíazI,*
Scheme of the process of copper ion absorption, transformation into copper hydroxide entrapped in the hydrogel and the absorption of furfural, one of the organic compounds present in vinasse.
Shuangyan MengI; Bin LiuI; Minglin XieI; Chaoxin YunI; Jin QiangI; Kaizhou HeI; Zhiwang YangII; Xiangqian WangI,*
A composite photocatalyst, xTCN, was synthesized using a simple one-step hydrothermal method, with H2O2 as the oxidant. This approach effectively reduced the bandgap energy and minimized the recombination of photogenerated carriers. The bandgap structure of g-C3N4 was modified by the incorporation of an O atom, improving the separation efficiency of the photogenerated electrons and holes.
Andreza L. MoreiraI; Janevane S. de CastroI,II; Anderson V. ChavesI; Pierre B. A. FechineI; Pedro de Lima-NetoI,;
Francisco W. P. RibeiroIII; Paulo N. S. CascianoI; Adriana N. CorreiaI,*
Schematic diagram of the procedure used. It consists of a glassy carbon electrode modified with graphene oxide and zinc stannate and a potentiostat/galvanostat coupled to a computer and can be used for the analysis of promethazine hydrochloride.
Marcelo F. L. OliveiraI; Valdir F. Veiga-JuniorII; Marcia G. OliveiraI,; Fernanda Cristina F. BragaI,*
The study investigates thermoplastic starch (TPS) biocomposites with ucuuba fibers, focusing on the effect of buriti pulp oil. This oil improved the matrix, decreasing hydrophilicity and slightly increasing strength, while rheological and scanning electron microscopy (SEM) analyses confirmed better plasticization and enhanced thermal stability.
Rafaela J. L. Gouveia-RamosI,*; Alex S. MoraesII
; Arthur L. Silva de AraújoII
; Larissa M. S. GomesII
; Thaís J. M. P. SoutoII
; Beatriz S. SantosI
; Otávio P. Santos JúniorIII
; Romildo M. HolandaI
; Gledson Luiz Pontes de AlmeidaI
In the research, a bio adsorbent was produced as an alternative to textile wastewater treatment and could act as a tool for recycling dyes and saving water. This process would reduce the costs of dyeing fabrics by obtaining a new "ecological dye" for subsequent tanning.
Mateus F. BritoI; Thayssa S. F. FagundesII,III; Paula C. JimenezIV; Alessandra L. ValverdeI,*
A scientist is confused by the number of articles about marine organisms used as medicine and how they change over time. Talking to another scientist, they decide to write a review article to compile the data into a single document.
Gabrielle O. P. Costa; Pedro C. de Araujo; Renata T. M. P. de Souza; Matheus S. B. da Silva; Eliana C. F. Spaziani;
Ana C. Kasseboehmer
Structuring concepts in organic chemistry through textbooks and university professors' perspectives. The image highlights key topics such as chemical bonding, stereochemistry, structure, and acidity-basicity, reinforcing the need for integrated conceptual understanding in teaching.
Lisiane B. Lima; Daniel C. A. Ribeiro; Guilherme L. Dorneles; Carla Sirtori; Camila G. Passos
This research analyzes the potential of preparing Case Study statements in postgraduate chemistry courses as a means of incorporating the principles of critical Environmental Education.
Gabriel N. F. NettoI; Flávia F. de C. MarquesI; Rafaella R. A. PeixotoII
; Christiane B. DuyckI,*
The microtitration of iron in dietary suplements by dichromate is presented as a sustainable alternative method to classical dichrometry, with less exposure and minimizing the generation of toxic residues.
Melina MurgelI,*; Diorleno SantosII; Liliana MarzoratiI
Science Communication pieces created by undergraduate students were analyzed for the presence of the Structural Axes of Scientific Literacy. Results showed prevalence of chemical concepts and Science, Technology, Society, and Environment (STSE) discussions but indicated a need for further attention to Nature of Science.
Paula F. FilodaI,*; Tais PolettiI,II; Bruno N. da RosaI,II
; Caroline I. SilveiraI,II; Alexandre M. MachadoIII; Jeanifer T. CamachoI; Samuel A. PereiraI,II; Clarissa M. M. dos SantosIV
; Claudio M. P. PereiraI,II
Chemical concepts behind fingerprints addressed through a forensic situation, in order to arouse students' interest and curiosity during teaching.
Janaína P. Silva; Juliana A. S. Oliveira; Wladmir T. Silva; Natália R. S. Araujo; Rita C. O. Sebastião*
Integration between teaching, research and extension, pillars of the 1000 Future Scientists program, highlighting the importance of university extension in the articulation between academic knowledge and teaching through social practices.
Cássius K. NascimentoI; Breno R. L. GalvãoII; João P. BragaIII,*
Julius Robert Oppenheimer visited the city of Belo Horizonte in his first trip to Brazil in 1953. In an interview, he said "Brazil's future atomic industry should be located in Minas Gerais".
Paola B. Abib; Flávia M. de Freitas
; Bruno dos S. Pastoriza
; Fábio A. Sangiogo*
Innovation in Chemistry was investigated and some themes emerged, relating to the production of new materials, meeting energy demands, sustainability and human health.
Hector H. S. MedradoI,II,*; Rodrigo G. de Souza GoisI,III
; Gildo R. S. FerreiraIV
; Carlos Alberto de Carvalho FilhoII
Radioactive sources are widely used in modern society but are not widely known by the lay public. Unfortunately, these materials can be stolen and can cause serious problems to society. Assessing this kind of event is only possible if nuclear chemistry and radiochemistry concepts are recognized.
Helena Mannochio-RussoI,*; Fábio G. DeloloII
; Rayane C. F. SilvaII
; Francisco L. F. da SilvaIII
; Eduarda A. MoreiraIV
; Vanessa NascimentoV
; Rodolfo G. FiorotV
; Irlon M. FerreiraVI
; Juliana C. ThomasVII
; Wilhan D. G. NunesI
; Alan C. PilonVIII
; Romeu C. Rocha-FilhoIX
Mapping the landscape of early-career researchers in chemistry across Brazil, highlighting demographic trends, research productivity, and challenges.
Ana Paula de Lima BatistaI,#,*; Antonio Gustavo Sampaio de Oliveira-FilhoII,#,*;
Romeu C. Rocha-FilhoI,#,*
;
Yuri Alexandre AotoIII,IV,#,*
Overlay of the different formats (2025 versions) of the periodic table of the elements of the Brazilian Chemical Society: in the background, the front of the A4 format, overlaid in sequence by the poster format and the digital format.
Dalva L. A. de FariaI,II,*; Joel C. RubimIII; Marcia L. A. TemperiniI
; Mauro C. C. RibeiroI
; Paola CorioI; Paulo S. SantosI;
Rômulo A. AndoI; Yoshio KawanoI
Oswaldo Sala played a pioneering role in the introduction and development of vibrational spectroscopy in Brazil and Latin America. His trajectory is here detailed, from his hiring by USP (IAG 1949) to the consolidation of his research group at IQUSP, from 1969 onwards.
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