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EDIÇÃO ATUAL vol. 47, No. 4, 2024



Artigo de Capa
Quim. Nova 2024, 47(4), e-20230128, 1-8

Uso de setas no contexto da aprendizagem em química e a importância do seu simbolismo

Tiago Gomes dos SantosI; Valdiney Vieira da SilvaII; André Gustavo Ribeiro MendonçaIII; Iara Terra de OliveiraIII; Wander Gustavo BoteroIII,*

The arrows applied in chemistry are fundamental and their symbolism goes beyond a simple representation. This work seeks to propose a reflection on the correct use of arrows, as a representation tool from the point of view of chemical symbolism.

http://dx.doi.org/10.21577/0100-4042.20230128

Publicado online: novembro 16, 2023
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Artigo de Contra Capa
Quim. Nova 2024, 47(4), e-20230116, 1-7

Monitoramento de trihalometanos (THMS) e da qualidade da água para abastecimento público da cidade de Cavalcante, Goiás

Dalila Kênia OliveiraI; Larissa Queiroz SilvaII; Núbia Natália de BritoII,*

Removal of trihalomethanes and purification of water by double filtration.

http://dx.doi.org/10.21577/0100-4042.20230116

Publicado online: outubro 25, 2023
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Editorial Quim. Nova 2024, 47(4), e-20240039, 1

 

Publicação de artigos científicos e IA: uma revolução em curso

Giovanna MachadoI; Jorge M. DavidII; Nelson H. MorgonIII


http://dx.doi.org/10.21577/0100-4042.20240039

Artigo Quim. Nova 2024, 47(4), e-20230120, 1-7

 

Síntese, caracterização, atividade antimicrobiana de nanopartículas de ferrita de cobre e sua incorporação em cimento de ionômero de vidro

Thays M. RibeiroI; Luciena dos S. FerreiraII; Isabela A. P. FariasIII,*; Fábio C. SampaioI; Jocianelle M. F. F. NunesI


Copper ferrite was synthetized, and characterized by XRD, Rietveld method, FT-IR and FESEM. Antimicrobial activity was evaluated by agar diffusion and modified minimum inhibitory concentration. Modified GIC was tested the Vickers microhardness.

http://dx.doi.org/10.21577/0100-4042.20230120

Publicado online: outubro 31, 2023
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Quim. Nova 2024, 47(4), e-20230121, 1-6

 

Catalytic carbon dots for bactericidal activity through enhanced reactive oxygen species generation

Xiaoling HuI; Boxuan LiI; Yazhen LiuI; Baojian LiI; Ling FangII; Quan ZhouII; Wenping ZhangI,*


LCDs can generate ROS under the light-emitting diode light, which kill two pathogenic bacteria, including methicillin-resistant S. aureus and E. coli. LCDs are suitable for wound healing treatments and display great potential in biomedical applications.

http://dx.doi.org/10.21577/0100-4042.20230121

Publicado online: novembro 6, 2023
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Quim. Nova 2024, 47(4), e-20230123, 1-6

 

Alcaloides sesquiterpênicos isolados de Maytenus distichophylla (Celastraceae)

Pedro Thiago Ramalho de FigueiredoI; Marcelo Cavalcante DuarteII; Laísa Vilar CordeiroI; Renata Priscila Barros de MenezesI; Edeltrudes de Oliveira LimaI; Marcus Tullius ScottiI; Josean Fechine TavaresI; Vicente Carlos de Oliveira CostaI; Marcelo Sobral da SilvaI,*


The phytochemical study from the roots of Maytenus distichophylla Mart. ex Reissek (Celastraceae) resulted in the isolation of seven sesquiterpene pyridine alkaloids which were subjected to evaluation of their antimicrobial activity.

http://dx.doi.org/10.21577/0100-4042.20230123

Publicado online: novembro 6, 2023
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Quim. Nova 2024, 47(4), e-20230124, 1-6

 

Slow release drug based on hydroxyurea/chitosan cross-linked matrix

Seta AzadI; Layla Jasim AbbasII,*


Controlled release hydroxyurea (cancer drug) based on hydrogel swelling mechanism of low-degree cross-linked chitosan. An efficient high-loading capacity scheme with a better-controlled rate of drug release with possible quantified dosage.

http://dx.doi.org/10.21577/0100-4042.20230124

Publicado online: novembro 8, 2023
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Quim. Nova 2024, 47(4), e-20230126, 1-8

 

Antihypertensive and antidiabetic peptides derived from in silico simulated gastrointestinal digestion of quinoa (Chenopodium quinoa) globulins and molecular docking study

Rosana ChirinosI,*; Jamerccy Rodriguez-DiazI; Sebastian AnticonaI; Ana Aguilar-GalvezI; Romina PedreschiII; David CamposI,*


Peptides obtained from simulated in silico gastrointestinal digestion of quinoa globulins presented both potential ACE and DPP-IV inhibitory properties which were evaluated by molecular docking.

http://dx.doi.org/10.21577/0100-4042.20230126

Publicado online: novembro 14, 2023
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Quim. Nova 2024, 47(4), e-20230127, 1-10

 

Structural optimization of jet pump based on BP neural network

Bo Liu*


This paper designs a new jet pump and use the BP neural network to optimize its structure.

http://dx.doi.org/10.21577/0100-4042.20230127

Publicado online: novembro 16, 2023
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Revisão Quim. Nova 2024, 47(4), e-20230135, 1-26

 

Uma nova era da incorporação de átomo de flúor em compostos orgânicos: métodos modernos e uso da espectroscopia de ressonância magnética de 19F

Cassia Chiari; Cláudio F. Tormena*


Modern fluorination methods of organic compounds using electrophilic and nucleophilic agents and use of 19F NMR as a powerful tool for structural elucidation, intermediates identification and reaction monitoring.

http://dx.doi.org/10.21577/0100-4042.20230135

Publicado online: novembro 23, 2023
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Educação Quim. Nova 2024, 47(4), e-20230122, 1-10

 

Percepções docentes sobre a utilização da metodologia de resolução de problemas para a educação inclusiva no ensino de química e ciências

Franciane S. C. de Lima; Denise M. Bohn; Daniel das C. de A. Ribeiro; Camila G. Passos*


Problem-solving as a possibility for Inclusive Education. Considering the different possibilities of resolutions and representations of scientific knowledge favors respect for the specificities of human development.

http://dx.doi.org/10.21577/0100-4042.20230122

Publicado online: novembro 6, 2023
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Quim. Nova 2024, 47(4), e-20230129, 1-9

 

Contribuições dos institutos federais para o desenvolvimento de formação inicial de professores de química no Brasil

Juraci Lourenço TeixeiraI,II,*; Nicéa Quintino AmauroI; Hélder Eterno da SilveiraI


The Federal Technical Schools in Brazil have evolved over the last century, reaching the Federal Institutes of Science and Technology Education that today offer one vertical education, offer from elementary to postgraduate, including teacher's degree in exact sciences.

http://dx.doi.org/10.21577/0100-4042.20230129

Publicado online: novembro 16, 2023
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Assuntos Gerais Quim. Nova 2024, 47(4), e-20230118, 1-6

 

O uso das ferramentas da análise da superfície de hirshfeld no estudo das ligações não-covalentes em complexos correlatos

Eduardo M. Iwaya; Avany J. F. Miorim; Dayane M. Reis*


The Hirshfeld surface analysis tools available in the CrystalExplorer® software allow a qualitative and quantitative visualization of non-covalent interactions in related crystalline structures.

http://dx.doi.org/10.21577/0100-4042.20230118

Publicado online: outubro 27, 2023
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