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EDIÇÃO ATUAL vol. 47, No. 4, 2024
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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
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
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
Total access: 515
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
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
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
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
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
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
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
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
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
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
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