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.
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.
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.
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.
Camilo Eduardo García Henao
; Guillermo Salamanca Grosso
; Anderson Guarnizo Franco*
Magnetite nanoparticles-supported tannic acid capturing CdII and PbII from water.
Eduardo da Silva Macedo; Caroline Gonçalves; Fabiana Luvizon Germer; Eduardo Sidinei Chaves*
Deep eutectic solvent for extraction of copper from tea samples.
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.
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.
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.
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.
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.
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.
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.
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.
Yongming Shao*
; Mingyu Lu; Haomai Feng; Yucheng Hou; Yueqi Si
To address the fuel cell cold-start bottleneck, a one-dimensional (1D) multi-phase stack model was developed, and the non-dominated sorting genetic algorithm (NSGA)-II was used to optimize coolant flow rate, positive temperature coefficient (PTC) heating power, and load rate for auxiliary heating strategies. The optimal solution (0.45 kg s-1 coolant, 2375 W PTC, 0.02268 A cm-2 load rate) cuts the minimum cold-start temperature to 247.15 K and significantly enhanced performance.
Karunagaran SubramanianI; Guillermo SalgadoII; Assia BelhassanIII,*
; Lorena Gerli CandiaIV; Wilson Cardona VV
The drugs salbutamol and ipratropium bromide with their electronic structure, frontier molecular orbitals and other parameters were analyzed to evaluate their effectiveness in treating respiratory problems such as asthma and chronic obstructive lung disease.
Hongke LiuI
; Hongzhe LiuII; Aiyun HuIII,IV,*
; Haijun WangIV; Jian DingV
The seed meal was mixed with deep eutectic solvents (DES) and extracted by ultrasonic-assisted extraction and repeated extraction.
Thaynara V. NatividadeI,II; Jandira M. O. B. BrandãoII,III,IV; Alan R. PereiraII,IV; Nayara A. dos SantosI,II,IV;
Marcia H. C. NascimentoIV; Carlos R. P. CamposI; Paulo R. FilgueirasIV
; Hildegardo S. FrançaI; Wanderson RomãoI,II,IV,*
Seized gemstones and authentic gemstones were analyzed using portable Raman spectroscopy. A spectral comparison was performed using Orange and Origin software.
Wei GaoI,II,III; Xiaoju HuaI,II,III; Hanyue HuangIV; Chen DongI,II,III; Wuxiong WangIV; Haikuan YangI,II,III; Yunyang ChiI,II,III,*
; Lifang HuV*
Citral hydrazone derivative (4q) exhibited significant inhibitory activity against C. gloeosporioides. Molecular docking revealed stable binding to chitin synthase and succinate dehydrogenase via hydrogen bonds.
Paola GracianoI; Gustavo S. MatiasII; Karen G. MierloII; Ana C. R. AranhaIII,*
; Fernando H. LermenII,IV
This figure illustrates the dual impact of nanotechnology in textiles, highlighting benefits such as antimicrobial properties and enhanced resistance. It also emphasizes sustainable solutions through circular economy practices and the use of agricultural waste.
João Victor M. de AlmeidaI,II; Eclair Venturini FilhoIII; Nathália S. ConceiçãoI,II; Alan R. PereiraI,II; Julie M. M. FigueiredoIII; Ricardo M. KusterI; Hildegardo S. FrançaIII; Nayara A. dos SantosI,II,III; Wanderson RomãoI,II,III*
The graphical abstract illustrates the multifaceted study of Cannabis sativa L., integrating cannabinoid chemistry, analytical methods, and legal aspects. Molecular structures and analytical spectra highlight the critical evaluation presented in this review.
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.
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