Results 41 to 50 of about 963 (111)

A Soft Robotic Jellyfish with Decoupled Actuators for Agile 3D Locomotion

Advanced Intelligent Systems, EarlyView.
This study presents a soft robotic jellyfish featuring a functionally decoupled actuation architecture. By separating propulsion, steering, and vertical regulation into independent modules, the robot overcomes conventional coupled‐motion limitations. Utilizing a passive‐valve‐based differential drag strategy and lateral water jets, it achieves agile 3D
Zhuoheng Li, Ze Huang, Salvador Pané, Josep Puigmartí‐Luis, Jiwan Kim, Ji‐Hun Bae, Bumjin Jang   +6 more
wiley   +1 more source

THE GALVANOSTATIC AND POTENTIODYNAMIC (IN CONSTANT VOLTAGE MODE) ELECTROPOLYMERIZATIONS OF HETEROCYCLIC COMPOUNDS. THE PROCESSES AND THEIR MATHEMATICAL DESCRIPTION [PDF]

Tecnologia em Metalurgia, Materiais e Mineração, 2013
The electrochemical processes of the anodic electropolymerization of heterocyclic compounds in galvanostatic and potentiodynamic constant-voltage mode, realized to obtain the corrosion-protecting coatings, are mathematically described.
Volodymyr Tkach, Vasyl´ Nechyporuk, Vasyl´ Nechyporuk   +2 more
doaj   +1 more source

Arene Incorporation and Ring Expansion in the Thermal Decomposition of a Divanadium(III) Complex With Four Bridging Methyl Groups

Chemistry – A European Journal, EarlyView.
Thermolysis of [{VCp*(µ‐CH3)2}2] (Cp* = η5‐C5Me5) in hexane leads to a tetranuclear cube‐type methylidene complex [{VCp*(µ3‐CH2)}4], while in benzenic solvents C6H5R produces the formal insertion of a CH fragment into the six‐membered aromatic ring of a solvent molecule to give trovacene derivatives with η7‐cycloheptatrienyl ligands [VCp*(η7‐C7H6R ...
Adrián Calvo‐Molina, Rodrigo González‐Prieto, Jesús Jover, Adrián Pérez‐Redondo, José Luis Priego, Carlos Yélamos   +5 more
wiley   +1 more source

Synthesis, Molecular Structure, Thermal and Spectroscopic Analysis of a Novel Bromochalcone Derivative with Larvicidal Activity

Crystals, 2022
Chalcones belong to the flavonoids family and are natural compounds which show promising larvicidal property against Aedes aegypti larvae. Aiming to obtain a synthetic chalcone derivative with high larvicidal activity, herein, a bromochalcone derivative,
Pollyana P. Firmino, Jaqueline E. Queiroz, Lucas D. Dias, Patricia R. S. Wenceslau, Larissa M. de Souza, Ievgeniia Iermak, Wesley F. Vaz, Jean M. F. Custódio, Allen G. Oliver, Gilberto L. B. de Aquino, Hamilton B. Napolitano   +10 more
doaj   +1 more source

Cytogenotoxic Effects of Fluopyram in Allium cepa Root Cells Involving Microtubule Disruption

Environmental Toxicology, EarlyView.
ABSTRACT Fluopyram is a next‐generation fungicide widely used in agriculture; however, its persistence in soils and mobility toward aquatic systems have raised concerns regarding potential ecotoxicological risks. This study evaluated the cytogenotoxic effects of a commercial fluopyram‐based pesticide formulation on Allium cepa root meristem cells ...
Carlos Filipe Camilo‐Cotrim, Natanael Alves da Silva, Gabriela Gomes Lima, Igor Rodrigues Vasconcelos, Luciana Souza Ondei, Elisa Flávia Luiz Cardoso Bailão, Antônio Sérgio Nakao de Aguiar, Marcelino Benvindo‐Souza, Leonardo Luiz Borges, Virgínia Damin, Luciane Madureira Almeida   +10 more
wiley   +1 more source

Antimicrobial Residues in a Key Cerrado River: Distribution, Persistence, and Effects on Zebrafish Embryo‐Larval Development

Environmental Toxicology, EarlyView.
ABSTRACT The current study aimed to quantify the antimicrobials amoxicillin (AMX), cefazolin (CFZ), chloramphenicol (CHL), metronidazole (MTZ), and sulfamethoxazole (SX) in effluents and surface water of an important Cerrado river, calculate their half‐lives, and analyze their ecotoxicity following single and combined exposures.
Náthala Maria Simão, Igor Romeiro dos Santos, Jerônimo Raimundo de Oliveira Neto, Flávio Olimpio Sanches Neto, Felipe Cirqueira Dias, Jéssyca Moreira Morais, Lorranny Pereira de Assis Valadares, Naiara Raica Lopes de Oliveira, Mirelle Garcia Silva Bailão, Luiz Carlos da Cunha, Valter Henrique Carvalho‐Silva, Thiago Lopes Rocha, Elisa Flávia Luiz Cardoso Bailão   +12 more
wiley   +1 more source

Biodiesel stabilization by dibrominated dimethoxybenzaldehydes: a comprehensive computational perspective

Frontiers in Chemical Engineering
The oxidative instability of biodiesel remains a critical barrier to its widespread adoption despite its advantages as renewable, biodegradable, and low-emission fuel.
Igor D. Borges, Igor D. Borges, Antônio S. N. Aguiar, Antônio S. N. Aguiar, Ademir J. Camargo, Hamilton B. Napolitano, Hamilton B. Napolitano   +6 more
doaj   +1 more source

Proton transfer from 1,4-pentadiene to superoxide radical anion: a QTAIM analysis

Revista Colombiana de Química, 2014
We studied the bis-allylic proton transferreaction from 1,4-pentadiene to superoxideradical anion (O2·־). Minima andtransition state geometries, as well asthermochemical parameters were computedat the B3LYP/6-311+G(3df,2p)level of theory.
Angela Rodríguez-Serrano, Martha Daza, Markus Doerr, Jose Luis Villaveces   +3 more
doaj  

Proteinvermittelte Kupfer‐Redoxregulation: Rolle von Disulfidbrücken und allosterischer Modulation

Angewandte Chemie, Volume 138, Issue 15, 6 April 2026.
Copper binding triggers structural changes that expose a reactive disulphide bridge, enabling intrinsic Cu(II) reduction in folded proteins. SAXS, XAS, and QM/MM simulations reveal how globular proteins such as HSA and SOD1 employ disulphide‐mediated dynamics to modulate site accessibility and control copper redox chemistry.
Rebecca Sternke‐Hoffmann, Chang Liu, Xue Wang, Hegne Pupart, Xun Sun, Jan Gui‐Hyon Dreiser, Peep Palumaa, Qinghua Liao, Matthias Krack, Jinghui Luo   +9 more
wiley   +1 more source

Applying a Nonspin-Flip Reaction Scheme to Explain for the Doublet Sulfide Oxides SMO2 Observed for the Reactions of SO2 with V(4F), Nb(6D), and Ta(4F)

Journal of Nanotechnology, 2018
Energy profiles linking the reactants M + SO2 (M = V(4F), Nb(6D;4F), and Ta(4F)) with the products observed for these reactions under matrix-isolation conditions, mainly the oxide complex OV(η2-SO) and the sulfide oxides SVO2, SNbO2, and STaO2, have been
Carlos Velásquez, Ana E. Torres, Jorge M. Seminario, Fernando Colmenares   +3 more
doaj   +1 more source