1047 papers
This study demonstrates that a continuous one-stage leaching process using sodium hypochlorite (Belizna) as an oxidizer at 60°C effectively recovers 99.1% of rhenium and 96.8% of osmium from osmium-rhenium-containing lead cake, yielding commercial-grade rhenium acid and osmium sulfide alongside a lead sulfate residue.
The addition of 0.5 wt.% ZrO₂ nanoparticles to an Al-Cu-Mg alloy during powder bed fusion-laser beam processing effectively suppresses hot cracking and porosity while refining the microstructure, thereby transforming an otherwise unprintable alloy into a dense material with significantly enhanced mechanical properties.
This study characterizes the essential oil of *Mezoneuron benthamianum* as being rich in sesquiterpenes and para-cymene, demonstrating significant antibacterial activity against Gram-positive bacteria, moderate antifungal effects, and a lack of hemolytic toxicity, thereby validating its traditional medicinal use.
This study employs a non-equilibrium approach with CCSD(T)/6-311+G**//B3LYP/6–31+G** calculations to model hydrogen transfer reactions involving methanol, formaldehyde, and methane, successfully reproducing experimental thermal rate constants by accounting for zero-translational-energy complex formation, system reorganization during hydrogen transfer, heavy-atom vibrations, and collision complex lifetime.
This study demonstrates that femtosecond laser-induced fluorescence (LIF) at an optimal excitation wavelength of 360 nm offers a rapid, cost-effective, and highly sensitive alternative to traditional methods for the quantitative detection of 25-hydroxyvitamin D, achieving a linear response with an R² of 0.92 while minimizing sample preparation requirements.
This study demonstrates that co-doping Li- and Mn-rich layered oxide cathodes with NaCl and KCl significantly enhances their initial capacity, rate capability, and cycling stability, thereby improving overall battery performance despite a slight increase in production-related environmental burdens.
This DFT study elucidates the mechanistic origin of halogen-dependent reactivity in the metal-free C–3 halogenation of pyridine N-oxides, revealing that the observed reactivity trend (F > Cl > Br) arises from variations in N–X bond strength, halogen polarizability, and transition-state stabilization within a common stepwise ionic mechanism influenced by solvent effects.
This paper introduces a novel operando electrochemical diagnosis framework using a specialized reference electrode to independently characterize catalyst layers in zero-gap membrane-electrode assemblies, revealing hidden transport-driven catalyst degradation and activity loss that remain undetectable through standard cell voltage measurements.
This study employs DFT-based computational methods to analyze the gas-phase and aqueous conformational landscapes of negatively charged cytosine-containing TNA monomers, revealing distinct dominant geometries stabilized by varying intramolecular hydrogen bonding patterns and solvent effects.
This study presents a flexible hydrogel fiber-coupled SERS sensor that overcomes the rigidity limitations of conventional optical fibers to enable remote, conformal, and highly sensitive in situ detection of pesticide residues on irregular food surfaces, enhanced by intelligent identification via a convolutional neural network.