Results 211 to 220 of about 974,195 (308)

Intelligent inversion analysis of dilatancy angle of surrounding rock based on the force of negative Poisson's ratio anchor cable

open access: yesDeep Underground Science and Engineering, EarlyView.
An intelligent inversion framework estimates the dilatancy angle of the surrounding rock from negative Poisson's ratio (NPR) anchor cable force histories. Numerical tunnel‐excavation simulations generate force data across a controlled dilatancy‐angle range, which are mapped to the target parameter using a sequential convolutional neural network (CNN ...
Li Cui   +5 more
wiley   +1 more source

A Self‐Enhanced Tandem Catalytic System for Olefin‐to‐Diol Conversion Powered by Single‐Atom Fe Catalysts With In Situ Generated Acid

open access: yesEcoEnergy, EarlyView.
A single‐atom iron catalyst with well‐defined Fe–N4 sites enables a tandem epoxidation‐hydrolysis process for converting terminal olefins to 1,2‐diols. The in situ‐generated isobutyric acid drives the hydrolysis step, affording broad substrate scope and excellent recyclability.
Tao‐Tao Liu   +7 more
wiley   +1 more source

Influenza Vaccination Willingness, Uptake, and Behavioral Drivers Among Adults Aged ≥60 Years in Henan Province: A BeSD-Based Survey with Registry Follow-Up. [PDF]

open access: yesVaccines (Basel)
Li J   +14 more
europepmc   +1 more source

Electron‐Hole Trap Regulation in Porous Ultrathin g‐C3N4 Nanosheet for Enhanced Photocatalytic H2 Evolution and CO2 Reduction

open access: yesEcoEnergy, EarlyView.
The porous ultrathin nanosheet morphology enhances bulk‐to‐surface charge‐carrier migration and reduces the interlayer distances in MCN‐NS. Additionally, the S‐C and N‐N bonds formed after S/N co‐doping in MCN‐NS served as electron and hole trapping sites reducing the charge recombination rate, thereby improving the photocatalytic H2 evolution and CO2 ...
Samuel Guemou   +7 more
wiley   +1 more source

S2–‐Mediated Adsorption Configuration Tuning Enables Selectivity Switching in CO2 Reduction Over Cu Electrocatalysts

open access: yesEcoEnergy, EarlyView.
From the perspective of adsorption configurations, this study demonstrates that the introduction of sulfide ions can tune CO2 adsorption from C‐site to O‐site on Cu surface, thereby facilitating the selectivity switch of CO2 electroreduction over Cu‐based electrocatalysts.
Yuqin Wang   +8 more
wiley   +1 more source

Decorating Carbon Nitride via the Integration of Phosphorylation with Carbon Self‐doping toward Enhanced Photocatalytic Hydrogen Evolution

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The electron transfer from the grafted ATMP to the adjacent heptazine ring can induce the proton transfer of the hydroxyls on ATMP to Pt co‐catalyst nanoparticles. This coupling of proton transfer and electron transport also promotes the separation and transport of charge carriers and therefore advances the performance of photocatalytic hydrogen ...
Yike Li   +5 more
wiley   +1 more source

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