Results 81 to 90 of about 764 (259)

Numerical and experimental study on P‐wave propagation across a rock joint with different orientations

open access: yesDeep Underground Science and Engineering, EarlyView.
Joint orientation significantly affects P‐wave velocity, with the highest velocity at zero‐degree angles, decreasing to 30° as the angle increases. The velocity increases slightly from 30 to 45 degrees but sharply decreases from 45 to 90 degrees. Abstract Determination of the required parameters in different science contexts using the ultrasonic wave ...
Yaghoob Zarei   +4 more
wiley   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang   +6 more
wiley   +1 more source

Spatially Configuring RGO Interlayers With PANI/Lignin Nanoparticles Toward High‐Performance Asymmetric Supercapacitors

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A novel PLNPs@RGO electrode, self‐assembled from polyaniline/lignin conjugated mesoporous nanoparticles (PLNPs) and reduced graphene oxide, exhibits excellent capacitance and high energy density in supercapacitors. The high‐performance flexible solid‐state asymmetric supercapacitor (FSAC) plays a critical role in advancing the innovation of next ...
Mengya Sun   +6 more
wiley   +1 more source

Social Approaches to Studying the Artworks of Sultan Mohammad Using Principles of Islamic Art [PDF]

open access: yesنگره, 2014
Whilst preserving rules and principles of Islamic art and maintaining a celestial aura, in Safavid era Sultan Mohammad demonstrates unprecedented values in his paintings; he focuses on his contemporary social occurrences, namely tyranny and injustice, in
Jalaleddin Sultan Kashefi
doaj  

Electrospun Biomass‐Derived Flexible Anodes With Hierarchical Structure via Cobalt MOF Integration for Sodium‐Ion Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Hierarchically porous, N‐doped freestanding anode enables reversible Na+ insertion/desorption and Na–Co alloying, delivering fast kinetics, structural robustness, and durable sodium‐storage performance even under bending/folding. To develop a green, sustainable, and high‐performance anode for sodium‐ion batteries (SIBs), flexible biomass‐based carbon ...
Yuqiong He   +8 more
wiley   +1 more source

Metal‐Free Halogen‐Engineered Carbon Nanotubes for Highly Efficient Oxygen Reduction Reaction

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
In work employs density functional theory screening to guide the halogen engineering of metal‐free, Cl‐mediated carbon nanotubes for a highly efficient oxygen reduction reaction (ORR). Cl‐mediation optimally tunes the electronic structure and binding energies of oxygen intermediates, delivering an ORR activity rivaling that of commercial Pt/C, high 4e−
Kai Zhao   +11 more
wiley   +1 more source

Persian lacquer painting in the 18th and 19th centuries. [PDF]

open access: yes, 1988
Lacquer, as a medium for artistic expression, was not readily chosen by Persian artists before the late Safavid period. It was during the Qajar period that delicately painted miniatures on various surfaces drew the attention of the European market to the talent of Persian artists.
openaire   +1 more source

Comparative performance of risk prediction indices for mortality or readmission following heart failure hospitalization

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 1227-1236, April 2025.
Comparative performance of 7 risk prediction indices in patients hospitalized for heart failure. In this cohort of 1206 patients, the LENT index offered the greatest discrimination, calibration, and overall accuracy in predicting 30‐day composite all‐cause mortality or readmission following hospitalization for heart failure.
Tauben Averbuch   +8 more
wiley   +1 more source

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