Results 71 to 80 of about 4,725,379 (276)

Adaptive Twisting Metamaterials

open access: yesAdvanced Materials, EarlyView.
This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri   +6 more
wiley   +1 more source

Incipient motion of sediment particles in the presence of bed forms under decelerating and accelerating flows

open access: yesJournal of Hydrology and Hydromechanics, 2022
This paper investigates the incipient motion of sediment particles under non-uniform flow in river and laboratory. In rivers, the non-uniform flow is often observed due to the presence of various bed forms.
Dodangeh Esmaeil, Afzalimehr Hossein
doaj   +1 more source

Single‐Atom Photocatalyst as Floatable Artificial Leaf for Upcycling Oceanic Plastic Waste

open access: yesAdvanced Materials, EarlyView.
To resolve the catastrophic disaster of oceanic plastic pollution, the novel Ru single atom loaded ZnIn2S4 photocatalysts, in the forms of powder or floatable artificial leaf, were prepared for direct conversion of raw polypropylene plastic into valuable chemicals. The optimized catalyst exhibits exceptional performance, with a total formic/acetic acid
Amin Talebian‐Kiakalaieh   +6 more
wiley   +1 more source

Application of a Random Forest Method to Estimate the Water Use Efficiency on the Qinghai Tibetan Plateau During the 1982–2018 Growing Season

open access: yesRemote Sensing
Water use efficiency (WUE) reflects the quantitative relationship between vegetation gross primary productivity (GPP) and surface evapotranspiration (ET), serving as a crucial indicator for assessing the coupling of carbon and water cycles in ecosystems.
Xuemei Wu   +8 more
doaj   +1 more source

Self‐Oscillating Helix Showing Amplified Winding and Unwinding Motions

open access: yesAdvanced Materials, EarlyView.
The hydrogel helix exhibits autonomous oscillation synchronized with the Ru(bpy)32+/3+ redox cycle in the Belousov–Zhabotinsky reaction. Periodic winding–unwinding accompanies magnified motion along one direction within the gel phase. ABSTRACT Helical architectures in nature amplify motion via winding–unwinding.
Taehun Chung   +11 more
wiley   +1 more source

Watershed management and gully erosion control are an approach for sustainable rural development; a case study of Qarnaq village in Golestan province [PDF]

open access: yesمسکن و محیط روستا, 2023
Soil erosion in Iran is one of the major threats to rural settlements. Gully erosion plays a significant role in land degradation, particularly in semi-arid regions and soils with low cohesion.
Saeedmohammad Sabouri
doaj  

Natural disasters as a development opportunity: a spatial economic resilience interpretation

open access: yesReview of Regional Research, 2020
Natural disasters are usually regarded as damage factors causing high private and social costs. Notwithstanding the incontestable validity of this premise, natural disasters do not necessarily lead to a structural deprivation of the area affected. Recent
A. Bănică, K. Kourtit, P. Nijkamp
semanticscholar   +1 more source

Decoding High‐voltage LiCoO2: From Degradation to Stabilization Toward Durable Li‐ion Batteries

open access: yesAdvanced Materials, EarlyView.
This review systematically addresses the degradation mechanisms and stabilization strategies for high‐voltage LiCoO2 cathodes. Key enhancement approaches including foreign‐ion doping, surface modifications, structural design, and electrolyte optimization are critically assessed.
Zezhou Lin   +6 more
wiley   +1 more source

The Application of Numerical Simulation in Debris Flow Disaster Early Warning: A Case Study of Shiyang Gully, China

open access: yesLand
This study explores the application of numerical simulation in debris flow disaster early warning, using the Shiyang Gully in China as a case study. Using both the HEC-HMS and FLO-2D, the 18 June 2017 debris flow event was reconstructed to analyze the ...
Hao Zheng   +4 more
doaj   +1 more source

DEVELOPMENT OF A GROUP OF MOBILE ROBOTS FOR CONDUCTING COMPREHENSIVE RESEARCH OF DANGEROUS WAVE CHARACTERISTICS IN COASTAL ZONES [PDF]

open access: yesScience of Tsunami Hazards, 2018
New methods and approaches for carrying out comprehensive measurements of hazardous waves (tsunami, storm surges) and background wave climate with telemetrically related group of ground, surface and underwater based robots are discussed.
A. Kurkin   +7 more
doaj  

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