Results 151 to 160 of about 345,322 (316)

Research on Optimization of Pressure Wave Waveform of Continuous Wave Drilling Fluid Pulse Generator

open access: yesShiyou jixie, 2020
To solve the problem of poor half periodicity of pressure wave shape of continuous wave drilling fluid pulse generator, the pressure difference calculation model and numerical simulation calculation model are established, and the pressure waveform of ...
Liu Xianbo   +5 more
doaj  

Chiral Phase Change Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow   +11 more
wiley   +1 more source

Wave energy resource assessment

open access: yes, 2009
The use of satellite altimeter data for spatial mapping of the wave resource is examined.A new algorithm for estimating wave period from altimeter data is developed andvalidated, which enables estimates of wave energy converter (WEC) power to bederived ...
Mackay, Edward B.L., Mackay, Edward B L
core  

Rainfall induced transient pressure wave mechanisms and pore water pressure dynamics in tailings

open access: yes, 2023
Philosophiae Doctor - PhDTailings Storage Facilities are some of the largest engineered structures responsible for the containment of mining waste, yet some physical/hydrological processes causing slope instability are still poorly understood.
Theron, Charné
core  

Extreme Wave-Induced Pressure Distribution and Wave Forces on Tandem Pile Groups: An Experimental Study

open access: yesJournal of Marine Science and Engineering
As the foundation of marine infrastructure, pile groups are subjected to extreme wave loads. Existing research primarily focuses on regular waves and wave forces.
Wanshui Han   +4 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Coupling Anodic Activity and Stability at Ni‐Based Non‐Oxide Catalysts via Coordinating Alcohol Oxidation and Oxygen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
A cooperative and competitive interrelationship between alcohol oxidation (AOR) and water oxidation (OER) was observed on a typical anode catalyst of Ni2P. In situ Raman spectroscopy and electrochemical analyses revealed a specific complementary mechanism between them, in which OER and AOR critically contribute to the activity and stability of anodic ...
Yong Yan   +10 more
wiley   +1 more source

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