Results 111 to 120 of about 286,670 (292)

Self‐Powered All‐in‐One Wearable Bioelectronics Driven by Pneumatic Energy Buffering of Daily Footsteps

open access: yesAdvanced Science, EarlyView.
A pneumatic energy‐buffering strategy transforms transient and intermittent footsteps into quasi‐continuous electrical energy for a self‐powered wearable biosensing platform. The footwear‐integrated air‐pumping harvester, combined with the rationally designed power‐management system, powers a wearable ankle PPG device with reduced motion artifacts ...
Ji‐Seok Kim   +8 more
wiley   +1 more source

Robust design methodologies: application to compressor blades

open access: yes, 2006
Compressor blades are subtle aerodynamic shapes designed after years of research and insight. They inevitably show deviations from their desired shapes due to manufacturing errors, erosion or foreign object damage.
Kumar, Apurva
core   +1 more source

High-Performance Coaxial Counter-Rotating Triboelectric Nanogenerator with Lift–Drag Hybrid Blades for Wind Energy Harvesting

open access: yesNanomaterials
Wind energy holds potential for in-situ powering large-scale distributed wireless sensor nodes (WSNs) in the Internet of Things (IoT) era. To achieve high performance in wind energy harvesting, a coaxial counter-rotating triboelectric nanogenerator with ...
Fei Yan   +8 more
doaj   +1 more source

Basal Plane Graphene Coated Zn Powder for High Performance Aqueous Zn Metal Batteries

open access: yesAdvanced Science, EarlyView.
A mechanofusion‐driven dry coating forms a hydrophobic graphene shell on Zn powder, stabilizing the electrode‐electrolyte interface. This basal‐plane‐rich protective layer modifies the Zn2+ solvation environment and promotes preferential growth along the (002) plane, suppressing dendrite and parasitic reactions.
Dongju Kim   +8 more
wiley   +1 more source

The optimum position of impeller splitter blades of a centrifugal pump equipped with vaned diffuser [PDF]

open access: yesFME Transactions, 2018
The present investigation has been concentrated on the optimum, circumferential position of the impeller splitter blades of a centrifugal pump equipped with vaned diffuser, numerically and experimentally. In fact, five different circumferential positions
Davood Khoeini, Mohammad Reza Tavakoli
doaj  

Forced response prediction for industrial gas turbine blades [PDF]

open access: yes, 2006
A highly efficient aeromechanical forced response system is developed for predicting resonant forced vibration of turbomachinery blades with the capabilities of fully 3-D non-linear unsteady aerodynamics, 3-D finite element modal analysis and blade root ...
Moffatt, Stuart
core  

A Magnetic‐Driven Self‐Rotation‐Stabilized Miniature Swimming Robot

open access: yesAdvanced Science, EarlyView.
Inspired by the stable rotational descent of seeds in nature, this study designs a magnetic‐driven self‐rotation‐stabilized miniature swimming robot (MSMSR). Based on a resonance‐driven strategy, the robot exhibits high swimming performance, offering enhanced directional swimming and improved resistance to water flow disturbances compared to existing ...
Fujun Wang   +4 more
wiley   +1 more source

Hydroacoustic activity of the ship propeller operation

open access: yesArchives of Acoustics, 2014
The paper presents ship propellers as the source of a variable pressure field in water. The frequency spectrum of this field covers the entire audible range and beyond this range.
J. A. Szantyr, T. Koronowicz
doaj  

Performance of Margaret Sutherland's Sonata for Violin and Piano (1925).

open access: yes, 2003
Roles : David Lockett - piano ; Margaret Blades - violin. Extent : 30 minutes. Promoted by Jurlique (Ngeringa Farm) Concert Series.
Blades, M., Lockett, D.
core  

A NASTRAN primer for the analysis of rotating flexible blades [PDF]

open access: yes, 1987
This primer provides documentation for using MSC NASTRAN in analyzing rotating flexible blades. The analysis of these blades includes geometrically nonlinear (large displacement) analysis under centrifugal loading, and frequency and mode shape (normal ...
Lawrence, Charles   +3 more
core  

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