Results 131 to 140 of about 519,436 (318)

Supersonic Jet Excitation using Flapping Injection

open access: yes, 2013
Supersonic jet noise reduction is important for high speed military aircraft. Lower acoustic levels would reduce structural fatigue leading to longer lifetime of the jet aircraft. It is not solely structural aspects which are of importance, health issues
Andersson, Niklas   +5 more
core  

Electrical Metamaterial‐Based Interconnects‐Enabled Highly Stretchable Wireless Electrocardiography Circuit

open access: yesAdvanced Materials Technologies, EarlyView.
This article presents a novel strategy for creating highly stretchable wireless circuits using electrical metamaterial‐based interconnects (EMIs). Embedded in soft polymers and filled with liquid metal, EMIs uniquely reduce resistance under strain. A fully integrated ECG circuit demonstrates reliable performance under 100% stretch, offering a highly ...
Anan Zhang   +2 more
wiley   +1 more source

Subjective evaluation of distortions aud noises in various video tape recorders

open access: bronze, 1963
Kenji Hiwatashi   +3 more
openalex   +2 more sources

High Photoluminescence Quantum Yield and Tunable Luminescence Lifetimes in the Sub‐Second Range of CaS:Eu2+ Phosphors for Tracer Based Sorting

open access: yesAdvanced Materials Technologies, EarlyView.
Efficient plastic waste sorting is crucial for circularity. Advanced methods using lanthanide photonic tracers enhance recycling beyond near‐infrared sorting. Europium(II)‐doped phosphors, with high stability and long luminescence decay, improve tracer detection in sorting systems, enabling precise identification of different plastic materials ...
Arzu Cosgun Ergene   +5 more
wiley   +1 more source

Mechanoluminescence of Bi‐Activated NaYGeO4 Polycrystals and 3D Printed Scaffolds in the NUV/Blue and NIR Spectral Range

open access: yesAdvanced Optical Materials, EarlyView.
NUV/Blue and NIR emitting mechanoluminescent (ML) materials based on a Bi‐doped germanate compound (NYGOBx) are reported. 3D‐printing is used to fabricate complex scaffold devices from this material, suggested for use as mechanically‐activated light sources for functional illumination.
Hossein Ebrahim Hosseini   +5 more
wiley   +1 more source

Deep Unfolding-Aided Parameter Tuning for Plug-and-Play-Based Video Snapshot Compressive Imaging

open access: yesIEEE Access
Snapshot compressive imaging (SCI) captures high-dimensional data efficiently by compressing it into two-dimensional observations and reconstructing high-dimensional data from two-dimensional observations with various algorithms.
Takashi Matsuda   +2 more
doaj   +1 more source

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