Experimental and theoretical studies of subsonic fan noise [PDF]
The noise generated by inlet turbulence impinging on a subsonic axial flow fan was studied as a function of tip speed, flow coefficient, and intensity and scale of turbulence was carried out. Both turbulence and far field acoustic measurements were made.
Berkofske, K., Mani, R.
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Probing Cellular Activity Via Charge‐Sensitive Quantum Nanoprobes
Advanced Materials, EarlyView.A new quantum sensing modality detects shifts in zero‐field splitting caused by charge rearrangement with diamond nanocrystals in response to cellular activity. These electric‐field‐driven effects provide an alternative to temperature‐based interpretations, enabling real‐time, single‐cell readout of inflammation.
Uri Zvi +16 more
wiley +1 more source
Some observations about the components of transonic fan noise from narrow-band spectral analysis [PDF]
Qualitative and quantitative spectral analyses are presented that give the broadband-noise, discrete-tone, and multiple-tone properties of the noise generated by a full-scale high-bypass single-stage axial-flow transonic fan (fan B, NASA Quiet Engine ...
Saule, A. V.
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Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application
Advanced Materials, EarlyView.This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong +12 more
wiley +1 more source
Investigation of the unsteady pressure distribution on the blade of an axial flow fan [PDF]
A major source of the noise generated by high bypass ratio aircraft fan engines is the unsteady pressures (forces and moments) acting on the fan blades.
Henderson, R. E.
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Sculpting the Future of Bone: The Evolution of Absorbable Materials in Orthopedics
Advanced Materials, EarlyView.This review summarizes the current status of polymeric, ceramic, and metallic absorbable materials in orthopedic applications, and highlights several innovative strategies designed to enhance mechanical performance, control degradation, and promote bioactivity. We also discuss the progress and translational potential of absorbable materials in treating
Zhao Wang +13 more
wiley +1 more source
Blade-to-Blade Variations in Shocks Upstream of Both a Forward-Swept and an Aft-Swept Fan [PDF]
Detailed laser Doppler velocimeter (LDV) flow field measurements were made upstream of two fans, one forward-swept and one aft-swept, in order to learn more about the shocks which propagate upstream of these rotors when they are operated at supersonic ...
Krupar, Martin J., Podboy, Gary G.
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Advanced Materials, EarlyView.The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti +8 more
wiley +1 more source
Experimental study on variable frequency control and air leakage control of multi-fan combination in subway tunnels. [PDF]
Sci RepYing G +4 more
europepmc +1 more source
Correlation of part-span damper losses through transonic rotors operating near design point [PDF]
The design-point losses caused by part-span dampers (PSD) were correlated for 21 transonic axial flow fan rotors that had tip speeds varying from 350 to 488 meters per second and design pressure ratios of 1.5 to 2.0.
Roberts, W. B.
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