Results 61 to 70 of about 1,281,025 (295)

Passive atomic-scale optical sensors for mapping light flux in ultra-small cavities

open access: yesScientific Reports, 2023
Understanding light propagation and attenuation in cavities is limited by lack of applicable light sensing technologies. Here we demonstrate the use of light-sensitive metastable states in wide bandgap aluminosilicates (feldspar) as passive optical ...
Pavao Andričević   +4 more
doaj   +1 more source

Study on Traveling Wave Wall Control Method for Suppressing Wake of Flow around a Circular Cylinder at Moderate Reynolds Number

open access: yesApplied Sciences, 2022
In the present paper, the computational fluid dynamics (CFD) numerical simulation was utilized to investigate the effectiveness of the transverse traveling wave wall (TWW) method with the expectation of inhibiting the vortex shedding from a fixed ...
Xin Liu, Weifeng Bai, Feng Xu
doaj   +1 more source

Propagation of longitudinal viscoelastic stress waves in a fluid saturated Voigt porous medium

open access: yesAin Shams Engineering Journal, 2018
This paper is concerned with giving a simple mathematical model on the propagation of longitudinal stress waves in a Voigt viscoelastic porous media. This model is congruent with the Frankel-Biot theory and describes the differences between vibrations of
Ahmad Barzkar, Hojatollah Adibi
doaj   +1 more source

Expectation Propagation Detector for Extra-Large Scale Massive MIMO [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2019
The order-of-magnitude increase in the dimension of antenna arrays, which forms extra-large-scale massive multiple-input-multiple-output (MIMO) systems, enables substantial improvement in spectral efficiency, energy efficiency, and spatial resolution ...
Hanqing Wang   +4 more
semanticscholar   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

Model-based clustering of multipath propagation in powerline communication channels

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Powerline communication (PLC) channels are known to exhibit multipath propagation behaviour. The authors present a model-based framework to address the challenge of clustering multipath propagation components (MPCs) in PLC channels for indoor low-voltage
Kealeboga L. Mokise, Herman C. Myburgh
doaj   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

VAMP-Based Kalman Filtering Under Non-Gaussian Process Noise

open access: yesIEEE Open Journal of Signal Processing
Estimating time-varying signals becomes particularly challenging in the face of non-Gaussian (e.g., sparse) and/or rapidly time-varying process noise.
Tiancheng Gao   +3 more
doaj   +1 more source

Bilinear Hybrid Expectation Maximization and Expectation Propagation for Semi-Blind Channel Estimation

open access: yesEuropean Signal Processing Conference
This paper discusses channel estimation during uplink transmission in Cell-Free (CF) Massive MIMO (MaMIMO) systems. We model the problem as a semi-blind estimation problem with independent and identically distributed (i.i.d.) Gaussian input.
Zilu Zhao, Dirk T. M. Slock
semanticscholar   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

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