Results 61 to 70 of about 7,321,143 (344)

A random matrix approach to detect defects in a strongly scattering polycrystal: How the memory effect can help overcome multiple scattering [PDF]

open access: yes, 2014
We report on ultrasonic imaging in a random heterogeneous medium. The goal is to detect flaws embedded deeply into a polycrystalline material. A 64-element array of piezoelectric transmitters/receivers at a central frequency of 5 MHz is used to capture ...
S. Shahjahan   +4 more
semanticscholar   +1 more source

Filtering random matrices: the effect of incomplete channel control in multiple scattering. [PDF]

open access: yesPhysical Review Letters, 2013
We present an analytic random matrix theory for the effect of incomplete channel control on the measured statistical properties of the scattering matrix of a disordered multiple-scattering medium.
A. Goetschy, A. Stone
semanticscholar   +1 more source

Conserved structural motifs in PAS, LOV, and CRY proteins regulate circadian rhythms and are therapeutic targets

open access: yesFEBS Letters, EarlyView.
Cryptochrome and PAS/LOV proteins play intricate roles in circadian clocks where they act as both sensors and mediators of protein–protein interactions. Their ubiquitous presence in signaling networks has positioned them as targets for small‐molecule therapeutics. This review provides a structural introduction to these protein families.
Eric D. Brinckman   +2 more
wiley   +1 more source

Spaceborne lidar measurement of global cloud properties through machine learning

open access: yesFrontiers in Remote Sensing
With a large footprint size, multiple scattering measurements of clouds from spaceborne lidar provide useful information about cloud physical properties, such as cloud optical depths and cloud droplet size, both during daytime and nighttime.
Karen Hu, Xiaomei Lu
doaj   +1 more source

Surface effects on the wave propagation in composites with random dispersive parallel cylindrical nanofibers

open access: yesArchives of Mechanics, 2015
The propagation of elastic waves in composites with randomly distributed parallel cylindrical nanofibers is studied. The non-classical boundary conditions on the surface of nanofibers are derived by using the surface elasticity theory.
Z. Kong, F.W. Qiang, P.J. Wei, Q. Tang
doaj   +1 more source

Optimal control of light propagation through multiple-scattering media in the presence of noise. [PDF]

open access: yesBiomedical Optics Express, 2013
We study the control of coherent light propagation through multiple-scattering media in the presence of measurement noise. In our experiments, we use a two-step optimization procedure to find the optimal incident wavefront that generates a bright focal ...
H. Yılmaz, W. Vos, A. Mosk
semanticscholar   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Deriving Snow Depth From ICESat-2 Lidar Multiple Scattering Measurements: Uncertainty Analyses

open access: yesFrontiers in Remote Sensing, 2022
The application of diffusion theory and Monte Carlo lidar radiative transfer simulations presented in Part I of this series of study suggests that snow depth can be derived from the first-, second- and third-order moments of the lidar backscattering ...
Xiaomei Lu   +22 more
doaj   +1 more source

Multiple Parton Scattering in Nuclei: Parton Energy Loss [PDF]

open access: yes, 2001
Multiple parton scattering and induced parton energy loss is studied in deeply inelastic scattering (DIS) off nuclei. The effect of multiple scattering of a highly off-shell quark and the induced parton energy loss is expressed in terms of the ...
Airapetian   +38 more
core   +4 more sources

Multiple scattering in observations of the GPM dual‐frequency precipitation radar: Evidence and impact on retrievals

open access: yesJournal of Geophysical Research - Atmospheres, 2015
This paper illustrates how multiple scattering signatures affect Global Precipitation Measuring (GPM) Mission Dual‐Frequency Precipitation Radar (DPR) Ku and Ka band reflectivity measurements and how they are consistent with prelaunch assessments based ...
Alessandro Battaglia   +3 more
semanticscholar   +1 more source

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