Results 1 to 10 of about 398,926 (227)

Modelling of Phase Contrast Imaging with X-ray Wavefront Sensor and Partial Coherence Beams [PDF]

open access: yesSensors, 2020
The Hartmann wavefront sensor is able to measure, separately and in absolute, the real δ and imaginary part β of the X-ray refractive index. While combined with tomographic setup, the Hartman sensor opens many interesting opportunities behind the direct ...
Ginevra Begani Provinciali   +3 more
doaj   +2 more sources

Can Global Economic Policy Uncertainty Drive the Interdependence of Agricultural Commodity Prices? Evidence from Partial Wavelet Coherence Analysis [PDF]

open access: goldComplexity, 2021
This paper employed wavelet coherence and partial wavelet coherence to investigate the time-frequency effect of global economic policy uncertainty on the comovement of five agricultural commodities such as maize, oat, rice, soybean, and wheat using ...
Siaw Frimpong   +5 more
doaj   +2 more sources

Recovery of undamaged electron-density maps in the presence of damage-induced partial coherence in single-particle imaging [PDF]

open access: yesIUCrJ, 2020
Resolving the electronic structure of single biological molecules in their native state was among the primary motivations behind X-ray free-electron lasers. The ultra-short pulses they produce can outrun the atomic motion induced by radiation damage, but
Alexander Kozlov   +5 more
doaj   +2 more sources

Coherence and Partial Coherence in Interacting Electron Systems [PDF]

open access: yesPhysical Review Letters, 2001
Physical Review ...
König, Jürgen, Gefen, Yuval
openaire   +4 more sources

Comparison of two novel swept-source optical coherence tomography devices to a partial coherence interferometry-based biometer [PDF]

open access: yesScientific Reports, 2021
To evaluate the repeatability and agreement of corneal and biometry measurements obtained with two swept-source optical coherence tomography (SSOCT) and a partial coherence interferometry-based device. This is a cross-sectional study. Forty-eight eyes of
Tommy C. Y. Chan   +5 more
doaj   +2 more sources

Comparison between spectral-domain optical coherence tomography-based and partial coherence interferometry-based biometry [PDF]

open access: yesScientific Reports
We compared axial length (AL) measurements using spectral-domain optical coherence tomography (SD-OCT)-based and partial coherence interferometry (PCI)-based biometry in eyes with various chorioretinal diseases.
So Min Ahn   +3 more
doaj   +2 more sources

Beam Wandering in the Atmosphere: The Effect of Partial Coherence [PDF]

open access: green, 2007
The effect of a random phase screen on laser beam wander in a turbulent atmosphere is studied theoretically. The method of photon distribution function is used to describe the photon kinetics of both weak and strong turbulence.
A. A. Chumak   +5 more
core   +3 more sources

Effects of partial coherence on frequency combs [PDF]

open access: goldJournal of the European Optical Society-Rapid Publications, 2007
We give an analytical model to study the deviations from an ideal frequency comb when the effects of random variations, from pulse to pulse, in the amplitude, phase, shape, chirp, and timing jitter are simultaneously taken into account.
Torres–Company Víctor   +2 more
doaj   +3 more sources

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