Results 31 to 40 of about 3,275,520 (334)

Automated, Depth-Resolved Estimation of the Attenuation Coefficient From Optical Coherence Tomography Data

open access: greenIEEE Transactions on Medical Imaging, 2015
Gennifer T. Smith   +6 more
openalex   +2 more sources

An Optimized Attenuation Compensation and Contrast Enhancement Algorithm Without Pseudocharacteristics in Intravascular OCT Imaging

open access: yesIEEE Photonics Journal, 2016
We present an optimized attenuation compensation and contrast enhancement algorithm to improve the quality of the intravascular optical coherence tomography (IVOCT) images and overcome the drawbacks of the previous algorithms, including ...
Yonghan Zhou   +8 more
doaj   +1 more source

Absorption Parameters for Glucose Solution for Gamma Ray at 59.54 keV

open access: yesARO-The Scientific Journal of Koya University, 2016
Photon absorption parameters for glucose solution at different concentrations such as linear attenuation coefficient, mass attenuation coefficient, effective atomic number, electron density and density determined at 59.54 keV photon energy.
Maan S. Al-Arif, Diyaree O. Kakil
doaj   +1 more source

Effect of Different Bend Pipes on the Propagation Characteristics of Premixed Methane-Air Explosion in Confined Spaces

open access: yesGeofluids, 2021
To explore the effect of different bend pipes on the propagation characteristics of premixed methane-air explosion, the experimental explosion pipe system and numerical model were established.
Jinwei Qiu   +4 more
doaj   +1 more source

Calculated-Experimental Model for Multilayer Shield

open access: yesARO-The Scientific Journal of Koya University, 2016
The effective linear attenuation coefficients and build-up factors for single shield of Al, Fe, Pb, and for multi-layer shield of Al-Pb, Al-Fe, Fe-Pb, Al-Fe-Pb as a function of shield thickness, atomic number, and order of the materials composing the ...
Maan S. Al-Arif, Diyaree O. Kakil
doaj   +1 more source

Tissue characterization with depth-resolved attenuation coefficient and backscatter term in intravascular optical coherence tomography images

open access: yesJournal of Biomedical Optics, 2017
. An important application of intravascular optical coherence tomography (IVOCT) for atherosclerotic tissue analysis is using it to estimate attenuation and backscatter coefficients.
Shengnan Liu   +9 more
semanticscholar   +1 more source

Determination of the Downwelling Diffuse Attenuation Coefficient of Lake Water with the Sentinel-3A OLCI

open access: yesRemote Sensing, 2017
The Ocean and Land Color Imager (OLCI) on the Sentinel-3A satellite, which was launched by the European Space Agency in 2016, is a new-generation water color sensor with a spatial resolution of 300 m and 21 bands in the range of 400–1020 nm.
Ming Shen   +5 more
semanticscholar   +1 more source

attenuation coefficient [PDF]

open access: yes, 2014
Citation: 'attenuation coefficient' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.A00516 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Absorption coefficient estimation of thin MoS2 film using attenuation of silicon substrate Raman signal

open access: yesResults in Physics, 2019
A simple, non-destructive, and convenient method using Raman spectroscopy and Atomic Force Microscopy for extracting the absorption coefficient of MoS2 is presented.
Joon Young Kwak
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

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