Results 1 to 10 of about 1,532,382 (286)

Shear Wave Dispersion Slope Measured with Shear Wave Dispersion Imaging Is Associated with Variceal Hemorrhage in Cirrhotic Patients [PDF]

open access: yesDiagnostics, 2022
Background and Objectives: Portal hypertension (PH), as the main consequence of cirrhosis, leads to the development of gastroesophageal varices (GEVs). Variceal hemorrhage (VH) caused by the rupture of GEVs is a life-threatening emergency.
Xiaohui Sun   +4 more
doaj   +2 more sources

Impact of shear wave dispersion slope analysis for assessing the severity of myocarditis [PDF]

open access: yesScientific Reports, 2022
This study aimed to elucidate the utility of a novel ultrasound-based technique, shear wave dispersion slope (SWDS) analysis, which estimates tissue viscosity, for evaluating the severity of myocardial inflammation.
Naofumi Amioka   +13 more
doaj   +2 more sources

INFLUENCE OF CHROMATIC DISPERSION, DISPERSION SLOPE, DISPERSION CURVATURE ON MICROWAVE GENERATION USING TWO CASCADE MODULATORS [PDF]

open access: yesICTACT Journal on Communication Technology, 2013
This work presents a theoretical study of harmonic generation of microwave signals after detection of a modulated optical carrier in cascaded two electro-optic modulators.
Mandeep Singh, S.K. Raghuwanshi
doaj   +2 more sources

Material dispersion slope in optical-fibre waveguides

open access: yesElectronics Letters, 1982
The slope of the material dispersion dM/dλ at λ0, the material dispersion zero where d2n/dλ2=0, can be calculated to yield values applicable to crystals and glasses. The results, in units of ps/nm km μm, range from 217 for B2O3 and 105 for SiO2 to 9 for TI2O and 0.40 for TlI.
K. Nassau, S.H. Wemple
openaire   +2 more sources

Clinical utilization of shear wave dispersion imaging in diffuse liver disease [PDF]

open access: yesUltrasonography, 2020
Shear wave (SW) dispersion imaging is a newly developed imaging technology for assessing the dispersion slope of SWs, which is related to tissue viscosity in diffuse liver disease. Our preclinical and preliminary clinical studies have shown that SW speed
Katsutoshi Sugimoto   +6 more
doaj   +1 more source

Clinical applications of shear wave dispersion imaging for breast lesions: a pictorial essay [PDF]

open access: yesUltrasonography, 2023
Shear wave dispersion (SWD) imaging is a newly developed ultrasound technology designed to evaluate the dispersion slope of shear waves, which is related to tissue viscosity.
Min Sun Bae   +3 more
doaj   +1 more source

A Weakly-Coupled Few-Mode Hybrid Clad Photonic Crystal Fiber With Ultra-Flattened Dispersion and Low Confinement Loss

open access: yesIEEE Photonics Journal, 2022
We propose a weakly-coupled ultra-flattened chromatic dispersion few-mode photonic crystal fiber (FM-PCF) supporting 10 vector modes (HE11a, HE11b, TM01, HE21a, HE21b, TE01, HE31a, HE31b, EH11a, EH11b) which works over a large range of wavelength across ...
Xiao Lei   +5 more
doaj   +1 more source

Effects of slope and speed of escalator on the dispersion of cough-generated droplets from a passenger

open access: yesThe Physics of Fluids, 2021
During the pandemic of COVID-19, the public is encouraged to take stairs or escalators instead of elevators. However, the dispersion of respiratory droplets in these places, featured by slopes and human motion, is not well understood yet.
Zhaobin Li   +5 more
semanticscholar   +1 more source

Efficacy of shear wave elastography for assessment of liver function in patients with heart failure

open access: yesESC Heart Failure, 2021
Aims Liver dysfunction is important for prognosis in heart failure (HF). Shear wave elastography (SWE), which is a novel ultrasound technique for charactering tissues, has been used in liver diseases.
Rie Nakayama   +4 more
doaj   +1 more source

Engineering the high-frequency components of coherent supercontinuum generation in hybrid optical fibers with yttrium aluminum garnet core

open access: yesResults in Physics, 2022
Coherent supercontinuum (SC) generation in optical fibers has spurred extensive research interest and found many applications. Here, we report a hybrid optical crystal fiber with an yttrium aluminum garnet (YAG) core.
Chunlei Huang   +12 more
doaj   +1 more source

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