Results 1 to 10 of about 29,015 (177)

Imperatives of mathematical model of arterial blood dynamics for interpretation of doppler velocimetry: A narrative review [PDF]

open access: yesJournal of Medical Ultrasound, 2023
Clinicians frequently study arterial Doppler velocimetric waveforms depicted by Doppler sonography of the kidneys, the heart, the brain, and the feto-maternal circulation to assess the well-being of the aforementioned vital organs.
Umar Abubakar   +8 more
doaj   +2 more sources

Usefulness of uterine artery Doppler velocimetry as a predictor for hypertensive disorders in pregnancy in women with prehypertension before 20 weeks gestation. [PDF]

open access: yesPLoS ONE, 2019
Hypertensive disorders of pregnancy (HDP) is major complication of maternal-fetal outcomes in obstetric field. Although HDP is mainly defined by high blood pressure, the information about the relationship between prehypertension (preHTN, 120-139mmHg and ...
Seung Woo Yang   +6 more
doaj   +2 more sources

Are Uterine and Ovarian Artery Doppler Velocimetry Values Good Pregnancy Predictors in Clomiphene Citrate Cycles? [PDF]

open access: yesInternational Journal of Fertility and Sterility, 2015
Background We conducted this prospective study to evaluate the prognostic significance of uterine and ovarian artery Doppler velocimetry in clomiphene citrate (CC) cycles.
Ali Irfan Guzel   +5 more
doaj   +2 more sources

Compact and reciprocal probe-signal-integrated rotational Doppler velocimetry with fiber-sculpted light [PDF]

open access: yesLight: Science & Applications
In recent years, with the clarification of the mechanism of the rotational Doppler effect (RDE), there has attracted extensive attention to its development of applications, especially in the detection of the angular velocity of rotating objects.
Zhenyu Wan   +4 more
doaj   +2 more sources

Time Lens Photon Doppler Velocimetry (TL-PDV) for extreme measurements [PDF]

open access: yesNature Communications
Capturing extreme surface velocities with  >50 km/s dynamic range, which arise in shock physics such as inertial confinement fusion (ICF), is beyond the reach of conventional photon Doppler velocimetry (PDV) systems due to the need for extremely large ...
Velat Kilic   +6 more
doaj   +2 more sources

Quantum lock-in force sensing using optical clock Doppler velocimetry [PDF]

open access: yesNature Communications, 2017
Existing force sensors are designed for driving frequencies above tens of kHz due to heating and sensitivity loss. Here the authors demonstrate precise force metrology for below kHz frequency range by combining the Doppler-shifted optical transition in ...
Ravid Shaniv, Roee Ozeri
doaj   +2 more sources

Role of second trimester uterine artery doppler in early prediction of preeclampsia and intrauterine growth restriction among high-risk Bahamian residents [PDF]

open access: yesSAGE Open Medicine
Background: Uterine artery doppler velocimetry has proven to be efficient in the prediction of preeclampsia and intrauterine growth restriction. We aimed to determine its value among high-risk Bahamian women and the most predictive parameter. Methods: We
Azaria Clare, Vrunda Sakharkar
doaj   +2 more sources

Multi-Frequency Doppler Velocimetry Based on a Mode-Locked Distributed Bragg Reflector Laser

open access: yesPhotonics, 2023
A differential multi-frequency laser Doppler velocimetry is demonstrated, utilizing the synchronized multimode of a mode-locked distributed Bragg reflector laser.
Hao Song   +5 more
doaj   +1 more source

Accuracy Analysis of Spectral Velocimetry for the Solar Doppler Difference Navigation

open access: yesIEEE Access, 2021
The accuracy of spectral velocimetry is an important performance index for the solar Doppler difference navigation. In order to analyze the influence of spectral variation on the accuracy of velocity measurement, we establish a velocimetry model based on
Shuying Huang   +3 more
doaj   +1 more source

Jupiter’s Atmosphere Dynamics Based on High-Resolution Spectroscopy with VLT/ESPRESSO

open access: yesUniverse, 2023
We present a new study of Jupiter’s atmosphere dynamics using for the first time the extremely high-resolution capabilities of VLT/ESPRESSO to retrieve wind velocities in Jupiter’s troposphere, with a dedicated ground-based Doppler velocimetry method ...
Pedro Machado   +5 more
doaj   +1 more source

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