Results 41 to 50 of about 10,642 (230)

Validation of a Particle Image Velocimetry Algorithm Through Comparative Field and Laboratory Analysis

River Research and Applications, EarlyView.
ABSTRACT Flow velocity measurement is fundamental to hydrological and hydraulic studies, providing essential data for streamflow estimation and river dynamics analysis. Traditional in situ methods like propeller gauges and acoustic Doppler current profilers are accurate but intrusive and labour‐intensive, while non‐intrusive image processing methods ...
Ghazaleh Nassaji Matin, Gareth Bradbury, Alan Puttock, Kirsty Frith, Diego Panici   +4 more
wiley   +1 more source

Upconversion Photonic Doppler Velocimetry Based on Stimulated Brillouin Scattering

Photonics
Optical up-conversion photonic Doppler velocimetry (PDV) based on stimulated Brillouin Scattering (SBS) with an all-fiber link structure is proposed in this article. Because SBS limits the laser power transmitted by a fiber over long distances, the probe
Long Chen, Cangli Liu, Heli Ma, Longhuang Tang, Xing Jia, Tianjiong Tao, Shenggang Liu, Yongchao Chen, Xiang Wang, Jian Wu, Chengjun Li, Jidong Weng   +11 more
doaj   +1 more source

Left and right myocardial performance indices in growth‐restricted fetuses: systematic review and meta‐analysis

Ultrasound in Obstetrics &Gynecology, EarlyView.
ABSTRACT Objectives To evaluate alterations in fetal cardiac function in pregnancies complicated by fetal growth restriction (FGR) by synthesizing evidence on myocardial performance index (MPI) and its constituent parameters for both the left and right ventricles.
A. Sirico, I. Mappa, G. M. Maruotti, L. Cobellis, G. Rizzo   +4 more
wiley   +1 more source

Investigation into the selection of viewing configurations for three-component planar Doppler velocimetry measurements. [PDF]

, 2007
A method for the calculation of three orthogonal velocity components in planar Doppler velocimetry (PDV) using four or more measured velocity components (to the three typically used) is presented.
Nobes, David S., Charrett, Thomas O. H., Tatam, Ralph P.   +2 more
core  

Fetal Doppler velocimetry at high altitude [PDF]

Ultrasound in Obstetrics & Gynecology, 2001
AbstractObjectivesTo determine impedance and velocity characteristics of the fetal circulation using Doppler ultrasound, at extremely high altitude (4300 m) in the Peruvian Andes compared to an ethnically similar population at sea level.MethodsThis was a cross‐sectional study of 196 women resident at high altitude (Cerro de Pasco, 4300 m above sea ...
E, Krampl, C, Lees, J M, Bland, J, Espinoza Dorado, G, Moscoso, S, Campbell   +5 more
openaire   +2 more sources

The Performance of Selective Screening Ultrasound to Detect the Small‐for‐Gestational‐Age Foetus: A Prospective Cohort Study Nested Within the DESiGN Randomised Control Trial

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Objective Evidence on the performance of foetal growth ultrasound parameters to detect the Small‐for‐Gestational‐Age (SGA) foetus for a selective cohort is limited. We report the performance of estimated foetal weight under the 10th percentile (EFW < 10th) at the last selective screening ultrasound to detect SGA based on gestational age of ...
Charles Arcus, James Elhindi, Chivon Winsloe, Andrew Copas, Sophie Relph, Annette Briley, Kirstie Coxon, Mark Johnson, Asma Khalil, Deborah A. Lawlor, Christoph Lees, Neil Marlow, Louise Page, Andrew Shennan, Jane Sandall, Tanya Nippita, Matias C. Vieira, Dharmintra Pasupathy   +17 more
wiley   +1 more source

Home telemonitoring in high‐risk pregnancies: A Finnish retrospective cohort study

Acta Obstetricia et Gynecologica Scandinavica, EarlyView.
This retrospective study suggests that home telemonitoring may provide an acceptable approach for managing selected high‐risk pregnancies. Safe and effective implementation requires careful patient selection and adherence to evidence‐based clinical protocols.
Tiina Stark, Heidi Kruit, Leena Rahkonen
wiley   +1 more source

Brain sparing in fetal growth restriction: The double‐edged sword of fetal hypoxaemia

The Journal of Physiology, EarlyView.
Abstract figure legend The double‐edged sword of brain sparing. Fetal hypoxaemia triggers a coordinated adaptive response characterised by redistribution of cardiac output toward essential organs, including the brain, and a reduction in overall metabolic activity to preserve oxygen supply.
Beth J. Allison, Tegan A. White, Emily J. Camm, Suzanne L. Miller   +3 more
wiley   +1 more source

Dopplervelocimetria no Rastreamento de Aneuploidias no Primeiro Trimestre da Gestação Doppler Velocimetry in Screening of Aneuploidy in the First Trimester of Gestation

Revista Brasileira de Ginecologia e Obstetrícia, 2001
Objetivo: estudar o valor da dopplervelocimetria do duto venoso, da artéria e da veia umbilical no rastreamento de anomalias cromossômicas entre a 10ª e a 14ª semana de gestação. Pacientes e Métodos: foram estudados 314 fetos consecutivamente.
Carlos Geraldo Viana Murta, Antônio Fernandes Moron, Márcio Augusto Pinto de Ávila   +2 more
doaj   +1 more source

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, Volume 42, Issue 6, Page 1115-1141, July 2026.
ABSTRACT We review and summarize diverse components of a catchment that can be monitored after wildfire to assess the geomorphic resilience of the river corridor in semiarid regions. We distinguish upland portions of river catchments from river corridors.
Ellen Wohl, Shayla Triantafillou, Alex Thornton‐Dunwoody, Connor Mertz, Katie Larkin, William Keenan, Steven Griffin, Dylan Davis, Lindsey Blehm   +8 more
wiley   +1 more source