Results 51 to 60 of about 29,054 (216)

Investigation of the rotor–obstacle aerodynamic interaction in hovering flight [PDF]

, 2018
In this paper, a comprehensive experimental survey of the aerodynamic interaction of a hovering rotor in the proximity of a ground obstacle is described, taking advantage of multiple experimental techniques.
Giuni, Michea, Green, Richard B., Zagaglia, Daniele   +2 more
core   +2 more sources

Strategies for Assessing Post‐Wildfire Geomorphic Resilience in Semiarid Rivers

River Research and Applications, EarlyView.
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

Fetal Growth Restriction at a Universal Late Third‐Trimester Scan and Relationship With Adverse Outcome: Retrospective Cohort Study

BJOG: An International Journal of Obstetrics &Gynaecology, EarlyView.
ABSTRACT Objective To examine the contribution of fetal growth restriction ultrasound phenotypes to adverse perinatal outcomes at term. Design Retrospective population‐based cohort study. Setting John Radcliffe Hospital, Oxford, UK where universal ultrasound at 35+1–36+6 weeks is performed. Population Congenital abnormalities and births before the scan
Elena D'Alberti, Chiara Granieri, Christos Ioannou, Christina Y. Aye, Michael Shea, Lawrence Impey   +5 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

[Doppler velocimetry].

Archivio italiano di urologia, andrologia : organo ufficiale [di] Societa italiana di ecografia urologica e nefrologica, 1994
After a brief historical introduction, the Authors describe the methodology of the continuous wave basic and dynamic Doppler examination of the penile arteries as well as the main normal and pathologic patterns. Some special tensiometric tests are reported. Advantages and limits of the afore mentioned examinations are discussed.
S, Annoscia, S, Treffiletti, C, Boccafoschi   +2 more
openaire   +1 more source

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

Doplervelocimetria das artérias oftálmica e central da retina em gestantes normais Dopplervelocimetry of ophthalmic and central retinal arteries in normal pregnancies

Revista Brasileira de Ginecologia e Obstetrícia, 2005
OBJETIVOS: avaliar os padrões dos índices doplervelocimétricos das artérias oftálmica e central da retina durante o segundo e terceiro trimestres da gestação normal e comparar os valores obtidos do olho direito e esquerdo das gestantes.
Angélica Lemos Debs Diniz, Antonio Fernandes Moron, Maria Célia dos Santos, Nelson Sass, Claudio Rodrigues Pires   +4 more
doaj   +1 more source

A Wind Study of Venus’s Cloud Top: New Doppler Velocimetry Observations

Atmosphere, 2020
At Venus’s cloud top, the circulation is dominated by the superroration, where zonal wind speed peaks at ∼100 ms−1, in the low-to-middle latitudes. The constraining of zonal and meridional circulations is essential to understanding the mechanisms driving
Ruben Gonçalves, Pedro Machado, Thomas Widemann, Francisco Brasil, José Ribeiro   +4 more
doaj   +1 more source

Effect of Axial Agitator Configuration (Up-Pumping, Down-Pumping, Reverse Rotation) on Flow Patterns Generated in Stirred Vessels [PDF]

, 2001
Single phase turbulent flow in a tank stirred with two different axial impellers - a pitched blade turbine (PBT) and a Mixel TT (MTT)- has been studied using Laser Doppler Velocimetry. The effect of the agitator configuration, i.e.
C. Xuereb, D.F. Fletcher, Hari-Prajitno, J. Aubin, J. Bertrand, Jaworski, Jaworski, Kaufman, Kuboi, Mavros, Mavros, Mavros, Meyers, Mishra, Nienow, Nienow, Nienow, Nienow, Nienow, Ozcan-Taskin, P. Mavros, Ranade, Tatterson   +22 more
core   +2 more sources

Time-stretched photonic Doppler velocimetry

Optics Express, 2019
Inertial confinement fusion facilities generate implosions at speeds greater than 100 km/s, and measuring the material velocities is important and challenging. We have developed a new velocimetry technique that uses time-stretched spectral interferometry to increase the measurable velocity range normally limited by the detector bandwidth.
J. G. Mance, B. M. La Lone, D. H. Dolan, S. L. Payne, D. L. Ramsey, L. R. Veeser   +5 more
openaire   +2 more sources