Results 41 to 50 of about 712,797 (209)

Aspirin delays preterm birth in pregnancies at high risk for preterm pre‐eclampsia: evidence from randomized clinical trial in Asia

open access: yesUltrasound in Obstetrics &Gynecology, Volume 66, Issue 1, Page 24-32, July 2025.
ABSTRACT Objectives To investigate the impact of aspirin administration on the incidence of preterm birth, according to the type of delivery and gestational age at preterm birth, and to examine the hypothesis that aspirin delays preterm delivery. Methods This was a secondary analysis of a multicenter stepped‐wedge cluster randomized trial of a first ...
H. H. Y. Leung   +29 more
wiley   +1 more source

Using neural networks to estimate wave and wind parameters from an HF radar [PDF]

open access: yes, 2010
High-frequency (HF) radar systems are used to provide measurements of waves, winds and currents from the sea. By the Doppler Effect the radars interpret the backscattered signal from the sea surface.
Sawaqed Herrero, Víctor
core   +2 more sources

Placental biomarker and fetoplacental Doppler abnormalities are strongly associated with placental pathology in pregnancies with small‐for‐gestational‐age fetus: prospective study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 6, Page 749-760, June 2025.
ABSTRACT Objective Placental dysfunction can result in small‐for‐gestational age (SGA) or fetal growth restriction (FGR). The aim of this prospective cohort study was to assess the association of the cerebroplacental ratio (CPR) and other more conventional fetoplacental Doppler indices, circulating placental growth factor (PlGF) levels and soluble fms ...
J. Hong   +6 more
wiley   +1 more source

N‐terminal pro B‐type natriuretic peptide as biomarker to predict pre‐eclampsia and maternal–fetal complications

open access: yesUltrasound in Obstetrics &Gynecology, Volume 65, Issue 4, Page 447-455, April 2025.
ABSTRACT Objective A soluble fms‐like tyrosine kinase‐1 (sFlt‐1)‐to‐placental growth factor (PlGF) ratio cut‐off of 38 is currently considered optimal for ruling out pre‐eclampsia (PE); however, implementation of this ratio in clinical practice is limited.
M. N. Nan   +15 more
wiley   +1 more source

Diagnostic accuracy of prenatal ultrasound in coarctation of aorta: systematic review and individual participant data meta‐analysis

open access: yesUltrasound in Obstetrics &Gynecology, Volume 63, Issue 4, Page 446-456, April 2024.
ABSTRACT Objective To determine the diagnostic accuracy of prenatal ultrasound in detecting coarctation of the aorta (CoA). Methods An individual participant data meta‐analysis was performed to report on the strength of association and diagnostic accuracy of different ultrasound signs in detecting CoA prenatally.
C. Villalaín   +20 more
wiley   +1 more source

La enseñanza de la física a través de módulos experimentales

open access: yesGóndola, Enseñanza y Aprendizaje de las Ciencias, 2012
Esta propuesta de enseñanza y aprendizaje de la Física fue desarrollada en dos instituciones educativas privadas de la ciudad de Bogotá, Colombia, con estudiantes de noveno, décimo e undécimo grado, con edades entre los  13 y 18 años.
Ronald Avendaño   +3 more
doaj   +1 more source

Aplicaciones del láser Doppler en odontología [PDF]

open access: yes, 2016
El flujómetro de láser Doppler es un método no invasivo que proporciona una medida continua del registro del flujo sanguíneo a nivel microvascular. Un haz de luz láser incidente en cualquier tejido humano, es dispersado tanto en las estructuras estáticas
Berini Aytés, Leonardo   +3 more
core  

Diagnostic yield of exome sequencing in prenatal agenesis of corpus callosum: systematic review and meta‐analysis

open access: yesUltrasound in Obstetrics &Gynecology, Volume 63, Issue 3, Page 312-320, March 2024.
ABSTRACT Objectives To determine the incremental diagnostic yield of exome sequencing (ES) after negative chromosomal microarray analysis (CMA) in cases of prenatally diagnosed agenesis of the corpus callosum (ACC) and to identify the associated genes and variants.
H. J. Mustafa   +8 more
wiley   +1 more source

Remote sensing mediante LIDAR en la UPC [PDF]

open access: yes, 2003
Peer ...
Agishev, Ravil R.   +7 more
core   +5 more sources

Propuesta de un trabajo práctico de laboratorio sobre corrimiento Doppler óptico en el aula universitaria

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2017
Los trabajos prácticos de laboratorio sobre efecto Doppler óptico no son una tarea sencilla, tanto en el diseño como en su realización para fines didácticos.
Esteban Guillermo Szigety   +2 more
doaj  

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