Results 51 to 60 of about 41,999 (282)

Serum VEGF levels in infants at risk for developing retinopathy of prematurity

open access: yesJournal of Ophthalmology, 2019
Background: Because excessive growth of abnormal retinal vessels in the developing eye of the premature infant underlies retinopathy of prematurity (ROP), it may be hypothesized that a change in vascular endothelial growth factor (VEGF) level in the ...
S.V. Katsan, S.G. Fedotova
doaj   +1 more source

High-Temperature Alkali Vapor Cells with Anti-Relaxation Surface Coatings

open access: yes, 2009
Antirelaxation surface coatings allow long spin relaxation times in alkali-metal cells without buffer gas, enabling faster diffusion of the alkali atoms throughout the cell and giving larger signals due to narrower optical linewidths.
Corney A., M. V. Romalis, S. J. Seltzer
core   +1 more source

Inhaled nitric oxide as an adjunct to neonatal resuscitation in premature infants: a pilot, double blind, randomized controlled trial. [PDF]

open access: yes, 2020
BackgroundNitric oxide (NO) plays an important role in normal postnatal transition. Our aims were to determine whether adding inhaled NO (iNO) decreases supplemental oxygen exposure in preterm infants requiring positive pressure ventilation (PPV) during ...
Anderson, Michael   +10 more
core  

Attenuation of the Ganglion Cell Layer in a Premature Infant Revealed with Handheld Spectral Domain Optical Coherence Tomography [PDF]

open access: yes, 2016
Purpose: To report on subclinical retinal abnormalities shown through handheld spectral domain optical coherence tomography on a premature infant. Methods: Case report.
Carroll, Joseph   +3 more
core   +2 more sources

Nigra‐Subthalamic Dopaminergic Circuitry Modulates and Represents Distinct Pain Modality in Physiological and Pain States in Mice

open access: yesAdvanced Science, EarlyView.
Nigral dopaminergic (DA) neurons modulate and represent pain with a preference to a particular modality (mechanical) and laterality (contralateral), which are controlled by nigral GABAergic neurons. The pain modulation is mimicked by the nigro‐subthalamic projection and its downstream neurons, involving D2‐like receptors.
Ying Ji   +13 more
wiley   +1 more source

Ecological Adaptation Mechanisms Underlying Successful Plant Reproduction

open access: yesAdvanced Science, EarlyView.
During floral induction, various environmental and endogenous signals converge to regulate the florigen protein, which is transported from leaves to the SAM to initiate flowering. Within the SAM, a complex network of receptor kinases and small peptides orchestrates floral development with high spatiotemporal precision.
Hang Zhao   +8 more
wiley   +1 more source

An assessment of warm fog: Nucleation, control, and recommended research [PDF]

open access: yes, 1974
A state-of-the-art survey is given of warm fog research which has been performed up to, and including, 1974. Topics covered are nucleation, growth, coalescence, fog structures and visibility, effects of surface films, drop size spectrum, optical ...
Connell, J. R.   +2 more
core   +1 more source

Development of an inexpensive rollover energy dissipation device to improve safety provided by ROPS

open access: yesBiosystems Engineering, 2019
Tractor overturn is the most common cause fatal accidents in agriculture. Installing rollover protective structures (ROPS), in combination with the use of a safety seat belt, is the best way to avoid fatalities. A ROPS must be able to absorb the rollover energy without collapsing or suffering such a deformation that infringes the safety zone, where the
Juan-Ignacio Latorre-Biel   +3 more
openaire   +3 more sources

Retinal Vessel Segmentation: A Comprehensive Review From Classical Methods to Deep Learning Advances (1982–2025)

open access: yesAdvanced Intelligent Systems, EarlyView.
Four decades of retinal vessel segmentation research (1982–2025) are synthesized, spanning classical image processing, machine learning, and deep learning paradigms. A meta‐analysis of 428 studies establishes a unified taxonomy and highlights performance trends, generalization capabilities, and clinical relevance.
Avinash Bansal   +6 more
wiley   +1 more source

“Oxygen with Love” and Diode Laser Treatment Decreases Comorbidity and Avoidable Blindness due to Retinopathy of Prematurity: Results Achieved in the Past 12 Years

open access: yesPediatrics and Neonatology, 2013
To determine whether the “Oxygen with Love” (OWL) and diode laser treatment provided in a neonatal intensive care unit has reduced the risk of avoidable blindness caused by retinopathy of prematurity (ROP) over the past decade.
Jose Luis Garcia-Serrano   +6 more
doaj   +1 more source

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