Results 11 to 20 of about 120,222 (297)

In vivo confocal microscopic images of atypical amiodarone-induced keratopathy in patient with epithelial basement membrane dystrophy

open access: yesAmerican Journal of Ophthalmology Case Reports, 2021
A 73-year-old man presented with bilateral corneal opacities. Slit-lamp biomicroscopy showed vortex and oval-shaped opacities. In vivo confocal microscopy (IVCM) showed findings characteristic of amiodarone-induced keratopathy along with epithelial ...
Hidenori Inoue   +3 more
doaj   +1 more source

The Most Valuable Predictive Factors for Bronchopulmonary Dysplasia in Very Preterm Infants

open access: yesChildren, 2023
Introduction: It is urgent to make a rapid screening of infants at the highest risk for bronchopulmonary dysplasia (BPD) via some succinct postnatal biomarkers, such as Ureaplasma Urealyticum (UU) infection and chest radiograph images.
Wenwen Chen   +3 more
doaj   +1 more source

Opacity Effects on Pulsations of Main-Sequence A-Type Stars

open access: yesAtoms, 2018
Opacity enhancements for stellar interior conditions have been explored to explain observed pulsation frequencies and to extend the pulsation instability region for B-type main-sequence variable stars.
Joyce A. Guzik   +2 more
doaj   +1 more source

The Opacity of Backbones

open access: yesProceedings of the AAAI Conference on Artificial Intelligence, 2017
A backbone of a boolean formula F is a collection S of its variables for which there is a unique partial assignment aS such that F[aS] is satisfiable (Monasson et al. 1999; Williams, Gomes, and Selman 2003).  This paper studies the nontransparency of backbones.
Lane A. Hemaspaandra, David E. Narváez
openaire   +3 more sources

The Metaphysics of Opacity

open access: yesPhilosophers' Imprint, 2023
This paper examines the logical and metaphysical consequences of denying Leibniz's Law, the principle that if t1= t2, then φ(t1) if and only if φ(t2). Recently, Caie, Goodman, and Lederman (2020) and Bacon and Russell (2019) have proposed sophisticated logical systems permitting violations of Leibniz's Law.
Diehl, C.E., Mount, B.M.
openaire   +2 more sources

Opacities and spectra of hydrogen atmospheres of moderately magnetized neutron stars [PDF]

open access: yes, 2014
There is observational evidence that central compact objects (CCOs) in supernova remnants have moderately strong magnetic fields $B\sim10^{11}$ G. Meanwhile, available models of partially ionized hydrogen atmospheres of neutron stars with strong magnetic
Chabrier, G.   +2 more
core   +1 more source

Atomic opacities [PDF]

open access: yesInternational Astronomical Union Colloquium, 1994
Let Iv(r, θ) be the intensity of radiation of frequency v, at a distance r from the centre of a star and in a direction making an angle θ to the outward normal. In a plane-parallel approximation the equation of radiative transfer is where 𝛋v is the opacity and jv the emissivity. The net outward flux of radiant energy is
openaire   +1 more source

The discrepancy between solar abundances and helioseismology [PDF]

open access: yes, 2005
There have been recent downward revisions of the solar photospheric abundances of Oxygen and other heavy elements. These revised abundances along with OPAL opacities are not consistent with seismic constraints.
Antia H. M.   +5 more
core   +2 more sources

Characteristics of the pulmonary opacities on chest CT associated with difficulty in short-term liberation from veno-venous ECMO in patients with severe ARDS

open access: yesRespiratory Research, 2023
Background It is clinically important to predict difficulty in short-term liberation from veno-venous extracorporeal membrane oxygenation (V-V ECMO) in patients with severe acute respiratory distress syndrome (ARDS) at the time of initiation of the ...
Mitsuaki Nishikimi   +12 more
doaj   +1 more source

Ipopv2: Photoionization of Ni XIV -- a test case [PDF]

open access: yes, 2013
Several years ago, M. Asplund and coauthors (2004) proposed a revision of the Solar composition. The use of this new prescription for Solar abundances in standard stellar models generated a strong disagreement between the predictions and the observations
Delahaye, F.   +3 more
core   +1 more source

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