Results 111 to 120 of about 28,762 (292)
The effect of rhegmatogenous retinal detachment on retinal oxygenation
Acta Ophthalmologica, EarlyView.Abstract Purpose Little is known about the effects of retinal detachment on oxygen extraction from retinal vessels. The role of oxygen supply from the retinal vessels in a detached area has not previously been investigated in vivo in humans. Retinal oximetry is a non‐invasive measurement of retinal oxygen saturation.
Anne‐Sofie Petri +8 more
wiley +1 more source
Sunspots and monetary policy [PDF]
, 2006 A monetary economy subject to expectational sunspots is prone to instability, in the sense of multiple rational expectations equilibria. We show how to modify the policy rule to guarantee stability in the presence of expectational sunspots. The policy-
Corrado, L, Chadha, J
core +3 more sources
DISTRIBUTION OF ELECTRIC CURRENTS IN SUNSPOTS FROM PHOTOSPHERE TO CORONA
, 2014 We present a study of two regular sunspots that exhibit nearly uniform twist from the photosphere to the corona. We derive the twist parameter in the corona and in the chromosphere by minimizing the difference between the extrapolated linear force-free ...
S. Gosain +2 more
semanticscholar +1 more source
Indeterminancy and Sunspots with Constant Returns [PDF]
We show that indeterminacy can easily arise in multi-sector models that have constant variable returns to scale and very small market imperfections. This is in sharp contrast to models that require increasing returns to generate indeterminacy, and which ...
Benhabib, Jess, Nishimura, Kazuo
core
Radial outer retina reflectivity (RORR) sign in LAMP2‐associated retinopathy
Acta Ophthalmologica, EarlyView.Abstract Purpose To describe the radial outer retina reflectivity (RORR) sign in patients carrying pathogenic variants in the X‐linked lysosome‐associated membrane protein‐2 (LAMP2) gene and to review the histologic characteristics of LAMP2 expression in the human retina.
Rachael C. Heath Jeffery +17 more
wiley +1 more source
The Astronomical JournalThe relative sunspot number is one of the major parameters for the study of long-term solar activity. The automatic calculation of the relative sunspot number is more stable and accurate as compared to manual methods.
Cui Zhao +6 more
doaj +1 more source
The Hearth of the World: The Sun before Astrophysics
UniverseThis paper presents a historical overview of conceptions about the Sun in Western astronomical and cosmological traditions before the advent of spectroscopy and astrophysics. Rather than studying general cultural ideas, we focus on the concepts developed
Gábor Kutrovátz
doaj +1 more source
Retinal dystrophies simulating geographic atrophy: A diagnostic challenge
Acta Ophthalmologica, EarlyView.Abstract Geographic atrophy (GA) is the chronic loss of retinal pigment epithelium, photoreceptors and choriocapillaris, marking the dry late stage of age‐related macular degeneration (AMD). GA prevalence is expected to rise in the upcoming decades. Advanced GA leads to central scotomas, reducing visual acuity and quality of life, potentially resulting
Johanna M. Colijn +3 more
wiley +1 more source
Meridional motions of sunspots and sunspot groups
The Astrophysical Journal, 1986 Etude des positions des taches solaires et des groupes de taches determinees au Mont Wilson en lumiere blanche entre 1917 et 1983, afin d'examiner la nature des mouvements meridiens des taches et groupes durant cet ...
R. Howard, P. A. Gilman
openaire +1 more source
Do Sunspots Matter under Complete Ignorance? [PDF]
, 2006 In a two-period, sunspot, pure-exchange economy we analyze the case in which agents do not assign subjective probabilistic beliefs to the "sunspot activity". Two generations, each of which is made up of identical agents, populate this economy.
Giordani, P.E. +5 more
core +2 more sources