Results 101 to 110 of about 21,184 (273)
HEMISPHERIC SUNSPOT UNIT AREA: COMPARISON WITH HEMISPHERIC SUNSPOT NUMBER AND SUNSPOT AREA
The Astronomical Journal, 2014 The monthly mean northern and southern hemispheric sunspot numbers (SNs) and sunspot areas (SAs) in the time interval of 1945 January to 2012 December are utilized to construct the monthly northern and southern hemispheric sunspot unit areas (SUAs), which are defined as the ratio of hemispheric SA to SN.
K. J. Li +3 more
openaire +1 more source
Acta Ophthalmologica, EarlyView.Abstract Purpose Managing ocular diseases often requires frequent eye drop administration, which can challenge patient compliance. A long‐acting eye drop technology using an amorphous synthetic silica composite was developed to address this. Our study aimed to assess the safety and tolerability of the Silica Eye Drop platform in healthy volunteers over
Aleksandra Poluianova +5 more
wiley +1 more source
Lifetime of Long-Lived Sunspot Groups
UniverseStudies of active region (AR) lifetimes are mostly restricted to short-lived ARs. The aim of this paper is to include recurrent ARs, which should be identified unambiguously.
Judit Muraközy
doaj +1 more source
Surface magnetic field effects in local helioseismology
, 2007 Using helioseismic holography strong evidence is presented that the phase (or equivalent travel-time) of helioseismic signatures in Dopplergrams within sunspots depend upon the line-of-sight angle in the plane containing the magnetic field and vertical ...
Braun +16 more
core +1 more source
Acta Ophthalmologica, EarlyView.Abstract Conventional optical coherence tomography (OCT) has a floor effect in patients with severe visual field loss, such as seen in advanced primary open‐angle glaucoma (POAG). OCT angiography (OCTA) does not suffer from such a floor effect. However, which OCTA parameters are most useful for monitoring longitudinal progression is unclear.
Kamya Katarya +5 more
wiley +1 more source
Acta Ophthalmologica, EarlyView.Abstract Purpose To compare preoperative characteristics and postoperative anatomical and functional outcomes of scleral buckle surgery using sponges versus tires, as well as explant‐related complications and the frequency of explant removal. Methods This retrospective study included patients with primary rhegmatogenous retinal detachment (RRD) who ...
Peter Kiraly +11 more
wiley +1 more source
Technique for Automated Recognition of Sunspots on Full-Disk Solar Images
EURASIP Journal on Advances in Signal Processing, 2005 A new robust technique is presented for automated identification of sunspots on full-disk white-light (WL) solar images obtained from SOHO/MDI instrument and Ca II K1 line images from the Meudon Observatory.
Zharkov S +3 more
doaj +1 more source
Subsurface Flows in and Around Active Regions with Rotating and Non-rotating Sunspots
, 2012 The temporal variation of the horizontal velocity in subsurface layers beneath three different types of active regions is studied using the technique of ring diagrams.
B.W. Hindman +36 more
core +1 more source
Acta Ophthalmologica, EarlyView.Abstract Purpose To investigate changes in choroidal and retinal thickness before and during myopia control treatment with orthokeratology lenses (OKL) in myopic children. Methods This was a sub‐study of CONTROL and CONTROL2 studies. The present study was a 2‐year, prospective, single‐group interventional study consisting of a 6‐month pre‐treatment ...
P. O. Hansen, F. Møller, T. M. Jakobsen
wiley +1 more source
Solar Activity Spikes: A Comparative Analysis of Monthly Smoothed and Unsmoothed Sunspot Numbers
UniverseThis work investigates the differences between the monthly and 13-month smoothed sunspot numbers since 1749, using data from sunspot number (version 2).
Víctor M. S. Carrasco +4 more
doaj +1 more source