Results 101 to 110 of about 5,646,026 (251)

Tilt Angles of Sunspot Groups in Different Latitude Bands and the Amplitude of the Next Solar Cycle

The Astrophysical Journal
In the Babcock–Leighton and Parker dynamo models, the tilt angle of a sunspot group (SG) and the turbulence in the solar convection zone (one widely accepted generation mechanism responsible for the scatter of the tilt angles of SGs around the mean ...
P. X. Gao
doaj   +1 more source

Exploration of the relevancy of nutritional knowledge and self‐perceived nutrition competency of the UK Optometric Workforce

Acta Ophthalmologica, EarlyView.
Abstract Purpose This study investigated the self‐perceived competence, knowledge, confidence and attitudes of the UK optometric workforce with regard to nutritional advice for patients. Methods A validated questionnaire (NUTrition COMPetence) was used to survey the optometric workforce, which was adapted to UK optometric practice and nutritional ...
Duane Mellor, Nicola J. Milhench, Rebekka Heitmar   +2 more
wiley   +1 more source

The rotating motion and pre-flare activity of the sunspot groups associated with the solar proton flare on 7 July 1966 [PDF]

, 1970
Rotating motion of sunspot groups associated with solar proton ...
Sakurai, K.
core  

Solar Observations by Angelo Secchi: An Analysis of His Diary and Annotations in His Sunspot Drawings

The Astrophysical Journal
Angelo Secchi, a pioneer in solar physics, provided an extensive and regular record of sunspot observations spanning the period 1858–1878. This study analyzes the handwritten records by Secchi and collaborators in the form of drawings and an observation ...
V. M. S. Carrasco, I. Ermolli, A. J. P. Aparicio, T. Chatzistergos   +3 more
doaj   +1 more source

Evaluation of spatial distribution of initial marking strategy among inexperienced graders in diabetic retinopathy: A retrospective cross‐sectional analysis

Acta Ophthalmologica, EarlyView.
Abstract Background Manual diabetic retinopathy (DR) grading may prefer certain regions and underestimate others. It is unclear if inexperienced graders' initial marking strategy reflects a specialist's marking pattern. Aims By the virtual ocular learning platform (VIOLA), we evaluated if initial DR‐lesion markings among inexperienced graders spatially
Simon Joel Ellerup Lowater, Andrea Blasi Núñez, Jakob Kristian Holm Andersen, Sebastian Dinesen, Thiusius Rajeeth Savarimuthu, Jakob Grauslund   +5 more
wiley   +1 more source

Analyses of Johannes Kepler’s Sunspot Drawings in 1607: A Revised Scenario for the Solar Cycles in the Early 17th Century

The Astrophysical Journal Letters
Telescopic sunspot observations began in 1610 and captured subsequent solar cycles. In combination with proxy reconstructions on an annual scale, these data sets indicate a gradual transition between regular solar cycles and the Maunder Minimum.
Hisashi Hayakawa, Koji Murata, E. Thomas H. Teague, Sabrina Bechet, Mitsuru Sôma   +4 more
doaj   +1 more source

Comparison between variations in solar UV radiation and sunspot parameters with Mg II daily index as a proxy

Physics Open
Solar UV radiation influence the Earth's climate and upper atmosphere. The UV emission from the Sun modulates with the sunspot cycle with an 11-year periodicity.
(G) Chandrika, Belur Ravindra, Vijay Kumar Doddamani   +2 more
doaj   +1 more source

Concurrent macular neovascularization in shallow irregular retinal pigment epithelium elevation phenotypes in age‐related macular degeneration and chronic central serous chorioretinopathy: A systematic review and meta‐analysis

Acta Ophthalmologica, EarlyView.
Abstract This systematic review and meta‐analysis synthesized the reported frequency of concurrent macular neovascularization (MNV) among selected eyes with author‐defined shallow irregular retinal pigment epithelium (RPE) elevations in age‐related macular degeneration (AMD) and chronic central serous chorioretinopathy (CSC).
Mehmet Cem Sabaner, Irem Gunes, Rodrigo Anguita, Elon H. C. van Dijk, Lorenzo Ferro Desideri, Lasse Jørgensen Cehofski, Prithvi Ramtohul, Yousif Subhi   +7 more
wiley   +1 more source

Harmonizing Sunspot Datasets Consistency: Focusing on SOHO/MDI and SDO/HMI Data

Universe
To ensure the long-term consistency of sunspot group data, it is essential to harmonize measurements from SOHO/MDI and SDO/HMI, two major solar observatories with overlapping coverage.
Barbara Góra-Gálik, Emese Forgács-Dajka, Istvan Ballai   +2 more
doaj   +1 more source

Regional growth kinetics of geographic atrophy in age‐related macular degeneration with and without fovea‐sparing

Acta Ophthalmologica, EarlyView.
Abstract Purpose Fovea‐sparing geographic atrophy (GA) patients retain near‐normal central vision. To better understand GA progression in relation to the fovea, we performed a semi‐automated image analysis of regional atrophy growth in a long‐term GA natural‐history cohort. Methods Prospective‐observational, single‐centre‐study (02/2013–07/2025) at the
Daniel R. Muth, Abinaya P. Venkataraman, Alberto Dominguez‐Vicent, Goran Petrovski, Pete A. Williams, Laurence Quérat, Filippo Locri, Sandrine A. Zweifel, Anders Kvanta   +8 more
wiley   +1 more source