Results 171 to 180 of about 22,234 (267)

Multi‐Decadal Trends in the Low Latitude foF2 Driven by Secular Magnetic Variations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Long‐term ionospheric trends have been widely studied, but their origin and magnitude remain subjects of debate. This study quantifies the linear trend in the F2‐region critical frequency (foF2) and its local time dependence using observations from eight low‐latitude ionosonde stations.
D. Singh, S. R. Zhang, L. P. Goncharenko, I. S. Batista, A. J. Coster   +4 more
wiley   +1 more source

Long-term variations in the geomagnetic activity level Part II: Ascending phases of sunspot cycles

Annales Geophysicae
Monthly averages of the Helsinki Ak-values have been reduced to the equivalent aa-indices to extend the aa-data set back to 1844. A periodicity of about five cycles was found for the correlation coefficient (<i>r</i>) between geomagnetic ...
H. Nevanlinna, M. Storini, O. Borello Filisetti, V. Mussino   +3 more
doaj  

Negative trend in total solar irradiance over the satellite era. [PDF]

Proc Natl Acad Sci U S A
Amdur T, Huybers P.
europepmc   +1 more source

Correlation analysis between the occurrence of epidemic in ancient China and solar activity. [PDF]

Sci China Earth Sci, 2023
Chen S, Wei Y, Yue X, Xu K, Li M, Lin W.
europepmc   +1 more source

Decellularized Aged Bruch's Membrane Confers Unique Biochemical Cues to Retinal Pigment Epithelium for In Vitro Modeling of Age‐Related Macular Degeneration

Aging Cell, Volume 25, Issue 5, May 2026.
A Bruchs membrane (BrM) mimic based on aged decellularized BrM was developed and differentially expressed proteins in aged dECM‐BrM that may provide specific biochemical cues fundamental to model AMD in vitro were identified. RPE culture on aged dECM‐BrM developed certain AMD‐like features including reduced TEER and expression of drusen components ...
Blanca Molins, Mercedes Soledad Nabaes Jodar, Eliandre de Oliveira, Josep Maria Estanyol, Esther Peña, Jaione Bezunartea, María Hernández, Marc Figueras‐Roca, Alfredo Adan   +8 more
wiley   +1 more source

Analyzing the cyclical impact of sunspot activity and ENSO on precipitation patterns in Gilan province: a wavelet-based approach. [PDF]

Sci Rep
Molavi-Arabshahi M, Eskandari S.
europepmc   +1 more source

Sunspot numbers in telescopic era

, 2019
Abstract. This is a literature review about the solar cycle and its variations, with a focus on sunspots. We also make a review of the different types of sunspot numbers currently in use and a comparison between their respective advantages and disadvantages, primarily focusing in their extension to the period between 1600 and 1900 AD.Aurinkopilkkujen ...
openaire   +1 more source

Choroidal vascular hyperpermeability patterns in central serous chorioretinopathy correlate with microperimetry: CERTAIN study report 4

Acta Ophthalmologica, Volume 104, Issue 3, Page 288-295, May 2026.
Abstract Purpose This report evaluates the association of three distinct leakage patterns of choroidal vascular hyperpermeability (CVH) on indocyanine green angiography (ICGA), previously correlated with disease chronicity, with retinal sensitivity measured by microperimetry in central serous chorioretinopathy (CSC): unifocal indistinct signs of ...
Jennifer M. Chang‐Wolf, Laurenz J. B. Pauleikhoff, Chabelie Ruiters, Annette C. Moll, Reinier O. Schlingemann, Elon H. C. van Dijk, Roselie M. H. Diederen, Camiel J. F. Boon   +7 more
wiley   +1 more source

Reshaping reservoirs with unsupervised Hebbian adaptation. [PDF]

Nat Commun
Cazalets T, Dambre J.
europepmc   +1 more source

Real‐world outcomes of aflibercept 8 mg in patients previously treated for neovascular age‐related macular degeneration

Acta Ophthalmologica, Volume 104, Issue 3, Page 296-304, May 2026.
Abstract Purpose To evaluate visual, anatomical and safety outcomes of aflibercept 8 mg in previously treated patients with neovascular age‐related macular degeneration (nAMD). Methods This retrospective study included nAMD patients switched to aflibercept 8 mg from prior anti‐VEGF therapies at Sahlgrenska University Hospital between February 2024 and ...
Imadeddin Abu Ishkheidem, Esra Inci, Martin Breimer, Sofia Töyrä Silfverswärd, Madeleine Zetterberg, Marita Andersson Grönlund   +5 more
wiley   +1 more source