Results 81 to 90 of about 1,877,814 (242)

Bilateral simultaneous cataract surgery and intraocular lens implantation in an adult female chimpanzee (Pan troglodytes) inducing monovision

Veterinary Ophthalmology, Volume 28, Issue 2, Page 457-464, March 2025.
Abstract Background Cataract is the major cause of visual impairment in humans. Phacoemulsification with intraocular lens (IOL) implantation is the standard technique for cataract treatment with a high success rate. In a few cases, the surgical cataract procedure and lens implantation have been applied in non‐human primates.
F. Notting, Y. Cheng, M. Marinkovic, H. van Bolhuis, I. Notting   +4 more
wiley   +1 more source

Evidence for Solar Modulation on the Millennial-Scale Climate Change of Earth

Universe, 2020
In this study, we use available reconstructed data to investigate periodicities of solar activity (i.e., sunspot number) and the Earth’s climate change (temperatures of Lake Qinghai in China and Vostok in Antarctica, the GISP δ18O climate record of ...
Xinhua Zhao, Willie Soon, Victor M. Velasco Herrera   +2 more
doaj   +1 more source

Effect of chronic high‐altitude hypoxia on retinal vascular phenotype, choroidal and retinal vasoreactivity in Peruvian highlanders

Experimental Physiology, EarlyView.
Abstract High‐altitude chronic hypoxia can induce excessive erythrocytosis (EE, defined as a haemoglobin concentration of ≥21 g/dL in men), leading to hyperviscosity and promoting endothelial dysfunction. We aimed to assess whether EE affects the retinal vascular phenotype and the ophthalmological vascular response to CO2.
Aymeric Paillisser, Julien Vincent Brugniaux, Florence Berquet, Jeremy De Abreu, Stephen Hogg, Emanuele Trucco, Martial Geiser, Tom Macgillivray, Aurélien Pichon, Paul Robach, Benoit Champigneulle, Samuel Verges, Christophe Chiquet   +12 more
wiley   +1 more source

Multi‐omics analysis of ion channels expressed by chicken embryo vestibular type I and type II hair cells

Experimental Physiology, EarlyView.
Abstract Balance and gaze rely on the rapid and accurate detection and signalling of head movements by vestibular type I and type II hair cells. Signal transduction and transmission involve several types of ion channels, which are acquired progressively during hair cell differentiation and whose identity is known only in part.
Giulia Cheli, Roberta Giunta, Francesca Stella, Eleonora Guidi, Umberto Laforenza, Mariarosa Polimeni, Giancarlo Russo, Francesca Borgo, Lazarevic Dejan, Sergio Masetto   +9 more
wiley   +1 more source

Mesenchymal Stem Cell‐Derived Extracellular Vesicles Ameliorate NaIO3‐Induced Dry AMD by Delivering miR‐486‐3p to Inhibit Lipocalin‐2‐Mediated Ferroptosis

MedComm, Volume 7, Issue 10, October 2026.
Our study reveals a novel mechanism by which MSC‐derived EVs alleviate NaIO3‐induced dry AMD‐like pathology. MSC‐EVs deliver miR‐486‐3p into retinal cells to directly inhibit the ferroptosis‐promoting target gene Lcn2. Concurrently, downregulated Lcn2 restores intracellular Gpx4 expression, thereby suppressing ferroptosis and rescuing retinal ...
Zheng Li, Tujing Zhao, Lin Ye, Runze Li, Huaping Tian, Ruilin Liao, Lulin Huang   +6 more
wiley   +1 more source

Predicting Geomagnetic Activity in the Ascending and Declining Phases of the Solar Cycle

Space Weather
Most predictions of space climate, that is, the long‐term behavior of the solar‐terrestrial environment, have focused on forecasting the 11‐year sunspot cycle.
Timo Qvick, Timo Asikainen, Kalevi Mursula   +2 more
doaj   +1 more source

A Causal Examination of the Solar Influence on Holocene Climate

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Variations in Total Solar Irradiance (TSI) have long been hypothesized to influence global mean surface temperature (GMST) on multidecadal to millennial timescales, but empirical evidence has remained elusive. Here, we explore the link between solar variability and climate over the pre‐industrial Holocene, when anthropogenic influences were ...
Jordan P. Landers, Julien Emile‐Geay, Alexander K. James, Stephan B. Munch, Deborah Khider, Edouard Bard   +5 more
wiley   +1 more source

On the Importance of Cycle Minimum in Sunspot Cycle Prediction [PDF]

, 1996
The characteristics of the minima between sunspot cycles are found to provide important information for predicting the amplitude and timing of the following cycle. For example, the time of the occurrence of sunspot minimum sets the length of the previous
Hathaway, David H., Reichmann, Edwin J., Wilson, Robert M.   +2 more
core  

Was one sunspot cycle lost in late XVIII century?

, 2001
We suggest that one solar cycle was lost in the beginning of the Dalton minimum because of sparse and partly unreliable sunspot observations. So far this cycle was combined with the preceding activity to form the exceptionally long solar cycle #4 in ...
G. A. Kovaltsov, K. Mursula, I. G. Usoskin   +2 more
core   +1 more source

Statistical study of the equatorial F2 layer critical frequency at Ouagadougou during solar cycles 20, 21 and 22, using Legrand and Simon’s classification of geomagnetic activity

Journal of Space Weather and Space Climate, 2012
This paper presents the statistical analysis of the diurnal variations of the F layer at the equatorial station of Ouagadougou (Lat: 12.4° N; Long: 358.5° E; dip: 5.9°) from 1966 to 1998 (=> ~11 680 days).
Amory-Mazaudier Christine, Ouattara Frédéric   +1 more
doaj   +1 more source