Results 111 to 120 of about 3,012 (284)

Sunspot Number Variations [PDF]

In this activity students find the patterns that emerge when sunspot numbers are plotted over a period of time. Students learn about sunspot variations and the solar cycle, and are able to predict future solar minimums and solar maximums.
Beverly Meier
core  

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, Sindri Traustason, Sveinn H. Hardarson, Alexander Kyhnel, Einar Stefansson, Jens F. Kiilgaard, Morten la Cour, Javad Nouri Hajari, Therese Krarup   +8 more
wiley   +1 more source

Renal‐vascular axis: unmasking its role in vascular endothelial growth factor‐inhibitor vascular toxicity in cancer patients

British Journal of Pharmacology, EarlyView.
Abstract Vascular toxicity is a growing concern in cancer patients receiving vascular endothelial growth factor inhibitor (VEGFi) therapy, posing a significant threat to patient prognosis. While the primary mechanism of VEGFi‐induced vascular toxicity is linked to redox‐sensitive reactions that disrupt vascular tone, leading to hypertension and ...
Grace Whelan, Karla B. Neves
wiley   +1 more source

Solar flare forecasting using morphological properties of sunspot groups

Journal of Space Weather and Space Climate, 2019
We describe a new tool developed for solar flare forecasting on the base of some sunspot group properties. Assuming that the flare frequency follows the Poisson statistics, this tool uses a database containing the morphological characteristics of the ...
Falco Mariachiara, Costa Pierfrancesco, Romano Paolo   +2 more
doaj   +1 more source

An Examination of Sunspot Number Rates of Growth and Decay in Relation to the Sunspot Cycle

, 2006
On the basis of annual sunspot number averages, sunspot number rates of growth and decay are examined relative to both minimum and maximum amplitudes and the time of their occurrences using cycles 12 through present, the most reliably determined sunspot ...
Hathaway, David H., Wilson, Robert M.
core  

Discovery of PHB1 as a Novel Candidate Gene in Dominant Optic Atrophy

Clinical Genetics, EarlyView.
A heterozygous PHB1 missense variant (p.Ser147Phe) segregates with autosomal dominant optic atrophy in a multi‐generation family. Structural and cellular analyses suggest altered mitochondrial dynamics, identifying PHB1 as a novel candidate gene for hereditary optic neuropathy. ABSTRACT Hereditary optic neuropathies comprise a genetically heterogeneous
Marija Volk, Aleš Maver, Martina Jarc Vidmar, Nuša Trošt, Tanja Višnjar, Ana Fakin, Lea Kovač, Maja Šuštar Habjan, Lucija Malinar, Sanja Petrović Pajić, Urška Dragin Jerman, Rok Romih, Marko Hawlina, Borut Peterlin   +13 more
wiley   +1 more source

Multi‐Parametric Magnetic Resonance Imaging to Assess Empagliflozin Effect on the Kidneys in People With Type 2 Diabetes Mellitus: A Pilot Clinical Trial

Diabetes, Obesity and Metabolism, EarlyView.
ABSTRACT Aims Empagliflozin is renoprotective in Type 2 diabetes mellitus (T2DM). Our primary aim was to assess empagliflozin's effect on glomerular filtration rate and renal vascular resistance using multiparametric MRI (MpMRI). Our secondary aim was to assess the impact of empagliflozin on additional MpMRI‐derived metrics including markers of tissue ...
Ruth P. Lim, Salma Qassin, Lucy McKenna, Emma Hornsey, Dominic Italiano, Leonid Churilov, Richard J. MacIsaac, Jas‐mine Seah, Elif I. Ekinci, The Austin EMPA‐MRI Study Group   +9 more
wiley   +1 more source

Solar flare rates and probabilities based on the McIntosh classification: Impacts of GOES/XRS rescaling and revisited sunspot classifications

Journal of Space Weather and Space Climate
In December 2019, the Space Weather Prediction Center (SWPC) started using the GOES1-16 satellite as its primary input for solar X-ray flux monitoring.
Janssens Jan, Delouille Véronique, Clette Frédéric, Andries Jesse   +3 more
doaj   +1 more source

Statistics of sunspot group clusters

Journal of Space Weather and Space Climate, 2013
The Zubrzycki method is utilized to find all sunspot groups which are close to each other during each Carrington rotation. The sunspot group areas and their positions for the years 1874–2008 are used.
Getko Ryszarda
doaj   +1 more source

Analysis and prediction of sunspot numbers

Geophysical Research Letters, 1985
An extension of anharmonic frequency analysis (AFA) is used to analyze and extrapolate the sunspot numbers. The higher resolution possible with this new approach in principle permits a better accuracy of the prediction for a given extrapolation range, provided the time series is stationary.
openaire   +1 more source