Results 71 to 80 of about 2,282,682 (263)

Effects of solar flares on the ionosphere as shown by the dynamics of ionograms recorded in Europe and South Africa

open access: yesAnnals of Geophysics, 2019
. We have investigated the solar flare effects on ionospheric absorption with the systematic analysis of ionograms measured at midlatitude and low-latitude ionosonde stations under different solar zenith angles.
V. Barta   +4 more
semanticscholar   +1 more source

A Parameter Study for Modeling Mg ii h and k Emission during Solar Flares [PDF]

open access: yes, 2017
Solar flares show highly unusual spectra in which the thermodynamic conditions of the solar atmosphere are encoded. Current models are unable to fully reproduce the spectroscopic flare observations, especially the single-peaked spectral profiles of the ...
F. Rubio da Costa, L. Kleint
semanticscholar   +1 more source

Mini-filament Eruptions Triggering Confined Solar Flares Observed by ONSET and SDO [PDF]

open access: yesAstrophysical Journal, 2018
Using the observations from the Optical and Near-infrared Solar Eruption Tracer (ONSET) and the Solar Dynamics Observatory (SDO), we study an M5.7 flare in AR 11476 on 2012 May 10 and a micro-flare in the quiet Sun on 2017 March 23.
Shu-Hong Yang, Jun Zhang
semanticscholar   +1 more source

Do Financialization and Innovation Enhance Environmental Sustainability in Sub‐Saharan Africa?

open access: yesThunderbird International Business Review, EarlyView.
ABSTRACT This study addresses the perception of Sub‐Saharan Africa (SSA) as a region with limited financial capabilities and technological advancement to enhance environmental sustainability. Conducted across 24 SSA countries from 2000 to 2021, the research employs instrumental IV and panel quantile regressions.
Emmanuel Kwaku Manu   +2 more
wiley   +1 more source

Alternative Waiting Time Statistics for the Lu and Hamilton Avalanche Model

open access: yesThe Astrophysical Journal, 2023
The solar corona hosts many explosive events. Among them, flares are some of the most energetic, rapidly releasing huge amounts of energy and, in the case of the largest ones, producing coronal mass ejections that have the potential to harm life on our ...
Matías Kychenthal, Laura F. Morales
doaj   +1 more source

Plant‐derived nanovesicles as potential drug delivery systems for topical use: Emerging applications in dermatology and cosmetology

open access: yesVIEW, EarlyView.
Plant‐derived nanovesicles (PDNVs) are naturally secreted by fruit, vegetables, seeds, leaves and other natural sources. Used as drug delivery systems, they can combine intrinsic therapeutic activity, enhanced skin permeation and cargo‐carrying capacity, suitable for dermatological and cosmetic applications including hydration, antioxidant/anti ...
Dorotea Fiore   +5 more
wiley   +1 more source

Images of solar flares in HMI magnetogram

open access: yes, 2021
This dataset contains solar flares in classes B, C, M, and X at HMI Magnetogram.
Gradvohl, André Leon Sampaio   +1 more
core   +2 more sources

A Statistical Study of Photospheric Magnetic Field Changes During 75 Solar Flares [PDF]

open access: yes, 2017
Abrupt and permanent changes of photospheric magnetic fields have been observed during solar flares. The changes seem to be linked to the reconfiguration of magnetic fields, but their origin is still unclear.
J. S. Castellanos Durán   +2 more
semanticscholar   +1 more source

Afamelanotide improves quality of life and light tolerance in Austrian erythropoietic protoporphyria patients

open access: yesJDDG: Journal der Deutschen Dermatologischen Gesellschaft, EarlyView.
Summary Background Erythropoietic protoporphyria (EPP) is a rare genetic disorder characterized by severe phototoxic reactions that occur within minutes of light exposure. In clinical studies, afamelanotide has been shown to prolong pain‐free sun exposure, improve quality of life, and reduce the frequency and severity of phototoxic reactions ...
Magdalena Seidl‐Philipp   +9 more
wiley   +1 more source

Statistics of Solar White-light Flares. I. Optimization and Application of Identification Methods

open access: yesThe Astrophysical Journal
White-light flares (WLFs) are energetic activity in the stellar atmosphere. However, observed solar WLFs are relatively rare compared to stellar WLFs or solar flares observed at other wavelengths, which limits our further understanding of solar/stellar ...
Yingjie Cai   +3 more
doaj   +1 more source

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