Results 111 to 120 of about 1,262,539 (347)
Journal of Space Weather and Space Climate, 2017 A total solar eclipse occurred on 20 March 2015, with a totality path passing mostly above the North Atlantic Ocean, which resulted in a partial solar eclipse over Belgium and large parts of Europe.
Stankov Stanimir M. +21 more
doaj +1 more source
Impact of the annular solar eclipse on June 21, 2020 on BPL time service performance
AIP Advances, 2021 BPL is a special Chinese long-wave time service system constructed and maintained by the National Time Service Center of the Chinese Academy of Sciences.
Yingming Chen +7 more
doaj +1 more source
The Measurement of Solar Diameter and Limb Darkening Function with the Eclipse Observations [PDF]
, 2011 The Total Solar Irradiance varies over a solar cycle of 11 years and maybe over cycles with longer period. Is the solar diameter variable over time too? We introduce a new method to perform high resolution astrometry of the solar diameter from the ground, through the observations of eclipses by reconsidering the definition of the solar edge.
arxiv +1 more source
Solar eclipse observations with small radio telescope in Hong Kong in 21cm radio frequency band [PDF]
arXiv, 2022 Small radio telescope in 21cm was used for studying the partial solar eclipse, with magnitude 0.89, in Hong Kong on 21st June, 2020. The radio telescope SPIDER 300A was designed and constructed by the Radio2Space Company, Italy. Radio flux density time curves (light curve) and a two-dimension mapping of the eclipse is presented in this paper.
arxiv
ChemElectroChem, EarlyView.Despite widespread use of oxidative treatments to improve vanadium redox flow battery (VRFB) efficiency, their impact on electrode overpotentials remains unclear. Using membrane‐based reference electrodes, we found that untreated negative electrodes contribute 150–250 mV to overpotential at nominal current densities, surpassing positive electrode ...
Ridge M. Bachman +3 more
wiley +1 more source
Historical eclipses and the recent solar minimum corona [PDF]
arXiv, 2010 We have studied the corona as seen at the eclipses of 1878, 1900, 1901 and others. These eclipses occurred during extended sunspot minimum conditions. We compare these data with those of the recent solar minimum corona, using data from the eclipses of July 22 2009 and August 1 2008.
arxiv
Search for neutrino radiative decays during a total solar eclipse
, 2004 We present the results of the measurements performed in the occasion of the 2001 total solar eclipse, looking for visible photons emitted through a possible radiative decay of solar neutrinos.
Birnbaun +4 more
core +1 more source
Synthetic Lignin Oligomers: Analytical Techniques, Challenges, and Opportunities
ChemSusChem, EarlyView.The review begins by discussing lignin and its structural complexity, followed by challenges in elucidating depolymerization products and the analytical techniques used. It then focuses on the chemical structure of synthetic lignin oligomers, their synthesis mechanisms, and their significance in current science. Finally, scientific gaps are identified,
Myriam Rojas +4 more
wiley +1 more source
Double eclipsing binary system KIC 3832716 [PDF]
, 2018 In this paper we analyzed the light curve of the object KIC~3832716 observed during Kepler K1 mission. We showed that this previously known eclipsing binary is in fact quadruple system, in double eclipsing binary configuration on a long period orbit with the mass ratio of eclipsing binaries $0.7 \pm 0.3$.
arxiv +1 more source
Detection and Analysis of Solar Eclipse [PDF]
Proc. SPIE 8285, 828518 (2011), 2012 We propose an algorithm that can be used by amateur astronomers to analyze the images acquired during solar eclipses. The proposed algorithm analyzes the image, detects the eclipse and produces results for parameters like magnitude of eclipse, eclipse obscuration and the approximate distance between the Earth and the Moon.
arxiv