Results 91 to 100 of about 1,226,273 (354)

The Effect of the 21 August 2017 Total Solar Eclipse on the Phase of VLF/LF Signals

Earth and Space Science, 2020
An experimental study of the phase and amplitude observations of sub‐ionospheric very low and low frequency (VLF/LF) signals is performed to analyze the response of the lower ionosphere during the 21 August 2017 total solar eclipse in the United States ...
A. Rozhnoi, M. Solovieva, S. Shalimov, Dimitar Ouzounov, P. Gallagher, G. Verth, J. McCauley, S. Shelyag, V. Fedun   +8 more
semanticscholar   +1 more source

The Effect of Pore Functionality in Multicomponent Covalent Organic Frameworks on Stable Long‐Term Photocatalytic H2 Production

Advanced Energy Materials, EarlyView.
Five COFs are synthesized through a multicomponent reaction, preserving a similar backbone while introducing varying pore functionalities. All COFs demonstrate excellent chemical stability and sustained H2 production under sunlight for 7‐15 days. The imidazole‐functionalized COF exhibits the highest H2 production, which can be attributed to its high ...
Prasenjit Das, Gouri Chakraborty, Jin Yang, Jérôme Roeser, Hüseyin Küçükkeçeci, Anh Dung Nguyen, Michael Schwarze, Jose Gabriel, Christopher Penschke, Shengjun Du, Vincent Weigelt, Islam E. Khalil, Johannes Schmidt, Peter Saalfrank, Martin Oschatz, Jabor Rabeah, Reinhard Schomäcker, Franziska Emmerling, Arne Thomas   +18 more
wiley   +1 more source

The centre-to-limb variations of solar Fraunhofer lines imprinted upon lunar eclipse spectra - Implications for exoplanet transit observations

, 2015
The atmospheres of exoplanets are commonly studied by observing the transit of the planet passing in front of its parent star. The obscuration of part of the stellar disk during a transit will reveal aspects of its surface structure resulting from ...
Fosbury, Robert A. E., Pallé, Enric, Petr-Gotzens, Monika G., Yan, Fei, Zhao, Gang   +4 more
core   +1 more source

Triboelectric Tactile Transducers for Neuromorphic Sensing and Synaptic Emulation: Materials, Architectures, and Interfaces

Advanced Energy and Sustainability Research, EarlyView.
Triboelectric nanogenerators are vital for sustainable energy in future technologies such as wearables, implants, AI, ML, sensors and medical systems. This review highlights improved TENG neuromorphic devices with higher energy output, better stability, reduced power demands, scalable designs and lower costs.
Ruthran Rameshkumar, Arunkumar Chandrasekhar, Poongundran Selvaprabhu   +2 more
wiley   +1 more source

The solar eclipse and its relation with higree months

Iraqi Journal of Physics, 2019
The solar eclipse occurs at short time before the crescent birth moment when the moon near any one of moon orbit nodes It is important to determine the synchronic month which is used to find Higree date.
Abdul Rahman H. S.
doaj   +1 more source

The application of a Trous wave filtering and Monte Carlo analysis on SECIS 2001 solar eclipse observations

, 2005
8000 images of the Solar corona were captured during the June 2001 total Solar eclipse. New software for the alignment of the images and an automated technique for detecting intensity oscillations using multi scale wavelet analysis were developed.
A. C. Katsiyannis, A. C. Katsiyannis, A. F. Nemec, B. Roberts, C. Torrence, D. Banerjee, D. R. Williams, D. R. Williams, E. O'Shea, F. Murtagh, F. P. Keenan, J. M. Pasachoff, J. M. Pasachoff, J.-L. Starck, K. J. H. Phillips, S. Koutchmy, V. M. Nakariakov   +16 more
core   +1 more source

Multi-instrument observations of the solar eclipse on 20 March 2015 and its effects on the ionosphere over Belgium and Europe

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., Bergeot Nicolas, Berghmans David, Bolsée David, Bruyninx Carine, Chevalier Jean-Marie, Clette Frédéric, De Backer Hugo, De Keyser Johan, D’Huys Elke, Dominique Marie, Lemaire Joseph F., Magdalenić Jasmina, Marqué Christophe, Pereira Nuno, Pierrard Viviane, Sapundjiev Danislav, Seaton Daniel B., Stegen Koen, Van der Linden Ronald, Verhulst Tobias G.W., West Matthew J.   +21 more
doaj   +1 more source

crisscrossing Science Episode 027: Veni Vidi Eclipsim [PDF]

, 2017
In this episode recorded live during the Great American Eclipse, Chris Gaiser (professor of biology at Linfield College) and Mike Crosser (professor of physics at Linfield College) view the 2017 solar eclipse with a thousand of their closest friends at ...
Crosser, Michael S., Gaiser, J. Christopher   +1 more
core  

A new mass-ratio for the X-ray Binary X2127+119 in M15?

, 2004
The luminous low-mass X-ray binary X2127+119 in the core of the globular cluster M15 (NGC 7078), which has an orbital period of 17 hours, has long been assumed to contain a donor star evolving off the main sequence, with a mass of 0.8 solar masses (the ...
Bailyn, Bailyn, de Jong, Dotani, Drew, Durrell, Fabian, Fahlman, Horne, Hut, Ilovaisky, Ioannou, Ioannou, L. van Zyl, McMillan, Naylor, Naylor, P. A. Charles, Podsiadlowski, Pylyser, T. Naylor, Taam, van Zyl, Webbink, White, Z. Ioannou   +25 more
core   +1 more source

Spectral irradiance curve calculations for any type of solar eclipse [PDF]

A simple procedure is described for calculating the eclipse function (EF), alpha, and hence the spectral irradiance curve (SIC), (1-alpha), for any type of solar eclipse: namely, the occultation (partial/total) eclipse and the transit (partial/annular ...
Deepak, A., Merrill, J. E.
core   +1 more source