Search Results - "Elmhamdi, A."

Two Strong White-Light Solar Flares in AR NOAA 12673 as Potential Clues for Stellar Superflares by Romano, P., Elmhamdi, A., Kordi, A. S.

“…Recently, two strong homologous white-light flares of GOES X-class occurred on the Sun on September 06, 2017, providing a rare exceptional opportunity to study…”
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Analyzing the Sequence of Phases Leading to the Formation of the Active Region 13664, with Potential Carrington-like Characteristics by Romano, P., Elmhamdi, A., Marassi, A., Contarino, and L.

“…Abstract Several recurrent X-class flares from Active Region (AR) 13664 triggered a severe G5-class geomagnetic storm between 2024 May 10 and 11. The…”
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Structure/redox/activity relationships in CeO2/CuMn2O4 CO-PROX catalysts by Elmhamdi, A., Pascual, L., Nahdi, K., Martínez-Arias, A.

“…[Display omitted] •CeO2/CuMn2O4 catalysts with Ce loading between 5.0 and 80.0wt.% examined for CO-PROX.•Different crystal size of supported (partially doped…”
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The Multifaceted M1.7 GOES-class Flare Event of 21 April 2023 in AR13283 by Elmhamdi, A., Marassi, A., Romano, P., Contarino, L., AlShehri, W., Monstein, C.

“…On 21 April 2023, a significant M1.7 solar flare erupted from Active Region 13283, accompanied by a filament eruption and a full-halo Coronal Mass Ejection,…”
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A Blowout Jet Associated with One Obvious Extreme-ultraviolet Wave and One Complicated Coronal Mass Ejection Event by Miao, Y., Liu, Y., Li, H. B., Shen, Y., Yang, S., Elmhamdi, A., Kordi, A. S., Abidin, Z. Z.

“…In this paper, we present a detailed analysis of a coronal blowout jet eruption that was associated with an obvious extreme-ultraviolet (EUV) wave and one…”
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Characterization and catalytic properties of CuO/CeO2/MgAl2O4 for preferential oxidation of CO in H2-rich streams by Elmhamdi, A., Castañeda, R., Kubacka, A., Pascual, L., Nahdi, K., Martínez-Arias, A.

“…A study of CuO/CeO2/MgAl2O4 catalysts prepared at different pH values of the impregnating solution is presented. Different physicochemical and catalytic…”
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Two Quasi-periodic Fast-propagating Magnetosonic Wave Events Observed in Active Region NOAA 11167 by Miao, Yuhu, Liu, Yu, Elmhamdi, A., Kordi, A. S., Shen, Y. D., Al-Shammari, Rehab, Al-Mosabeh, Khaled, Jiang, Chaowei, Yuan, Ding

“…We report a detailed observational study of two quasi-periodic fast-propagating (QFP) magnetosonic wave events that occurred on 2011 March 9 and 10,…”
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A New Small Satellite Sunspot Triggering Recurrent Standard and Blowout Coronal Jets by Miao, Yuhu, Liu, Y., Shen, Y. D., Elmhamdi, A., Kordi, A. S., Li, H. B., Abidin, Z. Z., Tian, Z. J.

“…In this paper, we report a detailed analysis of recurrent jets originated from a location with emerging, canceling, and converging negative magnetic field at…”
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RELATIONSHIP BETWEEN DISTRIBUTION OF MAGNETIC DECAY INDEX AND FILAMENT ERUPTIONS by Li, H., Liu, Y., Elmhamdi, A., Kordi, A.-S.

“…ABSTRACT The decay index n of a horizontal magnetic field is considered to be an important parameter in judging the stability of a flux rope. However, the…”
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Two Energy-release Processes Observed in the Eruption of a Confined Filament System by Li, Hongbo, Liu, Yu, Liu, Jihong, Elmhamdi, A., Kordi, A.-S.

“…Multiple energy-release processes in filament eruptions have been observed and are thought to be important to understand the detailed mechanism of filament…”
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Photometry and spectroscopy of the Type IIP SN 1999em from outburst to dust formation by Elmhamdi, Abouazza, Danziger, I. J., Chugai, N., Pastorello, A., Turatto, M., Cappellaro, E., Altavilla, G., Benetti, S., Patat, F., Salvo, M.

“…We present photometry and spectra of the Type IIP supernova 1999em in NGC 1637 from several days after the outburst till day 642. The radioactive tail of the…”
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Observations of a Quasi-periodic, Fast-Propagating Magnetosonic Wave in Multiple Wavelengths and Its Interaction with Other Magnetic Structures by Shen, Y.-D., Liu, Y., Su, J.-T., Li, H., Zhang, X.-F., Tian, Z.-J., Zhao, R.-J., Elmhamdi, A.

“…We present observations of a quasi-periodic fast-propagating (QFP) magnetosonic wave on 23 April 2012, with high-resolution observations taken by the…”
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Conditions for Coronal Observations at the Lijiang Observatory in 2011 by Zhao, M. Y., Liu, Y., Elmhamdi, A., Kordi, A. S., Zhang, X. F., Song, T. F., Tian, Z. J.

“…The sky brightness is a critical parameter for estimating the coronal observation conditions for a solar observatory. As part of a site-survey project in…”
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Automatic Solar Seeing Observations at Mt. Wumingshan in Western China by Song, T. F., Wen, Y. M., Liu, Y., Elmhamdi, A., Kordi, A. S., Zhao, M. Y., Zhang, X. F., Li, X. B., Wang, J. X., Fu, Y., Cheng, X. M., Xu, F. Y.

“…Mountain Wumingshan (Mt. WMS) is located in the southeastern foot of the Tibet Plateau with an altitude of 4,800 m. It is one of the candidate sites to place…”
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Twist and Writhe of the Magnetic Flux in the Super Active Region NOAA 11429 by Elmhamdi, A., Romano, P., Kordi, A. S., Al-trabulsy, H. A.

“…We used full-disk line-of-sight magnetograms taken by the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO) to study the…”
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Automatic data analysis for the Sky Brightness Monitor by Zhao, M. Y., Liu, Y., Elmhamdi, A., Kordi, A. S., Al-trabulsy, H. A., Zhang, X. F., Song, T. F., Liu, S. Q., Shen, Y. D., Tian, Z. J., Miao, Y. H.

“…The Sky Brightness Monitor (SBM) is an important instrument for measuring the brightness level for the sky condition, which is a critical parameter when…”
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Erratum to: Observations of a Quasi-periodic, Fast-Propagating Magnetosonic Wave in Multiple Wavelengths and Its Interaction with Other Magnetic Structures by Shen, Y.-D., Liu, Y., Su, J.-T., Li, H., Zhang, X.-F., Tian, Z.-J., Zhao, R.-J., Elmhamdi, A.

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Catalysts of ceria supported on copper-chromium oxide: Ceria promotion of the CO-PROX activity by Elmhamdi, A., Pascual, L., Retuerto, M., Martínez-Arias, A.

“…A copper-chromium mixed oxide with Cu:Cr 1:2 ratio has been prepared by a microemulsion method and employed as support of CeO2 in different amounts from 5 to…”
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Structure/redox/activity relationships in CeO^sub 2^/CuMn^sub 2^O^sub 4^ CO-PROX catalysts by Elmhamdi, A, Pascual, L, Nahdi, K, Martínez-Arias, A

“…CuMn2O4 prepared by a microemulsion method is employed as support of ceria with different loading level (between 5 and 80 wt.%) and the CO-PROX properties of…”
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Characterization and catalytic properties of CuO/CeO 2 /MgAl 2 O 4 for preferential oxidation of CO in H 2 -rich streams by Elmhamdi, A., Castañeda, R., Kubacka, A., Pascual, L., Nahdi, K., Martínez-Arias, A.

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