Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Amr Ragheb"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract Millimeter wave (mmWave) technologies at 60 GHz and 100 GHz bands are currently gaining significant attention for its potential to meet the demanding needs of next-generation networks. These include ultra-high data rate, ultra-low latency, h
Externí odkaz:
https://doaj.org/article/54a9c701b7d74a3194e63d552c412f36
Autor:
Amr Ragheb Hieba, Emad Abdelmoenam Arida, Hassan Aly Hassan Osman, Salma Alaa El Din Mostafa Imbaby, Heba Abdel Hamid Ahmed Moharem
Publikováno v:
Egyptian Journal of Anaesthesia, Vol 39, Iss 1, Pp 304-312 (2023)
ABSTRACTBackground COVID-19 pandemic was caused by the SARS-CoV-2 virus that was thought to be associated with microvascular endothelial injury. This study aimed to demonstrate the effect of COVID-19 on markers of endothelial shedding and its effect
Externí odkaz:
https://doaj.org/article/88c8290c1d08445a9ed30db9a806b89e
Autor:
Abderrahmen Trichili, Amr Ragheb, Dmitrii Briantcev, Maged A. Esmail, Majid Altamimi, Islam Ashry, Boon S. Ooi, Saleh Alshebeili, Mohamed-Slim Alouini
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 2597-2615 (2021)
Progress in optical wireless communication (OWC) has unleashed the potential to transmit data in an ultra-fast manner without incurring large investments and bulk infrastructure. OWC includes wireless data transmissions in three optical sub-bands; ul
Externí odkaz:
https://doaj.org/article/fc6776cbc7de4cdfa6a3bd371fda56d4
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 6, Pp 1-10 (2020)
In this work, we propose and experimentally demonstrate a centralized all-optical network for sensing signal distribution to a large number of remote sites. The reach range of high-resolution sensing systems is often limited due to atmospheric effect
Externí odkaz:
https://doaj.org/article/c041760517a4449fbf4ec865cd441720
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 3, Pp 1-12 (2019)
In this paper, we study the separability of the commonly used features to monitor the performance of optical signal in coherent optical systems. Specifically, our study focuses on the histogram-based features; the asynchronous amplitude histogram (AA
Externí odkaz:
https://doaj.org/article/618ced903abc4f0dbf57b5e0a1954c73
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 1, Pp 1-12 (2019)
One of the main drawbacks of orthogonal frequency division multiplexing (OFDM) is the unpredictable significant increase in the peak-to-average power ratio (PAPR), due to the large dynamic range of the OFDM symbol waveforms. To overcome this problem,
Externí odkaz:
https://doaj.org/article/b892fa72b5664208b19eeae4c5720724
Autor:
Turki Alrubeaan, Khalid Albagami, Amr Ragheb, Saeed Aldosari, Majid Altamimi, Saleh Alshebeili
Publikováno v:
IEEE Access, Vol 7, Pp 124844-124853 (2019)
Intensive research has been developed to either design or classify low probability of intercept (LPI) radar signals. These types of signals are used in different sensitive electronic warfare applications such as electronic support, electronic attack,
Externí odkaz:
https://doaj.org/article/7ca4e4943bba4197a8ee9222c467ebb7
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 1, Pp 1-12 (2017)
In contrast to traditional free space optical (FSO) systems, the new generation is aimed to be transparent to optical fiber where protocols, high signal bandwidths, and high data rates over fiber are all maintained. In this paper, we experimentally d
Externí odkaz:
https://doaj.org/article/60b1291688c4499eb4b10b6650b12b8c
Publikováno v:
International Journal of Antennas and Propagation, Vol 2018 (2018)
We present a 4 × 4 slot-coupled Vivaldi antenna (SCVA) array unit cell, which offers wide bandwidth and high gain (~23 dBi) at the millimeter wave (mmW) frequencies of 28 GHz and 38 GHz. A single SCVA element is first presented, which has a bandwidt
Externí odkaz:
https://doaj.org/article/cf75e3bbef894fa1a2c3b77af5d98ac7
Endothelial glycocalyx shedding during active COVID-19 infection and its effect on disease severity.
Autor:
Hieba, Amr Ragheb, Arida, Emad Abdelmoenam, Osman, Hassan Aly Hassan, Imbaby, Salma Alaa El Din Mostafa, Moharem, Heba Abdel Hamid Ahmed
Publikováno v:
Egyptian Journal of Anaesthesia; Dec2023, Vol. 39 Issue 1, p304-312, 10p