Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Ahmed Elkhateeb"'
Autor:
Ahmed Abdelhamid Maamoun, Ramadan M. Abouomar, Tarek M. El-Basheer, Mostafa A. Azab, ElSayed G. Zaki, Shymaa M. Elsaeed, Ahmed Elkhateeb
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-20 (2024)
Abstract This study aims to investigate the potential of integrating natural biochar (BC) derived from eggshell waste into flexible polyurethane (FPU) foam to enhance its mechanical and acoustic performance. The study explores the impact of incorpora
Externí odkaz:
https://doaj.org/article/01e72f9d8da843da9636b7cbbc250b0a
Publikováno v:
Ain Shams Engineering Journal, Vol 15, Iss 4, Pp 102608- (2024)
This work proposes a new formula for predicting riser’s heights in auditoria with variable risers (known as isacoustic curves). Unlike the standard formulae, the proposed one considers the effect of head shape on sightlines. The proposed formula wa
Externí odkaz:
https://doaj.org/article/9fd487b774384459bd7edc8c9b94d4e6
Autor:
Mahmoud Emam, Passant E. Moustafa, Ahmed Elkhateeb, Sameh R. Hussein, Mona M. Marzouk, Sahar S. Abd El-Rahman, El-Sayed S. Abdel-Hameed, Rehab F. Abdel-Rahman
Publikováno v:
Heliyon, Vol 9, Iss 11, Pp e22367- (2023)
Externí odkaz:
https://doaj.org/article/6bd101a6889840b295965931354ede80
Autor:
Doaa K. Hassan, Ahmed Elkhateeb
Publikováno v:
Frontiers of Architectural Research, Vol 10, Iss 3, Pp 516-539 (2021)
Walking experience through urban spaces is a frequent daily activity. Thus, planning and designing for walkability become crucial for building up quality of life. Our daily walks around the city are affected by fulfilling the needed psychological con
Externí odkaz:
https://doaj.org/article/9554466f71a24423ba8893a65b022932
Autor:
Soha Eldakdoky, Ahmed Elkhateeb
Publikováno v:
Frontiers of Architectural Research, Vol 10, Iss 2, Pp 410-419 (2021)
This paper investigates the noise inside a metro coach running through the most recent tunnel of Cairo. The study focuses on the effects of alignment profiles on the A-weighted noise level. Although the latest line has not been studied yet, noise lev
Externí odkaz:
https://doaj.org/article/ddf885a9628d4191964e0a9d305b1334
Autor:
Mahmoud Emam, Passant E. Moustafa, Ahmed Elkhateeb, Sameh R. Hussein, Mona M. Marzouk, Sahar S. Abd El-Rahman, El-Sayed S. Abdel-Hameed, Rehab F. Abdel-Rahman
Publikováno v:
Heliyon, Vol 7, Iss 2, Pp e06205- (2021)
Background: The plant kingdom is considered one of the most common sources for structural and biological diversity. In particular, the wild category acquires our attention to investigate the phytochemical and the biological evaluations. Methods: Dobe
Externí odkaz:
https://doaj.org/article/f107b20db53440a6a1f19078b0c387b8
Autor:
Soha Eldakdoky, Ahmed Elkhateeb
Publikováno v:
Frontiers of Architectural Research, Vol 6, Iss 1, Pp 1-16 (2017)
Based on the commonly used indicators for speech intelligibility, this work acoustically evaluates the two largest auditoria in the Faculty of Engineering, Helwan University, Cairo, Egypt, using experimental and digital simulation techniques. Design
Externí odkaz:
https://doaj.org/article/9cf67f231c0541be911231fcc4d9d784
Autor:
Ahmed Elkhateeb, Rasha R. Abdel Latif, Mona M. Marzouk, Sameh R. Hussein, Mona E. S. Kassem, Wagdy K. B. Khalil, Mohamed A. El-Ansari
Publikováno v:
Pharmaceutical Biology, Vol 55, Iss 1, Pp 139-145 (2017)
Context: Dobera glabra (Forssk.) Poir (Salvadoraceae) is a highly valued tree with diverse importance as special mineral sourced feed and a folkloric tool for forecasting droughts. However, there are no reports on its phytochemical and biological inv
Externí odkaz:
https://doaj.org/article/187ef52c6d5b45b5b52fe863e08f5954
Autor:
Ahmed Elkhateeb, Ahmed A. El-Beih, Amira M. Gamal-Eldeen, Montaser A. Alhammady, Shinji Ohta, Paul W. Paré, Mohamed-Elamir F. Hegazy
Publikováno v:
Marine Drugs, Vol 12, Iss 4, Pp 1977-1986 (2014)
Chemical investigations of the Egyptian soft coral Sarcophyton ehrenbergi have led to the isolation of compounds 1–3 as well as the previously reported marine cembranoid diterpene sarcophine (4). Structures were elucidated by comprehensive NMR and
Externí odkaz:
https://doaj.org/article/46f7b00bc9b94874bb03a12093bd8eba
Autor:
Ahmed Elkhateeb, Soha Eldakdoky
Publikováno v:
International Journal of Architectural Engineering Technology. 9:73-99
This study investigates the optimal reverberation time in masjids (mosques) from worshippers' viewpoint for the two modes of performance: recitation and sermon/speech. It also examines the effect of both age and gender on worshippers' preferences. To