Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Ahmed A. El-Barbary"'
Autor:
Sabry A. El-Naggar, Ahmed A. El-Barbary, Yehia A. Hafez, Wesam M. Salama, Hazem M. Elkholy, Mohamed Shaker
Publikováno v:
Polymer Bulletin. 80:6433-6454
Guanosine (GU) is a purine nucleoside that has different biological applications. This study aimed to synthesize, characterize, and enhance the biological activities of GU through its covalently grafting on polyvinyl alcohol (PVA), chitosan (CS), and
Autor:
Gamal M. Nassar, Jeyon Chung, Cuc Kim Trinh, Ashraf A. El-Shehawy, Ahmed A. El-Barbary, Youngjong Kang, Jae-Suk Lee
Publikováno v:
RSC Advances. 12:31180-31185
The homopolymers P1, P2 and P3 were successfully synthesized by direct CH–CH arylation polymerization in an eco-friendly one-step coupling reaction. They present n-type properties for potential applications as acceptor polymers.
Publikováno v:
The Egyptian Journal of Radiology and Nuclear Medicine, Vol 46, Iss 1, Pp 45-52 (2015)
Background and purpose: Pre-operative imaging has a major role in surgical planning of parotid gland tumors. Aim: To assess the role of the combined techniques of ADC generated from DWI and MR spectroscopy in identification of various pathological su
Externí odkaz:
https://doaj.org/article/cfcbf982c80945f49715765bf2b36b5a
Autor:
Sherif Shaban Ragab, Afrah Sharaf, Elkhabiry Shaban, Ahmed A. El-Barbary, Ibrahim El Tantawy El Sayed
Publikováno v:
Journal of the Iranian Chemical Society. 19:291-302
Starting from 3-phenylquinazoline-2,4(1H,3H)-dithione, some new derivatives of 3H-quinazoline-4-ones were synthesized. The structures of all new compounds were inferred based on the mass spectral, infrared, and NMR spectral data as well as the elemen
Publikováno v:
The international journal of lower extremity wounds.
The aim of this study was to assess the adjuvant efficacy of adding systemic hyperbaric oxygen therapy (HBOT) to definitive venous intervention for healing of resistant chronic venous leg ulcers (VLUs). From 97 chronic VLUs, 63 were subjected to a pr
Autor:
Ahmed A. El-Barbary, Dalia R. Imam, Mohsen M.T. El–Tahawy, Salwa M. El-Hallouty, Nabila A. Kheder, Ahmed I. Khodair
Publikováno v:
Journal of Molecular Structure. 1272:134182
Publikováno v:
Iranica Journal of Energy and Environment, Vol 2, Iss 4, Pp 331-338 (2011)
In this study, Organonitrogen pesticides (ONPs) levels were determined in surface and groundwater samples from El-Rahawy area in the southwestern part of Nile Delta, Egypt. Gas Chromatography with Nitrogen Phosphorous Detector (GC-NPD) was proposed t
Externí odkaz:
https://doaj.org/article/1b27d11dba8c4f9bacc333107fd5152c
Publikováno v:
Iranica Journal of Energy and Environment, Vol 2, Iss 3, Pp 191-200 (2011)
The concentrations of organochlorine pesticides were determined in surface water and bed sediments from El Rahawy drain in the south-western part of Nile Delta. Results obtained show that the concentration of ΣDDT compounds in surface water range fr
Externí odkaz:
https://doaj.org/article/90f8ebfb4ddd4a529ade2553432beaed
Autor:
Ahmed A. El-Barbary, Mohamed A. Betiha, Gaber El-Saber Batiha, Mohamed A. Abdelwahab, Karim Samy El-Said, Hazem M. ElKholy, Ahmed S. Haidyrah, Mohamed H. Mahmoud
Reaction of 2-mercapto-3-phenylquinazolin-4(3H)-one (MPQ) with both 4-vinyl benzyl chloride and allyl bromide furnished the reactive heterocyclic monomers 3-phenyl-2-((4-vinylbenzyl) thio) quinazolin-4(3H)-one (PVTQ) and 2-(allylthio)-3-phenylquinazo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d1fe8fdccc15d4c32a00c13c3cdeae1
Publikováno v:
Delta Journal of Science. 40:59-70
Functionalization of chitosan (Cs) and modified polymethylmethacrylate (PMMA) with 5-phenyl-1,3,4-oxadiazole derivatives was achieved for biological applications. Reaction of 5-phenyl-1,3,4-oxadiazole-2-thiol (1) with both Cs and functionalized PMMA