A. El-Sayed

Publications12
h-index9
Citations275
Highly Influential Citations6
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Distribution of the energy release, b-values and seismic hazard in Egypt
A review of the seismicity and seismic history of Egypt indicates areas of high activity concentrated along Oligocene-Miocene faults. This supports the idea of recent activation of the… Expand
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Seismic hazard of Egypt
Earthquake hazard parameters such as maximum expected magnitude,Mmax, annual activity rate,λ, andb value of the Gutenberg-Richter relation have been evaluated for two regions of Egypt. The applied… Expand
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Catharanthus alkaloids XXXVII. 16-Epi-Z-isositsirikine, a monomeric indole alkaloid with antineoplastic activity from Catharanthus roseus and Rhazya stricta.
16-Epi-Z-isositsirikine (1) has been isolated from the leaves of Catharanthus roseus and Rhazya stricta and identified through a combination of spectral interpretation and chemical correlation. The… Expand
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Testicular veins: anatomy and role in varicocelogenesis and other pathologic conditions.
The anatomy of the testicular veins of 42 male cadavers were studied to determine the extent of their role in varicocelogenesis and other pathologic conditions. The results of that study are… Expand
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Catharanthus alkaloids. XXXIV. Catharanthamine, a new antitumor bisindole alkaloid from Catharanthus roseus.
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Catharanthus alkaloids, XXXVIII. Confirming structural evidence and antineoplastic activity of the bisindole alkaloids leurosine-N'b-oxide (pleurosine), roseadine and vindolicine from Catharanthus…
Additional and confirming chemical and spectroscopic evidence for vindolicine (4), roseadine (5), and leurosine-N'b-oxide (6) is presented. Leurosine-N'b-oxide (6) was found to be exceptionally… Expand
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Catharanthus alkaloids XXXIII. 21'Oxo-leurosine from Catharanthus roseus (apocynaceae).
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An extractive-spectrophotometric method for the determination of nicotine.
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Obstetric Brachial Plexus Injury in Subsequent Deliveries
Two cases of obstetrical brachial plexus injury in subsequent deliveries in the same family are described. Medicolegal aspects, review of the literature and recommendations regarding its prevention… Expand
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Life expectancy and cause of death in the Kuwaiti population 1987-2000.
Census and health data were analysed to determine changes in life expectancy at birth during 1987-2000 in the Kuwaiti population and to correlate these with cause-specific annual mortality rates.… Expand
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