Mohamed Ibrahim Mohamed

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A series of 2-(substituted phenyl)-3-[3-(2-oxo-2H-chromen-3-yl)-5-thioxo-1,5-dihydro-4H-1,2,4-triazol-4-yl]-1,3-thiazolidin-4-ones, 8a-n, were synthesized and evaluated for their antimicrobial activity. The structures of the compounds were confirmed on the basis of their elemental analysis and spectral data. Compounds 8k, 81 and 8m showed significant(More)
Energy availability is one of the main constraints in the design of wireless sensor nodes for the monitoring of water distribution systems. Harvesting energy from the ambient environment has received increasing attention in modern research due to the fact that it can significantly prolong the lifetime of sensor nodes. However, power management is still a(More)
BACKGROUND A diagnostic algorithm for appendicitis in children was created to reduce computed tomography (CT) use owing to the risk of cancer from radiation exposure and cost of CT. This study evaluates the impact of the algorithm on CT use and diagnostic accuracy of appendicitis. METHODS Patients ≤18 years who underwent appendectomy for suspected(More)
Recently, there has been a growing interest in using wireless sensor networks for monitoring water distribution infrastructure to help drinking water utilities to have better understanding of hydraulic and water quality statement of their underground assets. One of the challenges is limited power resources for operating the smart sensors and sensor(More)
Cadmium (Cd) is a non-essential element and is a widespread environmental pollutant. Exposure to cadmium can result in cytotoxic, carcinogenic and mutagenic effects. The aim of the current work was to evaluate the protective effect of Aquilegia vulgaris extract against the oxidative stress and the genotoxicity induced by Cd using the chromosomal aberrations(More)
This paper describes a primary Vickers hardness standard, which was developed by National Institute of for Standards (NIS), of Egypt. It is utilized synthetically the optics, precise mechanism, electronics, computer and automatic controlled technology. The CCD image system is employed, which makes the standard measuring of Vickers hardness value(More)
In this work, the production of n-butyl acetate was carried out successfully using solid catalysts in a continuous reactive distillation column. The present study includes three parts; kintects study, reactive distillation unit, and mathematical modeling. In the first part the kinetic of the esterification reaction to produce n-butyl acetate in a(More)
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