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Altagamoa Al Khames, Main centre of town, end of 90th Street
New Cairo
Egypt
Faculty of Engineering & Technology
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Dr. M. Ehab

Basic information

Name : Dr. M. Ehab
Title: Assistant Professor
Personal Info: Mohamed Ehab obtained his Ph.D. in Radiational-Nuclear Physics as a channel program between Ain shams University and Helmholtz-Zentrum Munchen and, during his work toward Ph.D., he was a visiting researcher at Institute of radiation protection, Helmholtz center in Munich, Germany for two periods. He obtained his BSc and MSc. In Special Physics from Faculty of Science, Ain shams University, Egypt in 2006 and 2011, respectively, where he was the third of his class. From 2006 to 2015 he was Teaching assistant in the Mathematics and Engineering Physics department. Currently, he is an Assistant Professor in Mathematics and Engineering Physics department, Faculty of Engineering and Technology, Future University in Egypt. Mohamed’s research interests include radiation shielding, thermo-luminesce dosimeters, radiation measurements, pollution measurements. View More...

Education

Certificate Major University Year
PhD Physics Ain Shams University - Faculty of Pharmaceutical Sciences 2015
Masters Science of Physics Faculty of Pharmaceutical Sciences - Ain Shams University 2011
Bachelor Physics Faculty of Pharmaceutical Sciences - Ain Shams University 2006

Teaching Experience

Name of Organization Position From Date To Date
El-Shorouk Academy Teaching Assistant 01/01/2006 01/01/2007

Courses

Code Name
PHY 131 Physics 1 PHY 131

Researches /Publications

Radon and Thoron Concentrations Inside Ancient-Egyptian Tombs at Saqqara Region: Time-resolved and Seasonal Variation Measurements - 01/0

Mohamed Ehab Ahmed Fakhr Eldin Bakr

E. Salama, W. Ruehm

01/08/2018

For complete assessment of inhalation doses of radon and its progeny inside the three main ancient Egyptian tombs in Saqqara, seasonal radon concentrations have been measured by using a new electronic device that allows for measurement of real-time–resolved radon concentrations. Measurements were complemented by very fast measurements of thoron concentrations, which turned out to be low. Based on these measurements, annual residence time inside these tombs and the newest International Commission on Radiological Protection–recommended radon dose conversion coefficients or seasonal effective doses were calculated. The results indicate that workers receive highest annual effective doses of up to 140 mSv, which exceeds the annual limit of 20 mSv, whereas lower values up to 15 mSv are received by guides. In contrast, much lower doses were obtained for one-time visitors of the investigated tombs. The obtained results are somewhat different but still consistent with those previously obtained by means of fixed passive dose meters at some of the investigated places. This indicates that reasonable estimates of the effective dose of radon can be also obtained from short-term radon measurements carried out only twice a year (summer and winter season). Increasing the ventilation, minimizing the working times, etc., are highly recommended to reduce the annual effective dose.

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Radiological safety assessment inside ancient Egyptian tombs in Saqqara - 01/0

Mohamed Ehab Ahmed Fakhr Eldin Bakr

S. U. El-Kameesy, E. Salama, S. Elfiki, W. Ruehm

01/03/2016

Many archaeological sites in Egypt are unique worldwide, such as ancient tombs and pyramids, because they document fundamental developments in human civilization that took place several thousands of years ago. For this reason, these sites are visited by numerous visitors every year. The present work is devoted to provide a pre-operational radiological baseline needed to quantify occupational radiation exposure at the famous Saqqara region in Cairo, Egypt. A hyperpure Ge detector has been used in the γ-ray spectrometric analysis while the (222)Rn concentration was measured using a portable radon monitor RTM 1688-2, SARAD. The mean specific activities of (226)Ra, (232)Th and (40)K in the samples collected from the interior walls of the Saqqara tombs were determined and found to show average values of 16, 8.5 and 45 Bq kg(-1), respectively. The concentration of radon was measured inside the tombs Serapeum, South tomb and the Zoser Pyramid (fifth level) and an associated average working level of 0.83 WL was obtained. In order to avoid the health hazards associated with the exposure to radon during the long period of work inside these tombs, proposed solutions are introduced.

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Indoor Radon Monitoring and Gamma Activity Levels Inside Some Ancient Egyptian Tombs in Luxor - 01/0

Mohamed Ehab Ahmed Fakhr Eldin Bakr

S. U. El-Kameesy, E. Salama, S. Elfiki

01/06/2015

In the present work, radon concentrations in five selected tombs in the valley of kings, Luxor city, have been evaluated utilizing a portable radon monitor RTM 1688-2, SARAD. Additionally, specific radioactivity concentrations of the radionuclides 226Ra, 232Th and 40K in the samples taken from the selected tombs showing results lower than the average international radioactivity levels. Seasonal variations of radon concentration have been observed, with high summer average radon concentration values at the tomb of RAMESES II SONS (KV 5) of about 6365 ± 190 Bq.m-3for the tomb’s inner chamber and 5511 ± 276 Bq.m-3for the tomb’s middle chamber. The highest winter average radon concentration was observed at RAMESES VI tomb (KV9) with a value of 491 ± 16 Bq.m-3. The tour guides are found to expose to an average associated annual effective doses ranging from 0.360 to 14.592 mSv.y-1and the visitors from 0.001 to 0.029 mSv.y-1while the corresponding results for workers ranging from 3.455 to 140.081 mSv.y-1 which exceed the world lower recommended level (3-10 mSv.y-1). Accordingly, to avoid the health hazards associated with the exposure to radon during the long period of work inside these tombs, proposed solutions are introduced.

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Backbending Phenomena in Even-Mass Gd Isotopes - 01/0

Mohamed Ehab Ahmed Fakhr Eldin Bakr

S. U. El-Kameesy, E. Salama, S. Elfiki1

01/05/2010

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Awards

Award Donor Date
• FUE Award to encourage scientific research Future University in Egypt 2015
• FUE Award to encourage scientific research Future University in Egypt 2011

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