Publications

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.Afifi, N. A., and R. A., "Kinetic disposition, systemic bioavailability and tissue distribution of apramycin in broiler chickens.", Res. Vet. Sci., , vol. 62(3):, pp. 249-252, 1997.
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and A. G. Gad-Alla, W. A. Badawy, A. E. - R. A. - R. H. A. M. M., W. A. Badawy, A. E. - H. A. Rahma, and M. M. Abou-Romia, ""Kinetics of the Passivation of Molybdenum in Salt Solutions as Inferred from Impedance and Potential Measurements", Surface and Coatings Tech. ., vol. 31, pp. 117, 1987.
A. Youssef, and M. El-Soudani, "A Known- Plaintext Attack on the Nonlinear-Feedforward Generator", , in the Proceedings of the 1st International Conference on Information and Communication Technology ,ICICT), pp. 63–76, 2003. Abstract
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Abadir, M. F., F. I. Barakat, and A. N. F. Salam, "Kinetics of Pyrolysis of Olive Kernels", IOSR Journal of Applied Chemistry, vol. 12, issue 4, pp. 50-56, 2019.
Abd-El-Hafiz, S. K., A knowledge-based approach to program understanding, : University of Maryland at College Park, 1994. Abstract
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Abd-El-Hafiz, S. K., and V. R. Basili, "A knowledge-based approach to the analysis of loops", IEEE Transactions on Software Engineering, vol. 22, issue 5: IEEE, pp. 339-360, 1996. Abstract
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Abd-El-Hafiz, S. K., and V. R. Basili, A knowledge-based approach to program understanding, : Springer Science & Business Media, 2012. Abstract
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Abd-El-Hamid, M. A., and R. R. Shahin, "Kinetics of potassium desorption from torrifluvents and calciorthids under wet and wet-dry conditions", Bulletin of Faculty of Agriculture, Cairo Univ.(Egypt), 1993. Abstract
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Abd-El-Hamid, M. A., and R. R. Shahin, "Kinetics of potassium desorption from torrifluvents and calciorthids under wet and wet-dry conditions", Bulletin of Faculty of Agriculture, Cairo Univ.(Egypt), 1993. Abstract
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Abd-Elmonim, W. G., N. I. Ghali, A. E. Hassanien, and A. Abraham, "Known-plaintext attack of DES-16 using Particle Swarm Optimization", Nature and Biologically Inspired Computing (NaBIC), 2011 Third World Congress on: IEEE, pp. 12–16, 2011. Abstract
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Abd-Elmonim, W. G., N. I. Ghali, A. E. Hassanien, and A. Abraham, "Known-plaintext attack of DES-16 using Particle Swarm Optimization", Nature and Biologically Inspired Computing (NaBIC), 2011 Third World Congress on: IEEE, pp. 12–16, 2011. Abstract
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Abd-Elrahman, A. A., M. E. A. Nabarawi, D. H. Hassan, and A. A. Taha, "Ketoprofen mesoporous silica nanoparticles SBA-15 hard gelatin capsules: preparation and in vitro/in vivo characterization", Drug delivery, vol. 23, issue 9, pp. 3387-3398, 2016. nab-amal-dooa-2016.pdf
Abdel-Aziz, M. E., and N. F. S. Morsy, "Keeping Quality of Frozen Beef Patties by Marjoram and Clove Essential oils.", Journal of Food Processing and Preservation, vol. 39, pp. 956–965, 2015. Abstract
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Abdelaal, M. S., "Knowledge hubs challenges ahead for Arab Spring", the 29th IASP World Conference on Science and Technology Parks, Estonia, Estonia, July 2012. mohamed_shokry_.pdf
Abdelalim, A., H. Shehata, N. E. Sherbiny, and S. Ahmed, "Knowledge and attitude towards stroke among workers in Cairo University Hospitals", The Egyptian Journal of Neurology, Psychiatry and Neurosurgery, vol. 53, issue 1, pp. 54 - 59, 2016/1/1. AbstractWebsite

BackgroundStroke is a major cause of mortality and morbidity worldwide. Poor knowledge of stroke risk factors, symptoms and appropriate response to stroke are possible causes of poor outcome.
Objective
The aim of this study was to evaluate the knowledge and attitude towards different aspects of stroke in a sample of Cairo University Hospitals' workers.
Patients and methods
A structured self-administered questionnaire was administered by 111 workers who were classified into clinical workers (physicians, house officers, nurses, laboratory technician and pharmacists) and nonclinical workers (administrative, sanitary and security workers).
Results
Out of 111 participants, 92 completed the questionnaire. Most participants had heard of stroke (91.3%), mostly through encountering a family member with a stroke rather than through mass media (10.9%). Hypertension was the most common identified stroke risk factor (66.3%). Clinical workers were more likely to identify risk factors. The most common identified stroke symptoms were slurring of speech (38.5%) and elevated blood pressure (38.5%). Clinical workers were more likely to identify symptoms such as slurring of speech (P = 0.042) and altered state of consciousness (P < 0.001). The most frequent response to an attack of stroke was transferring the patients to a hospital (59.8%).
Conclusion
Knowledge and perception of stroke in Cairo University Hospitals' workers appear to be poor, especially among nonclinical workers. Planning educational programs for raising the level of knowledge and awareness of stroke, both on the level of hospital workers and on the public level, is important to improve stroke management and outcome.

samy Abdelaziz, T., "Kidney diseases and covid-19 pandemic – a review article", Open Access Macedonian Journal of Medical Sciences, 2020.
Abdelaziz, S. H., M. M. E. Semelawy, A. F. Mosa, M. A. Alammy, A. A. N. Mohamed, and A. A. Mohamed, "KNOWLEDGE ATTITUDE AND PRACTICE AMONG PATIENTS WITH TYPE 2 DIABETES MELLITUS: A CROSS-SECTIONAL DESCRIPTIVE STUDY", MALAYSIAN JOURNAL OF NURSING, vol. 9, issue 1, pp. 32-38, 2017.
Abdelhafiz, A. S., E. A. Sultan, H. H. Ziady, D. M. Sayed, and W. A. Khairy, "Knowledge, perceptions and attitude of Egyptian physicians towards biobanking issues", PLOS ONE, 2021. journal.pone_.0248401_1.pdf
Abdelhafiz, A. S., Z. Mohammed, M. E. Ibrahim, H. H. Ziady, M. Alorabi, and M. Ayyad, "Knowledge, Perceptions, and Attitude of Egyptians Towards the Novel Coronavirus Disease (COVID-19)", Journal of Community Health, vol. 45, issue 5, pp. 881-890, 2020. abdelhafiz2020_article_knowledgeperceptionsandattitud.pdf
Abdelhafiz, A. S., 2 Walaa A. Khairy, M. A. Fouda, R. M. Labib, E. A. Sultan, H. H. Ziady, and D. M. Sayed, "Knowledge, Attitude, and Opinions of Egyptian Medical Students Toward Biobanking Issues", Innov Dig Health Diagn Bio, vol. 1, issue 2, pp. 1-8, 2021.
AbdelHamid, E. M., S. K. Amin, H. A. Sibak, and M. F. Abadir, "Kinetics of Reduction of El-Dekheila Pellets Fine Waste and Mill Scale Briquettes Using Hydrogen", International Journal of Applied Engineering Research, vol. 13, issue 6, pp. 3954-3965, 2018.
AbdelKader, Y., G. Emera, E. Safwat, H. A.Kassem, and N. Kassem, "The KRAS StripAssay for detection of KRAS mutation in Egyptian patients with colorectal cancer (CRC): A pilot study", Journal of the Egyptian National Cancer Institute , vol. 25, issue 1, pp. 37–41, 2013. kras.pdf
Abdelmoez, W., E. Ashour, S. M. Naguib, A. Hilal, D. A. AlMahdy, E. A. Mahrous, and E. Abdel-Sattar, "Kinetic and Thermodynamics studies for Castor Oil Extraction Using Subcritical Water Technology.", Journal of oleo science, vol. 65, issue 6, pp. 477-85, 2016 Jun 01. Abstract

In this work both kinetic and thermodynamics of castor oil extraction from its seeds using subcritical water technique were studied. It was found that the extraction process followed two consecutive steps. In these steps, the oil was firstly extracted from inside the powder by diffusion mechanism. Then the extracted oil, due to extending the extraction time under high temperature and pressure, was subjected to a decomposition reaction following first order mechanism. The experimental data correlated well with the irreversible consecutive unimolecular-type first order mechanism. The values of both oil extraction rate constants and decomposition rate constants were calculated through non-linear fitting using DataFit software. The extraction rate constants were found to be 0.0019, 0.024, 0.098, 0.1 and 0.117 min(-1), while the decomposition rate constants were 0.057, 0.059, 0.014, 0.019 and 0.17 min(-1) at extraction temperatures of 240, 250, 260, 270 and 280°C, respectively. The thermodynamic properties of the oil extraction process were investigated using Arrhenius equation. The values of the activation energy, Ea, and the frequency factor, A, were 73 kJ mol(-1) and 946, 002 min(-1), respectively. The physicochemical properties of the extracted castor oil including the specific gravity, viscosity, acid value, pH value and calorific value were found to be 0.947, 7.487, 1.094 mg KOH/g, 6.1, and 41.5 MJ/Kg, respectively. Gas chromatography analysis showed that ricinoleic acid (83.6%) appears as the predominant fatty acid in the extracted oil followed by oleic acid (5.5%) and linoleic acid (2.3%).