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Youssef, M., E. Chong, and K. Phang, "Distortion analysis using signal flow graphs and Volterra series", 2003 46th Midwest Symposium on Circuits and Systems, vol. 1, pp. 84 - 89 Vol. 1, 27-30 Dec. 2003. Abstract

This paper describes a graphical method of nonlinear circuit analysis. The method combines circuit analysis using driving-point impedances and signal flow graphs with distortion analysis using the Volterra series. The result is a method of distortion analysis which is more intuitive and flexible than traditional methods. The method is demonstrated in the analysis of a common-emitter amplifier in which the second- and third-order harmonic distortion ratios are determined. The method is also applied to comparing the distortion of different voltage buffer circuits based on an emitter follower and on a differential pair with unity gain feedback

Youssef, A. R., The Development of Botulinum Type-A toxin Muscle Weakness Model of Osteoarthritis., , Calgary, AB, Canada, University of Calgary, 2010.
Youssef, R. M., D. Mahgoub, H. M. Mashaly, E. El-Nabarawy, N. Samir, and M. El-Mofty, "Different narrowband UVB dosage regimens in dark skinned psoriatics: a preliminary study", Photodermatology, photoimmunology & photomedicine, vol. 24, no. 5: Wiley Online Library, pp. 256–259, 2008. Abstract
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Youssef, R. M., D. Mahgoub, H. M. Mashaly, E. El-Nabarawy, N. Samir, and M. El-Mofty, "Different narrowband UVB dosage regimens in dark skinned psoriatics: a preliminary study", Photodermatology, photoimmunology & photomedicine, vol. 24, no. 5: Wiley Online Library, pp. 256–259, 2008. Abstract
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Youssef, R., O. Shaker, S. Sobeih, H. Mashaly, and W. Z. Mostafa, "Detection of herpes simplex virus DNA in serum and oral secretions during acute recurrent herpes labialis", Journal of dermatology, vol. 29, no. 7: JAPANESE DERMATOLOGICAL ASSOC, pp. 404–410, 2002. Abstract
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Youssef, B., S. Khattab, T. A. Mageed, N. Hamdy, and S. ElGama, "DNA-based Key Generation and Exchange", Scientific Journal of Computer Science , vol. 38, issue 6/2001, pp. 16, 2011.
Youssef, A. F. A., Y. M. Issa, O. R. Shehab, and H. Sherief, "Determination of Microgram Amounts of Copper in Real Samples Using New Modified Carbon Paste Electrode", International Journal of Electrochemical Science, vol. 10, pp. 4752-4769, 2015.
Youssef, A. S., H. Parkman, and S. Nagar, "Domperidone interacts with pioglitazone but not with ondansetron via common CYP metabolism in vitro.", Xenobiotica, vol. 44, issue 9, pp. 792-803, 2014.
Youssef, R. M., D. Mahgoub, H. M. Mashaly, E. El-Nabarawy, N. Samir, and M. El-Mofty, "Different narrowband UVB dosage regimens in dark skinned psoriatics: a preliminary study", Photodermatology, photoimmunology & photomedicine, vol. 24, no. 5: Wiley Online Library, pp. 256–259, 2008. Abstract
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Youssri, E., A. Dakrory, and A. Abu-Taira, Development Of Bubulcus Ibis Sense Organs, , 2014.
Yu, J., G. Walther, A. D. Van Diepeningen, A. H. G. G. van den Ende, R. - Y. Li, T. A. A. Moussa, O. A. Almaghrabi, and G. S. de Hoog, "DNA barcoding of clinically relevant Cunninghamella species", Medical mycology, vol. 53, no. 2: Oxford University Press, pp. 99–106, 2015. Abstractmed_mycol-2015-yu-99-106.pdf

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Yu, Q., I. Abdallah, H. Han, M. Owen, and S. Powles, "Distinct non-target site mechanisms endow resistance to glyphosate, ACCase and ALS-inhibiting herbicides in multiple herbicide-resistant Lolium rigidum", Planta, vol. 230, no. 4: Springer, pp. 713–723, 2009. Abstract
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Z.H.Osman, and E. L. A. Morshedy, "Digital Computation of Switching Transients in Three Phase Radial Systems", Proc. Of Middle East Power System Conference Mepcon'89, Egypt, Jan 1989.
Zaazaa, H. E., S. S. Abbas, H. A. M. Essam, and M. G. El-Bardicy, "Development and validation of stability- indicating methods for determination of Torsemide .", Bull. Chem. Soc. Ethiop, vol. 30, issue 1, pp. 13--25, 2016.
Zaazaa, H. E., E. S. Elzanfaly, A. T. Soudi, and M. Y. Salem, "Development and validation of an ultraperformance liquid chromatography method coupled with tandem mass spectrometry for determination of alizapride in human plasma", RSC Advances, vol. 5, pp. 76377–76382, 2015.
Zaazaa, H. E., S. S. Abbas, M. Abdelkawy, and M. M. Abdelrahman, "Determination of Dropropizine in Presence of its Oxidative Degradates by Four Different Techniques", Bull. Fac. Pharm. Cairo Univ., vol. 46, issue 1, pp. 191-204, 2008.
Zaazaa, A., A. J. Bella, and R. Shamloul, "Drug Addiction and Sexual Dysfunction", Endocrinology and metabolism clinics of North America, vol. 42, no. 3: Elsevier, pp. 585–592, 2013. Abstract
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Zafar, A., M. Raheel, M. Q. Zafar, K. S. Nisar, M. S. Osman, R. N. Mohamed, and A. Elfasakhany, "Dynamics of Different Nonlinearities to the Perturbed Nonlinear Schrödinger Equation via Solitary Wave Solutions with Numerical Simulation", fractal and fractional, vol. 5, pp. 213, 2021.
Zafer, M. M., M. H. Al-Agamy, H. A. El-Mahallawy, M. A. Amin, and S. El Din Ashour, "Dissemination of VIM-2 producing Pseudomonas aeruginosa ST233 at tertiary care hospitals in Egypt.", BMC infectious diseases, vol. 15, pp. 122, 2015. Abstract

BACKGROUND: Pseudomonas aeruginosa is an important nosocomial pathogen, commonly causing infections in immunocompromised patients. The aim of this study was to examine the genetic relatedness of metallo-beta-lactamase (MBL) producing carbapenem resistant Pseudomonas aeruginosa clinical isolates collected from 2 tertiary hospitals in Cairo, Egypt using Multi Locus sequence typing (MLST).

METHODS: Phenotypic and genotypic detection of metallo-beta-lactamase for forty eight non-duplicate carbapenem resistant P. aeruginosa isolates were carried out. DNA sequencing and MLST were done.

RESULTS: The bla VIM-2 gene was highly prevalent (28/33 strains, 85%) among 33 MBL-positive P.aeruginosa isolates. MLST revealed eleven distinct Sequence Types (STs). A unique ST233 clone producing VIM-2 was documented by MLST in P.aeruginosa strains isolated from Cairo university hospitals. The high prevalence of VIM-2 producers was not due to the spread of a single clone.

CONCLUSIONS: The findings of the present study clearly demonstrate that clones of VIM-2 positive in our hospitals are different from those reported from European studies. Prevalence of VIM-2 producers of the same clone was detected from surgical specimens whereas oncology related specimens were showing diverse clones.

Zaghlol, H. S., "Does hair provide a permanent marker for diazepam, amitryptline or haloperidol intake in Albino Rats?", The Egyptian Journal of Forensic Sciences and Applied Toxicology, vol. 1, issue 1, pp. 169-185, 2001.
Zaghlol, H. S., M.Hamdy, D. Sabry, and A.Moawad, differentiation between menstrual and peripheral blood stains , , 2017. abstract.pdf
Zaghloul, M. S., E. Eldebawy, S. Ahmed, H. Ammar, E. Khalil, H. A. Rahman, W. Zekri, H. E. Zomor, H. Taha, and A. Elnashar, "Does primary tumor volume predict the outcome of pediatric nasopharyngeal carcinoma?: A prospective single-arm study using neoadjuvant chemotherapy and concomitant chemotherapy with intensity modulated radiotherapy.", Asia-Pacific journal of clinical oncology, vol. 12, issue 2, pp. 143-50, 2016 Jun. Abstract
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Zaghloul, M. S., "Does Schistosoma-associated bladder cancer differ from urothelial cancer? Proof from the laboratory and clinic.", Cancer genetics and cytogenetics, vol. 180, issue 2, pp. 160-2, 2008 Jan 15. Abstract
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