Publications

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1995
El-Gamal, M. A., A. S. O. Hassan, and H. L. Abdel-Malek, "A new approach for the selection of test points for fault diagnosis", Circuits and Systems, 1995. ISCAS'95., 1995 IEEE International Symposium on, vol. 3: IEEE, pp. 2019-2022, 1995. Abstract
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Khairy, M., M. Fikri, and A. Badawi, "A new digital correlator for bandlimited direct sequence spread spectrum signals", Global Telecommunications Conference, 1995. GLOBECOM'95., IEEE, vol. 3: IEEE, pp. 1894–1898, 1995. Abstract
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Khairy, M., M. Fikri, and A. Badawi, "A new technique for the correlation of bandlimited direct sequence spread spectrum signals", Personal, Indoor and Mobile Radio Communications, 1995. PIMRC'95. Wireless: Merging onto the Information Superhighway., Sixth IEEE International Symposium on, vol. 3: IEEE, pp. 1272, 1995. Abstract
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Hirsch, I. H., J. G. Moreno, M. A. Lotfi, and L. G. Gomella, "Noninsufflative laparoscopic access.", Journal of endourology, vol. 9, issue 6, pp. 483-6, 1995. Abstract

Standard laparoscopic surgery requires maintenance of the working cavity by continual carbon dioxide insufflation and exaggerated Trendelenburg positioning. Both cardiopulmonary and metabolic adverse effects may result from these maneuvers, which may be avoided by a gasless approach to laparoscopic surgery. We investigated a new mechanical retraction system designed to maintain exposure of either intraperitoneal or retroperitoneal contents in a gasless laparoscopic cavity and assessed its performance in both laparoscopic approaches. Gasless laparoscopic surgery was attempted using the Laprolift/Laparofan system for retroperitoneal procedures: left varicocele ligation (three cases), renal biopsy (one case), extraperitoneal pelvic lymph node dissection (one case), and intraperitoneal bilateral varicocelectomy (two cases). Renal biopsy and varicocelectomy were accomplished successfully with the gasless approach and with technical ease comparable to that of the standard insufflative laparoscopic approach. Gasless pelvic lymph node dissection and intraperitoneal varicocelectomy were converted to insufflative laparoscopic or open procedures because of inadequate exposure of the pelvic contents. This early experience with gasless laparoscopy indicates that it may best be reserved for retroperitoneal urologic procedures.

El-Batanouny, M. H., "Nonspecific Arteritis: A Special Clinicopathological Entity", Cardiovascular Surgery, vol. 3, no. 1001: Elsevier, pp. 104–104, 1995. Abstract
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1994
Gadallah, M. H., and H. E. A. Maraghy, "A NEW ALGORITHM FOR Discrete TOLERANCE Optimization", Computer Integrated Manufacturing and Technology: 4th Int'l Conference, Troy, 1994. a_new_algorithm_for_discrete_tolerance_optimization.pdf
Gadallah, M. H., and H. E. A. Marghy, "A NEW ALGORITHM FOR FORM TOLERANCE EVALUATION", Computer Integrated Manufacturing and Technology: 4th Int'l Conference, Troy, 1994. a_new_algorithm_for_form_tolerance_evaluation.pdf
Bayoumy, M., S. El-Hefnaw, O. Mahgoub, and A. El-Tobshy, "New techniques for battery charger and SOC estimation in photovoltaic hybrid power systems ", Sol. Energy Mater. Sol. Cells, vol. 35: Elsevier BV, pp. 509-514, 1994. AbstractWebsite

Two new techniques of the state of charge (SOC) estimation and battery charger are used to improve the lead-acid battery performance in a
photovoltaic (PV) diesel-generator hybrid power system. The ability to
estimate the SOC as a control signal is very important for system
management and controllers. A new technique for SOC estimation on-line
based on the pH meter probe uses is designed and implemented. The charging
current must be controlled to avoid the unnecessary overcharging states,
so a new battery charger has been designed based on a series pulse width
modulation (PWM) switch. The PWM technique is implemented using a
microcomputer as a system controller. The two new techniques improve the
performance of the battery operation in PV hybrid system, increase the
battery lifetime and decrease the maintenance and costs.

Hussain, S. M., S. M. Sherif, and M. M. Youssef, "New synthesis of poly functionally substituted 2-mercaptopyridines and fused pyridines ", Gazz. Chim. Ital, 124, 97, 1994.
Hussain, S. M., S. M. Sherif, and M. M. Youssef, "New Synthesis of Polyfunctionally Substituted 2-mercaptopyridines and Fused Pyridines", Gazzetta Chimica Italiana, vol. 124, issue --, pp. 97-101, 1994.
Sherif, S. M., A. M. Hussein, and Y. M. El-Kholy, Novel synthesis of imidazo[l,2-b]pyrazoles and their fused derivatives , , 1994.
Elansary, A. S., H. M. Chaudhry, and W. Silva, "Numerical and experimental investigation of transient pipe flow", Journal of Hydraulic Research, vol. 32, issue 5, pp. 689-706, 1994. Abstract

Two mathematical formulations for the computation of transient flow in piping systems are compared with experimental data. The formulations are: a four-equations fluid structure interaction model (FSI) that includes Poisson coupling, and a two-equations model for the fluid. Both models are solved numericaly using the method of characteristics. A partial-closure of a valve located at an intermediate point in a pipeline is used to create transient flow. The two-equations model computed the maximum pressure peak satisfactorily but the FSI model gave an overall better simulation. An unsteady-friction model, added to the FSI model, did not influence the final results significantly. The experimental procedures followed to obtain the valve characteristics and the pressure history along the pipeline are explained in detail. Excellent numerical results at the valve are obtained when experimental data is used to simulate the time …

Shamseldean, M. M., and M. M. Abd-Elgawad, "Natural occurrences of insect pathogenic nematodes (Rhabditida: Heterorhabditidae) in Egyptian soils", Afro-Asian Journal of Nematology,(England), vol. 4, issue (2), pp. 151-154, 1994. Abstract
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Rizk, M. S., Y. M. Issa, A. F. Shoukry, and M. M. Abdel-Aal, "New Ampicillin Selective Plastic Membrane and Coated Metal Electrodes Based on Ampicillinium Phosphotungstate Ion pair", Analytical Letters, vol. 27, pp. 1055–1065, 1994. Abstract
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Aboudan, M., Y. M. Issa, and A. F. Shoukry, "New plastic membrane ion-selective electrode for determination of trimethoprim", Journal of Chemical Technology and Biotechnology, vol. 61, pp. 31–35, 1994. Abstract
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Ibrahim, Y. A., A. H. M. Elwahy, and A. A. Abbas, "New synthesis of macrocyclic crown-formazans from pyruvic acid derivatives", Tetrahedron, vol. 50, no. 39: Pergamon, pp. 11489–11498, 1994. Abstract
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Ibrahim, Y. A., A. H. M. Elwahy, and A. A. Abbas, "New synthesis of macrocyclic crown-formazans from pyruvic acid derivatives", Tetrahedron, vol. 50, no. 39: Pergamon, pp. 11489–11498, 1994. Abstract
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