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1991
Th.M.El-Sherbini, and A. A. Farrag, Core-excited doublet and quartet states in the sodium isoelectronic sequence, , vol. 46, issue 5, pp. 473 - 475, 1991. AbstractWebsite
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Osman, T. A., Z. S. Safar, and M. O. A. Mokhtar, Design of annular recess hydrostatic thrust bearing under dynamic loading, , vol. 24, issue 3, pp. 137 - 141, 1991. AbstractWebsite
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El-Sayed, B. A., S. M. Shaaban, M. M. El-Desoky, and M. A. Ahmed, "The electrical conductivity of some azine compounds", Journal of Materials Science: Materials in Electronics, vol. 2, issue 1: Kluwer Academic Publishers, pp. 11 - 13, 1991. AbstractWebsite

Correlation of the molecular structure and thermal study of the electrical conductivity of benzaldazine (BA) and its NO 2-derivatives were carried out. The values of the activation energies, obtained from the electrical conductivity measurements, as well as the energy gaps calculated from ultra violet (u.v.) and visible spectra obtained either in liquid or in solid forms indicate that all compounds behave like a semiconducting material. Both nπ*′s and ππ*′s were found to be the main sources participatiog in the cooduction processes. © 1991 Chapman and Hall Ltd.

Abdelrahman, E. M., A. Tealeb, and H. A. Ahmed, "Gravity map of Kalabsha area, northwest of Aswan Lake, and its structural significance", Journal of Geodynamics, vol. 14, issue 1-4, pp. 125 - 135, 1991. AbstractWebsite
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Th.M.El-Sherbini, and M. M. Arrubban, Laser transitions in the boron-like IONS of NIII, OIV and FV, , vol. 31, issue 6, pp. 595 - 597, 1991. AbstractWebsite
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Abdelrahman, E. M., A. I. Bayoumi, and H. M. El-Araby, "A least-squares minimization approach to invert gravity data", Geophysics, vol. 56, issue 1, pp. 115 - 118, 1991. AbstractWebsite
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Azza A, M., and A. Sawsan M, Method of determination of the activity-concentration of neomycin sulphate, , 1991. Abstract
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Moustafa, A. A., S. M. Amer, and N. K. Ramadan, Method of determination of the activity-concentration of neomycin sulphate, Egypt, , vol. 32, pp. 263 - 274, 1991. Abstract
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Fattah, A. G., P.Voisin, and L. El-Nadi, "Optical Investigation of InGaAs/InP Strained Multiquantium Well", Second Workshop on Plasm and Laser Technology,Cairo, 1991.
El-Desoky, M. M., M. A. Ahmed, and H. H. Higazy, "Photoconductivity and dielectric constant studies of some organic complexes", Thermochimica Acta, vol. 186, issue 1, pp. 103 - 109, 1991. AbstractWebsite

The photocurrent of the two-dimensional system for (CH 2) 2 (NH 3) 2MCl 4 (M = Co 2+ and Cu 2+) as a function of temperature, exposure time and returning time has been measured. The activation energy and photoconductivity values were calculated. Saturation of the photoconducting current was reached after exposure for about 25 min. The photocurrents showed a decrease in value with increasing temperature. The dielectric constant was measured, also as a function of temperature and frequency and the electric dipole moment was calculated at different temperatures. © 1991.

Ghozlan, S. A. S., "Synthesis of some new pyrazolo[1,5-a]pyrimidines and imidazo[2,3-c]pyrazoles", Pharmazie, vol. 46, issue 5, pp. 352 - 353, 1991. AbstractWebsite
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Afifi, R. Y., B. M, and M. AF, "In vitro mononuclear giant cell formation (MNGC) in breast diseases", The twenty seventh annual meeting of the American Society of Clinical Oncology, Houston, 19 May, 1991.
Sabry, R., "Des inserts. La fonction des écrits insérés en contexte romanesque", Texte et contexte, Cairo University, 12-14 octobre, 1991.
Mehanna, G., "Les connotations socio-politiques de la végétation dans la poésie maghrébine d'expression française", Texte et Contexte, Cairo university, 12-14 octobbre, 1991.
N.A.El-Dib, "Drug resistant malaria among Sudanese in Taif, Saudi Arabia. ", Third Annual Kasr Al Ainy Medical Congress, Faculty of Medicine, Cairo University, Cairo, 12 March, 1991.
N.A.El-Dib, E. - M. O, H.H.El-Rahimy, M.K.Sobhy, and A.I.El-Adawy, "Intestinal parasitic infection in Yemeni labourers in Taif, Saudi Arabia. ", Third Kasr Al Ainy Medica Congress, Faculty of Medicine, Cairo University, Cairo, 12 March, 1991.
Abdelrahman, M. M., and A. M. Al-bahi, "Optimal Smooth and Orthogonal Grid Generation", tenth International Symposium on Air Breathing Engines, ISABE., Nottingham, England, United Kingdom, 1991, 1-6 September, 1991.
Soliman, Reda, I., S. Youssef, and M. Refai, " Studies on factors influencing immune response in chickens. III. Effect of ultracorn on chicken immune response to Newcastle disease virus vaccine. ", J. Egypt. Vet. Med. Ass., vol. 51, , pp. 387-400 , 1991. effect_of_factors_iii_ultracorn.pdf
Badawy, W. A., and Kh.M.Ismail, " "Corrosion and Passivation of Ti, Ta and Zr in Nitric Acid Solutions" ", ISE , 42 nd Meeting , Aug.25-30 ,1991, Montreux, Switzerland, vol. 42, pp. 102, 1991.
. Saleh, M. A., G. S. El-Baroty, A. Afify, Nehal, and E. Abd El- Reheim, " Receptor –bound toxicants as a biomarker for environmental pollutants, ", CPE VIII, Chemistry for the protection of Environment, Polytechnical University Lubin, Poland , 16-19 Sep., University Lubin, Poland , 16-19 Sep., CPE VIII, Chemistry for the protection of Environment, Polytechnical , 1991.
Fahmy, M. M., " Scanning electron microscopy on the 3rd. larval stage of Cephalopina titil¬lator fly (Diptera: Oestridae). ", J. Drug Res. Egypt., vol. 20 , issue 1&2, pp. 65-73., 1991.
El-Enbaawy, M., R. Soliman, and M. Refai, " Studies on factors influenzing immune response in chickens. IV. Effect of Pind-Avi on the phagocytic activities of chicken macrophages in vitro. ", J. Egypt. Vet. Med. Ass., vol. 54, , pp. 401-406 , 1991. studies_on_factors__iv_effect_of_pind_avi.pdf
El-Enbaawy, M., R. Soliman, and M. Refai, " Studies on factors influenzing immune response in chickens. IV. Effect of Pind-Avi on the phagocytic activities of chicken macrophages in vitro. ", J. Egypt. Vet. Med. Ass., vol. 54, , pp. 401-406 , 1991. studies_on_factors__iv_effect_of_pind_avi.pdf
M.Harb, H., and H. M. Moharram, “A new algorithm for Database Design”. Proceedings of the 16th International Conference for Statistics and Computer Science, Ain Shams Univ., Cairo, PP. 253-279, , 1991.
69. Farag, R. S., Abo Raya, G. E. El-Desoky, and G. S. El-Baroty, "). Safety evaluation of thyme and clove essential oils as natural antioxidants. African J. Sci. 18: 169-176.", African J. Sci. , vol. 18, pp. 169-176, 1991.
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