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Elmahdy, H. N., M. H. Gheith, and A. A. Fahmy, "How to get benefits from Artificial Intelligence in the Countries of Arabic Co- operation Counsel", The Association of the Inhabitance of in the Countries of Arabic Co-operation Counsel, Cairo, Mar. 11-12, 1990.
el-Magied, M. A. M., E. M. Hassan, and M. A. T. El-Akel, "High protein cookies made with pigeon pea and sorghum blends", J. Agric. Res. & Dev.,(March)., vol. 13, no. I, 1991. Abstract
Afify, M. H., E. H. M. Galal, and S. M., "Histopathological changes of rats livers fed on hyper-cholesterolemic diets.", Egypt J. Food Sci., vol. 21, no. 1, pp. 97–101, 1991. Abstract
Singh, D. P., M. A. Harith, V. Palleschi, and M. Vaselli, "Hydrodynamic Effects on Thermalisation of Dense Core with Surrounding Corona in Laser-Imploded Z-Layered Plasma Target", Contributions to Plasma Physics, vol. 31, no. 4: Wiley Online Library, pp. 423–427, 1991. Abstract
Fama, F., M. A. Harith, V. Palleschi, A. Salvetti, D. P. Singh, M. Vaselli, G. V. Dreiden, Y. I. Ostrovsky, and I. V. Semenova, "Hydrodynamics of laser-produced shock waves in water: Reflection and transmission measurements", Journal of applied physics, vol. 69, no. 3: AIP Publishing, pp. 1660–1665, 1991. Abstract
M M Metwally, IA Abd El Gawad, H. E. M. M. S. M., "The hypocholesterolaemic effect of butter milk .” III- The effect of orotic acid, buffaloes and cows butter milk on rats serum cholesterol and lipids.", Fayoum Journal of Agricultural Research and Development (EGYPT), vol. 5, issue 1, 1991. Abstract
El-Ayouby, S. M., M. Abdel-Ghani, M. E. Hatem, M. S. S. Abdou, Y. A. Farag, and M. N. H. Shalabi, "Haemophilus Somnus infection as an etiological agent for reproductive disorders in cows and buffaloes", 3rd Ann. Congr. Egyptian Soc. Anim. Reprod. Fert., pp. 177, 1991.
Zaghloul AM, A. B. Frederic, S. S. Mona, and R. S. Randa, "Health hazards among workers in flour milling industry", Egyptian J of Occupational Medicine, vol. 16, issue 2, pp. 217-226, 1991.
SA, Y., R. A, A. N. A., and A. MD, "Hemodynamic alterations induced by toxic level of sodium taurocholate. ", Dtsch Tierarztl Wochenschr. , vol. 98(2):, pp. 56-60., 1991.
SA, Y., R. A, A. N. A., and A. MD, "Hemodynamic alterations induced by toxic level of sodium taurocholate. ", Dtsch Tierarztl Wochenschr, vol. 98(2):, pp. 56-60., 1991.
Zohdi, H. F., F. A. Khalifa, A. O. Abdelhamide, and A.A.El-Tourgman, "Heterocycles from Nitrile Oxides: Synthesis of some New Isoxazoles, pyrrolidino[3,4-d]isoxazoles and Isoxazolo[3,4-d]pyridazines", J. Chem. Res., pp. (S)322, 1991.
Zohdi, H. F., F. A. Khalifa, A. O. Abdelhamid, and A. El-Tourgman, "Heterocycles from Nitrileoxides: Synthesis of some new isoxazoles, pyrrolo[3,4-d]isoxazoles and isoxazolo[3,4-d]pyridazines", J. Chem. Res. , pp. (S), 322 , 1991.
F. M. Abdelrazek, A.M.Farag, and A.M.Torgoman, "Heterocyclic synthesis with nitriles: Synthesis of some novel pyrazolo[1,5-a]pyrimidine pyrazolo[3,4-c]pyridazine and pyrazolo[3,4-c]azepinone derivatives.", International J. Chem., vol. 2, issue 2, pp. 55-58, 1991.
Gaafar, K., A. R. laila khalek, N. K.El-Sayed, and S. H. Karam, "Histoenzyme changes in chronic methyl alcohol retinotoxicity in rats", the egyptian journal of histology, vol. 14, pp. 377-384, 1991. Abstracthistoenzyme_changes.pdf

Male albino rats were administered methyl alcohol in their drinking water as 2,4 ad 6% solutions for four weeks. Methyl alcohol concentration was determind in the sera of rats after 1,2 and 4 weeks and was found too increase significantly.

Retinal tissue was removed at similar time intervals for histopathologic and histoenzymologic examination. The retinal damage was directed at the photoreceptors primarily and the neuronal elements. A significant finding was the loss of outer layers of the retina after prolonged methyl alcohol intake. Succinic dehydrogenase (SDH) increased and NAD-linked lactate dehydrogenase (LDH) decreased indicating enhanced aerobic glycolysis and depressed anaerobic glycolysis. Acid phosphatase (ACP), alkaline phosphatase (ALP) and adenosine triphosphatase (ATPase) activities were notably increased in the pigment epithelium, choroid and sites of enzyme activities in the retina. The increase in ALP and ATPase in the pigment epithelium may be attributable to the increased demands of the retina for metabolic exchange and reflect modified membrane permeability induced by the toxin.

El-Mawla, N. M. G., A. S. Ibrahim, S. EL-Said, A. A.Zaki, M. M.Saber, A.I.El-Khodary, Hussein.M.Khalid, M. G. Rabab, H. M.El-Zawahri, Abdel-Wareth, et al., "Hodgkin's disease: A clinico-epidemiological study of 587 cases", J. Egypt. Nat, Cancer Inst., vol. 5, issue 2, pp. 393-399,, 1991.
Khalil, M. W., and A. M. A. Rahim, "Hydrogen Evolution Reaction on Titanium and Oxide-Covered Titanium Electrodes", Mat.-wiss. u. Werkstofftech. , vol. 22, pp. 390-395, 1991.
Youssef, S. A., A. Ramadan, N. A. Afifi, and M. D. Aziz, "Haemodynamic alterations induced by toxic level of sodium taurocholate.", DTW. Deutsche tierarztliche Wochenschrift, vol. 98, issue 2, pp. 56-60, 1991 Feb. Abstract

Haemodynamic effects of sodium taurocholate (S.T.) were studied on isolated guinea pig's auricles, rabbit's heart, rabbit's aortic strip, guinea pig's tracheal chain as well as the blood pressure and ECG pattern changes in pentobarbital anaesthetized dogs. S.T. induced significant negative inotropic and chronotropic effects on the isolated auricles of guinea pig's especially in higher concentrations. Using isolated rabbit's heart, the negative inotropic and chronotropic effects induced by S.T. were found to be depending on the concentration. Cardio-inhibitory actions of the salt are not due to either cholinergic beta 1-adrenergic blocking effect or nicotine like activity. S.T. in all tested concentrations had no effect on the contractile response of isolated rabbit's aortic strip or guinea pig's tracheal chain and did not prevent the contractile response induced by noradrenaline and histamine. In anaesthetized dogs, i.v. injections of the salt in a dose of 30 mg/kg b. wt. produced a significant decrease in systolic and diastolic pressure, but lower doses induced no significant changes. A dose of 30 mg/kg b. wt. of the salt potentiates the decrease in systolic and diastolic pressure when coadministered with the neuromuscular blocking agent, atracurium besylate. Atropine, propranolol and phentolamine did not alter the hypotensive effect of S.T. (neither cholinergic nor beta 1-adrenergic blocking effect). The electrocardiographic pattern induced by S.T. (20-30 mg/kg b. wt.) in dogs were mainly characterized by decrease in heart rate and prolongation of P-T interval.

Youssef, N. F., G. B. Hanna, and M. F. Abadir, "Humidity properties of rigid foam materials used in building ", ISES ,Solar World Congress , Denver, Colorado, US, August, 1991.
Omara, F. A., "High Performance Store – And – Forward Packet Routing Communication Network for Concurrent Computers", The Eighth National Radio Science (NRSC’91), Cairo, Egypt, pp. C13 – 8 C13, February, 1991.
Bolbol, A. E., El-Shazly, and M.O., "Habronaemiasis in equine prepuce.", 13th. Symp. on the biological aspects of Saudi Arabia, King Saud University, Buraidah, Gassim,KSA., 1992. Abstract
Darwish, M. A., S. A. Issa, A. M. Aziz, N. M. Darwish, and A. H. Soliman, "Hepatitis C and B viruses, and their association with hepatocellular carcinoma in Egypt.", The Journal of the Egyptian Public Health Association, vol. 68, no. 1-2, pp. 1–9, 1992. Abstract
Abelrazek, F. M., and A. -latif.M. Salah, "Heterocyclic syntheis with nitriles : Synthesis of some novel thiophene and thieno(2,3-d) pyrimidine derivatives", Phosph. Sulf. and Silicon, vol. 71, pp. 93, 1992.