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1991
El-Desoky, M. M., Ahmed M. A., & Higazy H. H. (1991).  Photoconductivity and dielectric constant studies of some organic complexes. Thermochimica Acta. 186(1), 103 - 109. 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. (1991).  Synthesis of some new pyrazolo[1,5-a]pyrimidines and imidazo[2,3-c]pyrazoles. Pharmazie. 46(5), 352 - 353. AbstractWebsite
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Afifi, R. Y., M B., & AF M. (1991).  In vitro mononuclear giant cell formation (MNGC) in breast diseases. The twenty seventh annual meeting of the American Society of Clinical Oncology.
Sabry, R. (1991).  Des inserts. La fonction des écrits insérés en contexte romanesque. Texte et contexte.
Mehanna, G. (1991).  Les connotations socio-politiques de la végétation dans la poésie maghrébine d'expression française. Texte et Contexte.
N.A.El-Dib (1991).  Drug resistant malaria among Sudanese in Taif, Saudi Arabia. . Third Annual Kasr Al Ainy Medical Congress.
N.A.El-Dib, O E. - M., H.H.El-Rahimy, M.K.Sobhy, & A.I.El-Adawy (1991).  Intestinal parasitic infection in Yemeni labourers in Taif, Saudi Arabia. . Third Kasr Al Ainy Medica Congress.
Abdelrahman, M. M., & Al-bahi A. M. (1991).  Optimal Smooth and Orthogonal Grid Generation. tenth International Symposium on Air Breathing Engines, ISABE..
Soliman, Reda, I., Youssef S., & Refai M. (1991).   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.. 51, , 387-400 .effect_of_factors_iii_ultracorn.pdf
Badawy, W. A., & Kh.M.Ismail (1991).   "Corrosion and Passivation of Ti, Ta and Zr in Nitric Acid Solutions" . ISE , 42 nd Meeting , Aug.25-30 ,1991, Montreux, Switzerland. 42, 102.
. Saleh, M. A., El-Baroty G. S., Afify, Nehal A., & Abd El- Reheim E. (1991).   Receptor –bound toxicants as a biomarker for environmental pollutants, . CPE VIII, Chemistry for the protection of Environment, Polytechnical University Lubin, Poland , 16-19 Sep..
Fahmy, M. M. (1991).   Scanning electron microscopy on the 3rd. larval stage of Cephalopina titil¬lator fly (Diptera: Oestridae). . J. Drug Res. Egypt.. 20 (1&2),  65-73..
El-Enbaawy, M., Soliman R., & Refai M. (1991).   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.. 54, , 401-406 .studies_on_factors__iv_effect_of_pind_avi.pdf
El-Enbaawy, M., Soliman R., & Refai M. (1991).   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.. 54, , 401-406 .studies_on_factors__iv_effect_of_pind_avi.pdf
M.Harb, H., & Moharram H. M. (1991).   “A new algorithm for Database Design”. Proceedings of the 16th International Conference for Statistics and Computer Science, Ain Shams Univ., Cairo, PP. 253-279.
69. Farag, R. S., Abo Raya, El-Desoky G. E., & El-Baroty G. S. (1991).  ). Safety evaluation of thyme and clove essential oils as natural antioxidants. African J. Sci. 18: 169-176.. African J. Sci. . 18, 169-176.
Mona El-Enbaawy; Soliman, R.; Refai, M. (1991).  ): Studies on factors influencing immune responses in chicken .IV.-Effect of PIND-AVI on phagocytic activities of chicken macrophages in vitro. T. he 20th Arab Vet,Med, Cong.,J.Egypt. Vet.Med.Ass.,.. 51(1/2), 401-408.
Abousteit, E. O., & S.A.Shehata (1991).  .Critical period of weed competition in fall planted potatoes (Solanum tuberosum, L). ). Bull. fac.of Agric., Univ. of Cairo, . 4(43), 1207-1220.
Mohareb, R. M., & Sherif S. M. (1991).  23. Heterocyclic synthesis with isothiocyanates: Synthesis of several new polyfunctionally substituted thiophene, 4-thiazoline and thiazolidinione derivatives.
[Anonymous] (1991).  30. Characterizations of beta, binomial and Poison distributions .
Afifi, R. Y., & Baum M. (1991).  Adjuvant endocrine therapy (chapter 23), in Medical Management of Breast Cancer. Management of Breast Cancer.
Harby, H., El-Jakee J., & Refai M. (1991).  The aetiology and diagnosis of mastitis in Oman. J. Egypt. . Vet. Med. Ass.. 51, , 783-795 .the_aetiology_of_mastitis_in_oman.pdf
A.H., E. - D., E.O.Abusteit, Shalaby A. A., Kishk E. T., & Khafaga H. S. (1991).  Agro management of salthbush (Atriplex nummularia) under saline conditions. 2, 353-370.
E.A.; El-Kashoury, M.A., A. M.; El- Fishawy, & Soliman F. M. (1991).  Alkaloids, Coumarins and Lignans of the genus Haplophyllum . Bull. Fac. Pharm., Cairo Univ.. 29, 1.
A.M., E. - F., El-Kashoury E. A., Abdel-Kawy M. A., & F.M S. (1991).  Alkaloids, Coumarins and lignans of the genus Haplophyllum, (Review article) . Bull Fac .pharm. Cairo Univ.. 29, 1.
Ahmed, N. A., Rawi S. M., Abou El-Ala K. S., & El-Behary ‎M. H. (1991).  The alteration of some rat brain excitatory and inhibitory ‎amino acids induced by the chronic treatment of dieldrin.‎. J. Egypt. Ger. Soc. Zool.. 6, 349-359.‎.
Aboul-Enein, M. I., Aboul-Enein A. M., Issa S. I., Abdel-Moean N., & Abdel-Aziz S. (1991).  The antileukemic effect of willow plant extracts: An in-vitro study. Egypt. J. Haematol., . 16(3), 225-234.
Badawy, W. A., Momtaz R. S., Afify H. H., & El-Giar E. M. (1991).  "Antimony- Incorporated TiO2 Thin Films : Preparation , Optical and Solid State Characteristics". . J. Materials Science , Materials in Electronics. 2, 212.
Sayyouh, M. H., & Al-Blehed M. S. (1991).  Application of EOR methods to Saudi oil fields. J. King Saud University (Engineering Sciences). 4(1), appl.saudi_to_eor.pdf
El-Batanony, M., Sayyouh M. H., & Abbas E. (1991).  Application of improved recovery of crude Oil by chemical solutions. J. Petroleum Research Institute.
Rizk, M. M. (1991).  The Approximate Solution of Systems of Ordinary Differential Equations By Means of The Approximation – Iteration Method in a Complex Domain.. Studies in the theory of the approximation of functions, Akad. Nauk Ukrain. SSR. Inst. Mat. ,Kiev. 72-85 .
Rizk, M. M., & Zaher S. L. (1991).  Approximate Solutions of Nonlinear Integro-Differential Equations on Complex Domain.. Comput.-Math.-Applic. Journal . 29(10), 69-78 .
Megahed, S. M. (1991).  Automatic Algebraic Computation of Basic Kinematic equations of tree Structure Robot Arms: Application to Human Arms . Int. J. of Engineering in Medicine, Part H, Imeche MEP Limited. 205, 135-143.
Hefny, M. M., Mogoda A. S., & El-Basiouny M. S. (1991).  Behavior of the surface oxide film on antimony in alkaline solutions.. Indian J. Chem. Technol.. 29, 85.
Khalifa, F. A., Ismail N. A., Elghandour A. H. H., & Zohdi H. F. (1991).  Benzoin In Heterocyclic Synthesis: Synthesis and Reactions of 4-Cyano-2,3-diphenyl-2H-pyrolo-5-thione. Tetrahedron. 47, 8243.
Fawzy, S., El-Sharouni S. H., Haroun H. S. W., & Shona S. I. (1991).  Blood supply of the human skin.. Egypt J Anat. 14(4), 1-15.
Mohareb, R. M., Abdel-Sayed N. I., & Sherif S. M. (1991).  Bromoacetoacetanilide In Heterocyclic Synthesis: A Convenient Synthesis of Polyfunctionally Substituted 2,3-Dihydrothiazole, Pyridine-2-one, 1,2,3-Thiazine, Oxazolo[3,4-b]pyridine and Pyrazolo[3,4-b]pyridine Derivatives. Phosphorous, Sulfur and Silicon. 63,, 119 .
[Anonymous] (1991).  Campylobacter Jejuni associated with diarrhoea of pet animals and infants. Vet. Med. J. Giza . 39 , 81-89..
Gaafar, K., Elsayed N. K., Khalek L. A. R., & Caram S. H. (1991).  Changes in some serum and histoenzymes in methyl alcohol hepatotoxicity in rats. the egyptian journal of histology. 14, 385-393. Abstractchanges_in_some_serum.pdf

Male albino rats were given 2,4 and 6% methyl alcohol solution as drinking water for 4 weeks. Liver tissue was examined for histopathologic and histochemical changes in some liver enzymes. Changes in some serum enzymes and glucose level were also assayed. The histopathologic changes in the liver were in the form of venous congestion, increased influx of inflammatory cells, bile duct proliferation, fatty degeneration and necrosis of liver parenchyma.

Succinic dehydrogenase (SDH) and membrane adenosine triphosphatase (ATPase) activities increased whereas lactate dehydrogenase (LDH) activity decreased indicating enhanced aerobic glycolysis and active phosphorylation and inhibition of anaeobic glycolysis. This was accompanied by hyperglycaemia on the first week followed by drop of glucose to normal value sug-gesting its increased utilization as energy source to offset the effects of the toxin.

Acid phosphatase (ACP) activity increased in the liver parenchyma. Alkaline phosphatase (ALP) was also activated while membrane ATPase was inhibited revealing disturbances in membrane transport processes. Liver dysfunction was also confirmed by increased activity of the serum enzymes gamma glutamyl transferase (GGT), glutamic oxaloacetate transaminase (GOT), glutamic pyruvate transaninase (GPT) and LDH.

Shehata, S. A., EL-Sayed S. F., & Fayad A. N. (1991).  Chemical weed control in potato fields. . J. Agron., Special . 103-116.
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