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1991
Ead, H. A., Hassaneen H. M., Abdallah M. A., & Mousa H. A. (1991).  Synthesis and Biological Activitis of Some Pyrrolopyrazoles and 2-Pyrazolines.. Arch. Pharm.. 324, 35-37.
F. M. Abdelrazek, & G.A.M.Nawwar (1991).  Synthesis and molluscicidal activity of some furo[2,3-d]pyrimidine and furo[2,3-b]pyridine derivatives.. Egypt. J. Chem.. 34(6), 559-564.
Abou-Eleinen, G., Ismail N. A., El-Rahman A. H. A., & Eldin M. A. A. (1991).  Synthesis and redox characteristics of 2-arylhydrazono-2-cyanothioacetamides in non-aqueous medium. Egypt J. Pharm. Sci.. 32, 613.
Hassaneen, H. M., Shawali A. S., Elwan N. M., & Ibrahim A. A. (1991).  Synthesis of C-(2-Furyl)-N-(4-Nitrophenyl)Methanohydrazonyl Bromide. Reactions with Nucleophiles and Active Methylene compounds.. Arch. Pharm. Res.. 14, 266-270.
mohammad mohammad alsehimy (1991).  SYSTEMIC EFFECTS OF PERIODONTAL LIGAMENT ANAETHESIA : CLINICAL AND EXPERIMENTAL STUDY . . THE NEW EGYPTIAN JOURNAL OF MEDICINE . 5, 756-760 . Abstract

ABSTRACT :
Twenty-five human volunteers were used in this study to examine the systemic effects following periodontal ligament injection ( PDL ) using a citoject high pressure syringe ( Bayer , Leverkusen , W. Germany ) . A parallel study was carried out on 5 dogs . The hypothysis that pressure created during intraligamental injection is the causative factor in attaining anaesthesia was tested and evaluated . The results of this study indicated that PDL injection leads to extremely rapid absorption of injected solutions and that epinephrine may cause rapid but transient periods of hypotension and tachycardia that are clinically significant . It was also shown that PDL anaesthesia was not due to intraligamental pressure per se but due to the effect of the anaesthetic agent on sensory nerves .

Sayyouh, M. H., & Al-Blehed M. S. (1991).  Tertiary Saudi oil recovery by alkaline flooding - Energy development approach. l4th Annual International Conference of Energy Economists, IAEE.
Tymieniecka, &(editor) A. - T. (1991).  TheMethodological Foundations of Phenomenological Aesthetics,. Analecta Husserliana.
Rizk, M. M., Dzyadyk V. K., & Basov A. M. (1991).  Theory And Application of Iterative Approximation Method And its Comparison With Methods of Type Runge-Kutta.. Nauk Ukrain. SSR. Inst. Math., Kiev, Preprint. 39, 58.
Rizk, M. M. (1991).  Theory And Application of Iterative Approximation Method, And its Comparison with Methods of Type Runge-Kutta.
Gaber, M., Mabrouk H. E., & Mounir M. (1991).  Thermochemical and electrical properties of Zincon complexes with Mg(II), Ca(II), Sr(II), Ba(II) and Bi(III). Thermochimica Acta . 186(1), 89-95.abstract_191.docx
Mostafa, F. M., Abdel-Kader M. M., Arafat S. S., & Kandeel E. M. (1991).  Thermochromic phase transitions in two aromatic tetrachlorocuprates. Physica Scripta. 43, 627-629.
[Anonymous] (1991).  Time Characteristics of Fluorescence from CO2 Laser - Induced Plasma L. Z. Ismail International Conf. on Phenomena in Ionized Gases , Ciocco-Italy, July.
Megahed, S. M. (1991).  Topological and Kinematical Study of Tree Structure Robot Arms: Symbolic Computation Technique . Int. J. of Robotics & Autonomous Systems, Elsevier Science Publisher B.V. (North-Holland). 7, 27-35.
Omara, F. A., & Ghonaimy M. R. A. (1991).  Transputer & Occam. Comp. Sc., PES, and DEM., March 1991. 93 – 110.
S.Thabet, M.Abdel-Badie, A.L.Aboul-Nasr, A.A.Tantawi, & M.M.El-Tamamy (1991).  Ultrasonographic and clinical evaluation of pregnancy associated IUD. . Sci. Med. J. Cairo Med. Syndicate. 3(4), 219-237.
Abdou O. Abdelhamid, Khalifa F. A., & El-Shiaty F. H. H. (1991).  Utility of 2-nitrophenylglyoxal-2-arylhydrazones in the synthesis of some heterocycle systems. Egypt. J. Pharm. Sci.. 32, 331.
M.El-Said (1991).  A variational Approach for Modal Analysis of Double Clad Optical Fiber Line. Journal of Engineering and Applied Sciences. 38(5), 985-994.
El-Hadidi, M. T. (1991).  Voice/Data Integration: Concepts, Modeling and Analysis. Eighth International Conference on Mathematical and Computer Modelling.
Helmi, F. M. (1991).  Weathering of some marble from Egypt. 2nd International conference for conservation of monuments in Mediterranean basin.
[Anonymous] (1991).  Women, Water and Childhood Diarrhoea: Case Study of an Egyptian Village. United Nations Conference on Environment & Development.
Mona, S. S. (1991).  Work related diseases. Egyptian J of Occupational Medicine. Supplement(Supplement), 75-86.
Metwally, N. (1991).  Zwischen Manierismus und Moralisierung. Zum deutschen Epigramm im 17. und 18. Jahrhundert.. Kairoer Germanistische Studien. 6(1991), 239-260.zwischen_manierismus_und_moralisierung.pdf
Mohareb, R. M., Abdel-Sayed N. I., & Sherif S. M. (1991).  α-Bromoacetoacetanilides in heterocyclic synthesis: A convenient synthesis of polyfunctionally substituted 2,3-dihydrothiazole, pyridin-2-one, 1,2,3-triazine, oxazolo[3,4-b]pyridine and pyrazolo[3,4-b]pyridine derivatives .
[Anonymous] (1991).  أصل الدين، ترجمة كتاب فويرباخ.
[Anonymous] (1991).  الأخلاق الهيجلية: ترجمة كتاب وولش ودراسة.
مهنا, غراء (1991).  الرمز فى الحكاية الشعبية. مجلة الفنون الشعبية. عدد 34(ديسمبر 1991), 24-34.
[Anonymous] (1991).  السعادة والإسعاد فى السيرة الإنسانية، دراسة و"تحقيق".
[Anonymous] (1991).  المواد السمعية والبصرية في المكتبات الأكاديمية بالقاهرة : دراسة ميدانية. Abstract

تهدف الدراسة إلى رصد وتحليل وضع المواد السمعية والبصرية في المكتبات الأكاديمية بالقاهرة الكبرى من حيث التنظيم الاداري ، والتزويد ، والفهرسة والتصنيف ، والحفظ والصيانة،والخدمة المكتبية . وقد اعتمدت في إجراء الدراسة على المنهج المسحي مع اعداد قائمة مراجعة كأداة في جمع البيانات .وقد خرجت الدراسة بتائج عديدة من أبزها ان نسبة اقتناء المواد السمعية والبصرية في المكتبا الأكاديمية محل البحث قد بلغت 26.5% .كما تعاني المكتبات الاكاديمية فيما يختص بمقتياتها من تلك المواد من أوجة قصور عديدة تتمثلت في الإعداد البليوجرافي لها والخدمات المكتبية

[Anonymous] (1991).  تطور إنتاجية فدان القمح في مصر. مجلة مصر المعاصرة. 452,
[Anonymous] (1991).  دراسات فى تاريخ العلوم عند العرب.
Amin, M. Y., & et al (1991).  “Dynamic of shock waves in Contracting cloud”. Astrophysics and space Science. 185, 1995.
Aboul Ela, & Aly M. F. (1991).   Albian Fauna of Gebel Manzour, Maghara area, North Sinai, Egypt. . J. African Earth Sciences. 13(2), 201-220 .
Bolbol, A. E., & El-Shazly M. O. (1991).  Acquired prognathism in a horse. Assiut Veterinary Medical Journal (Egypt). Abstract
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A.A, H., M.A A. - H., B E. - K., El- Nady E., M.A A., M A. - H., et al. (1991).  Adenohypophyseal activity in relation to suprarenal function in tuberculosis. Kikkaku (Japan). 67(5), 363-367.
Bishay, F. K., Nassar S., & Abdallah Z. (1991).  Agricultural price policies in Egypt. Vol. 2 (Arabic ed.). FAO Economic and Social Development Paper (FAO) eng no. 91/2. Abstract
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El-Deeb, M. H., Abusteit E. O., Shalaby A. A., Kishk E. T., & Khafaga H. S. (1991).  Agromanagement saltbush, Atriplex nummularia, under saline conditions [Egypt]. The Desert Institute Bulletin. 41, Abstract
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Shabana, E. F., Khalil Z., Kobbia I. A., & Zaki F. T. (1991).  Amino acid content and transminases activities in Anabaena oryzae and Nostoc muscorum as affected by some pesticides. Egyptian Journal of Physiological Sciences (Egypt). Abstract
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[Anonymous] (1991).  "Application of Linguistic Fuzzy rules in a Power System Stabilizer", presented to. COPIMERA XIII, Mexico. 29. Abstract
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Jones, C. (1991).  Applied {Software} {Measurement}: assuring productivity and quality. Abstract
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Megahed, S. M. (1991).  Automatic algebraic computation of basic kinematic equations of tree structure robot arms: application to human arms. Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 205, 135–143. Abstract
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