Mousa, M.A., A. M. A.,
"Electrical conduction in γ-irradiated and unirradiated zinc-iron ferrites",
Journal of Materials Science, vol. 23, no. 9: Kluwer Academic Publishers, pp. 3083-3087, 1988.
AbstractThe electrical conductivity of γ-irradiated and unirradiated finely-divided spinels of composition (Znx2+Fe1-x2+Fe23+)O42-was studied in a nitrogen atmosphere as a function of temperature. The results of both γ-irradiated and unirradiated ferrites with compositions x ≤ 0.79 showed that the electrical conduction occurred by fast electron exchange amongst Fe2+ and Fe3+ ions situated on octahedral sites in the spinel lattice, by a hopping mechanism. For composition x > 0.79 it was found that the transition of the charge carriers through cation vacancies is the predominant mechanism. Some breaks in the conductivity-temperature curves were found near the Curie points. Seebeck voltage measurements showed that γ-irradiated and unirradiated spinels behave as n-type semiconductors. The effect of γ-irradiation on the conductivity, activation energy, charge carriers and the conduction mechanism is discussed. © 1988 Chapman and Hall Ltd.
EL-SHERBINI, T. M., A. A. Farrag, H. M. M. Mansour, and A. A. Rahman,
"Energy levels of doubly excited states in magnesium isoelectronic sequence",
Acta physica polonica. A, vol. 73, issue 4: Polska Akademia Nauk, pp. 631-634, 1988.
Abstractn/a
M M Metwally, I A Abd El Gawad, M. E. A. M. S. M.,
"The hypocholesterolaemic effect of butter milk. I. The effect of butter oil, butter milk, casein and cream on rats serum and hepatic lipids.",
Egyptian J. Dairy Sci.,, vol. 16, pp. 175, 1988.
Abstractn/a
Nasr, H. S. E. H., M. E. L. M. Khosht, I. E. M. Kassas, and K. A. G. Mansour,
"Ocular complications associated with atopic dermatitis.",
The Medical Journal of Cairo University, vol. 56, issue 3, pp. 137-145, 1988.
M.M., E. A., A. W. M., and K. M.,
"On the Geology of the Basement Rocks East of Abu Zeneima, West Central Sinai, Egypt.",
Egyptian Journal of Geology, vol. 1-2, pp. 1-25, 1988.
Metwalli, S. M., and S. Elmi,
"A Quadratic Optimization Technique",
Current advances in mechanical design and production IV: proceedings of the Fourth Cairo University MDP Conference, Cairo, 27-29 December 1988, vol. 4: Pergamon, pp. 369, 1988.
Abstractn/a
Akl, M., A. E. Hindawy, N. E. Badrawi, G. Nada, S. M. Mahfouz, A. A. E. H. Hadi, M. Mansy, and Y. Fayed,
"Qualitative and quntitative features of immunomodulation of granulomas of hepatic murine schistosomiasis Mansoni",
The New Egyptian Journal of Medicine, vol. 2, issue 3, pp. 823-828, 1988.
Radwan, M. S., M. M. F. Abdalla, G. Fischbeck, A. A. Metwally, and D. S. Darwish,
"Selection in faba bean for tolerance to broomrape, orobanche crenata Forsk.",
Plant breeding, vol. 100, issue 4: Wiley Online Library, pp. 289-298, 1988.
Abstractn/a
Radwan, M. S., M. M. F. Abdalla, G. Fischbeck, A. A. Metwally, and D. S. Darwish,
"Selection in faba bean for tolerance to broomrape, orobanche crenata Forsk.",
Plant breeding, vol. 100, no. 4: Wiley Online Library, pp. 289–298, 1988.
Abstractn/a
Singh, N. P., M. T. McCoy, R. R. Tice, and E. L. Schneider,
"A simple technique for quantitation of low levels of DNA damage in individual cells",
Experimental cell research, vol. 175, issue 1: Academic Press, pp. 184-191, 1988.
Abstractn/a