Publications

Export 107033 results:
Sort by: Author Title Type [ Year  (Desc)]
1989
Ismail, I. S. M. A. I. L. M. O. H. A. M. E. D. K. A. M. E. L., A. M. Salama, M. O. H. A. M. E. D. I. B. R. A. H. I. M. A. H. M. E. D. Ali, and S. A. Ouf, "Effect of amendment of non-autoclaved and autoclaved natural soil, with Eucalyptus rostrata leaves, on fungal population and total content of phenolic compounds", Egyptian Journal of Microbiology (Egypt), 1989. Abstract
n/a
Ismail, I. M. K., A. M. Salama, M. I. A. Ali, and S. A. Ouf, "Effect of Aspergillus terreus and Bacillus pumilus culture filtrates on Sclerotium cepivorum in vitro", Egyptian Journal of Microbiology (Egypt), vol. 25, no. 3, pp. 355–348, 1989. Abstract
n/a
Galal, S. M., "Effect of cottonseed pressing methods on the quality characteristics of oil and cake", Bulletin of Faculty of Agriculture, Cairo University, 1989. Abstract
n/a
El-Husseiny, O., "Effect of dietary lipid on performance and nutrients utilization in turkey", Annals of Agricultural Science, Moshtohor (Egypt), 1989. Abstract
n/a
Salama, M. A. M., T. M. El-Bedawy, and L. H. Bedeir, Effect of early weaning on productive performance of buffalo calves up to six months of age [Animals, fish, and poultry production], : University College of North Wales, 1989. Abstract
n/a
Gheith, E. S., A. A. Abdel-Hafith, N. A. Khalil, and A. Abdel-Shaheed, "Effect of nitrogen and some micro nutrients on wheat", Assiut Journal of Agricultural Sciences (Egypt), 1989. Abstract
n/a
El-Bedawy, T. M., M. A. M. Salama, and L. H. Bedeir, Effect of restricted milk intake on productive performance of buffalo calves up to six months of age [Animals, fish, and poultry production], : University College of North Wales, 1989. Abstract
n/a
El-Nakhla, S. M., F. Hassan, and A. H. Barkawi, "Effect of suckling period on post-partum ovarian activity in local Rahmani ewes", International symposium on the constraints and possibilities of ruminant production in the dry subtropics, Cairo (Egypt), 5-7 Nov 1988: Pudoc, 1989. Abstract
n/a
HADDAD, E. I. D. E., and M. A. G. D. I. M. MASHALY, "Effect of thyroidectomy of immature male chickens on circulating thyroid hormones and on response to thyroid-stimulating hormone and chronic cold exposure", Poultry science, vol. 68, issue 1: Poultry Science Association, pp. 169-176, 1989. Abstract
n/a
Salem, O. A., M. A. Hanafy, A. I. El-Moty, A. El-Mola, and G. M. Rakha, Effect of using agro-industrial by-products on sheep performance, , 1989. Abstract
n/a
Badr, Y. A., and S. B. El-Guiziri, "Effect of γ-radiation on the phase transition temperature of Li0.5(NH4)0.5SO4", Journal of Physics and Chemistry of Solids, vol. 50, no. 12, pp. 1261 - 1264, 1989. AbstractWebsite

Polycrystalline lithium-ammonium sulphate samples were subjected to X-ray diffraction analysis for determining the lattice parameters of the prepared mixed crystals. The compositions of the samples were determined using X-ray microanalysis. The Li0.5(NH4)0.5SO4 samples were irradiated with different doses of γ-radiation in order to investigate the effect of this ionizing radiation on the phase transition temperatures Tc1 and Tc2. The temperature dependence of the d.c. resistivity ρd.c. and dielectric constant ϵ of irradiated samples showed (i) a shift of Tc1 to higher temperatures; (ii) a shift of Tc2 to lower temperatures; and (iii) the appearance of a new anomaly near 128°C at moderately high γ-doses. The mechanisms giving rise to this behaviour are discussed.

Badr, Y. A., and S. B. El-Guiziri, "Effect of γ-radiation on the phase transition temperature of Li0.5(NH4)0.5SO4", Journal of Physics and Chemistry of Solids, vol. 50, no. 12, pp. 1261 - 1264, 1989. AbstractWebsite

Polycrystalline lithium-ammonium sulphate samples were subjected to X-ray diffraction analysis for determining the lattice parameters of the prepared mixed crystals. The compositions of the samples were determined using X-ray microanalysis. The Li0.5(NH4)0.5SO4 samples were irradiated with different doses of γ-radiation in order to investigate the effect of this ionizing radiation on the phase transition temperatures Tc1 and Tc2. The temperature dependence of the d.c. resistivity ρd.c. and dielectric constant ϵ of irradiated samples showed (i) a shift of Tc1 to higher temperatures; (ii) a shift of Tc2 to lower temperatures; and (iii) the appearance of a new anomaly near 128°C at moderately high γ-doses. The mechanisms giving rise to this behaviour are discussed.

Badr, Y. A., and S. B. El-Guiziri, "Effect of γ-radiation on the phase transition temperature of Li0.5(NH4)0.5SO4", Journal of Physics and Chemistry of Solids, vol. 50, no. 12, pp. 1261-1264, 1989. AbstractWebsite
n/a
Salem, O. A. I., T. T. El-Gallad, S. M. Allam, M. M. E. Hassouna, and M. S. Farghly, "Effects of periodic feed restriction with subsequent re-alimentation on performance of Baladi goats", Small Ruminant Research, vol. 2, issue 2: Elsevier, pp. 133-141, 1989. Abstract
n/a
El Shabshiry, M., A. Faessler, and M. Ismail, "Effects of the Pauli blocking and surface contribution to the optical potential on the ion-ion reaction cross section", Journal of Physics G: Nuclear and Particle Physics, vol. 15, no. 4, pp. L59-L62, 1989. AbstractWebsite

The energy dependence of the ion-ion reaction cross section has been investigated using the eikonal approximation to study the effects of the Pauli blocking and surface contribution to the optical potential. This leads to theoretical cross sections lower than the data. If the collective surface contribution is added to the volume part, one obtains reasonable agreement with experiment at higher energies.

, "Electrical conduction in γ irradiated and unirradiated Fe3O4, CdFe2O4 and CoxZn1-xFe2O4 (0 ≤ x ≤ 1)", Thermochimica Acta, vol. 144, no. 1, pp. 45-52, 1989. AbstractWebsite

The electrical conductivity of γ irradiated and unirradiated finely divided ferrites of composition Fe3O4, CdFe2O4 and CoxZn1-xFe2O4 (0 ≤ x ≤ 1) was studied in a nitrogen atmosphere as a function of temperature. Fe3O4, ZnFe2O4 and CdFe2O4 showed n-type conduction, whereas CoFe2O4 showed p-type conduction. For CoVxZn1-xFe2O4 it was found that the type of conduction varies with the composition of ferrites. The electrical conduction in Fe3O4 and CoxZn1-xFe2O4 (0 ≤ x ≤1) was explained by a hopping mechanism, whereas the conduction in ZnFe2O4 and in CdFe2O4 is interpreted on the basis of the transfer of charge carriers through cation vacancies present on octahedral sites. The effect of γ irradiation on the conductivity, activation energy, charge carriers and the conduction mechanism was discussed. © 1989.

, "Electrical conduction in γ irradiated and unirradiated Fe3O4, CdFe2O4 and CoxZn1-xFe2O4 (0 ≤ x ≤ 1)", Thermochimica Acta, vol. 144, no. 1, pp. 45-52, 1989. AbstractWebsite

The electrical conductivity of γ irradiated and unirradiated finely divided ferrites of composition Fe3O4, CdFe2O4 and CoxZn1-xFe2O4 (0 ≤ x ≤ 1) was studied in a nitrogen atmosphere as a function of temperature. Fe3O4, ZnFe2O4 and CdFe2O4 showed n-type conduction, whereas CoFe2O4 showed p-type conduction. For CoVxZn1-xFe2O4 it was found that the type of conduction varies with the composition of ferrites. The electrical conduction in Fe3O4 and CoxZn1-xFe2O4 (0 ≤ x ≤1) was explained by a hopping mechanism, whereas the conduction in ZnFe2O4 and in CdFe2O4 is interpreted on the basis of the transfer of charge carriers through cation vacancies present on octahedral sites. The effect of γ irradiation on the conductivity, activation energy, charge carriers and the conduction mechanism was discussed. © 1989.

, "Electrical conduction in γ irradiated and unirradiated Fe3O4, CdFe2O4 and CoxZn1-xFe2O4 (0 ≤ x ≤ 1)", Thermochimica Acta, vol. 144, no. 1, pp. 45-52, 1989. AbstractWebsite

The electrical conductivity of γ irradiated and unirradiated finely divided ferrites of composition Fe3O4, CdFe2O4 and CoxZn1-xFe2O4 (0 ≤ x ≤ 1) was studied in a nitrogen atmosphere as a function of temperature. Fe3O4, ZnFe2O4 and CdFe2O4 showed n-type conduction, whereas CoFe2O4 showed p-type conduction. For CoVxZn1-xFe2O4 it was found that the type of conduction varies with the composition of ferrites. The electrical conduction in Fe3O4 and CoxZn1-xFe2O4 (0 ≤ x ≤1) was explained by a hopping mechanism, whereas the conduction in ZnFe2O4 and in CdFe2O4 is interpreted on the basis of the transfer of charge carriers through cation vacancies present on octahedral sites. The effect of γ irradiation on the conductivity, activation energy, charge carriers and the conduction mechanism was discussed. © 1989.

, "Electrical conduction in γ-irradiated and unirradiated Fe3O4, CdFe2O4 and CoxZN1-xFe2O4 (0 ≤x ≤ 1) ferrites", Journal of Materials Science, vol. 24, no. 7: Kluwer Academic Publishers, pp. 2478-2482, 1989. AbstractWebsite

The electrical conductivity of γ-irradiated and unirradiated finely divided ferrites of composition Fe3O4, CdFe2O4 and Cox Fn1-xFe2O4(0 ≤x ≤ 1) was studied in a nitrogen atmosphere as a function of temperature. Fe3O4, ZnFe2O4 and CdFe2O4 showed n-type conduction, whereas CoFe2O4 showed p-type conduction. For CoxZn1-xFe2O4 it was found that the type of conduction varies with the composition of ferrites. The electrical conduction in Fe3O4, and CoxZn1-xFe2O4(0 ≤x ≤ 1) was explained by a hopping mechanism, whereas the conduction in ZnFe2O4 and in CdFe2O4 is interpreted on the basis of the transfer of charge carriers through cation vacancies present on octahedral sites. The effect of γ-irradiation on the conductivity, activation energy, charge carriers and the conduction mechanism is discussed. © 1989 Chapman and Hall Ltd.