Publications

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Journal Article
Abdelsalam, E., M. Samer, Y. A. Attia, M. A. Abdel-Hadi, H. E. Hassan, and Y. Badr, "Influence of zero valent iron nanoparticles and magnetic iron oxide nanoparticles on biogas and methane production from anaerobic digestion of manure", Energy, vol. 120, pp. 842-853, 2017. AbstractWebsite
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El‐Kabbany, F., G. Said, Y. Badr, and S. Taha, "Infrared investigation of the phase transition in K2SO4", physica status solidi (a), vol. 67, no. 1, pp. 339-345, 1981. AbstractWebsite
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El‐Kabbany, F., Y. Badr, and M. Tosson, "Infrared study of the high‐temperature phase transition III—I of Na2SO4", physica status solidi (a), vol. 63, no. 2, pp. 699-704, 1981. AbstractWebsite
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Mohamed, T. A., A. M. Mustafa, W. M. Zoghaib, M. S. Afifi, R. S. Farag, and Y. Badr, "Infrared, Raman and temperature-dependent NMR spectra, vibrational assignments, normal coordinate analysis, and DFT calculations of benzoxazoline-2-thione", Vibrational Spectroscopy, vol. 52, no. 2, pp. 128-136, 2010. AbstractWebsite
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Badr, Y. A., and S. B. El-Guiziri, "IR and DTA studies of high-temperature phase transition in lithium-ammonium sulphate", Journal of Physics and Chemistry of Solids, vol. 51, no. 5, pp. 421-423, 1990. AbstractWebsite
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Badr, Y. A., and R. Kamel, "Low‐temperature structure changes in nitrate crystals", physica status solidi (a), vol. 53, no. 2, pp. K161-K164, 1979. AbstractWebsite
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Oaks, J. A., and H. M. Alkhateeb, "Māl, enunciations, and the prehistory of Arabic algebra", Historia Mathematica, vol. 32, no. 4, pp. 400 - 425, 2005. AbstractWebsite

Medieval Arabic algebra books intended for practical training generally have in common a first “book” which is divided into two sections: one on the methods of solving simplified equations and manipulating expressions, followed by one consisting of worked-out problems. By paying close attention to the wording of the problems in the books of al-Khwārizmī, Abū Kāmil, and Ibn Badr, we reveal the different ways the word māl was used. In the enunciation of a problem it is a common noun meaning “quantity,” while in the solution it is the proper noun naming the square of “thing” (shay '). We then look into the differences between the wording of enunciations and equations, which clarify certain problems solved without “thing,” and help explain the development of algebra before the time of al-Khwārizmī.

Shaltout, I., and Y. Badr, "Manifestation of Nd ions on the structure, Raman and IR spectra of (TeO2-MoO-Nd2O3) glasses", Journal of Materials Science, vol. 40, no. 13, pp. 3367-3373, 2005. AbstractWebsite
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Badr, Y., and M. A. Mahmoud, "Manifestation of the silver nanoparticles incorporated into the poly vinyl alcohol matrices", Journal of Materials Science, vol. 41, no. 12, pp. 3947-3953, 2006. AbstractWebsite
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Ateia, E. E., D. N. Ghaffar, Y. Badr, and N. Fangary, "Nd:YAG laser irradiation effect on the physical properties of cobalt ferrite nanoparticles", Appl. Phys. A:Materials Sci. Process., 2019.
Ateia, E. E., D. N. Ghaffar, Y. Badr, and N. Fangary, "Nd:YAG laser irradiation effect on the physical properties of cobalt ferrite nanoparticles", Appl. Phys. A:Materials Sci. Process., 2019.
Solouma, N. H., A. - B. M. Youssef, Y. A. Badr, and Y. M. Kadah, "A new real-time retinal tracking system for image-guided laser treatment", IEEE Transactions on Biomedical Engineering, vol. 49, no. 9, pp. 1059-1067, 2002. AbstractWebsite
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Badr, Y., M. G. A. E. Wahed, and M. A. Mahmoud, "On 308 nm photofragmentation of the silver nanoparticles", Applied Surface Science, vol. 253, no. 5, pp. 2502-2507, 2006. AbstractWebsite
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Badr, Y., and M. A. Mahmoud, "On interaction of 193 nm excimer laser with acetone (3s Rydberg state)", Journal of Molecular Structure, vol. 748, no. 1-3, pp. 189-193, 2005. AbstractWebsite
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Badr, Y. A., S. B. El‐Giziri, and T. M. Hammad, "On the effect of doping on the mechanism of phase transition of some ionic inorganic compounds", physica status solidi (a), vol. 100, no. 2, pp. 467-472, 1987. AbstractWebsite
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Badr, Y. A., and S. Awad, "On the low temperature phase transition in (NH4)2SO4", Journal of Physics and Chemistry of Solids, vol. 45, no. 3, pp. 351-353, 1984. AbstractWebsite
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Badr, Y. A., and S. Awad, "On the Low Temperature Phase Transition in Ammonium Sulfate", physica status solidi (a), vol. 72, no. 1, pp. K27-K32, 1982. AbstractWebsite
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Badr, Y., Z. I. Ali, and R. M. Khafagy, "On the mechanism of low temperature glass transition in low density polyethylene films", Radiation Physics and Chemistry, vol. 58, no. 1, pp. 87-100, 2000. AbstractWebsite
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Soliman, W., S. El-Ansary, and Y. Badr, "Optical characterization of one-step synthesis of ternary nanoalloy by laser ablation of stainless steel target in Hexane", Optics and Laser Technology, vol. 97, pp. 41-45, 2017. AbstractWebsite
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Atwa, D. M. M., I. M. Azzouz, and Y. Badr, "Optical, structural and optoelectronic properties of pulsed laser deposition PbS thin film", Applied Physics B: Lasers and Optics, vol. 103, no. 1, pp. 161-164, 2011. AbstractWebsite
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Badr, Y., and M. A. Mahmoud, "Optimization and photophysics of cadmium selenide nanoparticles", Physica B: Condensed Matter, vol. 369, no. 1-4, pp. 278-286, 2005. AbstractWebsite
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Ahmed, S., A. M. Shamah, R. Kamel, and Y. Badr, "Phase Transition in [(NH4)1−x Kx]2SO4 Crystals", physica status solidi (a), vol. 102, no. 2, pp. K81-K85, 1987. AbstractWebsite
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Al-Shamiri, H. A. S., M. T. H. Abou Kana, I. M. Azzouz, and Y. A. Badr, "Photo-physical properties and quantum yield of some laser dyes in new polymer host", Optics and Laser Technology, vol. 41, no. 4, pp. 415-418, 2009. AbstractWebsite
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Badr, Y., and M. A. Mahmoud, "Photocatalytic degradation of methyl orange by gold silver nano-core/silica nano-shell", Journal of Physics and Chemistry of Solids, vol. 68, no. 3, pp. 413-419, 2007. AbstractWebsite
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