Publications

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AlTaweel, A. M., G. A. Fawzy, S. Perveen, and P. Alam, "X-Ray crystallographic and validated HPTLC analysis of the biomarker chromone glucoside (schumaniofioside A) isolated from Acalypha fruticosa growing in Saudi Arabia.", Saudi Pharmaceutical Journal, vol. 25, pp. 955-960, 2017.
Pardini, L., A. Elhassan, M. Ferretti, A. Foresta, S. Legnaioli, G. Lorenzetti, E. Nebbia, F. Catalli, M. A. Harith, D. Diaz Pace, et al., "X-Ray Fluorescence and Laser-Induced Breakdown Spectroscopy analysis of Roman silver denarii", Spectrochimica Acta Part B: Atomic Spectroscopy, vol. 74: Elsevier, pp. 156–161, 2012. Abstract
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Molham, M., N. Clerc, A. Takey, T. Sadibekova, A. B. Morcos, S. Yousef, H. M. Hayman, and M. Li, "X-ray properties of the X-CLASS-redMaPPer galaxy cluster sample: the luminosity–temperature relation", MNRAS , vol. 494, , pp. 161–177, 2020. download-1601460780130.pdf
Molham, M., N. Clerc, A. Takey, T. Sadibekova, A. B. Morcos, S. Yousef, Z. M. Hayman, M. Lieu, and S. Raychaud, "X-ray properties of the X-CLASS-redMaPPer galaxy cluster sample: the luminosity–temperature relation", Monthly Notices of the Royal Astronomical Society, vol. 494, issue 1, pp. 161–177, 2020. staa677.pdf
Elshemey, W. M., F. S. Mohamed, and I. M. Khater, "X-ray scattering for the characterization of lyophilized breast tissue samples", Radiation Physics and Chemistry, vol. 90: Pergamon, pp. 67-72, 2013. Abstract
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Elshemey, W. M., F. S. Mohamed, and I. M. Khater, "X-ray scattering for the characterization of lyophilized breast tissue samples", Radiation Physics and Chemistry, vol. 90, pp. 67-72, 2013. AbstractWebsite
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Elshemey, W. M., F. S. Mohamed, and I. M. Khater, "X-ray scattering for the characterization of lyophilized breast tissue samples", Radiation Physics and Chemistry, vol. 90: Elsevier, pp. 67-72, 2013. Abstract
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Elshemey, W. M., "X-ray Scattering for the Determination of Fat Content in Dairy Products", Radiation Physics and Chemistry, vol. 80, issue 7, pp. 779–781, 2011. AbstractCU-PDF.pdf

The scattering of x-rays from biological samples has been shown to produce characteristic profiles which depend on their molecular structure. The highly ordered fat molecules in an adipose tissue result in a relatively sharp scattering peak at 1.1nm-1 with a scattering profile which is considerably different from the scattering profile of a water-rich tissue. The latter is characterized by a broad scattering peak at about 1.6nm-1. A biological sample consisting of a mixture of both adipose and a water-rich tissue is expected to show a scattering profile which is directly linked to the relative contribution of each component and would reflect the percentage by volume of each component in the mixture. In this work, x-ray scattering profiles of a number of dairy products and water are measured. The values of two selected x-ray scattering characterization parameters (I1/I2% and areas A1/A2% of the scattering peaks at 1.1 nm-1 and 1.6 nm-1 respectively) are plotted against the fat content of each of the measured dairy samples. Results show a strong linear dependence of each of the x-ray scattering parameters and the fat content of the investigated dairy products. These results suggest a possible use of such technique as a new, simple and straight forward method for the determination of fat content of dairy products that would join and support the currently available techniques.

Elshemey, W. M., "X-ray scattering for the determination of fat content in dairy products", Radiation Physics and Chemistry, vol. 80, no. 7, pp. 779-781, 2011. AbstractWebsite
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Desouky, O. S., W. M. Elshemey, and N. S. Selim, "X-ray scattering signatures of β-thalassemia", Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 607, no. 2, pp. 463-469, 2009. AbstractWebsite
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Elshemey, W. M., A. S. Rady, and A. Dakrory, "X-ray Scattering: A Structure Based Method for the Assessment of fat Quality and fat Content in Beef Products", Food Biophysics, vol. 10, no. 1, pp. 76-82, 2014. AbstractWebsite
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Hassan, M. A., B. A. Korany, R. Misra, I. A. M. Issa, M. K. Ahmed, and A. F. A. El-Salam, "X-Ray Spectral Study of AGN Sources Content in Some Deep Extragalactic XMM-Newton Fields", Astrophysics and space science, vol. 339, issue 4, pp. 355–364, 2012.
Saleh, S. A., and F. M. Helmi, "X-ray study of corrosion products of some metals and alloys", XIIth International congress of crystallography, Ottawa, Canada, 1981.
Helmi, F. M., "X-ray study of some ancient pigments", IX European crystallographic meeting, Torino, Italy, 1985.
Helmi, F. M., "X-ray study of some copper ores, predynastic, Nagada, Upper Egypt", Xth European crystallographic meeting, Wroclaw, Poland, 1986.
Helmi, F. M., "X-ray study of some Islamic glazed pottery, Foustat, Egypt", Mathematical and physical Society of Egypt, vol. 1, issue 9, 1987.
Helmi, F. M., and N. Y. Iskander, "X-ray study, treatment, and conservation of Ramesses II's stove from the Egyptian museum, Cairo", Studies in Conservation, vol. 30, pp. 23-30, 1985.
Elella, M. A. H., E. S. Goda, M. A. Gab-Allah, S. E. Hong, B. Pandit, S. Lee, H. Gamal, A. ur Rehman, and K. R. Yoon, "Xanthan gum-derived materials for applications in environment and eco-friendly materials: A review", Journal of Environmental Chemical Engineering, vol. 9, pp. 104702, 2021.
Galal, A., A. Bilgic, R. M. Eltanamly, and A. OSman, "XEN Glaucoma Implant with Mitomycin C 1-Year Follow-Up: Result and Complications", Journal of Ophthalmology, vol. March 2017, issue March, pp. 1-5, 2017.
Hassan, F. M., H. A. E. A. Razik, M. S. Wadie, and D. S. Abdelfattah, "XIST and RPS4Y1 long non-coding RNA transcriptome as sex biomarkers in different body fluids", Egyptian Journal of Forensic Sciences, vol. 9, pp. 16, 2019.