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A, F., S. - H. A, I. KS, M. A, and A. - R. M, "Effect of Cell Phone-Emitted Electromagnetic Waves on Levels of Male Sex Hormones and Redox Balance in Humans. ", OnLine Journal of Biological Sciences, vol. 21, issue 3, pp. 221-227, 2021.
A, Z., and R. M, "• Multilevel Lumbar Spondylolisthesis: Comparative Study between two Surgical Fusion Techniques", Egyptian Journal of Neurosurgery, vol. 29 / No. 4, 2013.
A, A. - E., T. MI, and A. - E. AA, "Development and in Vitro/in Vivo Evaluation of Etodolac Controlled Porosity Osmotic Pump Tablets", AAPS PharmSciTech, vol. 12, issue 2, 2011. cu_pdf.pdf
A, I., A. R. H, K. M, R. Sami, N. N, and K. O, "Tumor necrosis factor alpha-308 and Lymphotoxin alpha+252 genetic polymorphisms and the susceptibility to non-Hodgkin lymphoma in Egypt.", leukemia research, vol. 36, issue 6, pp. 694-800, 2012.
A, H. A., S. M. Abo-Azma, S. M. Fayed, and T. Mostafa, "Seminal plasma cotinine and insulin-like growth factor-I in idiopathic oligoasthenoteratozoospermic smokers", BJU Int, vol. 103, issue 1, pp. 108-111, 2008.
A, "*A survey study on disinfectant use among egyptians for corona virus protection.knowledge,practice and toxicity", International journal of medical toxicology and legal medicine, issue 3,4, 2021.
a, A. A., Y. M. b, Y. S. M. c, M. A. Y. c, R. M. G. b, and S. M. A. b a, "On the ionospheric effects of 26 June, 1999 solar flare", Elsevier B.V. on behalf of National Research Institute of Astronomy and Geophysics, vol. 1, pp. 179–185, 2013. Abstract1-s2.0-s2090997712000247-main.pdf

In this paper we traced the possible influence of the solar flare of June 26, 1999 on the
ionosphere throughout the F2-layer parameters. This study concentrated on two parameters,
foF2, the critical frequency of the ordinary component of the F2-layer; and hc, the height of the
maximum obtained by fitting a theoretical h0F curve for the parabola of best fit to the observed
ordinary mode trace near foF2 and correcting for under-lying ionization. The results showed that
the relation between the amplitude of averaged sudden enhancements of the perturbations for
the critical frequency of the ionospheric F2 region, DfoF2 (for data obtained from 8 ionosonde stations),
and the duration of the flare is more applicable to the empirical formula given by Youssef
(2008). Since we found this relation is linear and has a very strong correlation. In addition, we
found that the relation between the average amplitude, of DfoF2, for the 8 selected ionosonde stations,
and the flare flux is not a linear. For the second parameter, hc, it was found that, the hc amplitude
depends on the location of the station on the Earth, and it reaches its maximum value during
the decay phase of the studied flare.

A, H. M. H., M. R, H. M. H, A. T. A, E. - G. A. O, and S. M. A, "Biological and Chemical Investigation of the Soft Coral Lobophytum pauciflorum Collected from the Egyptian Red Sea", International Journal of Pharmacognosy and Phytochemical Research, vol. 8, issue 6, pp. 906-911, 2016. Abstract

Soft corals of the genus Lobophytum, a marine invertebrate, have shown diverse biological activities as antiinflammatory, cytotoxic, and antibacterial. Our research is concerning with biological screening and discovering bioactive substances from the Red Sea soft coral Lobophytum pauciflorum. In vitro cyclooxygenase inhibitory activity using COX-1 and COX-2 kits and antimicrobial screening were carried out for n-hexane, dichloromethane, ethyl acetate and methanol fractions. The isolated compounds were elucidated using different spectroscopic methods including nuclear magnetic resonance and mass spectrometry. Also n-hexane fraction was subjected to GC/MS analysis. Bioassay guided fractionation resulted in isolation and characterization of two bio-active metabolites nephthenol (2) and gorgost-5-ene-3β-ol (3) with significant in vitro antiinflammatory activity against COX-1 and COX-2 compared to Indomethacin and Celecoxib. Four other compounds were also isolated: Heptadecan-1-ol (1), palmitic acid (4), stearic acid (5) and batilol (6). The isolated compounds showed antimicrobial activity ranging from 25 μg/ml to 50 μg/ml against the tested microorganisms. The fatty acid constituents of the n-hexane fraction were identified by GC/MS analysis; results revealed the presence of hexadecanoic acid, methyl ester as major saturated fatty acid and 7,10-hexadecadienoic acid, methyl ester as major unsaturated fatty acid.
Keywords: Lobophytum pauciflorum, gorgost-5-ene-3β-ol, nephthenol, COX-1, COX-2 and GC/MS.

A, T., Abdelhafez YG, O. AA, H. A, and E. - R. Sh, "Diagnostic performance of 18F-FDG PET/Contrast-enhanced CT versus contrast enhanced CT alone for post-treatment surveillance of malignant ovarian tumors", Nuclear Medicine Communications, vol. 37, issue 5, pp. 453-460, 2016. diagnostic_performance.pdf
A, B., A. AM, N. M. Raouf MA, Nasr SM, and A. EE., "Ultrastructural ciliary changes of maxillary sinus mucosa following functional endoscopic sinus surgery: an image analysis quantitative study", J Laryngol Otol. , vol. 2003 Apr, issue Apr;117(4), pp. 273-9, 2003.
A, M., S. N, A. M, I. Z, and A. -eldin Z, "Vitamin D Levels in Egyptian HCV Patients (Genotype 4) Treated with Pegylated Interferon", Acta Gastro-entrologica Belgica, vol. 76, issue 1, pp. 38-44, 2013.
A,  S., E. H. H, A. H. D, and M. FA, "Evaluation of Medicago sativa L. sprouts as antihyperlipidemic and antihyperglycemic agent.", Pak.J.Pharm.Sci. , vol. 28, issue 6, pp. 2061-74, 2015.
A, M. M., and I. A. Emam, "Normal Vascular and Nerve Distribution of the Pes Region in Dogs: An Anatomical and Diagnostic Imaging", International Journal of Veterinary Science, vol. 9, issue 2, pp. 259-266, 2020.
A, E. - S., E. - H. Sh, Z. G, M. H, and A. K. H, "Tc99m MIBI in assessment of high risk patients with silent myocardial ischemia", The sixth international scientific conference of the Egyptian medical syndicate, 15-18 December, 1994.
A, N., A. R. Youssef, A. A, and I. MM, "Neuromuscular electrical stimulation combined with Ponseti method for correction of idiopathic clubfoot.", Physical Therapy: The future of the Treatment”: the 14th International scientific conference, Faculty of Physical Therapy, Cairo University, Egypt, 2013.
A, S. M., Allam M, Heck QK, Urbanaviciute I, R. T, Stuart D, Zakhrabekova S, Börner A, Pillen K, Hansson M, et al., "Analyses of MADS-box genes suggest HvMADS56 to regulate lateral spikelet development in barley", Plants, vol. 10, 2021.
A, E. B., N. H, M. N. E, and B. A, "STEM CELL LIKE PHENOTYPE IN INFLAMMATORY BREAST CANCER", Annals of Oncology, vol. i12-i12, 2014.