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R.S.;, F., G. S. El-Baroty, and A. L. – M., " Influence of paraffin oils on lipid rancidity", Grasas Y Aceites, , vol. 41, pp. 248-255, 1990.
R.S.;, F., G. S. El-Baroty, and A. L. – M., " Influence of paraffin oils on lipid rancidity", Grasas Y Aceites, , vol. 41, pp. 248-255, 1990.
R.S.Abdellatif, H., G. Zhang, X. Wang, D. Xie, J. T.S.Irvine, J. Ni, and C. Ni, "Boosting photocatalytic oxidation on graphitic carbon nitride for efficient photocatalysis by heterojunction with graphitic carbon units", Chemical Engineering Journal, vol. 370, pp. 875–884, 2019. abdellatif2019.pdf
R.S.Abdellatif, H., G. Zhang, D. Xie, JiupaiNia, and ChengshengNia, "Ionic Salt-Mediated Tuning of the Morphology and Band Structure of Graphitic Carbon Nitride for NO Removal under Visible Light", ACS Applied Nano Materials, vol. 4, issue 3, pp. 2828 - 2839, 2021.
R.S.Ahmed, G. M. Kalafallah, R.I.Refae, and M. A. Ali, Chrome biosorption and chemical oxygen demand reduction from tannery wastewater by aerobic activated sludge , , Gizs, Cairo, 2013.
R.S.Hafez, R. Ramdan, and S. S. El‑Khiyami, "Investigation of structural, optical, magnetic, and electrical properties of PMMA doped with magnetite nanoparticles", J Mater Sci: Mater Electron , vol. 32, pp. 14557–14568, 2021.
R.S.Hafez, N. A. Hakeem, A. A. Ward, A. M. Ismail, and A. F. H. El‑kader, "Dielectric and Thermal Properties of PEO/PVDF Blend Doped with Diferent Concentrations of Li4Ti5O12 Nanoparticles", Journal of Inorganic and Organometallic Polymers and Materials , vol. 30, pp. 4468–4480, 2020.
R.Sabry, A.Badr, and A.Hegazy, "Optimization of Support Vector Machine Classifier based on Evolutionary Algorithm for Breast Cancer Diagnosis", International Journal of Computer Science and Network Security, 2012.
R.Shabana, "An approach for breeding an idotype of sunflower for irrigated area", 7th Inter.Congress Stat. ,Computer Sci. and Damographic Res,, vol. 6, pp. 37–57, 1982. Abstract
RA, R., F. MM, G. HI, and S. N, "1- T helper 17 and Tregs: a novel proposed mechanism for NB-UVB in vitiligo.", Exp Dermatol, vol. 23, issue 4, pp. 283-286, 2014.
RA, E. - B., El Sherity SY, and A. MG., "Body composition changes in asthmatic children regarding steroid therapy duration", Egyptian Pharmaceutical Journal., vol. 19, pp. 18–24., 2020.
RA, E. - A., H. F, A. - T. H, S. EM, A. - W. AH, A. H. A, S. M, E. - S. A, and A. - T. T., "Epigenetics and miRNA as predictive markers and targets for lung cancer chemotherapy.", Cancer Biol Ther., vol. 16, issue 7, pp. 1056-70, 2015.
RA, A., A. DK, and S. IA, "A localized case-control study of extra-gastric manifestations of Helicobacter pylori infection in children.", Indian J Pediatr., vol. 78, issue 10, pp. 1302, 2011.
RA, H., T. SE, and F. WA, "PREVALENCE OF VISIBLE ENAMEL DEFECTS IN PERMANENT DENTITION AMONG A GROUP OF EGYPTION CHILDREN", Egypt Dent J, vol. 60 January, issue 0 070-9484, pp. 975-981, 2014. prevalence_of_visible_enamel.pdf
RA, W., P. E, R. CR, S. SK, W. RA, C. JE, P. I, S. NA, and M. L. BA, "GABA B receptor-modulated selective peripheral analgesia by the non-proteinogenic amino acid, isovaline", Neuroscience, vol. 213, pp. 154-60, 2012.
RA, A., and A. DK, "A Case-Control Study of Enuresis among Children.", Egyptian Pediatric Association Gazette, vol. 59, issue 4, 2011.
RA, A., K. D, E. S. R, E. SM, S. GH, Y. SM, and H. RE, "• CD209-336A/G promotor polymorphism and its clinical associations in sickle cell disease Egyptian Pediatric patients", Hematol Oncol Stem Cell Ther , vol. 11, pp. 75– 81, 2018. cd209.pdf
RA, A., A. DK, and S. IA, "A localized case-control study of extra-gastric manifestations of Helicobacter pylori infection in children.", Indian J Pediatr., vol. 78, issue 4, pp. 418-22, 2011.
Raad, I. I., A. - M. Chaftari, H. A. Torres, E. M. Ayoub, L. I. Narouz, J. Bartek, and R. Hachem, "Challenge of hepatitis C in Egypt and hepatitis B in Mauritania", World J Hepatol, vol. 10, issue 9, 2018. AbstractWebsite

Egypt has one of the highest prevalence rates of hepatitis C virus (HCV) in the world, mostly with genotype 4 that is highly associated with severe fibrosis. As a consequence, hepatocellular carcinoma has become the leading cause of cancer in this country. Mauritania is a highly endemic area for hepatitis B virus (HBV). HBV and HCV could both be iatrogenically transmitted through infected blood products, infected needles, and medical equipment improperly sterilized. Adequate and efficient healthcare and public health measures with good surveillance programs, access for screening, prevention strategies, and successful treatment are needed to halt the spread of these diseases. Herein, we have reviewed the epidemiology, modes of transmission, predisposing factors, and novel treatment modalities of these viruses. We have proposed practices and interventions to decrease the risk of transmission of HCV and HBV in the affected countries, including strict adherence to standard precautions in the healthcare setting, rigorous education and training of patients and healthcare providers, universal screening of blood donors, use of safety-engineered devices, proper sterilization of medical equipment, hepatitis B vaccination, as well as effective direct-acting antiviral agents for the treatment of HCV.

Raafat, A., S. S. Tahoun, and N. M. Aboul Ela, "Palynology and palynofacies of the Middle Jurassic and Lower Cretaceous successions of northwest Egypt", Arabian Journal of Geosciences., vol. 14, pp. 2539, 2021.
Raafat, K. A., R. S. H. M. Allam, and B. M. Medhat, "OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY FINDINGS IN PATIENTS WITH NONOCULAR BEHÇET DISEASE.", Retina (Philadelphia, Pa.), 2018 Apr 23. Abstract

PURPOSE: To describe the optical coherence tomography angiography findings in nonocular Behçet disease.

METHODS: The superficial capillary plexus (SCP) and deep capillary plexus (DCP) and outer retinal and choroidal flow were evaluated using optical coherence tomography angiography. Perimetry was performed to correlate any microvascular and functional changes.

RESULTS: Capillary nonperfusion areas were found in the superficial capillary plexus in 16/20 eyes (80%) and in the DCP in 17/20 eyes (85%). Perifoveal capillary arcade disruption and vessel rarefaction were present in both plexuses in all cases. Capillary telangiectasia was present in the superficial capillary plexus in five eyes (25%) and in the DCP in all eyes. Telangiectasia of the parafoveal capillaries was present in the DCP in all eyes. The mean area of the foveal avascular zone was not significantly different from that in 20 normal eyes (P = 0.68). However, mean and central subfield capillary density values were significantly lower (P < 0.001 and P < 0.005, respectively) in the Behçet disease group. Perimetry revealed central scotomata on the pattern deviation plot in 12 eyes (60%).

CONCLUSION: Telangiectasia of the parafoveal capillaries was detected in the DCP in all cases. Microvascular changes in the superficial capillary plexus and DCP in nonocular Behçet disease can be detected by optical coherence tomography angiography.

raafat, R., R. Dwedar, and E. El-Seidi, "evaluation of chrmogenic medium (cps) inthe isolation and identification of urinary tract pathogens", the egyptian journal of medical microbiology, vol. 24 no 2, issue 1110-2179, pp. 29-34, 2015. final_copy_chromogenic_media.doc