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Metwally, N. H., N. A. Sobhy, and F. M. Abdelrazek, "S{\'ıntesis de algunos nuevos derivados de piridina y de piridinas fusionadas a partir de a-cianometilbencilidenmalononitrilio", Afinidad: Revista de qu{\'ımica teórica y aplicada, vol. 63, no. 522: Asociación de Qu{\'ımicos e Ingenieros, pp. 149–152, 2006. Abstract
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Afify, A. E. - M. M. R., S. A. Fayed, E. A. Shalaby, and H. A. and El-Shemy, "Syzygium Cumini (pomposia) Active Principles Exhibit Potent Anticancer and Antioxidant Activities", African Journal of Pharmacy and Pharmacology, 2011. Abstract

The antioxidant and anticancer activities of Syzygium cumini fruit extracts were investigated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical-scavenging assay and viability of leukemia cancer cells (AML cell line) respectively. The successive extracts, hexane, chloroform, ether, ethyl acetate, ethanol and water were prepared and subjected to antioxidant and anticancer evaluation. The results showed that the ethanol extract had stronger antioxidant and anti- leukemia activities than the other ones. Spectroscopic methods data of active ingredients separated from ethanol extract indicated that S.cumini fruit extracts contained phenolic compounds, such as Kaempferol 7-O-methylether and sterols such as ?-Sitosterol responsible for their antioxidant and anticancer activities.

Afify, A. E. - M. M. R., S. A. Fayed, E. A. Shalaby, and H. A. EL-SHEMY, "Syzygium cumini (pomposia) active principles exhibit potent anticancer and antioxidant activities", African Journal of Pharmacy and Pharmacology, vol. 5, no. 7: Academic Journals, pp. 948–956, 2011. Abstract
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Afify, A. E. - M. M. R., S. A. Fayed, E. A. Shalaby, and H. A. EL-SHEMY, "Syzygium cumini (pomposia) active principles exhibit potent anticancer and antioxidant activities", African Journal of Pharmacy and Pharmacology, vol. 5, no. 7: Academic Journals, pp. 948–956, 2011. Abstract
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Afify, A. M. R., S. A. Fayed, E. A. Shalaby, and H. A. EL-SHEMY, "Syzygium cumini (pomposia) active principles exhibit potent anticancer and antioxidant activities", Afr J Pharm Pharmacol, vol. 5, no. 7, pp. 94, 2011. Abstract
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Afify, A. E. - M. M. R., S. A. Fayed, E. A. Shalaby, and H. A. EL-SHEMY, "Syzygium cumini (pomposia) active principles exhibit potent anticancer and antioxidant activities", African Journal of Pharmacy and Pharmacology, vol. 5, issue 7: Academic Journals, pp. 948-956, 2011. Abstract
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Batiha, G. E. - S., L. M. Alkazmi, L. G. Wasef, A. Magdy Beshbishy, E. H. Nadwa, and E. K. Rashwan, Syzygium aromaticum L.(Myrtaceae): Traditional uses, bioactive chemical constituents, pharmacological and toxicological activities, , vol. 10, issue 2: Multidisciplinary Digital Publishing Institute, pp. 202, 2020. Abstract
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Batiha, G. E. - S., L. M. Alkazmi, L. G. Wasef, A. Magdy Beshbishy, E. H. Nadwa, and E. K. Rashwan, "Syzygium aromaticum L.(Myrtaceae): Traditional uses, bioactive chemical constituents, pharmacological and toxicological activities", Biomolecules, vol. 10, issue 2: Multidisciplinary Digital Publishing Institute (MDPI), 2020. Abstract
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Wilson, B., Systems: concepts, methodologies and applications, , 2nd, Chichester, Wiley, 1990. Abstract

explains checkland's method

Wong, D. C. J., R. Schlechter, A. Vannozzi, J. Höll, I. Hmmam, J. Bogs, G. B. Tornielli, S. D. Castellarin, and J. T. Matus, "A systems-oriented analysis of the grapevine R2R3-MYB transcription factor family uncovers new insights into the regulation of stilbene accumulation", DNA research, vol. 23, issue 5: Oxford University Press, pp. 451-466, 2016. Abstract
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Wong, D. C., R. Schlechter, A. Vannozzi, J. Höll, I. Hmmam, J. Bogs, G. B. Tornielli, S. D. Castellarin, and J. T. Matus, "A systems-oriented analysis of the grapevine R2R3-MYB transcription factor family uncovers new insights into t he regulation of stilbene accumulation.", DNA research, vol. 23, issue 5, pp. 451-466, 2016. Abstract

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Galal, G., and R. Paul, "Systems {Architectonics}", AMCIS 1999 Proceedings, pp. 217, 1999. Abstract
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Galal, G. H., and R. J. Paul, Systems {Architectonics}, : Association for Information Systems, pp. 627–629, 1999. Abstract
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Shelly, G. B., T. J. Cashman, J. Adamski, and J. J. Adamski, Systems {Analysis} and {Design}, , Boston, boyd & fraser, 1991. Abstract
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Methlie, L. B., Systems requirements analysis - methods and models, : North-Holland, pp. 173–185, 1979. Abstract
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Rowe, R. K., and M. S. Hosney, "A systems engineering approach to minimizing leachate leakage from landfills", 9th International Conference on Geosynthetics, 9ICG, Guaruja, Brazil, pp. 501-510, 2010.
Matar, M., H. Osman, M. Georgy, A. Abou-Zeid, and M. El-Said, "Systems engineering approach to measuring the environmental impacts of open trenching construction operations", ICSCPM16: The 2016 International Conference on Sustainable Construction and Project Management: Construction and Project Management Research Institute, pp. 1–11, 2016. Abstract
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Matar, M., H. Osman, Maged Georgy, A. Abou-Zeid, and M. El-Said, "A systems engineering approach for realizing sustainability in infrastructure projects", HBRC Journal: Elsevier, 2015. Abstract
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Blanchard, B. S., and W. J. Fabrycky, Systems engineering and analysis, , 4th, New Jersey, Pearson Prentice Hall, 2006. Abstract
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Aziz, R. K., J. M. Monk, R. M. Lewis, S. I. Loh, A. Mishra, A. A. Nagle, C. Satyanarayana, S. Dhakshinamoorthy, M. Luche, D. B. Kitchen, et al., "Systems biology-guided identification of synthetic lethal gene pairs and its potential use to discover antibiotic combinations", Scientific reports, vol. 5: Nature Publishing Group, pp. 16025, 2015. Abstract
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Galal, G., and R. Paul, "Systems architectonics", AMCIS 1999 Proceedings, pp. 217, 1999. Abstract
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Galal, G., and R. Paul, "Systems architectonics", AMCIS 1999 Proceedings, pp. 217, 1999. Abstract
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Galal-Edeen, G. H., "Systems architecting: the very idea", Logistics Information Management, vol. 16, no. 2, pp. 101–105, 2003. Abstract
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Galal-Edeen, G. H., "Systems architecting: the very idea", Logistics Information Management, vol. 16, pp. 101–105, 2003. Abstract
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