1. Omar, H.H., A.A. Al-Judaibi and A.M. El-Gendy, 2018. Antimicrobial, antioxidant, anticancer activity and phytochemical analysis of the red alga, Laurencia papillosa. Int. J. Pharmacol., (In Press). .
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2. Omar, H., A.M. El-Gendy and K. Al-Ahmary, 2018. Bioremoval of toxic dye by using different marine macroalgae. Turk. J. Bot., 42: 15-27.
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3. Omar, H.H., F.S. Bahabri and A.M. El-Gendy, 2017. Biopotential application of synthesis nanoparticles as antimicrobial agents by using Laurencia papillosa. Int. J. Pharamcol., 13: 303-312.
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4. Omar, H.H., M.M. Aly, W.J. Al-Malki and K.S. Balkhair, 2016. Production and enhancement of poly-β-hydroxybutyrate in cyanobacteria. Main Group Chem., 15: 153-161.
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5. Al-Zahrani, A., H. Omer and A. Al-Judaibi, 2016. Impact of antibacterial activity of physical storage extracts on pathogenic bacteria. J. Biosci. Med., 4: 54-62.
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6. Al Khazan, M.M., H.H. Omar, N.M. Gumgumjee, H.M. Shiekh and A.M. El-Gendy, 2016. Marine macroalgae as a potential source of bioactive natural products with antibacterial activity. Main Group Chem., 15: 139-151.
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7. Omar, H.H., B.M. Abdullatif, M.M. El-Khzan and A.M. El-Gendy, 2015. Impact of various applications of seaweeds on growth of Zea mays L. and Helianthus annuus L. J. Plant Nutr., 38: 28-40.
8. Hamza, A.H., W. Al-Bishri, H.H. Omar and E.N. Danial, 2014. Potential antimicrobial, antioxidant and anityrosenase activities achieved by selected species of marine macroalgae. J. Pure Appl. Microbiol., 8: 257-265.
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9. Al-Zahrani, A., N. Al-Haj, H. Omer and A. Al-Judaibi, 2014. Impact of extracts of marine macroalgae on multidrug-resistant bacteria. J. Microbiol. Res., 4: 18-24.
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10. Omar, H.H., B.M. Abdullatif, M.M. El-Khzan and A.M. El-Gendy, 2013. Red sea water and biochemical composition of seaweeds at Southern coast of Jeddah, Saudi Arabia. Life Sci. J., 10: 1073-1080.
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11. Omar, H.H., N.M. Gumgumjee, H.M. Shiekh, M.M. El-Kazana and A.M. El-Gendy, 2012. Inhibition of the development of pathogenic fungi by extracts of some marine algae from the Red Sea of Jeddah, Saudi Arabia. Afr. J. Biotechnol., 11: 13697-14697.
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12. Omar, H.H., H.M. Shiekh, N.M. Gumgumjee, M.M. El-Kazan and A.M. El-Gendy, 2012. Antibacterial activity of extracts of some marine algae from the Red Sea of Jeddah, Saudi Arabia. Afr. J. Biotechnol., 11: 13576-13585.
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13. Omar, H.H., M.M. El-Khzan and A.M. El-Gendy, 2011. Influences of seaweed extracts on growth of seedlings of some crop plants. Egyp. J. Biotechnol., 38: 83-100.
14. El-Gendy, A.M., H.H. Omar and M.M. El-Khazan, 2011. Effect of pollution on the physico-chemical properties of the surface water and the biodiversity of seaweeds in the Red Sea at South of Jeddah, Saudi Arabia. Egypt J. Biotechnol., 37: 50-70.
15. Osman, M.E., A.H. El-Nagger, H.H. Omar and G.A. Esmail, 2008. Heavy metal binding capacity of exopolysaccharides produced by Anabaena variabilis and Nostoc muscorum. Egypt J. Exp. Biol. (Bot.)., 4: 48-53.
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16. Omar, H.H., 2008. Decolorization of dyes by microalgae. New Egypt J. Microbiol., 20: 24-40.
17. Omar, H.H., 2008. Biosorption of copper, nickel and manganese using non-living biomass of marine alga, Ulva lactuca. Pak. J. Biol. Sci., 11: 964-973.
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18. Omar, H.H., 2008. Algal decolorization and degradation of monoazo and diazo dyes. Pak. J. Biol. Sci., 11: 1310-1316.
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19. Khairy, H.M. and H.H. Omar, 2008. Effect of heavy metals on some metabolic activities of Jania rubens and Ulva lactuca from eastern harbour and Abu-Qir bay of Alexandria, Egypt. Egypt. J. Aquat. Res., 34: 114-129.
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20. El-Nagger, A.H., H.H. Omar, M.E. Osman and G.A. Esmail, 2007. Optimization of the released polysaccharides by Anabaena variabilis and Nostoc muscorum. Egypt J. Exp. Biol. (Bot.)., 3: 15-22.
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21. Osman, M.E.H., H.H. Omar, A.M. Abo-Shady and S.M.A. El-Shafay, 2006. Effect of nitrogen starvation on some metabolic activities of Oscillatoria acutissima Kufferath and Scenedesmus obliqous (Turp.) Kutz. with special reference to induced changes in fatty acids pattern. Egypt. J. Phycol., 7: 67-77.
22. Osman, M.H., A.H. El-Naggar, H.H. Omar and G.A. Esmail, 2005. Effect of cyanobacterial biomass and exopolysaccharides inoculations on soil enzyme activities. El-Minia Sci. Bulletin, 16: 73-86.
23. Osman, M.E.H., A. El-Naggar, H.H. Omar and G.H. Esmail, 2003. Distribution of different soil algal taxa in relation to physico-chemical characteristics of soil at Gharbia governorate. Egypt. J. Phycol., 4: 37-54.
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24. Omar, H.H., 2002. Bioremoval of zinc ions by Scenedesmus obliquus and Scenedesmus quadricauda and its effect on growth and metabolism. Int. Biodeterior. Biodegrad., 50: 95-100.
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25. EL-Sheekh, M.M. and H.O. Hafez, 2002. Effect of high salt stress on growth and fatty acids content of the unicellular green alga Chlorella vulgaris. Azhar J. Microbiol., 55: 181-191.
26. Amin, G.H. and H.H. Omar, 2002. Cyanobacterial exudates as a natural biotic source for tissue culture media. Egypt J. Biotech., 11: 190-205.
27. Omar, H.H., 2001. Nitrogen-fixing abilities of some cyanobacteria in sandy loam soil and exudate efficiency on rice grain germination. Bull. Fac. Sci. Assiut. Uni., 30: 111-121.