The researcher Omar Ali Bazgifan, who had Master of Mathematics and is affiliated with Hadhramout University, was appointed as a certified researcher at the International Institute (Vision Science Research) for Scientific Research and as a supervisor of the Delayed Differential Equations Project. In addition, he was appointed as a reviewer in the American Journal. It is noteworthy that the researcher has published one of his research “Conditions of Delay Nonlinear Differential Equations ” in the German Publishing House LAP LAMBERT Academic Publishing in Mathematics field and the main objective of this research is to highlight many differential equations of the fourth and higher orders. It is worth mentioning here that the fourth-order equations are of interest to researchers to obtain new results. To see the research: (https://www.morebooks.de/store/gb/book/oscillation-criteria-for-nonlinear-delay-differential-equation/isbn/978-620-2-05288-7)