Firstly I would like to thank you, professor Edward Charles, who invited me to participate in this rich webinar in kind and the quality of the researcher's professors and students, I am delighted to be with you in this webinar. So the efforts made in the success of the previous edition '' Oil and Gas Technology'' and also the topic is chosen by the committee on the three disciplines chemistry, physics and biology green a great an exchange of the ideas between researchers in the world. The most beautiful greeting and most important terms of appreciation of Professor Edward Charles, the organizing and scientific committee, and also for the participants who have enriched this webinar in scientific production, Despite the conditions of the coronavirus pandemic that the world knows.
Hammadi El Farissi, Mohamed First University, Morocco