Alhajri has published one book and more than 16 peer-reviewed papers in respected Journals and conference proceedings conducted in several international and local capitals and cites (e.g. London, Glasgow, Loughborough, Rome, Dubrovnik (Croatia), Chicago, Kobe (Japan), Brunei, Amman, Manama, Dubai, and many other countries) in the period between 2010 and 2020. Alhajri has taught the courses of graphic design, digital arts, 3D printing, and the arts of new multimedia for undergraduate and postgraduate students. Dr. Salman has also conducted many workshops and lectures on these fields for university students in both governmental and private universities inside and outside Oman. Moreover, he gave training for the university staff and other employees working in ministries and governmental institutions in Oman.