In the dissertation council for the educational programs 8D07101 "Mechanical Engineering", 8D07102 "Transport, transport machinery and Technology" and the specialties 6D071200 "Mechanical Engineering" and 6D071300 "Transport, transport machinery and Technology" at the Non-Profit Joint-Stock Company “Abylkas Saginov Karaganda Technical University”, the defense of the doctoral dissertation for the degree of Doctor of Philosophy (PhD) by Yermek Shuinshibekuly Dyussenbayev will take place. The dissertation is entitled “Design development and research of the modular ultrasonic muffler of a diesel engine” and is submitted under the educational program 8D07102 “Transport, transport machinery and Technology”.