Abstract: A double rubber dam with the upper dam inflated by air and lower dam inflated by water is proposed in this paper. Large-scale physical hydraulic model tests are carried out to investigate the influence of the inflated air ...

Abstract: This paper presents a new analytical method that can calculate the load distribution on the thread teeth in cylindrical pipe threaded connection. The new method was developed by analyzing each ...

Abstract: The content of coalbed methane (CBM) is an important parameter that affects the performance of coal extraction and the safety of coal mines. The importance of this parameter is especially more pronounced when using the ...

Abstract: In the published literature, deflocculation of aerobic biological flocs under low dissolved oxygen (DO) (<0.5  mg/L) conditions is typically reported as occurring as early as after 1 h of oxygen deficiency. However, ...