according to flexibility of pneumatic conveying systems with respect to other types of transmission systems, this system has wide application in industry and agriculture processes. one important application of this system is in the loading and unloading tankers and powdery bulk materials such as trucks carrying cement, plaster and sand. conveying efficiency is associated with pressure, which in...

An experiment was conducted to investigate the effect of screw speed, inclination angle and variety on the required power, and conveying capacity of a screw conveyor. The experiment was designed with four levels of screw speed (600, 800, 1000, and 1200 rpm), five levels of inclination angle (0, 20, 40, 60, and 80°), and three levels of variety (Alikazemi, Hashemi, and Khazar). The Length, diame...

The results of the construction inter-operational conveying devices for creation an automatic line mechanical processing a leather semi-finished product between several technological machines are considered in article. At same time, on this line, all must be feed-through ones. dimensions and principles operation mechanism shown. main mechanisms conveyor string conveyors, cutting pressure roller...

Abstract Narrative ability is an important life-skill and mature narrators do not only provide information about actions events when telling a story but also include the motivations, emotions beliefs experienced by protagonists. It rare for young children to spontaneously explain of characters reasons are unclear. In current study, frog data from 143 Swedish aged 4–6 showed that children’s leve...