Liu Qing

TL;DR: In this article, researchers and practitioners are focusing greater attention on safety citizenship behavior (SCB) as an important factor in preventing injuries and improving workplace safety conditions; howe....

TL;DR: In this paper, an inner air curtain and an outer air curtain are used for controlling building blasting dust, the blasting dust is controlled mainly by the inner air curtains first so as to prevent from overflowing, secondary sedimentation is performed on the dust which is not controlled by the outer air curtains between the inner and outer aircurtain, and finally, the building spraying dust is located in the outer-air-curtain to prevent the dust from discharging.

TL;DR: In this article, a static force pressing-in device exerts pressure on a hollow connecting rod and a hollow drill bit are pressed into a drilled grouting hole, and two drill wings cut the pipe wall of the hole so that gaps can be formed.

TL;DR: In this article, a self-regulating flame-retardant polyurethane insulation material and a preparation method for its use in buildings is presented. But, the preparation method is not described.

TL;DR: In this article, a polyurethane curtain forming method capable of preventing a hole mold from being shrunk was proposed, which consists of the following steps: a bag base and a hollowdrill bit are relatively fixed, the hollow drill bit is sequentially and coaxially connected with a plurality of hollow drill rods, the outer circumferential face of each hollow drill rod is wrapped with a grouting bag, after the hollow drilling bit is pressed into a hole to form the hole mold, the bag base is separated from the drill bit through high-pressure air, meanwhile,