Abstract: A pyrrolo[2,3-d]pyrimidine derivative targeting EGFR mutations, as well as the preparative method and the use thereof are provided. The derivative is a compound of formula I, or a salt thereof, or a stereoisomer thereof. It has low toxicity to normal cells and has a significant inhibitory effect on lung cancer cell lines, especially has good selectivity and significant inhibitory effect for EGFR-mutant HCC827 cells, against the phosphorylation of EGFR, and against mutant EGFR. It can be used to treat lung cancer, especially non-small cell lung cancer and can also be used to prepare tyrosine kinase inhibitors, especially the inhibitors of EGFR phosphorylation.

Abstract: A sports bra shock absorption effect evaluation method includes: allowing a subject to wear a sports bra for an experimental test, adhering a total of 43 infrared reflective mark points on the body, and completing preparation; allowing the subject naturally to stand on a treadmill, and acquiring static coordinate data; starting the treadmill, acquiring dynamic coordinate data for 5 minutes in sports when a speed in sports reaches 6-12 km/h, and immediately asking a subjective perception of the subject after doing sports; converting the dynamic coordinate data into coordinate data in which a thoracic vertebra point is defined as an origin, and calculating a square root index S of displacement amplitude data in the left-right direction and the up-down direction; and numerically sorting the displacement amplitudes according to the square root index S, and corresponding to subjective perceptions one by one to obtain hierarchical definitions for an existing bra.

Abstract: The invention involves a vibrating inclined plate box settlement separator, which is used for the liquid-solid separation, particularly applicable to high-efficiency settling concentration and separation of solid particles from liquid or water. The separator consists of an upper box and a lower tapered hopper. The upper box and the lower tapered hopper are connected securely to each other and sealed. The upper box is a rectangular or square steel-structured box with two supporting platforms on both of its sides, on which several spring assemblies are installed. The inclined plate box modules which can independently vibrate are installed on the spring assemblies. The feed box is placed on top of or inside the upper box. An overflow collect chute is welded on the side of the box frame opposite to the feed box.

Abstract: The invention involves a vibrating inclined plate box settlement separator, which is used for the liquid-solid separation, particularly applicable to high-efficiency settling concentration and separation of solid particles from liquid or water. The separator consists of an upper box and a lower tapered hopper. The upper box and the lower tapered hopper are connected securely to each other and sealed. The upper box is a rectangular or square steel-structured box with two supporting platforms on both of its sides, on which several spring assemblies are installed. The inclined plate box modules which can independently vibrate are installed on the spring assemblies, The feed box is placed on top of or inside the upper box. An overflow collect chute is welded on the side of the box frame opposite to the feed box.