Abstract: The present disclosure discloses a method for preparing a hierarchical porous material for a molecular sieve with an MFI structure. In the present disclosure, porous silicon dioxide is used as a carrier on a surface of which a nano zeolite seed is loaded, and then subjected to treatment with a secondary growth compound fluid and hydrothermal crystallization, so that a nano zeolite molecular sieve membrane is further grown on the surface of the porous silicon dioxide. The specific surface area and pore volume of the hierarchical porous material for the molecular sieve with the MFI structure prepared by the present disclosure are greatly improved compared with those of the original porous silicon dioxide. The material not only has the macroporous structure of the porous silicon dioxide, but also incorporates micropores of the molecular sieve itself and mesopores formed by molecular sieve agglomeration.

Abstract: For the problem of difficult roof anchor withdrawal at the end of a working face, a static crushing directional anchor withdrawal method at the end of a large-mining-height working face is provided. The method includes the following steps: designing key parameters of boreholes for static crushing, including a borehole position, a spacing between boreholes, a borehole depth, and a borehole diameter at the end of a working face; then determining parameters of a static crushing agent grouting technology device for the construction of a static crushing process; and carrying out an anchor withdrawal operation at the end.

Abstract: Provided are a tricyclic compound as shown in formula (I) as a CRTH2 inhibitor, or a pharmaceutically acceptable salt, a tautomer, a stereoisomer or a solvate thereof, and the use thereof in treating diseases related to CRTH2 receptors.

Abstract: Provided are a tricyclic compound as shown in formula (I) as a CRTH2 inhibitor, or a pharmaceutically acceptable salt, a tautomer, a stereoisomer or a solvate thereof, and the use thereof in treating diseases related to CRTH2 receptors.

Abstract: The present disclosure relates to a field stage lighting, in particular to an LED projection lamp. The LED projection lamp includes an optical lens cover, a first aluminum substrate, a second aluminum substrate, and a first housing. A first glass lens bracket, a glass lens, and a second glass lens bracket are respectively arranged on an upper end of the first aluminum substrate. A water ripple sheet is arranged on a lower end of the first aluminum substrate. Condensing lens is arranged on an upper end of the second aluminum substrate. A motor is arranged on a lower end of the second aluminum substrate. A second housing is arranged on a lower end of the first housing.

Abstract: The present application discloses an indole as represented by formula (I) used as a CRTH2 inhibitor, and a pharmaceutically acceptable salt or tautomer of the indole, and an application of same in treating a disease related to a CRTH2 receptor.

Abstract: The present application discloses an indole as represented by formula (I) used as a CRTH2 inhibitor, and a pharmaceutically acceptable salt or tautomer of the indole, and an application of same in treating a disease related to a CRTH2 receptor.