Abstract: Disclosed is a projector keystone correction method, including: obtaining first coordinate values of a plurality of position points on a projective plane through an RGBD (Red, Green, Blue-Depth) camera in a first coordinate system; determining second coordinate values of the position points according to a predetermined conversion relation and the first coordinate values in a second coordinate system; and using an included angle between a fitted plane obtained by fitting according to the second coordinate values of the plurality of position points and a coordinate plane of the second coordinate system to achieve keystone correction.

Abstract: The present invention relates to a mesylate or ethanesulfonate salt of the compound as represented by formula (I), a preparation method therefor, a pharmaceutical composition comprising the salt, and an application of the salt.

Abstract: Disclosed are a method for preparing a benzodioxole derivative (AD-35) shown by Formula (I) and an intermediate thereof. The method of the present invention involves: using piperic acid as a raw material; and performing bromination, esterification, cyanidation, cyclopropane lactamization, amide nitrogen alkylation, deprotection, piperidine nitrogen alkylation and salification to obtain the compound of Formula (I). The method has cheap and easily available start raw materials, short synthesis routes and simple operation, and is suitable for industrial production.

Abstract: Disclosed are a method for preparing a benzodioxole derivative (AD-35) shown by Formula (I) and an intermediate thereof. The method of the present invention involves: using piperic acid as a raw material; and performing bromination, esterification, cyanidation, cyclopropane lactamization, amide nitrogen alkylation, deprotection, piperidine nitrogen alkylation and salification to obtain the compound of Formula (I). The method has cheap and easily available start raw materials, short synthesis routes and simple operation, and is suitable for industrial production.

Abstract: Provided in the present invention are novel benzodioxole derivatives and preparation methods thereof. These compounds represented by formula (I) or pharmaceutically acceptable salts thereof have acetylcholinesterase inhibitory activity, so can be used in the treatment or prevention of Alzheimer's disease. The definitions of R1, R2 and A of formula (I) can be seen in the description.

Abstract: Provided in the present invention are novel benzodioxole derivatives and preparation methods thereof. These compounds represented by formula (I) or pharmaceutically acceptable salts thereof have acetylcholinesterase inhibitory activity, so can be used in the treatment or prevention of Alzheimer's disease. The definitions of R1, R2 and A of formula (I) can be seen in the description.

Abstract: Provided are a benzamide derivative as shown in formula (I) or a pharmaceutically acceptable salt thereof, and the preparation method and use thereof for preparing a medicine for treating cancer, wherein the group definitions of formula (I) are as set out in the description.

Abstract: Provided are a benzamide derivative as shown in formula (I) or a pharmaceutically acceptable salt thereof, and the preparation method and use thereof for preparing a medicine for treating cancer, wherein the group definitions of formula (I) are as set out in the description.