Abstract: Disclosed is a compound of formula (I) or a pharmaceutically acceptable salt, prodrug, tautomer or stereoisomer, and solvate thereof. The compound can be applied to treatment of cancers and inflammations of mammals. Further disclosed are a preparation method for the compound of formula (I) and a pharmaceutical composition containing the compound.

Abstract: A positive active material, a secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The positive active material includes a spinel-type lithium-manganese-containing composite oxide with a molecular formula of Li1+xAaMbXcMn2?a?b?c?xO4?t. In the molecular formula: A is a doping element for a manganese site of the spinel-type lithium-manganese-containing composite oxide; M is used for combining with O to form a second phase containing a polyoxyanion, and M includes one or more of B, C, N, Si, P, S, or Cl; X includes one or more of Mg, Al, Si, Ca, Sc, Ti, Cr, Fe, Co, Ni, Cu, Zn, or Zr; and the molecular formula satisfies: ?0.1?x?0.3, 0<a?0.2, 0<b?0.2, 0<c?0.7, and 0?t?0.2.

Abstract: A method for multi-dimensional identification of flexible load demand response effects, including: step 1. determining a target object, a target area and a demand response project that participate in the multi-dimensional identification of flexible load demand response effects; step 2. acquiring flexible load evaluation data of the target area and the target object; step 3. performing data cleaning; step 4. preprocessing the flexible load evaluation data; step 5. constructing four characteristic extraction indicators, a peak load reduction rate, a peak-to-valley difference ratio, a load factor ratio and a response status, inputting a predicted value and an actual collected value of maximum and minimum daily loads before and after the flexible load demand response that are obtained from the prepossessing, to generate a matrix for clustering; step 6. clustering the matrix for clustering generated in step 5; step 7. guiding a more targeted development of demand response projects.