Abstract: A public event administrating system is disclosed. The public event involves a plurality of individuals and the administrating system includes: a data collecting module, a data processing module, a medical resource scheduling module, and a grid administrating module. The data collecting module is configured to acquire initial data about the public event from a plurality of data sources. The data processing module is configured to process the initial data to acquire processed data. The medical resource scheduling module is configured to receive an individual service request and allocate currently available medical resources to an individual requesting service at least according to the individual service request. And, the grid administrating module is configured to divide a geographic region managed by the administrating system into a plurality of grids, and assign a plurality of grid administrators to the plurality of grids to respectively administrate individuals in the plurality of grids.

Abstract: The present disclosure belongs to the technical field of sewage treatment, and relates to a preparation method and use of a cobalt nanoparticle/boron nitride composite. The preparation method includes the following steps: dissolving 2-methylimidazole and boric acid in deionized water, and stirring to obtain a solution A; dissolving Co(NO3)2·6H2O and Zn(NO)3·6H2O in deionized water, and conducting ultrasonic dispersion to obtain a solution B; transferring the solution B into the solution A, and stirring to form a clear and transparent solution; transferring the clear and transparent solution into a container lined with Teflon, and conducting a reaction; subjecting an obtained product to cooling, filtration, washing, and drying sequentially to obtain a precursor of the composite; and conducting roasting on the precursor in an ammonia gas atmosphere to obtain the cobalt nanoparticle/boron nitride composite with a spherical superstructure.