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For effectively detect and estimate the performance of various electric energy measuring devices, this paper proposes an integrated intelligent detection platform for the electric energy measuring device, which includes detection hardware, software and a good communication between hardware and software. With the study on the power system, communication circuit, voltage and current loop, data processing executive board and carrier communication, the hardware of integrated intelligent detection platform is designed. It also gives the software framework of detection platform and the design of information interaction for software and hardware. The integrated intelligent electric energy measuring device can greatly save time and improve detection efficiency.

This paper aims to effectively detect and estimate the performance of various electric energy measuring equipments. We develop an intelligent detection platform for the electric energy measuring equipment which includes detection software, data storage, intelligent protocol library, virtual network and alarm program. By designing the intelligent protocol library and virtual network, data from different kinds of acquisition terminals can be collected by the proposed intelligent platform. Compared with the conventional electric energy measuring equipment, the intelligent electric energy measuring equipment can greatly save time and improve detection efficiency.

In the context of the ongoing epidemic, cities face significant challenges due to their high density, lack of public services, and inadequate health care resources, and the ‘15-minute city’ can provide a turnaround. This paper explores how ‘15-minute cities’ can help cities cope with the epidemic in terms of accessibility, crowd reduction, and public service provision. At the same time, the paper takes Beijing as an example, and through the creation of a ‘buffer zone’ and kernel density analysis of poi data, finds that the construction of ‘15-minute cities’ or ‘15-minute living circles’ in Beijing is lacking in the suburbs, where people need to enter the city centre to access public services and goods, leading to unnecessary congestion. This leads to unnecessary congestion and congestion. Finally, three types of ‘15-minute neighbourhoods’ are explored. Through analysis, this paper finds that larger, enclosable neighbourhoods are the most appropriate for Beijing’s future, particularly in the case of suburban expansion.

Under the new development pattern of dual circulation economy, the reform of state-owned enterprises has entered the deep water area, and the operating environment of power grid enterprises has changed significantly, which has a profound impact on the capital operation strategy and effect of the enterprises. This paper analyzes the new characteristics of capital operation of power grid enterprises under the new development pattern, constructs the incentive and restriction index system of capital operation of power grid enterprises, designs the incentive and restraint mechanism of capital operation of power grid enterprises, and verifies the scientificity and applicability of the mechanism by financial evaluation and analysis. The research results enrich the theory of capital operation management based on financial evaluation, and provide theoretical basis and practical reference for grid enterprises to optimize the distribution of capital investment and improve the efficiency of capital operation.

To decrease the cost of Ti sponge, Ti scrap is added during the remelting process to produce an ingot. However, the use of Ti scrap as an additive during this process is limited because Ti scrap is contaminated by oxygen (O) and iron (Fe), which are not removable during the remelting process. Here we introduce a new electrochemical deoxidation process for Ti scrap using a mixture of magnesium chloride (MgCl2) and rare-earth chlorides (RECl3, RE: Y and Ho) as a flux. Ti and carbon were used as the cathode and anode, respectively. Mg is deposited on the Ti cathode and reduces the oxygen in the Ti to oxide ions (O2). The activity of the generated O2” in the system, aQi-, is maintained at a low level through the formation of rare-earth oxy chloride (REOCl), and is further decreased by the formation of carbon oxides on the anode. During this process, the concentration of oxygen in the Ti is effectively decreased to 100 mass ppm in the MgCl2-YCl3 flux at 1,200 K. This new deoxidation method is considered applicable to the recycling process of Ti scrap containing large amounts of oxygen.