Hierarchically structured Ni(OH)₂particles with a well-defined flower-like morphology were synthesizedviaa hydrothermal route.

Dual-functional air filter paper with addition of Zr(OH)₄was prepared by an intra-pulp addition method, whose filtration performance is maintained while the decontamination performance is added for HD and VX.

By using the GPS-X software, the enhanced phosphorus removal (EPR)process was simulated in this study. The comparisons among nitrogen and phosphorus removal efficiency of traditional A²/O process, University of Cape Town (UCT) process, Modified University of Cape Town (MUC) process and inverted A²/O process were conducted, in order to determine the best process under the same conditions of construction investment and running cost. The results showed that the simply reversed A²/O process exhibited poor total phosphorus (TP) removal efficiency under low carbon level. The effluent water qualities of the other three processes under low, medium and high levels of carbon source met the first B level criteria in Discharge Standard of Pollutants for Municipal Wastewater Plan (GB18918-2002) for China. The ranges of removal efficiencies of TP, TN, NH₄ ⁺-N and COD were 63.15% ∼ 94.91%, 55.38% ∼ 77.89%, 96.91% ∼ 97.70% and 90.89% ∼ 93.66%, respectively. Denitrifying phosphorus removal occurred in anoxic tank of EPR process. The phosphorus accumulation concentration was 6.91 mg/L, and the maximum phosphorus released in anaerobic tank was 24.01 mg/L, and the higher P release gave the EPR process a high P removal effiency. Except for the TN which met the first B level criteria (GB18918-2002), TP, NH₄ ⁺-N and COD met the first A level criteria GB18918-2002), above that, the process was feasible. Inverted A²/O process exhibited the highest nitrogen removal efficiency for its sufficient carbon source in anoxic tank.

Occurrence of large-scale biochemical wars is of little possibility today, but the international chemical security situation is still not optimistic. Effective decontamination of chemical warfare agents has received close attention, becoming a global necessity. In this paper, data in the Web of Science Core Collection database were selected to systematically investigate the relevant literature about the research progress on decontamination of chemical warfare agents from 1990 to 2020. Origin Pro 2019b and CiteSpace were conducted for multi-dimensional bibliometric analysis on literature type distribution, number of annual publications, countries, institutions, journals, authors, literature co-citation and citation bursts. By August 1, 2020, there are 2,602 papers related have been published and the number of annual publications shows a linear growth tendency. Amongst all 71 countries, United States is the country with the most publications as well as the largest centrality value. US ARMY ranks fourth in the number of publications while with the highest institution-based cooperation. “Nerve agents and blister agents”, “metal-organic frameworks” and “applications of metal-organic frameworks” are prevailing in recent years, which highlights the latest development direction and research frontiers. This article promotes scientific predictions and impact assessments of decontamination of chemical warfare agents.

This paper constructs a theoretical framework for the impact of financial technology on the systematic risk of traditional financial institutions from five perspectives: the correlation effect, technical effect, transmission effect, competition effect, and the regulatory lag effect. Based on the framework constructed, we selected data from 36 listed financial institutions in China to investigate the relationship between financial technology and traditional financial institutions' systematic risk. The results we obtained were: 1) financial technology has an inverted-U relationship with the systematic risk of traditional financial institutions; 2) currently, China's traditional financial institutions are still in the left half of the inverted-U curve, and the development of financial technology is promoting the accumulation of systematic financial risks, and 3) the larger the size of traditional financial institutions, the smaller the impact of financial technology on systematic risk, and the more lagging the impact is.