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Objective: Establish a computer model for predicting the inactivation of Zygosaccharomyces rouxii in apple juice by surface discharge plasma (SDP). Methods: The numerical simulation software COMSOL multiphysics was used to model SDP inactivation of Z. rouxii LB. The inactivation efficiency was evaluated under different conditions of discharge voltage, bubble size and sample volume. The model was then validated. Results: SDP was highly effective in deactivating hyperosmotic-resistant yeast in apple juice. The reaction rate coefficient decreased with an increase in the initial concentration of bacteria. Furthermore, the increase in discharge voltage shortened the time needed to inactivate yeasts. Bubble size variations had no significant effect on the inactivation of Z. rouxii LB, and the inactivation time was prolonged with increasing sample volume. The model simulation results agreed with the experimental data.

A rapid in situ synthesis of electrochromic covalent organic frameworks (EC‐COFs) was proposed by using green electrochemical interface polymerization of N,N,N',N'‐tetrakis(4‐aminophenyl)‐1,4‐benzenediamine (TPDA) and 2,5‐dihydroxyterephthalaldehyde (DHBD). The synthetized TPDA‐DHBD films exhibit stable polymorphic color variations under different applied potentials, which can be attributed to the redox state changes of bis(triphenylamine) and imine electroactive functional groups within the COFs skeleton. TPDA‐DHBD represents markedly different electrochromisms from red to cyan due to the steric hindrance effect caused by the presence of UO22+, demonstrating the unique tunability of COFs materials. This work offers a new feasible idea for rapid EC‐COFs synthesis and tunable EC‐COFs realization. [ABSTRACT FROM AUTHOR]

Embracing strategies that circumvent the complexities and disordered structures of electrochemiluminescence (ECL) emitters to improve charge transfer efficiency is crucial for advancing ECL technology to the forefront. Here, heteroatom-involved cocrystal engineering was introduced, constructing an ECL system with controllability of the charge transfer process. Through the mutual recognition and coassembly between functional monomers, highly ordered cocrystal superstructures are formed. The layered donor-acceptor arrays in cocrystals accelerated charge transfer, producing a remarkable ECL performance. Furthermore, distinct heteroatoms possess the capability to modulate the charge distribution of monomers by either pushing or pulling electrons. This modulation ultimately affects the charge transfer pathways within cocrystals, enabling ECL emissions of varying intensities and wavelengths. Notably, the presence of UO 2 2+ would significantly inhibit the charge transfer in cocrystals, causing a quenching of ECL signal. This unique characteristic enables precise and selective detection of UO 2 2+ . The heteroatom-involved cocrystals hold immense potential to construct next-generation ECL emitters and create fresh opportunities for the advancement of ECL technology.

The concentrations of atmospheric pollutants PM 2.5 , O 3 , SO 2 , NO 2 , and CO together with the meteorological factors of temperature （ T ）, relative humidity （RH）, wind speed, and other relevant data in Tangshan from 2015 to 2021 were collected to study the variation characteristics of PM 2.5 and O 3 at different periods in Tangshan City in the past seven years and their influencing factors, to discuss the contributions of air mass transport to PM 2.5 and O 3 pollution, and to reveal the synergistic influence mechanism of PM 2.5 and O 3 on atmospheric compound pollution by using correlation analysis and backward trajectory cluster analysis techniques. The results showed that PM 2.5 concentrations in Tangshan decreased year by year from 2015 to 2021, whereas O 3 concentration showed a unimodal trend, with the peak appearing in 2017. Both PM 2.5 and O 3 concentrations showed obvious seasonal variation trends； PM 2.5 was characterized by the highest concentration in winter and the lowest concentration in summer, whereas O 3 was characterized by the highest concentration in summer and the lowest concentration in winter. In addition, the diurnal variation in PM 2.5 showed a bimodal distribution, with the peak occurring during the morning and evening on weekdays, and O 3 showed a unimodal distribution, with the peak value appearing during the period with strong ultraviolet radiation in the afternoon. PM 2.5 had a significant positive correlation with SO 2 , NO 2 , and CO, whereas O 3 had a significant positive correlation with radiation and temperature. Under the different pollution conditions, PM 2.5 and O 3 were affected by air mass transports from different directions. Being impacted by various factors, the synergistic effect of PM 2.5 and O 3 on atmospheric compound pollution showed an obvious negative effect in winter, whereas there was an obvious positive effect in spring, summer, and autumn. Under the backgrounds of different pollutions, when the concentration of PM 2.5 exceeded 150 μg·m -3 , the synergistic effect of PM 2.5 and O 3 showed an obvious negative effect.