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To study the effect of chlorine dioxide fumigation on the preservation of postharvest broad beans, broad beans were fumigated with different concentrations of ClO2 (0, 15, 30 and 60 μL/L), stored at room temperature and evaluated for color difference, firmness, mass loss percentage, browning index and decay index after 0, 2, 4, 6 and 8 days. The results showed that compared to the control group, ClO2, at all concentrations tested, could inhibit the increase in mass loss percentage, browning index and decay index, and delay the decline in firmness, especially at a concentration of 30 μL/L. Furthermore, 30 μL/L ClO2 fumigation significantly reduced the respiratory intensity, inhibited chlorophyll degradation and malondialdehyde accumulation in broad beans during the 8-day storage period, suppressed the increase in superoxide anion generation rate and the accumulation of hydrogen peroxide, and maintained higher activities of superoxide dismutase (SOD) and catalase (CAT), suggesting that ClO2 fumigation could alleviate oxidative damage to the cell membrane. In addition, ClO2 treatment repressed the activities of polyphenol oxidase (PPO) and peroxidase (POD), maintained the activity of phenylalanine aminolyase (PAL) and the content of total phenols, and delayed the occurrence of browning. Moreover, ClO2 treatment increased the contents of vitamin C, soluble protein and starch, and inhibited the increase of the reducing sugar content in broad beans (P < 0.05), thus maintaining better quality of broad beans. In conclusion, 30 μL/L ClO2 fumigation effectively maintained the edible value of broad beans and improved the storage quality while enhancing the antioxidant capacity.

There are a large number of earthquake networks under the management of cities and counties，which have made historical contributions to reducing earthquake disasters and promoting the development of earthquake prevention and disaster reduction. In recent years，the development of earthquake networks managed by cities and counties lags behind the development level of the same industry，exposing problems such as unclear positioning，low efficiency and cognitive deviation. Taking Yangzhou Earthquake Networks Center as an example，the advantages and disadvantages before and after the institutional reform in 2019 are summarized and compared. The objectives and tasks of the modernization development of earthquake prevention and disaster reduction are combined. In order to promote the development of work，this paper puts forward suggestions from four aspects：self-orientation，work implementation，coordination of multiple relationships，scientific understanding of reform and development.

Up to 40% non-small cell lung cancer patients developed brain metastasis during progression. Multiple brain metastases are common in non-small cell lung cancer. The prognosis of brain metastasis is poor with median survival of less than 1 year. Radio therapy for brain metastases has gradually developed from whole brain radiotherapy (WBRT) to various radiation strategies. WBRT, surgery+WBRT, stereotactic radiotherapy+WBRT or WBRT with simultaneous integrated boost (SIB), etc. have better overall survival than those untreated patients. The damage of the cognitive function from WBRT has been realized recently, however, options of radiation strategies for long expected survival patients remain controversial. This paper will discuss different WBRT strategies and treatment side effects of non-small cell lung cancer with brain metastases.

With the development of radiation technology, stereotactic body radiation therapy (SBRT) has been widely used in early stage non-small cell lung cancer (NSCLC). It is not only the standard therapy for medically inoperable early-stage NSCLC, but also one of the therapies for operable early-stage NSCLC. Radiation pneumonitis (RP) is one of the most common adverse effects after SBRT, it may reduce the patients’ quality of life, even cause treatment failure. Therefore, in order to improve the patients’ quality of life and enhance local control rate of tumor, it is important to reduce the risk of RP. The unique fractionation schemes and the dose distribution of SBRT make it not only different from conventional fraction radiation therapy in treatment outcomes, but also in the incidence of radiation pneumonitis. This article reviews the applying of SBRT for early stage NSCLC, the incidence of radiation pneumonitis, radiological appearance after SBRT and predictive factors.