Distribution characteristics of vegetation fires in border areas of China from 2001 to 2022 based on MODIS fire spot data.

Due to natural factors and influences from neighboring countries, wild fires frequently occur in China's border areas. To quantify the activities of wild fires in border areas, we analyzed the regime of wild fires within a 2 km buffer zone on both sides of China's land borders based on MODIS fire spot data, including fire types, fre-quency, seasonality, and spatial distribution. Between 2001 and 2022, a total of 25918 vegetation fires occurred in China's border regions, with forests, cropland, and grasslands accounting for 42.

Organic selenium resin in solid phase synthesis and its application in constructing medicinally relevant small organic molecules.

Heterocyclic compounds are of high importance in constructing active drug intermediates library. The emergence of solid-phase and combinatorial chemistry has led to renewed interest in using organoselenium resins to library drug-like production. In this mini review, we summarize the construction of heterocyclic compounds libraries such as isoxazoles, oxadiazoles, triazoles, pyrimidines, pyrrolines, indolines, benzopyrans, furans etc.