Spatiotemporal modeling and projection framework of rainfall-induced landslide risk under climate change.

Global warming is expected to exacerbate extreme rainfall events, potentially increasing the risk of landslides. While landslides have been extensively studied, much of the focus has been on developing static frameworks for landslide susceptibility, with relatively little exploration of spatiotemporal modeling. Furthermore, previous studies have often overlooked the spatiotemporal impacts of climate change and dynamic socio-economic factors on landslide susceptibility and risk.

Copper-Catalyzed Dearomative [3 + 2] Annulation of Indoles with 2-Iodoacetic Acid.

An efficient copper-catalyzed dearomative [3 + 2] annulation of indoles with 2-iodoacetic acid is developed. By employing Cu(OTf)/2,2'-bis(2-oxazoline) as the catalyst and LPO as the oxidant, a series of indoline-fused butyrolactones were synthesized in moderate to good yields. The reaction features mild conditions, a broad substrate scope, and readily available starting materials.

Study of the in situ test setup and analysis methods for self-healing properties of metallized film capacitors.

Metallized film capacitors (MFCs) are widely used in the power electronics industry due to their unique self-healing (SH) capability. SH performance is an essential assessment for MFC reliability verification in industrial production. The SH phenomenon of metallized films usually occurs rapidly in a very short period, and its real-time evolution details are often difficult to capture and analyze.

[Field measurement of soil mercury emission in a Masson pine forest in Tieshanping, Chongqing in Southwestern China].

To investigate soil mercury emission characteristics in areas with high atmospheric mercury concentration, the soil-air exchanging flux of gaseous elemental mercury (Hg0) was measured for four seasons from September 2012 to July 2013 in a Masson pine forest of Tieshanping, Chongqing in Southwestern China using a dynamic flux chamber and a LUMEX RA-915+ mercury analyzer. The effects of ambient air mercury concentration and environmental factors, such as radiation intensity, air temperature, air humidity, soil temperature, and soil water content, on exchanging flux were also studied. Results showed that there was obvious seasonal variation of the Hg0 exchanging flux, with the highest value of 35.

[Influencing factors of mercury emission flux from forest soil at Tieshanping, Chongqing].

To study the effect of environmental influencing factors on soil mercury emissions, intact surface soil samples (0 to 5 cm) were collected from a Masson pine forest in Tieshanping, Choningng to conduct controlled experiments, and soil mercury emission flux was measured by dynamic flux chambers under different conditions. The results showed that the mercury emission significantly increased with the enhancement of solar radiation, air temperature, and soil water content. The mercury emissions in sunlight were 3 to 9 times higher than those in shade, but the latter condition should be more similar to the actual condition in the field.