[Effects of different tillage measures on soil organic carbon in dryland wheat fields on the Loess Plateau, Northwest China based on meta-analysis].

To evaluate the effects of tillage measure on soil organic carbon (SOC) and influence degree of various factors on relative change rate of SOC at regional scale, we conducted a meta-analysis to investigate the impacts of tillage measures (CK, traditional deep tillage without straw return; NTS, no tillage with straw return; NT, no tillage without straw return; TS, traditional tillage with straw return; SS, subsoiling tillage) on SOC content and influence factors (climate conditions, soil types, cultivation types, and initial soil physicochemical properties) on relative change rate of SOC in dryland wheat fields on the Loess Plateau, based on literatures published during 2000-2023. Results indicated that NT, NTS, SS and TS performed varies positive effect on SOC content in 0-20 cm soil layer compared with CK. In addition, greater enhancement of SOC were obtained in conditions of loessal soil, mid-temperate zone, average annual temperature of ≤10 ℃ and average annual rainfall of ≤500 mm.

Efficient CO photoreduction using a water-soluble conjugated polyelectrolyte grafted imidazolium-functionalized side chain.

Herein, we reported the development of a water-soluble conjugated polyelectrolyte (CPE) for efficient CO photoreduction under visible light ( > 420 nm). Bearing a fluorene-benzothiadiazole backbone and imidazolium-functionalized side chains, PFBT-Im exhibits remarkable photocatalytic activity with nearly 100% selectivity and a CO yield of 453.16 μmol g within 4 h, which is 8.

Multi-omics analysis of soil microbiota and metabolites in dryland wheat fields under different tillage methods.

No-tillage and subsoiling can improve soil aggregate structure and realize a synergistic effect of soil carbon and nitrogen retention compared with deep tillage. This study aimed to investigate the effects of different tillage methods on the microbiome and metabolites in wheat rhizosphere. Results indicated that no significant differences in the diversity of soil bacterial and fungal communities were observed among the tillage methods.

Stacking Transformation-Triggered Circularly Polarized Luminescence Reversion in γ-Cyclodextrins-Pyrene Co-Assembly.

Considerable attention has been directed towards cyclodextrins (CDs) in the creation of co-assembled CPL-active materials, owing to their intrinsic chiral host cavities and synergistic host-guest interactions. However, achieving reversed CPL emission regulation with single-handedness CDs moiety poses a significant challenge. In this study, we have devised a series of γ-CD-based host-guest complexes comprising dual pyrene imidazolium derivatives with multiple linkers, which exhibit reversed circularly polarized emission.