Shanghai Public Security Bureau

Unraveling the spatial heterogeneity of urban traffic crashes: A GeoXGBoost and point-mapping SHAP framework

Objectives In urban traffic risk research, traditional models struggle to simultaneously capture the complex nonlinearity and spatial heterogeneity of risk-driving factors, while often lacking fine-grained spatial interpretability. To address these limitations, this study develop...

Construction of Polydopamine@Crosslinked Polystyrene Core/Shell Polymeric Support for the Immobilization of Silver Nano‐cluster: Adsorption and Selective Reduction of p‐Chloronitrobenzene

ABSTRACT Polymers are promising catalyst supports because of their tunable composition and facile functionality. In this work, a core/shell polydopamine@crosslinked polystyrene support (XP‐PDA) was first constructed, and silver nano‐clusters were subsequently immobilized via in s...

Genetic origin and forensic analysis of han populations from four districts in Shanghai, China, based on Y-chromosome STR and SNP markers

Y-short tandem repeats (STRs) and Y-single nucleotide polymorphisms (SNPs) on the Y chromosome are genetic markers unique to men. They are widely used in identification, forensic medicine and paternal lineage tracing. Because of their strict paternal genetic characteristics, they...