Fate and ecological risk of legacy and emerging POPs in coastal waters in China.

Short-chain chlorinated paraffins (SCCPs) and dechlorane plus (DPs) are persistent organic pollutants of emerging concern, however, little is known of their fate and ecological risks in coastal waters compared to legacy contaminants in marine environment. Here, we analyzed SCCPs, 2 DP isomers as well as legacy contaminants including 24 organochlorine pesticides and polychlorinated biphenyls (PCBs) in seawater from Hangzhou Bay (HZB) and Liaodong Bay (LDB) for comparison using GC-Orbitrap MS. The total contaminant load in seawater was dominated by SCCPs with the highest detection frequency, in concentrations ranging from 25.

Real-Time Time-Dependent Density Functional Theory Study of Inelastic Electron Scattering: Energy Transfer in Tetracarbonyl Nickel Molecule Reactions.

Inelastic scattering between electron wave packets and precursor organometallic molecules is key to understanding electron-induced excitation in gas-phase and surface chemical reactions. This study focuses on the scattering process and subsequent intramolecular dissociation of electronically excited molecules. Using Ni(CO), the precursor in electron-enhanced atomic layer deposition for nickel thin film growth, real-time time-dependent density functional theory (TDDFT) models the energy transfer and internal excitation of the 0-700 eV electron wave packet colliding with Ni(CO).

Integrating biplane information and context for spine landmark detection.

Spine landmark detection is of great significance for spinal morphological parameter assessment and three-dimensional reconstruction of the human spine. This detection task generally involves locating spine landmarks in the anterior-posterior (AP) and lateral (LAT) X-rays of the spine. Recently, the two-stage methods for AP spine landmark detection achieve better performance.