High-resolution observation per 1.5 h revealed prominent time-dependent daily contamination variations of p-phenylenediamine (PPD) antioxidants and their quinone derivatives PPDQs in PM from central China.

p-Phenylenediamine (PPD) antioxidants and their quinone derivatives (PPDQs), as hot-spot novel contaminants in recent years, have been detected in air fine particulate matters (PM) in multiple regions. However, current research all discussed the pollution of PPDs and PPDQs based on the collected PM samples at least in one day (23.5 h).

Ultrafast, Robust, and Reversible Self-Assembled Nanofibers via Thiolactone Chemistry Strategy.

Self-assembly in supramolecular chemistry is crucial for nanostructure creation but faces challenges like slow speeds and lack of reversibility. In this study, a novel comb-like polymer poly(amide sulfide) (PAS) based on thiolactone chemistry is reported, which rapidly self-assemble into stable nanofibers, offering excellent robustness and reversibility in the self-assembled structure. The PAS backbone contains pairs of amide bonds, each linked to an alkyl side chain in a controlled 2:1 ratio.

Laennec approach for anatomical liver resection assisted by laparoscopy or robotics: a multicenter cohort study.

Introduction: Laennec's capsule serves as a critical anatomical landmark in anatomical liver resection. Despite its potential, a lack of large-scale prospective studies limits the widespread use of the Laennec approach for minimally invasive hepatectomy. This multicenter cohort study aimed to compare the outcomes of the traditional and Laennec approaches in minimally invasive anatomical hepatectomy across multiple centers in China.

Research Hotspots and Trends of RNA Research in Diabetic Retinopathy: Insights From Bibliometric Analysis.

Background: Research on RNA in diabetic retinopathy (DR) has received increasing attention in recent years. However, there is a lack of comprehensive and systematic research on the current status and future direction of RNA research in DR. Therefore, this study used bibliometric analysis to summarize the global trends and current status of DR RNA research to date.

Effect of Sr on Mechanical Properties and Corrosion Behavior of Rolled ZM60 Alloy.

Mg-6Zn-0.5Mn as a medical magnesium alloy has good biomechanical properties and corrosion resistance, but as a fracture internal-fixation material, its strength, toughness, and corrosion resistance still need to be improved. In this paper, the element Sr, having good biocompatibility, is used as an alloy element.