Single Catalyst with Dynamic Ligands Enabled Synthesis of Olefin Block Copolymers.

Olefin block copolymers (OBCs) are among the most advanced classes of polyolefins, produced in large quantities as part of the approximately 200 million tons of polyolefins produced annually. However, current OBCs manufacturing relies on a complex, costly, two-catalyst process that requires hazardous chain shuttling agents. A more efficient approach using a single catalyst for the synthesis of the OBCs is highly desirable but remains significantly challenging.

2,4-Epibrassinolide Regulates Polysaccharide Substance Biosynthesis after Field Application to .

This study investigated the effects of 2,4-epibrassinolide (EBR) residues on quality. The residues decreased from 0.164 to 0.

Risk factors for nosocomial infections in patients receiving extracorporeal membrane oxygenation supportive therapy.

Background And Objective: The aim of this study was to analyze risk factors for nosocomial infection (NI) in patients receiving extracorporeal membrane oxygenation (ECMO) support.

Patients And Methods: Clinical NI data were collected from patients who received ECMO support therapy, and analyzed retrospectively.

Results: Among 75 ECMO patients, 20 were found to have developed NI (infection rate 26.