[Driving Forces and Mitigation Potential of CO Emissions for Ship Transportation in Guangdong Province, China].

Ships are important sources of carbon dioxide (CO) emissions in Guangdong Province. The study of historical evolutions, drivers, and projected pathways of CO emissions can provide scientific support for the development of carbon peaking and carbon neutral strategies in Guangdong Province. The emission factor method, log-average index (LMDI) method, and scenario analysis method were adopted to estimate CO emissions, identify the drivers, and explore the mitigation potential from ships in Guangdong Province, separately.

Comparison of emergency cholecystectomy and delayed cholecystectomy after percutaneous transhepatic gallbladder drainage in patients with acute cholecystitis: a systematic review and meta-analysis.

Laparoscopic cholecystectomy and percutaneous transhepatic gallbladder drainage (PTGBD) are common treatments for patients with acute cholecystitis. However, the safety and efficacy of emergency laparoscopic cholecystectomy (ELC) and delayed laparoscopic cholecystectomy (DLC) after PTGBD in patients with acute cholecystitis remain unclear. The PubMed, EMBASE, and Cochrane Library databases were searched through October 2019.