Promoting the use of zero-emission vehicles is an important measure for reducing pollutant and carbon dioxide emissions from medium- heavy-duty trucks (MHDTs). This study took Hainan Island as example. Based on big data such industrial layout traffic flow, it clarified that main channels freight transportation are concentrated in northern region, including surrounding areas Haikou; ports Haikou...

BACKGROUND Evidence shows exposure to ambient air pollution during pregnancy was associated with an increased risk of adverse birth outcomes, such as preterm birth, low birth weight and intrauterine growth retardation, but the results for birth defects have been inconsistent. METHODS The data on birth defects was collected from the Birth Defects Monitoring Network of Haikou city. Air pollutio...

Detailed description of spatio-temporal framework fossil-bearing strata is fundamental significance for understanding the evolution organisms and regional tectonics. The Qujing Haikou formations are two lithological units exposed in eastern Yunnan, southwestern China, both bear rich fossils indicative a Middle Devonian age, while their relationship or lateral correlation remains unclear. Based ...

As global warming exacerbates and urbanization accelerates, extreme climatic events occur frequently. Urban waterlogging is seriously spreading in China, resulting a high level of vulnerability urban societies economies. It has been urgent for regional sustainable development to effectively identify analyze the risk factors behind waterlogging. A novel model incorporating satellite image semant...

In recent years, Klebsiella pneumoniae strains have become the second largest bacteria after the E. coli in China causing community-acquired infections and nosocomial infection [1]. The K. pneumoniae strains commonly recognized by clinicians and microbiologists are termed classic K. pneumoniae (cKP). Such strains are notorious for their capacity to cause nosocomial infections Detection and Anal...

Bo Yang1, Xuesong Bai1, Yijun Yu1, Honglan Liu1, Cheng Lan2, Dan Liu3 and Xuchun Zhou3* 1Department of Gastroenterology, Dazhou Central Hospital, Dazhou, China. 2Department of Gastroenterology, Hainan Provincial People′s Hospital, Haikou, China. 3Department of Gastroenterology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China. *Corresponding author: Dr. Xuchun Zho...

*Correspondence: [email protected] 1College of Science, Hohai University, Nanjing, 210098, China 2Department of Mathematics, Hainan University, Haikou, 570228, China Full list of author information is available at the end of the article Abstract We study the existence and multiplicity of positive periodic solutions for second-order nonlinear damped differential equations by combing the analysis ...

BACKGROUND Aedes albopictus is distributed widely in China, as a primary vector of Dengue fever and Chikungunya fever in south of China. Chemical insecticide control is one of the integrated programmes to prevent mosquito-borne diseases. Long-term applications of pyrethroids have resulted in the development of resistance in Ae. albopictus populations in China. However, the susceptibility of Ae....