The Ferrite Layer on the Surface of Carbon Steel Obtained by Precisely Designed Cooling Rate Heat Treatment and Its Microstructure Analysis

Por Weijiang Yang, Yining Zhou, Yunzan Ma, Kejia Liu, Lianbo Wang, Kun Chen
Publicado em 2022-04-01

Assessment of prevalence and risk factors of helicobacter pylori infection in an oilfield Community in Hebei, China

Por Wenhai Wang, Wei Jiang, Shengtao Zhu, Xiujing Sun, Peng Li, Kejia Liu, Henghui Liu, Junchao Gu, Shutian Zhang
Publicado em 2019-11-01