Systematic Studies on the β-decay Half-lives of r-process Nuclei Zhihong Li, Yong Zhou, XinYue Li, Youbao Wang, Bing Guo, Ding Nan and Weiping Liu EPJ Web Conf., 178 (2018) 04006 Published online: 16 May 2018 DOI: 10.1051/epjconf/201817804006