Doug Bartlett

1. Introduction Archaea, one of the three domains of life, are present in all environments worldwide. They play an important role in the marine carbon and nitrogen cycle, especially Crenarchaeota which represent up to 20% of all picoplankton cells in the world’s oceans (Karner et al., 2001; Schattenhofer et al., 2009).

Shudong He1*, Sawei Qiu1, Wenbo Tang2, Youduo Peng2 and Yongping Jin2 1School of Intelligent Manufacturing and Mechanical Engineering, Hunan Institute of Technology, Hengyang, China 2National-Local Joint Engineering Laboratory of Marine Resources Exploration Equipment and Safety Technology, Hunan University of Science and Technology, Xiangtan, China High-efficiency pressure-retaining sampling technology for obtaining seabed sediments is required for studying marine geological history, the...