Results 11 to 20 of about 136,601 (268)

Precipitation of calcium carbonate mineral induced by viral lysis of cyanobacteria: evidence from laboratory experiments [PDF]

Biogeosciences, 2019
Viruses have been acknowledged as being important components of the marine system for the past 2 decades, but their role in the functioning of the geochemical cycle has not been thoroughly elucidated to date.
H. Xu, H. Xu, X. Peng, S. Bai, S. Bai, K. Ta, S. Yang, S. Liu, H. B. Jang, Z. Guo   +9 more
doaj   +1 more source

Deep-Sea Underwater Cooperative Operation of Manned/Unmanned Submersible and Surface Vehicles for Different Application Scenarios

Journal of Marine Science and Engineering, 2022
In this paper, we propose three cooperative operational modes of manned and unmanned submersibles for a range of different deep-sea application scenarios.
Lei Yang, Shengya Zhao, Xiangxin Wang, Peng Shen, Tongwei Zhang   +4 more
doaj   +1 more source

An Improved Quantum-Behaved Particle Swarm Optimization Algorithm Combined with Reinforcement Learning for AUV Path Planning

Journal of Robotics, 2023
In order to solve the problem of fast path planning and effective obstacle avoidance for autonomous underwater vehicles (AUVs) in two-dimensional underwater environment, a path planning algorithm based on deep Q-network and Quantum particle swarm ...
HanBin Zhang, XianPeng Shi
doaj   +1 more source

Chemolithotrophic biosynthesis of organic carbon associated with volcanic ash in the Mariana Trough, Pacific Ocean

Communications Earth & Environment, 2023
Volcanic ash alteration supports chemolithotrophic activity at the seabed and contributes to the production of microbial biomass during diagenesis, suggest analyses of isoprenoid and branched glycerol dialkyl glycerol tetraethers distributions in Mariana
Taisi Li, Jiwei Li, Jack Longman, Zhe-Xuan Zhang, Yuangao Qu, Shun Chen, Shijie Bai, Shamik Dasgupta, Henchao Xu, Kaiwen Ta, Shuangquan Liu, Xiaotong Peng   +11 more
doaj   +1 more source

High P-T Calcite-Aragonite Phase Transitions Under Hydrous and Anhydrous Conditions

Frontiers in Earth Science, 2022
The subduction of calcite into deep Earth and subsequent phase change are important for global carbon cycle. However, the study of the phase boundary between calcite and aragonite under high P-T conditions is insufficient due to sparse existing phase ...
Xia Zhao, Xia Zhao, Zhi Zheng, Jiangzhi Chen, Yue Gao, Yue Gao, Jianhui Sun, Xue Hou, Mengjun Xiong, Mengjun Xiong, Shenghua Mei   +10 more
doaj   +1 more source

Bioluminescence Contributes to the Adaptation of Deep-Sea Bacterium Photobacterium phosphoreum ANT-2200 to High Hydrostatic Pressure

Microorganisms, 2023
Bioluminescence is a common phenomenon in nature, especially in the deep ocean. The physiological role of bacterial bioluminescence involves protection against oxidative and UV stresses.
Xu-Chong Bao, Hong-Zhi Tang, Xue-Gong Li, An-Qi Li, Xiao-Qing Qi, Deng-Hui Li, Shan-Shan Liu, Long-Fei Wu, Wei-Jia Zhang   +8 more
doaj   +1 more source

Expression and molecular characterization of an intriguing hyaluronan synthase (HAS) from the symbiont “Candidatus Mycoplasma liparidae” in snailfish [PDF]

PeerJ
Background Hyaluronan synthases (HASs) are ubiquitous in living organisms, and the hyaluronic acid (HA) synthesized by them are important to their body and well used in medicine, cosmetics and other fields.
Lulu Guo, Shaolu Wang, Chunang Lian, Lisheng He   +3 more
doaj   +2 more sources

Biogeography and Population Divergence of Microeukaryotes Associated with Fluids and Chimneys in the Hydrothermal Vents of the Southwest Indian Ocean

Microbiology Spectrum, 2022
Deep-sea hydrothermal vents have been proposed as oases for microbes, but microeukaryotes as key components of the microbial loop have not been well studied.
Yue Zhang, Ning Huang, Hongmei Jing
doaj   +1 more source

Seafloor Stability Assessment of Jiaxie Seamount Group Using the “Weight-of-Evidence” (WoE) Method, Western Pacific Ocean

Journal of Marine Science and Engineering
The deep sea is gradually being exploited, yet research on the stability of the deep seabed is scarce. In this study, the seafloor stability of the Jiaxie Seamount Group in the western Pacific Ocean was assessed using the weight-of-evidence (WoE) method ...
Xuebing Yin, Yongfu Sun, Weikun Xu, Wei Gao, Heshun Wang, Sidi Ruan, Yihui Shao   +6 more
doaj   +1 more source

A Hierarchical Slip-Compensated Control Strategy for Trajectory Tracking of Wheeled ROVs on Complex Deep-Sea Terrains

Journal of Marine Science and Engineering
With the rapid development of deep-sea resource exploration and marine scientific research, wheeled remotely operated vehicles (ROVs) have become crucial for seabed operations.
Dewei Li, Zizhong Zheng, Yuqi Wang, Zhongjun Ding, Yifan Yang, Lei Yang   +5 more
doaj   +1 more source