Results 21 to 30 of about 103,225 (263)

Experimental Study of Deep Submersible Structure Defect Monitoring Based on Flexible Interdigital Transducer Surface Acoustic Wave Technology

Sensors, 2023
In view of the shortage of structural defect monitoring methods for deep submersibles, numerical simulation and experimental research on underwater SAW propagation based on interdigital transducers are carried out in this paper.
Zhongjun Ding, Zhiliang Feng, Hongyu Li, Dejian Meng, Yi Zhang, Dewei Li   +5 more
doaj   +1 more source

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

Deep-sea striving [PDF]

Nature Reviews Microbiology, 2013
This month's Genome Watch highlights a recent article that used single-cell genomics to characterize uncultivated archaea present in marine sediments.
openaire   +2 more sources

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

Deep Sea Sedimentation

Environmental Health Perspectives, 1974
An important problem in the study of microparticles in the marine environment, suspended in the water column or deposited as sediment on the ocean bottom, is the determination of provenance of the microparticles-where did they come from and by what processes were they transported to the sampling location?
openaire   +2 more sources