Results 11 to 20 of about 107,403 (262)

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

Seawalls in Deep Seas

Coastal Engineering 1980, 1980
Features in wave overtopping of two new types of seawalls designed to be built in considerably deep sea conditions are presented herein. One of those is the seawall of concrete caisson with a parapet wall and armor blocks on the top of the caisson, and another one is the seawall with a slitted box-type wave absorber.
Shoshichiro Nagai, Shohachi Kakuno
openaire   +2 more sources

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

Light in the deep sea [PDF]

Science, 1884
n ...
openaire   +4 more sources

Phosphorescence in the Deep Sea [PDF]

Science, 1884
n ...
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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

Deep Sea Corals [PDF]

Nature, 1870
IN the postscript to Mr. J. Gwyn Jeffreys's report on the “Deep-sea Dredging Expedition in H.M.S. Porcupine,” I notice the following sentence:— “The presence of corals at great depth will also materially alter the views generally received of the depth at which reef-builders may work, and modify to a certain extent Darwin's theory of the reefs and their
openaire   +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

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

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