Results 21 to 30 of about 297,000 (310)

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 Bacteria And Their Biotechnological Potentials [PDF]

, 2004
Deep-sea environment characterized by its low temperature, high hydrostatic pressure, limited nutrient contents, and constant darkness has been a hostile environment for most marine microorganisms.
Karna Radjasa, Ocky
core   +2 more sources

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

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

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 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

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

Archaeal diversity in deep-sea sediments estimated by means of different Terminal-Restriction Fragment Length Polymorphisms (T-RFLP) protocols [PDF]

, 2009
Despite the increasing recognition of the quantitative importance of Archaea in all marine systems, the protocols for a rapid estimate of Archaeal diversity patterns in deep-sea sediments have been only poorly tested yet.
Danovaro, Roberto, Luna, Gian Marco, Pusceddu, Antonio, Stumm, Karen   +3 more
core   +1 more source