Results 11 to 20 of about 204,461 (310)

Twenty Thousand Sterling Under the Sea: Estimating the value of protecting deep-sea biodiversity [PDF]

open access: yes, 2013
The deep-sea includes over 90% of the world oceans and is thought to be one of the most diverse ecosystems in the World. It supplies society with valuable ecosystem services, including the provision of food, the regeneration of nutrients and the ...
Hanley, N.   +10 more
core   +1 more source

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

open access: yesBiogeosciences, 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   +9 more
doaj   +1 more source

Deep-Sea Biodiversity in the Mediterranean Sea: The Known, the Unknown, and the Unknowable [PDF]

open access: yes, 2010
Deep-sea ecosystems represent the largest biome of the global biosphere, but knowledge of their biodiversity is still scant. The Mediterranean basin has been proposed as a hot spot of terrestrial and coastal marine biodiversity but has been supposed to ...
Sardà Francesc   +78 more
core   +1 more source

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

open access: yesSensors, 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   +5 more
doaj   +1 more source

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

open access: yesJournal 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   +4 more
doaj   +1 more source

Cosmopolitanism and Biogeography of the Genus Manganonema (Nematoda: Monhysterida) in the Deep Sea [PDF]

open access: yes, 2011
Spatial patterns of species diversity provide information about the mechanisms that regulate biodiversity and are important for setting conservation priorities. Present knowledge of the biogeography of meiofauna in the deep sea is scarce.
Daniela Zeppilli   +5 more
core   +1 more source

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

open access: yesJournal 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

Seawalls in Deep Seas

open access: yesCoastal 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

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