Results 71 to 80 of about 235 (134)

Sediment Disturbance and Near-Field Dispersion Characteristics of a Coandă-Effect Collector

Journal of Marine Science and Engineering
Balancing high collection efficiency and controlled sediment plume dispersion is a core challenge in deep-sea polymetallic nodule harvesting technology. This work investigates a Coandă-effect collector using two numerical frameworks: a CFD-DEM model for ...
Yan Li, Wenjie Luo, Qiuhui Shan
doaj   +1 more source

Cross-Expedition Domain Adaptation for Polymetallic Nodule Detection: A Multi-Model Pseudo-Labelling Approach

Journal of Marine Science and Engineering
The automated detection of deep-sea polymetallic nodules is critical for processing large volumes of benthic imagery. However, its scalability faces challenges from cross-expedition covariate shifts, such as changes in lighting, altitude, and camera ...
Gabriel Loureiro, André Dias, Eduardo Silva   +2 more
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In-situ environmental monitoring for deep-sea polymetallic nodule mining: Status, challenges, and future directions

International Journal of Mining Science and Technology
The prospective mining of deep-sea polymetallic nodules, a source of strategic critical metals, could cause irreversible damage to fragile deep-sea ecosystems, sparking global scientific, political, and ethical controversies. Consequently, establishing a
Xiang Chen, Zhihan Fan, Yonggang Jia, Zhicheng Zhang, Xiao Wang, Xu Guo, Xiaojun Zhuo, Hao Zheng, Yuwei Liu   +8 more
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Correction to: Composition, Formation, and Occurrence of Polymetallic Nodules [PDF]

, 2018
T. Kuhn, A. Wegorzewski, C. Rühlemann, A. Vink   +3 more
openaire   +1 more source

Megafauna of the UKSRL exploration contract area and eastern Clarion-Clipperton Zone in the Pacific Ocean: Echinodermata

Biodiversity Data Journal, 2017
Diva Amon, Amanda Ziegler, Antonina Kremenetskaia, Christopher Mah, Rich Mooi, Tim O'Hara, David Pawson, Michel Roux, Craig Smith   +8 more
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Megafauna of the UKSRL exploration contract area and eastern Clarion-Clipperton Zone in the Pacific Ocean: Annelida, Arthropoda, Bryozoa, Chordata, Ctenophora, Mollusca

Biodiversity Data Journal, 2017
Diva Amon, Amanda Ziegler, Jeffrey Drazen, Andrei Grischenko, Astrid Leitner, Dhugal Lindsay, Janet Voight, Mary Wicksten, Craig Young, Craig Smith   +9 more
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Helium isotope in polymetallic nodules and submarine black smokers

Chinese Science Bulletin, 1998
Y. H. Li, J. C. Li, Z. Q. Hou
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Electrobioleaching of polymetallic ocean nodules

Hydrometallurgy, 2001
Abstract In this paper, a novel electrobioleaching process for recovering valuable non-ferrous metals from ocean nodules is described. The key for successful and efficient dissolution of copper, nickel and cobalt from ocean nodules depends on prior reduction of the manganese and ferric oxides with which the above valuable non-ferrous metals are ...
Kumari, Abha, Natarajan, KA
openaire   +1 more source

India's Programme on Polymetallic Nodules

Offshore Technology Conference, 1990
Abstract This article is a review of India's programme aimed at developing deep sea manganese nodules on a commercial basis. A brief history of the programme is followed by an outline of current work in the areas of survey and exploration, deep-sea mining technologies, extractive metallurgy and environmental studies.
J. Yates, K.R. Gupta
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Mössbauer and ESR Studies of Polymetallic Nodules

physica status solidi (a), 1990
Ces spectres Mossbauer, enregistres a la temperature de l'azote liquide et a temperature ambiante, sont constitues de larges doublets symetriques bien resolus. On montre que deux doublets se chevauchent. Le doublet interieur correspond a Fe 3+ au site tetrahedrique, le doublet exterieur a Fe 3+ au site ...
S. Swami, V. K. Agarwal, S. S. Sharma, J. Varma   +3 more
openaire   +1 more source