Results 181 to 190 of about 264,922 (250)

Regulations on Polymetallic Nodules Adopted

Environmental Policy and Law, 2000

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Organomineralization in the deep seabed polymetallic nodules: a matter of cell surface

Geomicrobiology Journal
Deep seabed ferromanganese precipitates, better known as polymetallic nodules and cobalt crusts, are ore deposits of geobiological interest because of their enrichment in transition metals such as Ni, Cu, Co, Mo, Li, and rare earth elements.
Lilia Montoya, E. Escobar-Briones
semanticscholar   +1 more source

Exploration for Polymetallic Nodules

1980
This paper is an introduction to the field of polymetallic nodule exploration, most of which lies at the bottom of the ocean below 15,000 ft. Among the minerals that are expected to be found under the ocean, polymetallic nodules are probably the most unusual.
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Marine biominerals: perspectives and challenges for polymetallic nodules and crusts

Trends in Biotechnology, 2009
Deep sea minerals in polymetallic nodules, crusts and hydrothermal vents are not only formed by mineralization but also by biologically driven processes involving microorganisms (biomineralization). Within the nodules, free-living and biofilm-forming bacteria provide the matrix for manganese deposition, and in cobalt-rich crusts, coccolithophores ...
Xiaohong, Wang, Werner E G, Müller
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Data augmentation using GANN in the quantitative LIBS analysis of scarce samples: a case study on Polymetallic Nodules from 5000m Ocean Depth

Journal of Analytical Atomic Spectrometry
As the world transitions towards renewable energy, the demand for critical resources such as nickel (Ni), cobalt (Co), and lithium (Li) in energy storage systems is ever more pronounced.
Jie Ren, Suming Jiang, Sun Chen, Zhenggang Li, Yanhui Dong, Ling Chen, Xibin Han, Jingwen Yu, Wendong Wu   +8 more
semanticscholar   +1 more source

Semantic segmentation of deep-sea polymetallic nodules based on an improved DeepLabV3+ algorithm

Marine Georesources & Geotechnology
Due to the complexity of the deep-sea environment and the diversity of target features, traditional image segmentation models face challenges in deep-sea operations.
Jichao Yang, Tongbo Xu, Jinghao Zhu, Wenquan Zhang, Qing Zhao, Guoyu Xu, Guanhong Zhai   +6 more
semanticscholar   +1 more source

Distribution of Microfossils Within Polymetallic Nodules: Biogenic Clusters Within Manganese Layers

Marine Biotechnology, 2011
Biomineralization is the process by which living organisms or organic matrices produced by them initiate and structure deposition of inorganic polymers/minerals. Deep-sea polymetallic nodules and crusts have recently been recognized as biominerals that are formed around bio-seeds; these deposits are of economic value.
Xiaohong Wang, Lu Gan, Matthias Wiens, Ute Schloßmacher, Heinz C. Schröder, Werner E. G. Müller   +5 more
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Sustainable Processing of Deep-Sea Polymetallic Nodules

2017
The possibility of commercialization of processing technology for sea nodules has been linked with comparisons with similar terrestrial process operations. In addition to techno-economic viability, an added focus to commercialization is the sustainability of the process route. The general context of sustainability is discussed.
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Estimation of Reliability of Underwater Polymetallic Nodule Mining Machine

Marine Technology Society Journal, 2015
AbstractThis paper presents the reliability analysis carried out on the subsystems of the underwater polymetallic nodule mining machine developed by National Institute of Ocean Technology, India, which is being enhanced for polymetallic nodule mining technology demonstration at 6,000-m water depth in the Central Indian Ocean Basin, where manganese ...
Nidhi Varshney, Siva Rajesh, Anantha Padmanabhan Aarthi, Narayanmurthy Renganayahi Ramesh, Narayanswamy Vedachalam, Gidugu Ananda Ramadass, Malayath Aravindakshan Atmanand   +6 more
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Different biological responses of Skeletonema costatum and Prorocentrum donghaiense to polymetallic nodules from seawaters.

Aquatic Toxicology
The negative impacts of polymetallic nodules mining on deep-sea benthic organisms have been widely established, but there is still a lack of understanding of the environmental impact on the surface ocean scenario.
Shuangshuang Lin, Jiandi Li, Liping Jia, Xuguang Huang, Lei Wang   +4 more
semanticscholar   +1 more source