Showing 41 - 60 results of 99 for search '"Earth element"', query time: 0.05s Refine Results
  1. 41

    Experimental evidence for a shallow cumulate remelting origin of lunar high-titanium mare basalts by Shuchang Gao, Yanhao Lin, Wim van Westrenen

    Published 2025-01-01
    “…These results, compared with Monte-Carlo simulations and modelled rare earth element abundances and samarium–neodymium-lutetium–hafnium isotopic signatures of the experimental melts, remove the requirement of a deep origin of the lunar high-Ti mare basalts. …”
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  2. 42

    Synergistic recovery of Pr, Eu, and Ce from gold mine tailings using bioleaching and oxalic acid pretreatment by Hoda Fereydouni, Tannaz Naseri, Seyyed Mohammad Mousavi

    Published 2025-02-01
    “…Abstract Mining activities produce a significant amount of gold mine tailings (GMT) rich in rare earth elements. Despite this, little information is available regarding the effective extraction of these precious elements from GMT. …”
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  3. 43

    Renewable energy and the role of molten salts and carbon by Fray D.

    Published 2013-01-01
    “…Recently, dimensionally stable anodes have been developed for molten salt electrolytes, based upon alkali or alkaline ruthenates which are highly electronically conducting and these may allow the concept of high temperature batteries to be developed in which an alkali or alkaline earth element reacts with air to form oxides when the battery is discharging and the oxide decomposes when the battery is being recharged. …”
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  4. 44

    Simultaneously improved strength and ductility in a Ce-doped dual-phase Mg–9Li alloy by Zhonghao Heng, Lijuan Huang, Qianwen Zhang, Xianzhe Shi, Jianghua Shen

    Published 2025-01-01
    “…In this paper, rare earth element Ce was incorporated into a Mg–Li alloy to modify its mechanical properties. …”
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  5. 45

    Visualizing and quantifying biomineral preservation in fossil vertebrate dental remains by Matthew B. Cowen, Marc de Rafélis, Loïc Ségalen, Benjamin P. Kear, Maïtena Dumont, Živilė Žigaitė

    Published 2025-01-01
    “…We present visual comparisons of elemental compositions in fish and plesiosaur dental remains ranging in age from Silurian to Cretaceous, based on a combination of micro-scale optical cathodoluminescence (CL) observations (optical images and scanning electron microscope) with in-situ minor, trace and rare earth element (REE) compositions (EDS, maps and REE profiles), as a tool for assessing diagenetic processes and biomineral preservation during fossilization of vertebrate dental apatite. …”
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  6. 46

    Effect of Ca Concentration on Microstructure and Mechanical Properties of As-Cast and As-Extruded Quasicrystal-Strengthened Mg-7.2Zn-2.4Gd Alloy by Jianchun Sun, Yilong Ma, Hongwei Miao, Kejian Li, Chunhong Li, Hua Huang

    Published 2018-01-01
    “…Quasicrystal-strengthened Mg-Zn-RE (RE = rare-earth element) alloys have been investigated extensively due to their excellent mechanical properties. …”
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  7. 47

    Diagenetic Fluid and Its Impact on Sandstone Reservoirs in the Southern Boxing Sag, Dongying Depression, Bohai Bay Basin, China by Zhenhuan Shen, Zhuang Ruan, Bingsong Yu, Shujun Han, Chenyang Bai, Qiuhong Chang, Tianxia An

    Published 2022-01-01
    “…Fe-calcite and ankerite cements have a higher homogenization temperature than that of quartz overgrowth and mainly concentrate in FeO and MgO as well as contain a small amount of Na+, K+, and Sr2+. The rare earth element (REE) pattern of bulk mudstone and carbonate cements as well as C–O isotopic evidences indicate that the diagenetic fluids of carbonate cementation are primarily controlled by the adjacent mudstone, whereas mineral dissolution and altered clay minerals in sandstone provide additional cations for the local reprecipitation of late-stage carbonate. …”
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  8. 48

    MINERAL FORMATION CONDITIONS IN ACID MAGMATIC SYSTEMS RELATED TO THE FORMATION OF MASSIVE SULFIDE DEPOSITS OF THE URALS AND ALTAI-SAYANY AREA by V.A. Simonov, V.V. Maslennikov, A.V. Kotlyarov

    Published 2021-12-01
    “…The features of rare and rare earth element patterns in melt inclusions in quartz indicate the similarity of acid magmatic systems of massive sulfide deposits in the Urals and Altai-Sayany region with present-day suprasubduction melts in the ocean-continent transition zones. …”
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  9. 49

    Development of Open Transport of Aqueous Fluid from Pegmatite Revealed by Trace Elements in Garnet by Astin Nurdiana, Atsushi Okamoto, Masaoki Uno, Noriyoshi Tsuchiya

    Published 2022-01-01
    “…Chondrite-normalized rare earth element (REE) patterns of garnets in the pegmatites in the quartz diorite and metamorphic unit are generally characterized by enrichment of heavy REEs and negative Eu anomalies with the REE contents in the schists which are systematically lower than in the pegmatites. …”
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  10. 50

    Study of Corrosion Behavior of Mg–Gd-Based Soluble Magnesium Alloys by Qinghua Wang, Zhiquan Huang, Yanchun Zhu, Ling Qin, Jingfeng Zou, Lifeng Ma

    Published 2025-01-01
    “…Electrochemical testing further confirmed that the Mg<sub>5</sub>Gd second phase, formed through the incorporation of the rare-earth element Gd, exhibited high electrochemical activity.…”
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  11. 51

    New View on the Genesis of the Bashuihe Pluton, Laoshan Granites, China: Indications from Fluid Inclusions and H–O Isotopes by Huimin Liu, Zhaojun Song, Hongbo Yan, Wenyu Wang, Xinru Wang, Yifang Sun, Haonan Li

    Published 2021-01-01
    “…The results of a whole rock, H–O isotopes, rare earth element, and high field strength element analysis on the Laoshan alkali granites suggest significant hydrothermal activity in the late stage of magmatism. …”
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  12. 52

    Hydrochemical Characteristics and Evolution Mode of Cold Seeps in the Qiongdongnan Basin, South China Sea by Zhifeng Wan, Chongmin Chen, Jinqiang Liang, Wei Zhang, Wei Huang, Pibo Su

    Published 2020-01-01
    “…The Na+-Cl-, K+-Cl-, Mg2+-Cl-, and Ca2+-Cl- diagrams and rare earth element distribution curves of the water samples were strongly affected by seawater. …”
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  13. 53

    Hydrothermal activity and its influence on hydrocarbon accumulation in deep dolomite reservoirs of the Ediacaran Dengying Formation, Sichuan Basin by Zhanlei Wang, Chan Jiang, Changcheng Yang, Yuqiang Jiang, Yifan Gu

    Published 2025-04-01
    “…Methods including petrography identification, fluid-inclusion observation, in-situ U-Pb dating, and in-situ measurement of rare earth element (REE), etc. are integrated to characterize hydrothermal activity process within the Dengying Formation dolomite. …”
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  14. 54

    Comparison of microstructures and magnetic properties of Tb-Pr-Cu-Al and Tb-Nd-Cu-Al grain boundary diffused Nd-Fe-B magnets by Zixiang Mo, Qingzheng Jiang, Mengping Kan, Jianming Li, Hang Wang

    Published 2025-03-01
    “…Low melting alloys containing heavy rare earth element Tb have been widely used for grain boundary diffusion (GBD) to increase the coercivity (Hcj) of sintered Nd-Fe-B magnets. …”
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  15. 55

    Petrogenesis of REE-rich two-mica granite from the Indosinian Xiekeng pluton in South China Block with implications for REE metallogenesis by Defu Zhang, Defu Zhang, Tingting Lv, Xiangaung Wang, Xiangaung Wang, Mingxuan Cao, Xiquan Chen, Xiquan Chen, Yongwen Zhang, Liangxin Gong

    Published 2025-01-01
    “…It also contains peraluminous minerals such as muscovite, classifying it as a highly fractionated S-type granite. The total rare earth element (ΣREY = ΣREE + Y) contents range from 224.7 to 353.12 ppm, with a relative enrichment in light rare earth elements (ΣLREE/ΣHREY) of 1.55–5.36, and significant fractionation between light and heavy rare earth elements with (La/Yb)N = 3.36–18.48, and pronounced negative Eu anomalies (Eu/Eu* = 0.08–0.41). …”
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  16. 56

    Petrogenesis of Intrusive body in Northeast of Joveinan, North of Isfahan, Urumieh- Dokhtar magmatic zone by Shahzad Sherafat, Majid Zeidi, Mahnaz Khodami

    Published 2024-10-01
    “…The chondrite-normalized rare earth elements diagrams show a medium enrichment of LREE compared to HREE, a weak negative anomaly of Europium, and a flat pattern of heavy rare earth elements. …”
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  17. 57

    Reserves and extraction of rare earth metals and elements as a key factor in the renewable energy sector development at the the world economy transformation current stage by R. D. Mingaleeva

    Published 2023-06-01
    “…At the same time, for output of the wide range of products for the renewable energy sector, as well as for the development of energy depot systems, it is necessary to use rare earth elements and metals in production. The results of the analysis of data on reserves, production and calculated values of the resource availability coefficient of rare earth elements and metals shows that at the existing level of production, the proven reserves of cobalt will last for ≈ 50 years, lithium– for ≈ 200 years and rare earth elements – for ≈ 450 years, respectively, which leads to a limitation of the global transition speed to renewable energy sources and makes it necessary to look for new technical solutions.…”
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  18. 58

    DEVELOPMENTS AND USING OF COMPLEX PREPARATIONS FOR REFINEMENT AND MODIFICATION OF ALUMINIUM ALLOYS by S. P. Korolyov, A. M. Galushko, V. M. Mihajlovskij

    Published 2011-09-01
    “…Different reactions of interaction of such modifiers as sodium, strontium, sulfur, phosphorus and rare-earth elements with components, impurity of aluminum alloys and between each other, are investigated.…”
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  19. 59

    Temperature-Dependent Generalized Planar Fault Energy and Twinnability of Mg Microalloyed with Er, Ho, Dy, Tb, and Gd: First-Principles Study by Lili Liu, Yelu He, Dingxing Liu, Xiaozhi Wu, Rui Wang

    Published 2016-01-01
    “…On the other hand, alloying rare earth elements will generally decrease the fault energies and increase the ductility and twinnability of Mg at different temperature. …”
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  20. 60

    Studies of the Effect of Crosslinking in the Strongly Basic Anion Exchanger Dowex 1 and the HNO Concentration Employed on the Separation of the Sm–Nd Pair in the Polar Organic Solv... by Z. Hubicki, M. Olszak

    Published 2001-04-01
    “…Equally, the application of rare earth elements in metallurgy, catalysis, ceramics, etc. remains of significant importance. …”
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