نتایج جستجو برای: rare earth elements rees

تعداد نتایج: 590024  

2009
M. Ito

Introduction: The rare earth elements (REEs) are concentrated in CAIs by ~20 times the chondritic average [e.g., 1]. The REEs in CAIs are important to understand processes of CAI formation including the role of volatilization, condensation, and fractional crystallization [1,2]. REE measurements are a well-established application of ion microprobes [e.g., 3]. However the spatial resolution of RE...

2016
Chin-Chang Hung Ya-Feng Chen Shih-Chieh Hsu Kui Wang Jianfang Chen David J. Burdige

Fluxes of particulate organic carbon (POC) in the East China Sea (ECS) have been reported to decrease from the inner continental shelf towards the outer continental shelf. Recent research has shown that POC fluxes in the ECS may be overestimated due to active sediment resuspension. To better characterize the effect of sediment resuspension on particle fluxes in the ECS, rare earth elements (REE...

2016
Chin-Chang Hung Ya-Feng Chen Shih-Chieh Hsu Kui Wang Jianfang Chen David J. Burdige

Fluxes of particulate organic carbon (POC) in the East China Sea (ECS) have been reported to decrease from the inner continental shelf towards the outer continental shelf. Recent research has shown that POC fluxes in the ECS may be overestimated due to active sediment resuspension. To better characterize the effect of sediment resuspension on particle fluxes in the ECS, rare earth elements (REE...

2017
Yechun Ding Yuantong Tian Zhaoyi Zeng Ping Shuai Haiying Lan Xianshen Zhu Yi Zhong Longhuo Wu Xiaona Fan

The pollutants rare earth elements (REEs) have posed great threats to human health. To investigate the cytotoxicity of yttrium (Y), a model that rats have free access to water containing YCl3 for 6 months is utilized. The results showed that YCl3 treatment promoted neuronal cell apoptosis by upregulating the proapoptotic factors Bax, caspase-3, Cyto c, and DAPK and by downregulating the antiapo...

2002
JOSEPH A. RESING FRANCIS J. SANSONE

The flow of lava into the ocean at the shoreline of Kilauea Volcano during the ongoing Pu’u O’o eruption has allowed a detailed study of the geochemical interaction between lava and seawater. This paper focuses on the chemistry of the major and minor elements in the fluids that resulted from this interaction. The elemental enrichments in these fluids are dominated by three processes: (1) evapor...

Journal: :Analecta 2023

Phytomining of rare earth elements (REEs) provides a potential possibility for metal recovery at brownfields where conventional mining technique is not reasonable or profitable. The holistic concept phytomining instituted from three scientific sectors. Phytoextraction the first stage referred to accumulation REEs in plants. This followed by enrichment process aiming elevate concentration into s...

Journal: :Dalton transactions 2014
T O L Sunde M Lindgren T O Mason M-A Einarsrud T Grande

Wide band-gap semiconductors doped with luminescent rare earth elements (REEs) have attracted recent interest due to their unique optical properties. Here we report on the synthesis of the transparent conducting oxides (TCOs) indium oxide and indium tin oxide (ITO) doped with neodymium, europium and terbium. The solid solubility in the systems was investigated and isothermal phase diagrams at 1...

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