Japan’s Rare Earth Strategy and Price Volatility on Tobacco Cultivation: How Demand Management Worked?

2021 ◽  
Vol 7 (5) ◽  
pp. 2316-2337
Author(s):  
Bian Lu ◽  
Zhuang Xiaoyang ◽  
Zhang Jiangpeng ◽  
Liu Zhaohui

The two major light rare earth elements (REES) involved in Japan’s rare earth strategy: Cerium Oxide and Praseodymium Oxide, whether the price is affected by the demand management capability of the Japanese tobacco cultivation industry is the problems to be solved in this paper. For this aim, the monthly data from April 2008 to June 2017 was used to construct a model which takes into account the financial factors and demand factors for the two product by nonlinear methods, and use MSVAR model with regime-switching characteristic. The results are as follows. In general, different products have different price volatility characteristics. Even if the number of the regime is the same, the volatility connotation is different. Firstly, Cerium Oxide in the violent fluctuation regime has financial properties, and the financial properties of Praseodymium Oxide are reflected in three regime stages. Secondly, Japan’s industry factors have a significant change in the relationship between Cerium Oxide and Praseodymium Oxide to a certain extent. Among them, Information technology and tobacco cultivation Industrials as direct influencing factors have a counter-regulatory effect on the two product at certain price fluctuations, which reflects the direct demand management capabilities of Japanese companies, and Utilities and Telecommunication have a counter-regulation effect on Cerium Oxide and Praseodymium Oxide at certain price fluctuations, which reflects the indirect demand management ability of Japanese companies.

2015 ◽  
Vol 70 (12) ◽  
pp. 929-934 ◽  
Author(s):  
Sebastian Bräuchle ◽  
Hubert Huppertz

AbstractThe rare-earth borosilicates RE3BSi2O10 (RE = Pr, Tb) were synthesized under high-temperature conditions of 1600 °C in a radio frequency furnace from praseodymium oxide, terbium oxide, silicon dioxide, silicon nitride, boron trioxide, and boric acid. The structure determinations based on powder diffraction data revealed that both phases RE3BSi2O10 (RE = Pr, Tb) are isotypic to Gd3BSi2O10 [L. Chi, H. Chen, X. Lin, H. Zhuang, J. Huang, Jiegou Huaxue1998, 17, 297]. The compounds crystallize in the orthorhombic space group Pbca (no. 61) with eight formula units and the lattice parameters a = 982.9(2), b = 714.2(2), c = 2314.4(4) pm, V = 1.6247(4) nm3, Rp = 0.0231, and Rwp = 0.0354 (all data) for Pr3BSi2O10 and a = 960.5(5), b = 692.1(3), c = 2272.4(1) pm, V = 1.5106(2) nm3 for Tb3BSi2O10. The lattice parameters of Tb3BSi2O10 could be determined, but a final refinement of the powder data has not proved satisfactory. The structure of Pr3BSi2O10 exhibits eight- (Pr1) and ninefold coordinated rare-earth cations (Pr2 and 3). Layers of ortho-silicate anions [SiO4]4– and borosilicate anions [BSiO6]5– are arranged alternatingly along the c axis and the RE cations are located in between.


Coatings ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 432 ◽  
Author(s):  
Nursultan Kainbayev ◽  
Mantas Sriubas ◽  
Darius Virbukas ◽  
Zivile Rutkuniene ◽  
Kristina Bockute ◽  
...  

Samarium-doped ceria (SDC) and gadolinium-doped ceria (GDC) thin films were formed by e-beam vapor deposition on SiO2 substrate, changing the deposition rate and substrate temperature during the deposition. X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive X-Ray spectrometry (EDS) were employed in order to investigate the structure ad morphology of the films. A single Raman peak describing the structure of undoped CeO2 was observed at a frequency of 466 cm−1. Doping of cerium oxide with rare-earth elements shifted the peak to lower frequencies (for Sm—462 cm−1). This shift occurs due to the increased number of oxygen vacancies in doped cerium oxide and it depends on the size and concentration factor of the dopant. It was found that wavenumbers and their intensity differed for the investigated samples, even though the peaks resembled each other in shape. The indicated bands for doped ceria originated as a result of the Raman regime (F2g) of fluorite dioxide associated with the space group (Fm3m). The observed peak‘s position shifting to a lower frequency range demonstrates the symmetric vibrations of oxygen ions around Ce4+ ions in octahedra CeO8. Raman shift to the lower frequencies for the doped samples has two reasons: an increase in oxygen vacancies caused by doping cerium oxide with rare-earth materials and the size factor, i.e., the change in frequency Δω associated with the change in the lattice constant Δa.


2014 ◽  
Vol 575 ◽  
pp. 97-102 ◽  
Author(s):  
M. Nazri Abu Shah ◽  
S. Hanim Md Nor ◽  
Kamariah Noor Ismail ◽  
Abdul Hadi

An overview of modification of cerium oxide, CeO2which is employed in the three-way catalyst (TWCs) is presented in this article. The modifications of cerium oxide, CeO2incorporated with the metal oxides for the improvement of thermal stability, microstructure and oxygen storage capacity (OSC) are discussed. In view of that, the types of metal oxide are grouped into transition metals, rare earth metals, and alkaline metals and the effect of each group into cerium oxide, CeO2are elaborated.


2011 ◽  
Vol 209 (2) ◽  
pp. 353-358 ◽  
Author(s):  
M. Chandra Dimri ◽  
H. Khanduri ◽  
H. Kooskora ◽  
J. Subbi ◽  
I. Heinmaa ◽  
...  

Author(s):  
Ye Fan ◽  
Zhicheng Zhang ◽  
Xiaoli Zhao ◽  
Haitao Yin

China combines green energy and industrial policy in its power market reform with various policy initiatives, including price support scheme for electricity from renewable sources and subsidies in the push for broader use of greener energy. This study focuses on the impacts of power market reform on the stock price volatility of listed power companies: 1) we use the Iterative Cumulative Sums of Squares (ICSS) algorithm to identify structural break points in stock prices; 2) we analyze the characteristics of stock price volatility based on the GARCH model; 3) we report the impact of power regulation on stock price fluctuations based on the Autoregressive Distributed Lag (ARDL) model. The result suggests three structural breaks in China’s power stock price volatility were related to the promulgation of power market reform policies. We find that industrial policies promote the reduction of power stock price fluctuations and its impact on power stock price volatility is consistent in the long run. However, our study also indicates the recent policies related to renewable energy do not have a very significant impact on the power stock market.


2010 ◽  
Vol 495 (4-6) ◽  
pp. 280-286 ◽  
Author(s):  
Vaneet Sharma ◽  
Kathryn M. Eberhardt ◽  
Renu Sharma ◽  
James B. Adams ◽  
Peter A. Crozier

2004 ◽  
Vol 20 (6) ◽  
pp. 921-924 ◽  
Author(s):  
Taicheng DUAN ◽  
Hongfei LI ◽  
JianZhen KANG ◽  
Hangting CHEN

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