نتایج جستجو برای: precious metal

تعداد نتایج: 201716  

Journal: :Chemical communications 2010
Libin Wu Yuta Nabae Shogo Moriya Katsuyuki Matsubayashi Nazrul M Islam Shigeki Kuroki Masa-aki Kakimoto Jun-ichi Ozaki Seizo Miyata

Pt-free cathode catalysts for polymer electrolyte membrane fuel cells have been prepared by multi-step pyrolysis of FePc and PhRs, in the best of which show extensively high initial cell performance and good durability compared to other present precious-metal-free cathode catalysts to date.

Journal: :Acta Crystallographica Section A Foundations and Advances 2017

Journal: :Journal of Commodity Markets 2023

Several common properties shared by cryptocurrencies and precious metals, such as safe haven, hedge diversification for risk assets, have been widely discussed since Bitcoin was created in 2008. However, no studies explored whether cryptocurrency market uncertainties can help to explain forecast volatilities metal markets. By using the GARCH-MIDAS model incorporating policy price uncertainty, w...

Journal: :Journal of the Japan Institute of Metals and Materials 1970

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