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2 weeks ago | 
mining.com | Lewis Jackson |Hongmei Li |Sonali Paul
The longstanding global pricing benchmark for most traded iron ore cargoes will be adjusted in 2026 to reflect the falling quality of ore from top supplier Australia, pricing service Platts said. Platts, part of S&P Global Commodity Insights, proposed to revise down the specification for its benchmark index to 61% iron content from 62% due to the declining quality of Australian iron ore fines, the global price reporting agency (PRA) said on Tuesday.
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3 weeks ago | 
aol.com | Eric Onstad |Hyunjoo Jin |Hongmei Li
By Eric Onstad, Hyunjoo Jin and Hongmei LiLONDON/SEOUL/SINGAPORE (Reuters) -U.S. prices of steel and aluminium spiked on Monday while shares of foreign steelmakers slumped after U.S. President Donald Trump said he would double tariffs on imports of the two metals to 50%.
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1 month ago | 
money.usnews.com | Hongmei Li |Pratima Desai |Lewis Jackson
By Hongmei Li, Pratima Desai, Lewis JacksonHONG KONG/LONDON (Reuters) -Unusually large shipments of copper to the United States are unlikely to abate as long as the threat of tariffs hangs over the market and price premiums for the metal on U.S.-based COMEX make deals profitable for traders and producers, analysts said.
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1 month ago | 
reuters.com | Hongmei Li |Pratima Desai |Lewis Jackson
Traders work on the floor of the London Metal Exchange, in London, Britain September 27, 2018.
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1 month ago | 
mining.com | Hongmei Li |Lewis Jackson |Veronica Brown
Unusually large shipments of copper to the United States are unlikely to abate as long as the threat of tariffs hangs over the market and price premiums for the metal on US-based COMEX make deals profitable for traders and producers, analysts said. Since February, when US President Donald Trump ordered a probe into potential new tariffs on imports of copper vital for electric vehicles, power grids and construction, prices of the metal on COMEX have soared.
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1 month ago | 
reuters.com | Hongmei Li |Pratima Desai |Lewis Jackson
A company logo of Shanghai Futures Exchange is displayed at a booth during LME Week Asia in Hong Kong, China June 14, 2016.
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Dec 3, 2024 | 
onlinelibrary.wiley.com | Liguo Yang |Automation Hefei |Hongmei Li |Haonan Zhao
References 1, , . Adaptive flux-weakening controller for interior permanent magnet synchronous motor drives. IEEE Journal of Emerging and Selected Topics in Power Electronics 2014; 2(2): 236–248. 2, , . Six-step operation of PMSM with instantaneous current control. IEEE Transactions on Industry Applications 2014; 50(4): 2614–2625. 3, , . Current minimizing torque control of the IPMSM using Ferrari's method. IEEE Transactions on Power Electronics 2013; 28(12): 5603–5617. 4, , , , , .
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Oct 15, 2024 | 
mdpi.com | Yadong Liu |Hongmei Li |Lin Zhu |Bin Chen
All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.
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Oct 3, 2024 | 
dialnet.unirioja.es | Hongmei Li
Ayuda Buscar en la ayuda Buscar en la ayuda Desafíos educativos en el desarrollo de la competencia digital y el pensamiento crítico en la era post-información [1] Universidad de Artes y Ciencias de Sichuan Localización: Culture and Education, Cultura y Educación, ISSN-e 1578-4118, ISSN 1135-6405, Vol. 36, Nº 2 (Nùmero Monográfico: Cultura y Educación viaja a China), 2024, págs.
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Oct 1, 2024 | 
onlinelibrary.wiley.com | Haonan Zhao |Automation Hefei |Hongmei Li |Liguo Yang
References 1, . Discrete-time fuzzy speed regulator design for PM synchronous motor. IEEE Transactions on Industrial Electronics 2013; 60(2): 600–607. 2, , , , . Adaptive PID speed control Design for Permanent Magnet Synchronous Motor Drives. IEEE Transactions on Power Electronics 2015; 30(2): 900–908. 3, , , , , , . Non-cascaded model-free predictive speed control of SMPMSM drive system. IEEE Transactions on Energy Conversion 2022; 37(1): 153–162. 4, .
