PTA prices experienced a roller coaster ride in the first half of November and took most market players by surprise.The swing of PTA prices,which has carried the market from CNY11,000/tonne in the early Nov.to CNY9246...PTA prices experienced a roller coaster ride in the first half of November and took most market players by surprise.The swing of PTA prices,which has carried the market from CNY11,000/tonne in the early Nov.to CNY9246/tonne on Nov.30 and rebounded Dec.,is almost the most violent in the entire history of the PTA industry.More ups and downs are inevitable in coming months.展开更多
Many theoretical results on sandstone-type uranium mineralization in northern China obtained by the uranium research team of the Tianjin Center of Geological Survey in recent years are presented.From the source sink s...Many theoretical results on sandstone-type uranium mineralization in northern China obtained by the uranium research team of the Tianjin Center of Geological Survey in recent years are presented.From the source sink system of uranium-producing basins,sedimentary environment of uranium-bearing rock series,ore-forming fluid information,evolution of tectonic events,basin formation and development,we redefine and classify uranium orebodies,redox zoning,and ore-controlling structural styles.We then systematically propose a theoretical system of sandstone-type uranium deposits in northern China.We conclude that sandstone-type uranium deposits in northern China are mainly found in sedimentary environments such as rivers,deltas,and alluvial fans in the Mesozoic and Cenozoic lowstand systems tract and in gray sandstone layers in the vertical redox zoning.The orebodies are controlled by the tectonic slope belt,which is in the shape of a strip on the plane,and spreads in a layer or plate on the section.Vertical(ups and downs)tectonic movement triggers large-scale phreatic flow in the basin,which is the real driving force for controlling the ore-forming fluid.The theoretical system of sandstone-type uranium deposits in northern China should be based on global tectonic movement and environmental changes and take into account factors such as basins as a unit to study mineralization background,ore concentration areas as objects to study mineralization,and the correlation between regional tectonic movement and metallogenic process as a breakthrough point to study tectonic events and metallogenic events.It should also be based on different basin types to establish metallogenic models.The innovative research results and ideas are summarized with the aim of promoting the continuous improvement of sandstone-type uranium mineralization theory in northern China.展开更多
Focus on trade and investment&promote investment cooperation The global situation is complicated and changing and economic globalization is experiencing ups and downs.Discrepancies could be seen in economic trend ...Focus on trade and investment&promote investment cooperation The global situation is complicated and changing and economic globalization is experiencing ups and downs.Discrepancies could be seen in economic trend and policy orientations for major world economies,which post challenges to the economic development and trade cooperation of all countries.The foreign trade value of G20 members takes up 80% of展开更多
Five Chinese national standards on electrically propelled road vehicles,leaded and drafted by CRRC Times Electric Vehicle Co.,Ltd.,were offi cially released recently.The standards include 3 parts of GB/T 18384 on the ...Five Chinese national standards on electrically propelled road vehicles,leaded and drafted by CRRC Times Electric Vehicle Co.,Ltd.,were offi cially released recently.The standards include 3 parts of GB/T 18384 on the safety specifi cations for electrically propelled road vehicles,that is GB/T 18384.1-2015,GB/T 18384.2-2015and GB/T 18384.3-2015,and 2 parts of GB/T 18488 on drive motor system for electric vehicles,including GB/T 18488.1-2015 and GB/T 18488.2-2015.展开更多
文摘PTA prices experienced a roller coaster ride in the first half of November and took most market players by surprise.The swing of PTA prices,which has carried the market from CNY11,000/tonne in the early Nov.to CNY9246/tonne on Nov.30 and rebounded Dec.,is almost the most violent in the entire history of the PTA industry.More ups and downs are inevitable in coming months.
基金The“Northern Sandstone-type Uranium Deposits Investigation Project”(Project 0108)of the China Geological Survey has led to the discovery of many new sandstone-type uranium depositsThe National Basic Research Program(973 Program)(No.2015CB453000)+1 种基金the National Key R&D Program of China(No.2018YFC0604200)both from the Ministry of Science and Technology of the People’s Republic of China have led to innovations in many theoretical understandings of sandstone-type uranium depositsUnder the International Geoscience Programme(No.IGCP-675),a comparative study of sandstone-type uranium deposits between China and the rest of the world has been conducted。
文摘Many theoretical results on sandstone-type uranium mineralization in northern China obtained by the uranium research team of the Tianjin Center of Geological Survey in recent years are presented.From the source sink system of uranium-producing basins,sedimentary environment of uranium-bearing rock series,ore-forming fluid information,evolution of tectonic events,basin formation and development,we redefine and classify uranium orebodies,redox zoning,and ore-controlling structural styles.We then systematically propose a theoretical system of sandstone-type uranium deposits in northern China.We conclude that sandstone-type uranium deposits in northern China are mainly found in sedimentary environments such as rivers,deltas,and alluvial fans in the Mesozoic and Cenozoic lowstand systems tract and in gray sandstone layers in the vertical redox zoning.The orebodies are controlled by the tectonic slope belt,which is in the shape of a strip on the plane,and spreads in a layer or plate on the section.Vertical(ups and downs)tectonic movement triggers large-scale phreatic flow in the basin,which is the real driving force for controlling the ore-forming fluid.The theoretical system of sandstone-type uranium deposits in northern China should be based on global tectonic movement and environmental changes and take into account factors such as basins as a unit to study mineralization background,ore concentration areas as objects to study mineralization,and the correlation between regional tectonic movement and metallogenic process as a breakthrough point to study tectonic events and metallogenic events.It should also be based on different basin types to establish metallogenic models.The innovative research results and ideas are summarized with the aim of promoting the continuous improvement of sandstone-type uranium mineralization theory in northern China.
文摘Focus on trade and investment&promote investment cooperation The global situation is complicated and changing and economic globalization is experiencing ups and downs.Discrepancies could be seen in economic trend and policy orientations for major world economies,which post challenges to the economic development and trade cooperation of all countries.The foreign trade value of G20 members takes up 80% of
文摘Five Chinese national standards on electrically propelled road vehicles,leaded and drafted by CRRC Times Electric Vehicle Co.,Ltd.,were offi cially released recently.The standards include 3 parts of GB/T 18384 on the safety specifi cations for electrically propelled road vehicles,that is GB/T 18384.1-2015,GB/T 18384.2-2015and GB/T 18384.3-2015,and 2 parts of GB/T 18488 on drive motor system for electric vehicles,including GB/T 18488.1-2015 and GB/T 18488.2-2015.
