Rare earth resources are relatively scarce worldwide, but their global consumption is increasing year-by-year. At present, China has about 36% of the global rare earth reserves, but provides 90% of the world＇s supply...Rare earth resources are relatively scarce worldwide, but their global consumption is increasing year-by-year. At present, China has about 36% of the global rare earth reserves, but provides 90% of the world＇s supply, which has generally met world demand and promoted the development of the world economy. In order to continuously and stably supply rare earths to international markets, the Chinese Government has financially supported the Institute of Multipurpose Utilization of Mineral Resources within the China Geological Survey to study the utilization of low-grade rare earth ores. Following many years of experimental research, the project has developed a new technology entitled ＂Flotation to Form Agglomerates and then Magnetic Separation＂, which will bring a technological revolution to the world＇s light rare earth ore dressing.展开更多
The structural evolution of Cu_（45）Zr_（45）Ag_（10） metallic glass was investigated by in situ transmission electron microscopy heating experiments. The relationship between phase separation and crystallization wa...The structural evolution of Cu_（45）Zr_（45）Ag_（10） metallic glass was investigated by in situ transmission electron microscopy heating experiments. The relationship between phase separation and crystallization was elucidated. Nucleation and growth-controlled nanoscale phase separation at early stage were seen to impede nanocrystallization, while a coarser phase separation via aggregation of Ag-rich nanospheres was found to promote the precipitation of Cu-rich nanocrystals.Coupling of composition and dynamics heterogeneities was supposed to play a key role during phase separation preceding crystallization.展开更多
DNA double-strand breaks(DSBs)severely impact the integrity of the genome and cell homeostasis.To address DSBs,cells activate sophisticated mechanisms to repair this DNA damage.Non-homologous end joining(NHEJ)is a pre...DNA double-strand breaks(DSBs)severely impact the integrity of the genome and cell homeostasis.To address DSBs,cells activate sophisticated mechanisms to repair this DNA damage.Non-homologous end joining(NHEJ)is a predominant pathway for repairing DSBs.p53 binding protein 1(53BP1)serves as a pivotal regulator in the NHEJ pathway.By locating and forming phase separation at DSB sites,53BP1 acts as a scaffold protein to recruit downstream components and facilitate DSB repair[1].展开更多
文摘Rare earth resources are relatively scarce worldwide, but their global consumption is increasing year-by-year. At present, China has about 36% of the global rare earth reserves, but provides 90% of the world＇s supply, which has generally met world demand and promoted the development of the world economy. In order to continuously and stably supply rare earths to international markets, the Chinese Government has financially supported the Institute of Multipurpose Utilization of Mineral Resources within the China Geological Survey to study the utilization of low-grade rare earth ores. Following many years of experimental research, the project has developed a new technology entitled ＂Flotation to Form Agglomerates and then Magnetic Separation＂, which will bring a technological revolution to the world＇s light rare earth ore dressing.
基金supported by the National Natural Science Foundation of China (Grant No. 51101004)the financial support of China Scholarship Council. Z.Q. Liu is gratefulsupport by the IMR SYNL-T.S. Kê Research Fellowship
文摘The structural evolution of Cu_（45）Zr_（45）Ag_（10） metallic glass was investigated by in situ transmission electron microscopy heating experiments. The relationship between phase separation and crystallization was elucidated. Nucleation and growth-controlled nanoscale phase separation at early stage were seen to impede nanocrystallization, while a coarser phase separation via aggregation of Ag-rich nanospheres was found to promote the precipitation of Cu-rich nanocrystals.Coupling of composition and dynamics heterogeneities was supposed to play a key role during phase separation preceding crystallization.
基金supported by the National Natural Science Foundation of China(32422041,32071226)the Foundation of Hubei Hongshan Laboratory(2021HSZD011)+1 种基金the Fundamental Research Funds for the Central Universities(2662023PY001)the HZAU-AGIS Cooperation Fund(SZYJY2022022).
文摘DNA double-strand breaks(DSBs)severely impact the integrity of the genome and cell homeostasis.To address DSBs,cells activate sophisticated mechanisms to repair this DNA damage.Non-homologous end joining(NHEJ)is a predominant pathway for repairing DSBs.p53 binding protein 1(53BP1)serves as a pivotal regulator in the NHEJ pathway.By locating and forming phase separation at DSB sites,53BP1 acts as a scaffold protein to recruit downstream components and facilitate DSB repair[1].
