Since the low and medium grade oxide ores in the Main and Eastern Mining Areas at the Bayan Obo Mine have a high grade of Nb_2O_5 and large ore reserves and are rich in many elements,they are of greater value to use i...Since the low and medium grade oxide ores in the Main and Eastern Mining Areas at the Bayan Obo Mine have a high grade of Nb_2O_5 and large ore reserves and are rich in many elements,they are of greater value to use in development and recovery than other kinds of niobium minerals resources.The dissemination characteristics and processing properties of four types of niobium minerals are summarised and methods and results of niobium mineral processing are also described.展开更多
Online social network is increasingly showing a significant impact and role in many areas of social life. In the study of online social network related issues have become the consensus of the academic and industrial c...Online social network is increasingly showing a significant impact and role in many areas of social life. In the study of online social network related issues have become the consensus of the academic and industrial communities and the urgent need for. This paper mainly studies the problem of information dissemination in social network, the mode of communication, behavior, propagation paths and propagation characteristics are studied, and take the Tencent micro-blog as an example, based on the analysis of many examples, several main models and characteristics of information dissemination in social network platform.展开更多
文摘Since the low and medium grade oxide ores in the Main and Eastern Mining Areas at the Bayan Obo Mine have a high grade of Nb_2O_5 and large ore reserves and are rich in many elements,they are of greater value to use in development and recovery than other kinds of niobium minerals resources.The dissemination characteristics and processing properties of four types of niobium minerals are summarised and methods and results of niobium mineral processing are also described.
文摘Online social network is increasingly showing a significant impact and role in many areas of social life. In the study of online social network related issues have become the consensus of the academic and industrial communities and the urgent need for. This paper mainly studies the problem of information dissemination in social network, the mode of communication, behavior, propagation paths and propagation characteristics are studied, and take the Tencent micro-blog as an example, based on the analysis of many examples, several main models and characteristics of information dissemination in social network platform.
