The main geochemical conclusions are that Nb, Ta, and P have similar speciations in peraluminous and peralkaline melts. It follows that fractionation of these cations, particularly the perturbation of the Nb/Ta ratios in silicic magmas, can be brought about only by interactions with a crystallin...
摘要: The article announces the delaying of the acquisition deal of Comcast Corp. with NBC Universal until January 2011.年份: 2010 收藏 引用 批量引用 报错 分享 全部来源 求助全文 EBSCO 相似文献The Proposed Comcast-NBC Universal Combination: How It Might Affect the Video Market This report ...