composition of Earth, Moon and the terrestrial planets, with special emphasis on currently planned and future missions.We show how these missions are going to significantly contribute to, or sometimes revolutionise, our understanding of planetary evolution, from formation to the possible emergence of ...
a我们的地球属于危险中 Our Earth belongs to in the danger[translate] aafter several years of observation,the research group have arrived at the conclusion that language acquisition is faster when students are exposed to the situation where it is spoken 在几年观察以后,研究小组到达了在结论语言承购是...
摘要 The accurate analysis of the elemental composition plays a crucial role in the research of functional material...展开更多 作者 吴秉骏 夏经铠 张硕 傅强 章辉 谢晓明 刘志 Bingjun Wu;Jingkai Xia;Shuo Zhang;Qiang Fu;Hui Zhang;Xiaoming Xie;Zhi Liu(State Key Laboratory of Functional Materials...
Bird eggshells contain a large amount of inorganic matter, mainly calcium carbonate, as well as a small amount of organic matter and water. Changes in the elemental composition of the eggshell can affect its quality and are often related to feeding strategy due to maternal effects, which are pa...
Measurements made by a natural gamma ray tool are used to provide an elemental composition of an earth formation. Additional measurements made with a pulsed neutron tool with two or more gamma ray detectors are used to provide a mineralogical and/or elemental image of the formation. This may be...
Rare earth elements (REEs) of 91 fine-grained bottom sediment samples from five major rivers in Korea (the Han, Keum, and Yeongsan) and China (the Changjia... Z Xu,D Lim,J Choi,... - Geo-Marine Letters 被引量: 88发表: 2009年 Distribution and composition of hydrothermal plume particl...
This work presents a comprehensive study on concentrations and elemental composition of total suspended atmospheric particulates for a semi-urban site on the Red Sea coast, and on-board a research vessel, which collected off-shore samples along the Red Sea. We conducted one of the most extended ...
Chemical weathering while on the sea floor has not changed the composition of unetched portions of individual DSS.; Two groups of non-chondritic composition stony DSS are present in the suite. One group consists of particles which had monomineralic precursors. The precursor mineral has been ...
Rare-earth abundances in two mineral separates with distinct oxygen isotopic composition from an Allende inclusion. Meteoritics, 9: 387--388.Onuma, N., T. Tanaka and A. Masuda. 1974. Rare-earth abun- dances in two mineral separates... N Onuma,T Tanaka,A Masuda - 《Meteoritics》 被引量:...