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Behaviors of Rare Earths during Fluid-Rock Interaction and Its Significance of Geochemistry 刘丛强1,凌其聪1 (1.Laboratory of Study the Earth′s Interior and Geofluids, Institute of Geochemistry, Chinese Academy of Sciences,) Abstract:Rare earths in ores, altered and unaltered sericite phyllite, altered and unaltered dacite porphyry were determined in order to examine behaviors of rare earths......
Rare earth elements stratigraphic significance in late Permian coal measure from Bijie City, Guizhou Province, China王强1,22. Graduate University of Chinese Academy of Sciences摘 要:Rare earth elements (REEs) are good geological indicators. In order to understand REEs stratigraphic significance, REEs in Late Permian coal measure from Bijie City, western......
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causes the loss of lives and property. Thus, the analysis on collapse mechanisms is of obvious practical significance. Different from other structures like bridges and buildings, tunnels are constructed... is derived with the help of the limit analysis theory. Analytical equations related to collapsing mechanisms in deep tunnel with smooth three-centered arc cross sections are derived on the basis of Hoek-Brown......
and microstructure evolution characteristics of 2099 alloy were investigated by hot compression tests, variance analysis and TEM technology. The results show that, the flow stress of 2099 alloy experiences... under the significance level of 0.01, which indicates that 2099 alloy is a positive strain rate sensitive and negative temperature sensitive materials. The microstructure of 2099 alloy experiences......
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) by principal component analysis [J]. Water Research, 2000, 34: 807-816. [24] MCKENNA Jr J E. An enhanced cluster analysis program with bootstrap significance testing for ecological community analysis [J... Berlin Heidelberg 2016 Abstract: Multivariate statistical techniques, such as cluster analysis (CA), discriminant analysis (DA), principal component analysis (PCA) and factor analysis (FA), were......
Thermo-mechanical analysis of an SI engine piston usingdifferent boundary condition treatmentsAmir-Hasan Kakaee1, Javad Gharloghi2, Aliasghar Foroughifar3, Abdoreza Khanlari4(1. School of Automotive... stresses is considerable.Key words:piston; temperature; boundary condition; stress; thermo-mechanical analysis......
