共搜索到24740条信息,每页显示10条信息,共2474页。用时:0小时0分0秒831毫秒
Analysis of inhibition of concrete steel-rebar corrosion by Na2Cr2O7 concentrations: Implications for conflicting reports on inhibitor effectivenessJ. O. Okeniyi1, I. O. Oladele 1, I. J. Ambrose1... and Gumbel probability distribution functions; Kolmogorov-Smirnov statistics; tests of significance......
and different titanium alloying methods on the fracture toughness of ZL108 alloy, and explore their mechanism by microstructure analysis. This is of practical significance for improving the fracture toughness... of three alloys Table 4 Significance test of t distribution 4 Microstructure analyses 4.1 Metallographic analysis of α(Al) phase The metallographic images of three alloys are shown in Fig.1.......
J. Cent. South Univ. (2017) 24: 2705-2716 DOI: https://doi.org/10.1007/s11771-017-3683-6 Variational analysis of mid-span deflection of gantry cranes ZHANG Da-peng(张大鹏)1, 2, CHENG Wen-ming(程文明)2... to dimensional analysis method. And experiments were performed on the WEW-600B type testing machine. Hackling experimental data, the regular of the load and deflection on the girder mid-span is obtained......
Synthesis and characterization of Nd3+-doped Ce0.6Zr0.4O2 and its doping significance on oxygen storage capacityChandramohan Somayaji2,S.Kanagaraj22. Indian institute of Technology摘 要:analysis(TGA).The TGA study......
of Sciences, Beijing 100029, China;)Abstract:The Xialu chert, which contains abundant biological information, were investigated by major element analysis, micro-Raman, SEM and EPMA. The results show......
, China) Abstract: The discovery of spatio-temporal cascading patterns was modeled as a significance test for prevalence of candidate patterns under the null model of independence, and a statistical...-temporal cascading patterns; spatio-temporal point process; significance test 为了发现不同地理要素时空分布间的关联关系,人们对时空关联模式挖掘进行了研究[1-2].时空级联模式是时空关联模式的一种重要表现形式,旨在描述不同地理要素频繁发生于邻近空间位置的时间先后顺序[3].挖掘时空级联模式对于进一步揭示和理解不同地理要素间关联关系的......
Endemic error correction model and quantitative analysis of precise point positioningJI Chang-dong, FENG Lei, XU Ai-gong(School of Geomatics, Liaoning Technical University, Fuxin 123000, China... have guiding significance to improve the accuracy of precise point positioning zero-difference model.Key words:precise point positioning (PPP); zero-difference model; endemic error; GPS qualitative......
Significance of zircon trace element geochemistry,the Shihu gold deposit,western Hebei Province,North China曹烨1,2,3,李胜荣1,2,张华锋1,2,刘小滨2,李真真2,敖翀2,要梅娟1,2,31. State key Laboratory of Geological Processes... analysis,are sensitive to source rock type and crystallization environment.Concentrations of 21 trace elements were determined for zircons from granitoid rocks,diorites,quartz diorite porphyrites and gold......
Significance of zircon trace element geochemistry,the Shihu gold deposit,western Hebei Province,North China曹烨1,2,3,李胜荣1,2,张华锋1,2,刘小滨2,李真真2,敖翀2,要梅娟1,2,31. State key Laboratory of Geological Processes... analysis,are sensitive to source rock type and crystallization environment.Concentrations of 21 trace elements were determined for zircons from granitoid rocks,diorites,quartz diorite porphyrites and gold......
. Analysis of the genesis of the Dahongliutan iron deposit in the Tianshuilun sweetwater block and its prospecting significance [J]. Geotectonics and Metallogenesis, 2016, 40(5): 949-959. (in Chinese) [12... J. Cent. South Univ. (2019) 26: 3420-3435 DOI: https://doi.org/10.1007/s11771-019-4264-7 Geochronology, petrogenesis and tectonic significance of Dahongliutan pluton in Western Kunlun orogenic belt......