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[期刊论文] 作者:WANG Yuesi,WANG Changke,Guo Xu,
来源:科学通报 年份:2004
The concentration of atmospheric CO2 in Beijing increased rapidly at a mean growth rate of 3.7%@a?1 from 1993 to 1995. After displaying a peak of (409.7±25.9)...
Microstructure and wear resistance of electro-thermal explosion sprayed stellite coating used for re
[期刊论文] 作者:JIN Guo,XU Bin-shi,WANG Hai-do,
来源:中南工业大学学报(英文版) 年份:2004
Electro-thermal explosion directional spraying was used to prepare the stellite coating on substrate of the AISI 1045 steel. The morphologies of cross-section a...
Novel Brφnsted Acidic Ionic Liquid Based on a Cyclic Guanidinium Cation: a Green, Efficient, and Rec
[期刊论文] 作者:GUO Xu,DUAN Hai-feng,SUN Hai,C,
来源:高等学校化学研究(英文版) 年份:2004
A novel Brφnsted acidic ionic liquid(IL) based on the cyclic guanidinium cation has been synthesized. This IL,as a strong Brφnsted acid catalyst or solvent, s...
[期刊论文] 作者:胡子超, 吴广芬, Guo Xu, Jia Rui, Liu,
来源:科技通报 年份:2004
分析PM2.5的污染特征,研究它在各阶段的浓度变化规律及其与气象因子的相关性;探讨PM2.5可行的控制途径。通过记录烟台市一年间11个监测点位的大气颗粒物数据和逐日的气象数据...
,Extended Power Law Nonlinear Response and Amplitude-Dependent ac Susceptibility of High-Tc Supercon
[期刊论文] 作者:NING Zhen-Hua,CHEN Kai-Xuan,YIN Lan,LU Guo,XU Xiao-Lin,GUO Jian-Dong,WANG Fu-Ren,YIN Dao-Le,
来源:中国物理快报(英文版) 年份:2004
We show a nonlinear materials equation of superconductors in the form of an extended power law which can be derived from the Ginzburg-Landau (GL) functional. Th...
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