Reply to the comment of Cheng et al.

We thank Cheng et al. for their interest in our paper “On linking climate to Chinese dynastic change: Spatial and temporal variations of of monsoonal rain” [1]. Our paper was written largely as a response to the suggestion made by Zhang P Z, et al. [2] that climate has a key role in affecting chapters of Chinese cultural history (e.g. the demise of the Tang, Yuan and Ming dynasties).
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机构振动力优化平衡的一种新方法——谐波分量双幅值法及均方根值综合优化平衡法

分析了激振力引起系统的激振和响应之间的关系,指出了振动力谐波分量均方根(RMS)值法和传统均方根值法进行机构优化平衡时的主要区别,提出了用振动力谐波分量的双幅值B_(max)和RMS值加权和为目标函数的优化方法.用此法进行机构的优化平衡比用传统的RMS值法更能有效地减小系统的振动响应.     

On linking climate to Chinese dynastic change: Spatial and temporal variations of monsoonal rain

The causal correlation or linkage between the East Asian Monsoon (EAM) intensity and rise/fall of Chinese dynasties recently proposed by high-resolution paleoclimate reconstructions is examined in detail. Aside from many exceptions to the correlation, both instrumental and historical climate records show strong spatial variations of rainfall on annual-to-decadal scales over eastern China. The relationship between rainfall and EAM intensity also exhibits regional disparity. These observations suggest: (1) Ta...     

Nitrogen-doped graphene nanosheets as high efficient catalysts for oxygen reduction reaction

It is of great significance in exploring alternative catalysts to platinum (Pt)-based materials for oxygen reduction reaction (ORR),because this reaction is invariably involved in various fuel cells and metal-air batteries.We herein reported the nitrogen doped graphene nanosheets (NGNSs) with pore volume of as high as 3.42 m 3 /g and investigated their potential application as ORR catalysts,it was demonstrated the NGNSs featured high activity,improved kinetics and excellent long-term stability for ORR.The NGNSs were successfully used as cathode catalysts of microbial fuel cells (MFCs) and performed even better than the commercial Pt/C (Pt 10%) catalysts at the maximum power output.