Carex yangchunensis, a new species of Cyperaceae from the limestone regions of Guangdong, South China by Yi-Fei Lu, De-Chang Meng, Xiao-Feng Jin

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High-power radiofrequency quadrupoles: Review of recent developments, common problems, and solutions by Yuan He, Wei-ping Dou, Chen-xing Li, Zhi-jun Wang, Tian-cai Jiang, Zhou-li Zhang, Lie-peng Sun, Zheng Gao, Xiao-feng Jin, Gui-rong Huang, Ran Huang, Feng-feng Wang, Ling-yun Gong, Bin Zhang, Sheng-hu Zhang, Hong-Wei Zhao

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