Wenfeng Hou

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  • Wenfeng Hou
  • 2014
The ultra-precision positioning stages are generally used in high precision positioning engineering fields, such as in biomedical genetic engineering, precision optical engineering, MEMS manufacturing and other fields. In this paper, an ultra-precision positioning stage is introduced. The flexure hinge is treated as a three nodes element with varying(More)
Controlled release fertilizer can reduce nitrogen losses to the environment while increasing grain yield and improving apparent nitrogen recovery (ANR) of rice. However, few studies have evaluated the comparative efficacy of different polymer-coated urea products on nitrogen (N) losses, ANR, and N uptake of rice. A 2-year field experiment was conducted to(More)
Inferior tillers typically provide a minimal contribution to the grain yields of rice; however, with the proper regulation of light and nutrients, their yields may be significantly enhanced. The exogenous introduction of gibberellic acid (GA3) may assist with extending the culm lengths of inferior tillers, the sequestration of additional sunlight, and the(More)
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