Xu Hui

Effects of monopodial branching flexible vegetation on the wave attenuation by vegetation

Hui Xu, Xu Hui, Kai Yin, Sudong Xu et autres

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Design and Simulation of a New Near Zero-Wear Non-Contact Self-Impact Seal Based on the Tesla Valve Structure

Yan Wang, Yiming He, Xufei Xie, Zhouxin Huang et autres

This study proposes a new near zero-wear non-contact self-impact seal based on the passive fluid blocking principle and the Tesla valve structure, which is characterised by near zero-wear, a long lifetime, a simple structure and high stability. Research shows that the impact-blocking …

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I Did Well in the International English Language Testing System but Still Cannot Make Small Talk in English

Xu Hui

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Design and Performance Analysis of a New Non-contact Self-impact Seal

Yan Wang, XIE Xuefei, Xu Hui, HAUNG Zhouxin et autres

摘要： 引入阻塞流体实施封严是非接触式密封的基本形式,节流效率低是制约此类技术性能提升、系统简化的关键。特斯拉阀凭借独特的造型结构,反向流动时形成的巧妙逐节冲击阻塞特性具有高效的节流效率。借鉴这一结构提出一种新型非接触式自冲击密封结构,兼具零磨损、高稳定性、结构简单和节流高效等特点,极具吸引力。应用CFD技术,仿真模拟不同结构和工况参数下新型密封的性能表现,结果表明:相比于水平型和阶梯型自冲击密封结构,层叠式结构具有更高的级数布置效率,并以AbBa式组合、交错比k=2时的抑漏效果最佳;新型密封对氢气、甲烷等低密度气体的泄漏偏高,对其他高密度气体的泄漏基本不变;新型密封泄漏量受压力影响较大、受转速影响较小,通过减小密封间距及增大密封级数可有效抑漏。相同工况下,以泄漏量为指标,新型密封较迷宫、螺旋、间隙密封可分别减漏27.79%、53.33%、64.34%;以密封间距为指标,新型密封实现标准泄漏时的密封间距是干气密封十几倍甚至几十倍,且新型密封间距为刚性间隙,稳定性更高。提出的新型密封结构,将衍生出一种密封新理论和原创技术,可以实现对现有非接触密封体系的理论拓展和技术革新。

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Evaluation of Salt Tolerance of Liriope platyphylla and Pachysandra terminalis to Deicing Salt (CaCl2) Concentration in Winter

Jin-Hee Ju, Xu Hui, Jiyeon Park, Eun-Young Choi et autres

Effects of Fertilizer Levels on Nitrogen Utilization Characteristics and Yield in Rice Cultivars with Different Nitrogen Use Efficiencies

Yongjian Sun, Sun Yuanyuan, Mingjin Jiang, LI Ying-hong et autres

可視光照射下において安定性及び高い光触媒活性をもつCeO 2 /Ag 3 PO 4 光触媒

Yanhua Song, Zhao Haozhu, Chen Zhigang, Wang Weiren et autres

Effects of wheat straw mulching and nitrogen management on grain yield, rice quality and nitrogen utilization in hybrid rice under different soil fertility conditions.

Yan FengJun, Yongjian Sun, Jun Ma, Xu Hui et autres

Study on measurement of residence time distribution and flow model for anaerobic reactor

Xu Hui

The pulse inputting method is applied to test of the anaerobic reactors in cold condition,which determines the changes of conductivity with time.A three parameters model including a PFR series and two parallel CSTR is set up.Based on experimental data,we calculate the model …

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A 1.25Gb/s high gain, wide dynamic range pre-amplifier in 0.35H5;m CMOS

Xu Hui, Jun Feng

This paper presents a 1.25Gb/s high gain optical receiver pre-amplifier featuring a wide dynamic range in 0.35µm standard CMOS. The designed amplifier is configured on three identical stages, incorporating the automatic gain control (AGC) technique to achieve a wide input dynamic range …

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Extraction process of polyphenols from mulberry dregs by ultrasonic assisted extraction

Xu Hui

The optimization extraction process of polyphenols in mulberry dregs with ethanol-water was studied by ultrasonic assisted extraction.Some factors influenced polyphenols extraction such as the ethanol concentration,the material-liquid ratio,the amplitude,the ultrasonic time.The results showed that the optimum conditions as follows:the material-liquid ratio was …

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The university strengthens the network ideology political works the ponder

Xu Hui

Swift development's information network technology has brought the stern challenge and the rare development opportunity for the university ideology political works.The university must do the university student ideology political works fully using the network,grasps on-line ideology political works diligently the initiative,enhances the …

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